Startup events in December 2026 – Calendar

Major software engineering conference on cloud architecture, CI/CD, Kubernetes, observability, platform engineering, and secure DevOps practices. Valuable for DevTools startups targeting technical buyers and for startup teams recruiting senior backend and cloud talent.

European edition of the leading SaaS conference, bringing together B2B SaaS founders, operators, and investors for tactical sessions on scaling ARR, go-to-market strategy, and fundraising in the European market.

One of Europe's top software development conferences, held annually in Vilnius. Features world-class speakers on software architecture, DevOps, functional programming, and engineering leadership. Attracts 800+ senior developers and CTOs from across Europe. Tickets from EUR 300-600 with early-bird discounts.

One of Poland's largest community cybersecurity conferences, returning for its 8th edition at the PGE Narodowy stadium. For security founders, pentesters, and infrastructure engineers it offers a large practitioner audience and a strong recruiting and networking surface in the Polish infosec scene.

The sixth edition of Estonia's emerging-tech festival, held at Vaba Lava in Narva on the EU's eastern edge. Gathers builders, founders, and operators around Web3, AI, and creative industries with a substance-over-hype focus — a rare flagship tech event outside the capital.

A week-long founder retreat in Madeira combining business education, partnership-building, and wellness, aimed at established founders running profitable businesses rather than first-timers. Its value is high-trust networking and strategic-partnership formation in a small-group island setting, plus a tie-in to Madeira's digital-nomad ecosystem.

One of the largest Google Developer Group events in Europe, drawing 1,500+ developers for sessions on Android, Flutter, cloud, and machine learning. Istanbul's massive developer community makes this a key hiring and community-building event for tech companies expanding to Turkey.

A two-day NHS innovation festival with six distinct shows under one roof and hundreds of speakers at the Business Design Centre, London. For a healthtech founder it offers concentrated access to NHS leaders, clinicians, and health investors — useful for validation, partnerships, and early traction.

European-wide open-source business and technical conference in Brussels, bringing together 5,000+ OSS contributors, European corporate users of open source, and public-sector decision-makers. Program covers enterprise OSS strategy, supply-chain security, European digital sovereignty, and sustainable OSS funding models. Tickets EUR 200-500.

Webrazzi's anniversary edition fintech conference at Wyndham Grand Istanbul Levent, bringing together Turkish industry leaders to discuss digital banking, open banking, blockchain integration, AI-driven financial applications, and digital payments.

Europe's leading partnering event for early-stage life-sciences innovation and technology transfer, in its 15th edition at Parc Chanot in Marseille. Built around one-on-one partnering meetings, it is ideal for biotech and medtech founders seeking licensing deals, academic collaborations, and early investors.

The 26th edition of One Nucleus's flagship London life-science networking conference, themed around maximising returns from life-science innovation. For a biotech or life-science founder it is a focused day of partnering and investor networking within the UK life-sciences cluster.

Annual year-end networking mixer organized by SUP46 (Start-Up People of Sweden) in central Stockholm, bringing together the Swedish tech community for informal drinks, reflections on the year, and forward-looking talks from prominent founders. 500+ attendees. Free with RSVP, limited capacity.

International startup summit co-organized by the Turkish Presidency's Investment Office, bringing 5,000+ attendees from EMEA and Central Asia. Features the Take Off Pitch Contest with cash prizes, B2B matchmaking, and strong government support. Free for selected startups and investors.

Year-end informal meetup organized by Startup Lisboa for the Portuguese founder community. One evening of mulled wine, 3-4 short founder fireside chats, and open networking at Startup Lisboa's Lisbon office. 200+ attendees. Free with RSVP.

Italy's biggest annual startup conference organized by StartupItalia, featuring keynotes from Italian unicorn founders, pitch marathons, and the Italian Startup Awards. 5,000+ attendees in Milan. Free to EUR 50.