Startup events in September 2026 – Calendar

Browse upcoming startup events across Europe. Filter by country or month, and plan your next ecosystem trip.

September 2026
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Events this month

September 2026

Alpbach, Austria 24 Aug 2026 – 4 Sept 2026 Conference In-person €€

The 81st edition of Austria's flagship interdisciplinary forum, themed around Europe's future, gathering thousands of participants from dozens of countries. It convenes decision-makers from politics, business, science and culture alongside scholarship-funded young people across Academy Days, Euregio Days and Conference Days. It is a high-level venue for founders seeking European policy, investment and innovation networking.

Helsinki, Finland 28 Aug 2026 – 6 Sept 2026 Festival In-person Free

The Nordics' largest design festival, running for 10+ days across Helsinki with 200,000+ visitors, 250+ events, and a dedicated design-business program for creative startups, service designers, and UX studios. Features exhibitions, pop-ups, talks, and the Design Forum pitching event. Most events free. Useful for creative-tech, UX tooling, and design-software founders looking to connect with Nordic design buyers.

Bled, Slovenia 31 Aug 2026 – 1 Sept 2026 Summit In-person €€€

21st edition of Slovenia's flagship international policy forum, themed Choosing the Future. Convenes heads of state, ministers, business leaders and innovators around geopolitics, the digital transition, AI governance and sustainability.

Reykjavik, Iceland 2 Sept 2026 – 4 Sept 2026 Conference In-person €€

The Nordic Energy Informatics Academy Conference, held at the University of Iceland in Reykjavik, explores the intersection of energy systems and informatics. Sessions span smart grids, district heating, electric mobility, industrial efficiency and sustainable buildings, with a dedicated Nordic track on the region's energy transition, bringing together academic researchers and industry innovators.

Nova Gorica, Slovenia 2 Sept 2026 – 4 Sept 2026 Conference In-person

Slovenia's biggest cybersecurity conference, running for over 20 years, covering practical security, privacy, and AI-security topics for a professional audience. Relevant to security-focused founders and notable as a flagship event outside the capital.

Oslo, Norway 2 Sept 2026 – 3 Sept 2026 Conference In-person €€€

JavaZone 2026 is Norway's biggest community-driven Java conference, organised entirely by volunteers from javaBin (the Norwegian Java User Group) at Nova Spektrum in Lillestrom near Oslo on 2-3 September 2026. Around 3,600 attendees and roughly 200 speakers cover the JVM ecosystem, developer tooling and software craftsmanship. By design no speaker is paid and no talk can be bought onto the program, which is selected by an independent committee.

Belgrade, Serbia 3 Sept 2026 – 4 Sept 2026 Summit In-person

The fifth edition of TBM Group's AI Tech Summit at the Sava Center in Belgrade, one of Serbia's largest AI and enterprise-tech conferences. Founder-relevant for AI startups seeking enterprise customers and regional visibility.

Istanbul, Turkey 3 Sept 2026 – 5 Sept 2026 Summit In-person €€

The second edition of the Istanbul Global E-Export Summit (IGEXX) is a cross-border digital commerce and e-export event at the Haliç Congress Center under the theme 'Beyond Borders'. It brings together e-commerce brands, online marketplaces, retailers, logistics and fulfilment providers and trade policymakers for keynotes, panels, B2B matchmaking and the IGEXX Awards.

Stockholm, Sweden 3 Sept 2026 – 4 Sept 2026 Conference In-person €€€

Stockholm's iconic JavaScript community conference, running since 2014 and known for its curated single-track program covering frontend frameworks, Node.js backends, tooling, and the emerging wave of AI-augmented developer workflows. 700+ senior JavaScript engineers from across the Nordics and beyond. The post-conference social events in Stockholm's bars and restaurants are a defining feature. Tickets EUR 500-700.

Yerevan, Armenia 4 Sept 2026 – 6 Sept 2026 Conference In-person Free

The 24th edition of Armenia's specialized international exhibition for IT, security and communications, organized by LOGOS EXPO Center at the Karen Demirchyan Complex in Yerevan. Thematic sections cover IT systems, cybersecurity, cloud computing, innovative technologies, medical electronics and mobile applications, with a B2B trade floor connecting vendors, integrators and corporate buyers.

Berlin, Germany 4 Sept 2026 – 8 Sept 2026 Conference In-person €€€

Flagship global consumer electronics trade show at Messe Berlin and a major launch platform for hardware and smart-home products. Startup-focused programs such as IFA NEXT help early-stage teams access media, distribution, and manufacturing partners.

Budapest, Hungary 4 Sept 2026 Summit In-person

One-day community conference on Microsoft tech (Power Platform, Azure, Fabric, Dynamics 365, Microsoft 365, Copilot) plus AI and career skills. Multi-track sessions in English at Mixát, Budapest.

Copenhagen, Denmark 5 Sept 2026 – 7 Sept 2026 Festival In-person

A unique festival exploring how technology shapes humanity, blending tech demos with art installations, workshops, and debates. Features 100+ sessions across Copenhagen venues with topics like ethical AI, climate tech, and digital democracy. Free and ticketed events attract 5,000+ attendees.

Thessaloniki, Greece 5 Sept 2026 – 13 Sept 2026 In-person

90th edition of Greece's largest general trade and innovation fair at the Thessaloniki International Exhibition Center, with Japan as Honored Country; combines tech pavilions, startup showcases, and government innovation programming over nine days.

Budapest, Hungary 7 Sept 2026 – 8 Sept 2026 Summit In-person €€

Central Europe's largest AI conference, hosted at Magyar Zene Háza and Néprajzi Múzeum in Városliget. 12 sections and 100+ speakers cover AI across business, healthcare, employment, creative, and ethics.

Glasgow, United Kingdom 7 Sept 2026 – 11 Sept 2026 Demo Day In-person

A city-wide festival in its third year, with 40+ events and 3,000+ attendees across keynotes, workshops, and community-led sessions. For a Scottish founder it is a low-cost way to plug into the Glasgow innovation ecosystem, meet investors, and showcase a startup across multiple verticals.

Stockholm, Sweden 7 Sept 2026 – 11 Sept 2026 Festival In-person Free

Stockholm's city-wide, open-access technology week with hundreds of independently hosted panels, hackathons, and investor summits connected under one platform and anchored by the open Tech Open gathering in Kungstradgarden. The festival convenes startups, scaleups, investors, and ecosystem actors from across the Nordics for five days of programming.

Warsaw, Poland 8 Sept 2026 Conference In-person Free

AWS Community Day Poland 2026 is a community-run conference for AWS cloud builders, developers, and architects, held at Multikino in Złote Tarasy, Warsaw. It features talks across multiple screening-room stages on AWS cloud, serverless, and DevOps topics, plus hands-on sessions and networking, and is organised by AWS User Group community members rather than AWS itself, free to attend with registration.

Cologne, Germany 8 Sept 2026 Conference In-person Free

Deutsche Telekom's flagship digitalization event transforming downtown Cologne into a tech campus, featuring 300+ partners and 50,000+ attendees. Strong for B2B SaaS, IoT, cybersecurity, and cloud startups targeting SME digital transformation.

Budapest, Hungary 8 Sept 2026 – 9 Sept 2026 Investor Dinner In-person €€

For over two decades the most important annual gathering of Hungary's e-commerce sector, held just before the Q4 sales peak. The two-day programme at Europa Event Center features keynotes, panels, an expo, networking, and an evening awards dinner, with the 2026 guest country of honour being China and a strong international and cross-border focus.

Reykjavik, Iceland 8 Sept 2026 – 10 Sept 2026 Conference In-person €€

The 17th EAI International Conference on Digital Forensics & Cyber Crime, hosted by the University of Iceland at the Groska Innovation Hub in Reykjavik. The 2026 theme is cyber analytics and forensics in the era of emerging AI threats, with keynotes, research presentations and tutorials drawing academics, law-enforcement practitioners and security vendors. Proceedings are published in Springer's LNICST series.

Stockholm, Sweden 8 Sept 2026 – 9 Sept 2026 In-person €€€

The premier Nordic life-science partnering event organised by SwedenBIO, rotating to Stockholm in 2026. Brings biotech, pharma, medtech, and digital-health players together for partnering meetings, panels, and company presentations.

Linz, Austria 9 Sept 2026 – 13 Sept 2026 Festival In-person €€

Five-day festival on art, technology and society in downtown Linz under the theme 'Future Begins — Negotiating Humanity'. Combines exhibitions, conferences, performances, workshops and tours across three venue clusters: OK Quarter, Med Campus and Danube Triangle.

Utrecht, Netherlands 9 Sept 2026 – 10 Sept 2026 Conference In-person

The Netherlands' premier cybersecurity event at Jaarbeurs Utrecht, gathering security professionals, IT leaders, and solution vendors. A central exhibition-and-conference venue for cybersecurity startups selling into Dutch enterprise and government.

Jyvaskyla, Finland 9 Sept 2026 – 10 Sept 2026 In-person

The annual flagship event of Finland's quantum ecosystem, organised by InstituteQ, with keynotes, policy discussion, and a quantum pitching competition. Relevant for quantum and deep-tech founders and researchers.

Istanbul, Turkey 9 Sept 2026 – 10 Sept 2026 Conference In-person €€

Inaugural Türkiye edition of the global GITEX brand at Istanbul Expo Center, convening AI, cybersecurity, fintech, cloud, e-commerce, and data-center leaders, backed by Türkiye's Ministry of Industry & Technology and Dubai World Trade Centre.

Lucerne, Switzerland 9 Sept 2026 – 11 Sept 2026 Conference In-person

Switzerland's leading biennial medtech trade fair for development, manufacturing and supply, organized by Messe Luzern. Around two hundred exhibitors plus a conference and innovation program draw engineers, manufacturers, suppliers and medtech startups. It is relevant to medtech founders for sourcing, partnerships and showcasing solutions in one of Switzerland's strongest industrial clusters.

Tbilisi, Georgia 9 Sept 2026 Conference In-person

Testers Day 2026 is Georgia's annual software-testing conference organised by GeoSTQB, the Georgian Software Testing Qualifications Board and official ISTQB member board, marking International Testers' Day in Tbilisi. The program gathers QA engineers and test leaders around real-world technical challenges, AI in quality assurance, test automation, career development and team leadership.

Zurich, Switzerland 9 Sept 2026 Summit In-person

Venturelab's Top100 day combines a curated investor summit — handpicked startups raising their next round pitching to Swiss VCs — with the evening Top100 Swiss Startup Award ceremony. For a fundraising founder it is one of the highest-signal investor-matching days in Switzerland.

Warsaw, Poland 9 Sept 2026 – 10 Sept 2026 Hackathon In-person €€

Web3 Warsaw 2026 is positioned as Eastern Europe's largest blockchain and Web3 conference, anchoring Warsaw Blockchain Week. The two-day event expects thousands of attendees and hundreds of speakers across themed stages spanning tech, NFT, gaming, and AI, and includes a hackathon, an awards night for startups and founders, and dozens of curated side events.

Düsseldorf, Germany 10 Sept 2026 Demo Day In-person €€

Future Tech Fest, the rebranded Digital Demo Day, bills itself as Germany's largest B2B startup expo and conference and is the highlight of Düsseldorf Startup Week. It brings hundreds of national and international tech startups together with corporates, SMEs, investors and universities for an expo, pitch battles, curated matchmaking, venture-clienting and workshops, drawing several thousand attendees.

Odense, Denmark 10 Sept 2026 Festival In-person

An annual Odense startup festival and regional ecosystem gathering for founders, investors, and innovators on Funen.

Tallinn, Estonia 10 Sept 2026 Summit In-person

A one-day summit focused on AI acceleration, digital dependency, and geopolitical risk, convening security leaders and tech vendors. A focused stage for security and defence founders selling into the Nordic-Baltic public and enterprise sector.

Reykjavik, Iceland 10 Sept 2026 Summit In-person

A full-day game-industry summit at Fantasía in Reykjavík, now in its second year, organised by Game Makers Iceland. Talks from Icelandic and international speakers for game designers, developers, and creative leaders — the anchor event for Iceland's notable gamedev cluster.

Vienna, Austria 10 Sept 2026 – 11 Sept 2026 Conference In-person €€

A two-day flagship innovation conference themed around technological leadership for a resilient Europe, organized by AIT. It convenes international experts and decision-makers from politics, industry and academia for keynotes, plenary debates, in-depth workshops and networking on technological sovereignty, resilient infrastructure and turning research into industrial strength. A strong fit for deep-tech founders and R&D-driven startups.

Tbilisi, Georgia 11 Sept 2026 – 13 Sept 2026 Pitch Night In-person €€€

Invitation-only Clinical Accelerator summit on cardiovascular and interventional medical devices, gathering physicians, medtech founders, and investors. Includes a Shark Tank pitch competition with a $25,000 prize for early-stage MedTech startups.

Zurich, Switzerland 11 Sept 2026 Conference In-person €€

Switzerland's premier JavaScript and TypeScript developer conference, run by the non-profit Swiss JavaScript Group. It expects several hundred developers, engineers and tech leaders for talks on JavaScript, TypeScript, React and Node.js plus workshops and networking. It is relevant to technical founders and dev-tooling startups hiring or selling into the Swiss developer community.

Sofia, Bulgaria 12 Sept 2026 Summit In-person

A one-day, three-track in-person summit at Sofia Tech Park focused on applied AI for industry — automation, IoT, and manufacturing. Useful for founders building vertical AI and automation products targeting Bulgarian and Southeast European industrial buyers.

Zadar, Croatia 13 Sept 2026 – 15 Sept 2026 Conference In-person

Croatia's largest developer and tech conference organized by unicorn Infobip, held in the coastal city of Zadar. Attracts 2,500+ developers, CTOs, and tech founders for talks on cloud, AI, and communications technology. Tickets around EUR 200-400 with a strong community atmosphere.

Zadar, Croatia 13 Sept 2026 – 15 Sept 2026 Pitch Night In-person

Infobip's developer and product conference on the Adriatic coast, combining technical talks on messaging APIs, CPaaS, and cloud communications with a startup pitch competition and seaside networking. 2,000+ attendees from across Europe. Tickets from EUR 100. The Split setting and summer timing make it one of Europe's most appealing dev conferences for combining work and warm weather.

Cambridge, United Kingdom 14 Sept 2026 – 18 Sept 2026 Conference In-person

Built around the Cambridge deep-tech cluster, with a 2026 theme of how deep tech changes the world. It features an Innovation Alley exhibition for deeptech startups and scaleups, plus sessions on scaling, regulation, and access to capital — high value for science-led founders seeking investors and corporate partners.

Luxembourg, Luxembourg 14 Sept 2026 – 18 Sept 2026 Workshop In-person Free

One-week fast-track bootcamp at the LHoFT for 10 selected green fintech firms, co-facilitated with LSFI. Participants pitch to investors, meet sustainable finance decision-makers and join the annual LSFI Summit.

Warsaw, Poland 14 Sept 2026 – 15 Sept 2026 Festival Hybrid

One of Central Europe's largest polyglot developer festivals, Code Europe 2026 runs as an online live-stream day (14 September) plus an on-site day in Warsaw at Stadion Legii (15 September), with talks across frontend, backend, DevOps, data, and AI. Its festival format and broad developer audience give startups strong employer-branding visibility across the CEE region.

Oslo, Norway 14 Sept 2026 – 18 Sept 2026 Conference In-person €€€

NDC Oslo is one of Europe's largest independent software developer conferences, organised by NDC Conferences at Oslo Spektrum from 14–18 September 2026. The 2026 edition features around 154 speakers across 165 sessions plus 16 hands-on workshops, covering .NET, cloud, AI, security, and software craftsmanship.

Paris, France 15 Sept 2026 – 16 Sept 2026 Conference In-person €€

Organised by RX France, Big Data & AI Paris is one of Europe's largest data and AI gatherings, held 15–16 September 2026 at Paris Expo Porte de Versailles. The two-day event combines 220+ exhibitors with the 'Innovative Minds' conference programme spanning tech, governance, and business tracks, drawing around 15,000 professionals.

Malaga, Spain 15 Sept 2026 – 16 Sept 2026 Conference In-person

FYCMA's smart-city and sustainable-mobility forum, co-organised with Málaga City Council and AMETIC, running an open call for startups. A good fit for greentech, urban-mobility, and IoT founders targeting municipal and public-sector buyers in southern Spain.

Tullamore, Ireland 15 Sept 2026 – 17 Sept 2026 Demo Day In-person

Enterprise Ireland's flagship agritech showcase at the National Ploughing Championships in Screggan, Tullamore. Features Start-Up Innovator of the Year (€10,000 prize) and Green Impact awards in front of 240,000+ visitors.

Paris, France 15 Sept 2026 – 17 Sept 2026 Festival In-person €€

Paris Retail Week, held as NRF Retail's Big Show Europe at Paris Expo Porte de Versailles, is a major gathering for the future of retail in Europe. Organised by the National Retail Federation with Comexposium, it brings retailers, brands and technology partners together around retail innovation and commerce tech.

Antwerp, Belgium 15 Sept 2026 – 17 Sept 2026 Demo Day In-person €€

A three-day showcase of autonomous and sustainable port technology at Quay 102 in Antwerp, with live demos, expert sessions and international cross-port collaboration. It opens with DroneHorizon, a B2B and B2G matchmaking summit on unmanned and autonomous systems for ports and critical infrastructure, positioning Antwerp as a European testbed for future port operations.

Trondheim, Norway 15 Sept 2026 – 17 Sept 2026 Festival In-person €€

Three-day tech and innovation festival organized by NTNU, SINTEF, and the City of Trondheim, showcasing the research-driven technology cluster of central Norway (robotics, ocean tech, autonomous systems, energy). Features deep-tech exhibitions, investor matchmaking, and startup demos from the Trondheim Tech Port cluster. Tickets NOK 500-2,000.

Vienna, Austria 16 Sept 2026 – 18 Sept 2026 Festival In-person

Vienna's multi-stage innovation festival organized by ProSiebenSat.1 PULS 4, bringing 10,000+ attendees across media, tech, sustainability, and politics tracks. Features a startup expo, pitch competition, and keynotes from European tech leaders. Free to EUR 99.

Lviv, Ukraine 16 Sept 2026 – 17 Sept 2026 Summit In-person €€€

Ukraine's flagship defense-tech summit, organised by the Brave1 cluster with the Ministry of Defence & Ministry of Digital Transformation. 5,000+ participants; 2025 edition closed $100M in deals. 2026 focus is global scaling and joint US/EU production.

Helsinki, Finland 16 Sept 2026 – 17 Sept 2026 Conference In-person €€€

Europe's leading business and leadership conference with 7,500+ attendees and world-class speakers (past speakers include Barack Obama, Brene Brown, and Reid Hoffman). Focuses on leadership, strategy, and scaling. Premium pricing from EUR 2,000+ but unmatched networking with Nordic business elite.

Lillestrøm, Norway 16 Sept 2026 – 17 Sept 2026 Conference In-person €€€

Annual leadership and business conference bringing around 3,000 leaders, a majority of them C-level, to Hagemessen in Lillestrom under the 2026 theme 'The Human Edge'. The programme features roughly 23 globally recognized speakers including Steven Bartlett, Angela Duckworth, and Seth Godin on leadership, performance, and innovation.

Lyon, France 16 Sept 2026 – 17 Sept 2026 Conference In-person €€

SIDO Lyon is Europe's leading B2B show for IoT, AI, robotics, and XR, organised by Infopro Digital Trade Shows at the Cité Internationale de Lyon on 16–17 September 2026. The 2026 edition gathers 300+ exhibitors and around 210 speakers across some 70 conference sessions, with dedicated zones for sustainable tech (Impact by SIDO) and collaborative robotics (Innorobo by SIDO).

Kristiansand, Norway 16 Sept 2026 – 17 Sept 2026 Conference In-person €€€

Norway's leading arena for AI transformation, gathering over 1,300 business leaders, entrepreneurs, investors, and tech enthusiasts at Kilden Performing Arts Centre and Kunstsilo in Kristiansand. The 2026 edition features 80+ Nordic and international speakers exploring how AI and exponential technologies reshape business, innovation, and entrepreneurship.

St. Julian's, Malta 16 Sept 2026 Conference In-person €€

Malta's full-day developer and technology conference at the Hilton Malta in Portomaso, St. Julian's, featuring 7 tracks and 25+ talks. The 2026 edition runs under the theme 'With great power comes great responsibility', spotlighting quantum computing, artificial intelligence and modern software development for developers and digital professionals.

Budapest, Hungary 17 Sept 2026 In-person

Central and Eastern Europe's AWS community gathering at Kristály Színtér in Budapest. One-day event with keynotes from AWS specialists, hands-on workshops, and cloud networking.

Budapest, Hungary 17 Sept 2026 – 18 Sept 2026 Festival In-person

A future-focused festival in Budapest exploring how technology, science, and society intersect. Draws 5,000+ attendees including founders, researchers, and policymakers. Known for provocative talks on AI, biotech, and the future of work. Tickets start from EUR 100.

Wickrange, Luxembourg 17 Sept 2026 – 18 Sept 2026 Demo Day In-person Free

A deep-tech summit powered by Technoport that brings together Europe’s lab-to-market actors, including research institutions, technology-transfer offices, funding partners and entrepreneurs, to co-create structured deep-tech pathways. The invitation-only event features pre-arranged one-to-one matchmaking, an exhibition showcase and a demo zone of breakthrough technologies.

Paris, France 17 Sept 2026 Conference In-person

A single-track, builder-focused AI conference at the Folies Bergère for around 1,500 AI engineers and researchers, with speakers from OpenAI, Anthropic, Google, NVIDIA, and Databricks. Best for technical founders and AI developers who want deep content over expo-floor noise.

Brno, Czech Republic 17 Sept 2026 – 18 Sept 2026 Meetup In-person €€

European Ruby Conference hosted at Hotel Passage in Brno: two days of Ruby talks, community sessions, and international developer networking, preceded by an early-registration meetup on September 16.

Vilnius, Lithuania 17 Sept 2026 Conference In-person

Lithuania's leading international startup event at LITEXPO, with keynotes, panels, and the country's largest Pitch Battle (40+ startups, 200+ investors). The 2025 edition drew 2,000+ attendees from 65 countries — the flagship founder-investor event of the Lithuanian ecosystem.

Lisbon, Portugal 17 Sept 2026 – 18 Sept 2026 Summit In-person

A two-day founder–investor conference at the Beato Innovation District with 150+ speakers and around 2,000 attendees from 40+ countries. Built around fundraising, AI, product, growth, and scaling, with speed networking, 1:1s, and investor office hours — high value for founders raising or hunting deal flow.

Amsterdam, Netherlands 17 Sept 2026 – 18 Sept 2026 Conference In-person €€

A two-day technology expo bringing together developers, brands, marketers, technology providers, designers and innovators across internet, mobile, AdTech, MarTech and SaaS. It is co-located with DigiMarCon Europe, letting attendees move between the expo floor and the digital marketing conference sessions.

Limassol, Cyprus 17 Sept 2026 – 18 Sept 2026 Demo Day In-person €€

A B2B games-industry conference held at Parklane, a Luxury Collection Resort & Spa, serving one of Europe's largest game-dev hubs in Cyprus. It features off-record curated roundtables, a free Developer Showcase where teams pitch to publishers and investors, an expo, workshops and a beach networking party.

Belgrade, Serbia 18 Sept 2026 – 19 Sept 2026 Conference In-person

The official WordPress community conference for Belgrade, held over two days at Dom omladine Beograda. The 2026 edition expects more than 300 attendees across talks and hands-on workshops running in parallel halls, bringing together WordPress developers, designers, agencies and content creators.

Prague, Czech Republic 21 Sept 2026 – 22 Sept 2026 Conference In-person €€

Agile Prague is one of the first agile-focused conferences in the heart of Europe, gathering more than 25 international speakers across two days at the OK System Conference Center on Pankrác. It blends technical and practical talks with a mid-day Open Space and a Coaches Clinic running through the breaks, fostering direct conversation on agile, Scrum, and team practices.

Copenhagen, Denmark 21 Sept 2026 – 25 Sept 2026 Conference In-person Free

Distributed fintech festival across Copenhagen hosted by Copenhagen Fintech, with sessions at banks, fintech offices, and innovation hubs. Covers payments, open banking, green finance, and insurance innovation with a Nordic lens. 3,000+ participants across the week. Most sessions free.

Tallinn, Estonia 21 Sept 2026 Festival In-person Free

Tehnopol-run opener of Estonian Defence Week at Kultuurikatel Creative Hub. Brings dual-use startups, NATO defence companies, end-users, and investors together with pitches and a dozen-plus booths. Free with mandatory registration.

Iași, Romania 21 Sept 2026 – 23 Sept 2026 Conference In-person €€

DevDays (subtitled 'Unstacked Engineering Conference') is a Romanian software-engineering conference held at the Agora event center in Iași. Evolved from the long-running dotnetdays.ro conference, the 2026 edition runs pre-conference workshops on September 21-22 and a main conference day on September 23, with tracks spanning software development, architecture, AI, cloud infrastructure, DevOps and security.

Ghent, Belgium 21 Sept 2026 – 25 Sept 2026 Conference In-person

The annual conference of the EGI Federation, gathering digital and research-infrastructure providers, data scientists, and innovators to advance data-intensive science. Relevant for deeptech and research-spinout founders building on European compute infrastructure.

Leeds, United Kingdom 21 Sept 2026 – 2 Oct 2026 Festival In-person Free

Billed as the UK's largest open tech festival — a decentralised, mostly free two-week programme of hundreds of community-run events. For a Yorkshire founder or developer it is an accessible way to run or attend sessions, build a local network, and recruit without a big ticket cost.

Reykjavik, Iceland 21 Sept 2026 – 23 Sept 2026 Conference In-person €€€

Curated conference at Harpa for bootstrapped and indie-funded SaaS founders, with around 200 attendees from 30+ countries. Focus on practical growth, profitability and long-term ownership rather than fundraising.

Kongsberg, Norway 21 Sept 2026 – 24 Sept 2026 Conference In-person

NDC's software conference focused on embedded and systems programming at Magazinet Kongsberg — a specialist technical conference for engineers building real-world embedded products.

Copenhagen, Denmark 21 Sept 2026 – 25 Sept 2026 Conference In-person

A major Nordic fintech gathering at TAP1 with around 2,000 participants, 200 fintech startups, and 150 financial institutions across roughly 100 sessions. Strong startup-to-institution matchmaking.

Portoroz, Slovenia 21 Sept 2026 – 23 Sept 2026 Conference In-person

The largest IT conference in Slovenia, in its 31st edition on the Adriatic coast, bringing together technology professionals, business leaders, and educators. A broad ecosystem event useful for Slovenian founders' networking and hiring.

Stockholm, Sweden 21 Sept 2026 Demo Day In-person Free

Sting Demo Day is the flagship pitch event of Sting (Stockholm Innovation & Growth), one of Sweden's leading startup accelerators. Carefully selected high-potential founders from Sting's climate, health, AI, and deep-tech programs each deliver a 3-minute pitch of their vision and growth plans. The invite-only audience gathers 200+ handpicked investors and ecosystem allies, making it a prime fundraising and networking moment in the Stockholm ecosystem.

Barcelona, Spain 22 Sept 2026 – 23 Sept 2026 Summit In-person

Positioned as one of Europe's biggest AI events, with 10,000+ attendees, 200+ speakers, 50 side events across an AI Week, and a 500-builder hackathon. For AI founders and developers it concentrates investors, talent, and enterprise buyers in one week.

Berlin, Germany 22 Sept 2026 – 23 Sept 2026 Demo Day In-person €€€

AIDAQ is one of Europe's largest conferences on artificial intelligence, data and quantum technologies, convening thousands of attendees, hundreds of speakers and many sessions across multiple tracks. It brings together business, policy and science leaders. It is highly founder-relevant, featuring a DeepTech Pitch, a free startup showcase area for selected AI and quantum startups, and a deep-tech founder network.

Kilkenny, Ireland 22 Sept 2026 Conference In-person €€

Ireland's national cyber security conference (CINC), endorsed by the National Cyber Security Centre, at the Lyrath Estate Hotel in Kilkenny. The full-day event gathers senior leaders across industry, academia and government for keynotes, panels and interactive sessions on cyber challenges and innovation.

Copenhagen, Denmark 22 Sept 2026 – 24 Sept 2026 Conference In-person €€€

A three-day AI-focused conference at Lokomotivværkstedet, Copenhagen, blending curated talks with hands-on masterclasses. Targets product designers, engineers, and data professionals building real-world AI products, emphasising practical insights over hype.

Bergen, Norway 22 Sept 2026 – 25 Sept 2026 Festival In-person

Media City Bergen's annual innovation week, anchored by the mcb tech conference for C-level and tech leaders, with workshops and open sessions. Relevant for media-tech and AI founders in western Norway.

Barcelona, Spain 22 Sept 2026 – 23 Sept 2026 Conference In-person €€€

Info-Tech LIVE is the EMEA flagship conference of analyst firm Info-Tech Research Group, gathering CIOs, senior IT leaders and technology executives at the Grand Hyatt Barcelona. The 2026 edition runs under the theme "Agentic IT: From Hype to Value", with 20+ keynotes, analyst-led sessions, hands-on workshops and peer roundtables on turning AI investments into measurable business value.

Berlin, Germany 22 Sept 2026 – 25 Sept 2026 In-person €€

InnoTrans is the world's leading trade fair for transport technology, held biennially in Berlin. It showcases rail vehicles, infrastructure, public transport, tunnel construction and mobility software to tens of thousands of trade visitors and thousands of exhibitors from over 100 countries. It is a key venue for mobility and rail-tech founders seeking OEM and operator partnerships.

Florence, Italy 22 Sept 2026 In-person Free

Innovation Days is Il Sole 24 Ore's national roadshow, run with Confindustria, touring Italian regions to spotlight local entrepreneurship, digital transformation, SMEs, startups and territorial innovation. The Toscana stage on 22 September 2026 combines talks, an innovation award and networking for the regional business community.

Uppsala, Sweden 22 Sept 2026 Pitch Night In-person

Uppsala's premier innovation-ecosystem gathering, organised by UIC, with a startup hub exhibition, a Disruptor of the Year pitch competition, and 10+ side events bringing together startups, investors, academia, and industry.

Edinburgh, United Kingdom 22 Sept 2026 – 23 Sept 2026 Conference In-person

Self-described as the UK's flagship founder-investor summit, focused on pre-seed to Series A. It is squarely founder-relevant, with programming on fundraising, growth, and product, plus structured founder-investor matchmaking — one of the strongest non-London picks for an early-stage founder.

Edinburgh, United Kingdom 22 Sept 2026 – 23 Sept 2026 Conference In-person €€

Product and engineering leadership conference held in Vilnius for the first time in 2026, with content on scaling engineering orgs, product-led growth, hiring, and technical architecture. 500+ product leaders and engineering managers. Tickets EUR 300-600. Previously Edinburgh-only; the Vilnius edition targets the fast-growing Baltic and CEE tech-leadership community.

Prague, Czech Republic 23 Sept 2026 – 24 Sept 2026 Conference In-person €€€

Two-day AI conference at Cubex Centrum focused on real-world AI implementation, investment, and regulation, with five technical workshops on day one and three parallel tracks (Business, Technology, Public Sector) on day two.

Riga, Latvia 23 Sept 2026 – 24 Sept 2026 Conference In-person €€

BalticNOG 2026 is the annual Baltic Network Operators Group conference, moving to Riga for its next edition at the Radisson Blu Latvija Conference & Spa Hotel. It unites 400+ network engineers and internet-infrastructure professionals around routing security, IPv6 deployment, network automation, cybersecurity, cloud networking and regulatory developments, plus a new community-driven 'Skunk Works' format for tackling operational challenges.

London, United Kingdom 23 Sept 2026 – 24 Sept 2026 Conference In-person Free

The UK's largest free data, analytics and AI conference and exhibition at Olympia London, with 400+ seminars on data platforms, AI agents, AI governance and data products. Exhibitors range from Snowflake, Databricks and Google Cloud to data startups, making it strong for data and AI founders.

Cologne, Germany 23 Sept 2026 – 24 Sept 2026 Conference In-person €€

Europe's leading digital marketing and tech expo, drawing 40,000+ martech, adtech, and e-commerce professionals to Cologne every September. DMEXCO combines a conference track with a massive expo floor where agencies, SaaS vendors, and publishers exhibit. Key topics include programmatic advertising, retail media, AI-driven personalization, and privacy-first marketing. Tickets EUR 99-499.

London, United Kingdom 23 Sept 2026 – 24 Sept 2026 Conference In-person Free

A two-day commerce event at ExCeL London for B2C and B2B online-retail professionals, with 200+ solution providers and CPD-accredited content across ten theatres on AI-driven shopping, fulfilment and growth. Co-located with Technology for Marketing and Parcel & Post Expo.

Lisbon, Portugal 23 Sept 2026 – 24 Sept 2026 Conference In-person

A builder-focused AI conference at the Champalimaud Centre, capped at around 400 engineers and researchers actively shipping models in production. For technical AI founders and ML engineers who want substance over marketing, with direct access to top labs and founding teams.

Galway, Ireland 23 Sept 2026 – 24 Sept 2026 Conference In-person Free

Ninth edition of Europe's second-largest medical device design and manufacturing show at Galway Racecourse. Features a conference programme, Women in MedTech Forum and German Pavilion across 300+ MedTech companies in Ireland's MedTech capital.

London, United Kingdom 23 Sept 2026 – 24 Sept 2026 Conference In-person Free

A UK-leading marketing and AI event at ExCeL London for B2B and B2C marketers, with 200+ solution providers and 200+ hours of CPD-accredited content across ten conference theatres. Co-located with eCommerce Expo and Parcel & Post Expo, it is useful for martech and AI startups.

Cluj-Napoca, Romania 24 Sept 2026 In-person

The 9th Cluj edition at Cluj Innovation Park, expecting 2,500+ developers and 50+ speakers across three stages. A developer-heavy ecosystem and hiring venue in Transylvania's tech capital.

Lyon, France 24 Sept 2026 In-person Free

The major entrepreneurship event for the Auvergne-Rhône-Alpes region at La Sucrière in Lyon, expecting around 10,000 founders, freelancers and business leaders. With roughly 300 speakers and 120 conferences across a main stage and eight stages, it features pitch battles, expert panels and networking.

Budapest, Hungary 24 Sept 2026 Conference In-person €€

Hungary's leading independent cybersecurity conference and expo, spread across 5,300 m² at the Bálna National Defense Center. Covers AI risks, NIS2, OT, fraud, and cyber sovereignty.

Riga, Latvia 24 Sept 2026 Meetup In-person Free

Monthly community evening organized by Startup Latvia and the Riga TechHub at the MadCity coworking space. Each edition features 3 founder talks, a pitch session with local VCs (Change Ventures, Overkill Ventures), and drinks. Autumn 2026 edition focuses on seed fundraising in a difficult climate. Free with registration.

Rovinj, Croatia 24 Sept 2026 – 27 Sept 2026 Festival In-person €€

Largest regional communications festival now in its 19th edition, with five content tracks including Media, AI, HR, Investment and Finance Weekend gathering media, marketing and PR professionals.

Zurich, Switzerland 25 Sept 2026 – 26 Sept 2026 Conference In-person

Switzerland's leading conference for diversity, equity and inclusion in tech, organized by TechFace with female-led tech communities. Two days of keynotes, workshops and networking draw developers, engineers, designers, product leaders, students and allies. It is relevant to founders for talent, inclusive hiring and ecosystem networking.

Zagreb, Croatia 25 Sept 2026 Conference In-person Free

CollabDays Zagreb is a free, community-driven one-day technology conference held at Algebra University College in Zagreb. It focuses on Microsoft 365, Teams, SharePoint, the Power Platform and collaboration technologies, with expert talks and interactive sessions for developers, IT professionals and business users, run by volunteer speakers.

Braga, Portugal 25 Sept 2026 – 27 Sept 2026 Festival In-person Free

Greenfest is Portugal's largest sustainability festival, with the 2026 edition moving to Braga. Structured around eight pillars including circular economy and green entrepreneurship, it mixes talks, exhibitions and activities for sustainability professionals, green founders and the wider public.

Lviv, Ukraine 25 Sept 2026 – 27 Sept 2026 Conference In-person

Ukraine's largest tech conference held at Lviv's Arena convention center, attracting 3,000+ developers, founders, and investors from across CEE. Features startup pitching competitions, tech talks on AI, product management, and deep tech, plus strong support for Ukrainian tech diaspora networking.

Lviv, Ukraine 25 Sept 2026 – 27 Sept 2026 Conference In-person Free

A series of curated meetups, company visits, and investor dinners organized on the sidelines of the main Lviv IT Arena conference. Smaller and more intimate than the main event, these side events are where much of the actual deal-making and hiring-relationship building happens. Most are free with RSVP; some invite-only.

Klaipėda, Lithuania 25 Sept 2026 – 27 Sept 2026 Hackathon In-person Free

Portathon is an international port-technology hackathon, in its 8th edition in 2026, held in Klaipėda and gathering 100+ participants into multidisciplinary teams to build prototypes solving real maritime and port-sector challenges. Themes span IT and digitalization for the maritime industry, cybersecurity, AI integration and sustainability, with the event acting as a launchpad for ventures such as PortMI.

Porto, Portugal 26 Sept 2026 In-person €€

Builders Circle Porto is a small, application-only, operator-led one-day session organised by Product Circle for product managers and product leaders. Held at MC Digital in Porto, it covers product strategy, AI-era decision-making, discovery and growth for startup and scaleup operators in an intimate format.

Munich, Germany 28 Sept 2026 – 30 Sept 2026 Festival In-person €€€

Europe's premium founder festival at ICM Munich, blending high-signal startup networking with curated investor access and Oktoberfest culture. The event limits attendance to maintain quality, with thousands of founders and investors and structured matchmaking for fundraising and partnerships.

Osijek, Croatia 28 Sept 2026 – 30 Sept 2026 Conference In-person €€

CSC 26 is the 10th edition of Croatia's International Cybersecurity Conference, held at the Kulturni centar Osijek. The multi-day event gathers cybersecurity professionals, researchers and vendors for technical talks, hands-on sessions and networking, and is organised by the Croatian Cybersecurity Institute in eastern Croatia.

Nicosia, Cyprus 28 Sept 2026 – 30 Sept 2026 Conference In-person €€

An independent, not-for-profit annual policy conference organized by Oxygono in association with the Delphi Economic Forum, held at The Landmark Nicosia. The forum brings together political leaders, the public and private sectors, media, academia and civil society to debate public policy, the economy, innovation and technology in Cyprus.

Copenhagen, Denmark 28 Sept 2026 – 2 Oct 2026 Conference In-person €€€

A major software-engineering conference at TAP1 in Copenhagen under the 2026 theme of engineering for reality, covering distributed systems, testing and debugging, legacy modernization, resilience and observability, security, sustainable computing and agentic AI software development. It is one of the longest-running developer conferences in the Nordics.

Graz, Austria 28 Sept 2026 – 2 Oct 2026 Demo Day In-person

A one-week intensive deep-tech commercialization program, successor to the I.E.C.T. Summer School, for ambitious founders preparing a pre-seed or seed raise within the next year. The week of mentorship and collaboration culminates in a Demo Day where founders pitch to a curated group of investors and corporate partners. In 2026 the program is hosted in Styria.

Copenhagen, Denmark 28 Sept 2026 – 29 Sept 2026 In-person €€

A two-day Nordic deep-tech and research-commercialisation matchmaking fair at Industriens Hus in Copenhagen under the 2026 theme of defence, resilience and safety. Tracks cover quantum, AI and digital, greentech and food, biotech and pharma, and medtech and diagnostics, connecting startups, researchers and industry across the Nordics.

Stockholm, Sweden 28 Sept 2026 – 29 Sept 2026 Summit In-person €€

Annual foodtech 'un-conference' organized by Sweden Foodtech at Rosendals Tradgard in Stockholm, where leading foodtech companies, entrepreneurs, scientists, and investors gather to debate the future of the global food system. The 2026 programme features an EIT Food entrepreneur parade and a high-energy pitch session spotlighting top European foodtech startups.

Bilbao, Spain 29 Sept 2026 – 1 Oct 2026 Conference In-person

One of Europe's largest biotech partnering events, in its 13th edition and run by industry association AseBio, known for its high volume of one-to-one investor and company meetings. Essential for biotech and life-sciences founders raising capital or seeking pharma and research partners.

Zurich, Switzerland 29 Sept 2026 – 30 Sept 2026 Summit In-person €€€

Switzerland's largest blockchain, AI and digital-assets business conference at Kongresshaus Zurich. Two days, four stages, 3,000+ attendees and 250 speakers spanning Web3, AI and tokenized finance for founders, investors, institutions and policymakers.

Belgrade, Serbia 29 Sept 2026 – 30 Sept 2026 Conference In-person €€€

B2B game industry conference co-hosted by DevGAMM and the Serbian Games Association at Hilton Belgrade, with two days of talks, expo, and MeetToMatch networking for developers, publishers, and investors across the Balkans.

London, United Kingdom 29 Sept 2026 – 30 Sept 2026 Conference In-person

The UK's leading digital-health conference and exhibition, bringing NHS leaders, policymakers, clinicians, and tech companies together at ExCeL London. For a healthtech founder it is the key venue to understand NHS procurement, demo to buyers, and meet partners driving digital transformation in care.

London, United Kingdom 29 Sept 2026 – 30 Sept 2026 Conference In-person Free

A major cyber security gathering at Olympia London with 100+ global suppliers, three stages, live demonstrations and 100+ speakers. It attracts thousands of senior visitors and government officials from across the world, offering visibility for cyber security startups and vendors.

Sofia, Bulgaria 29 Sept 2026 Conference In-person €€

Kubernetes Community Days (KCD) Sofia is a CNCF-affiliated, single-day, single-track cloud-native conference at the Sofia Event Center, capped at around 600 attendees. The programme features practitioner talks from teams running Kubernetes in production, covering platform engineering, observability, security, GitOps, FinOps and machine learning.

Lisbon, Portugal 29 Sept 2026 – 1 Oct 2026 Summit In-person €€€

SBC Summit is Europe's largest gaming, igaming and sports-betting industry conference, hosted across the Feira Internacional de Lisboa and MEO Arena in Lisbon's Parque das Nações. It convenes thousands of operators, technology suppliers, payments providers and investors for exhibitions, conference tracks, a startup and investment angle, and large-scale networking.

Where events are happening

Each circle represents a city with events this month.

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