TL;DR (Decision): If you want to speak at a frontend-leaning conference in BE/FR/NL/DE, five CFPs are still open as of 30 Apr 2026. React Day Berlin is the only React-branded one [1]. For broad frontend, Frontmania (Utrecht) [2] and code.talks (Hamburg) [3] close first (mid-May / late-May). Both DevFest Paris [4] and DevFest Belgium [5] carry frontend tracks and stay open into late June. The marquee Amsterdam/Paris events (JSNation, React Summit, Vue Amsterdam, React Paris, dotJS) are either past or have closed CFPs for 2026 — submit early for next year.
Open CFPs — React & frontend, BE/FR/NL/DE (as of 2026-04-30)
| Conference | City | Conf dates | CFP closes | Frontend / React fit | Submit |
|---|---|---|---|---|---|
| Frontmania 2026 | Utrecht 🇳🇱 | Oct 7, 2026 [6] | May 31, 2026 [2] | Pure frontend conference; tracks: “new & fancy”, BFF, methodology, AI, future [6] | Sessionize |
| code.talks 2026 | Hamburg 🇩🇪 | Nov 4–5, 2026 [3] | May 15, 2026 [7] | Dedicated Frontend track among 13 areas (GenAI, Architecture, DevEx, …) [3] | cfp.codetalks.com |
| DevFest Belgium 2026 | Mons 🇧🇪 | Nov 27, 2026 [7] | Jun 22, 2026 [7] | “Mobile & Web Development” track: PWA, frameworks, accessibility [5] | conference-hall.io |
| DevFest Paris 2026 | Nanterre 🇫🇷 | Nov 27, 2026 [4] | Jun 30, 2026 [4] | Explicit Frontend / UI / UX track: Angular, Vue, JS, TS, React, Figma [8] | conference-hall.io |
| React Day Berlin 2026 | Berlin 🇩🇪 | Dec 4 & 7, 2026 [1] | Aug 12, 2026 [1] | 7th edition; React-only; 2026 themes = AI integrations, system design, full-stack, reliability [9] | GitNation CFP |
⚠ React Day Berlin is unpaid (speaking fee No) per cfp.watch [7]; travel/accommodation policy not stated on the public page.
⚠ DevFest Belgium 2026 page still shows date “à définir” on the official site [10] — the Nov 27 date and Jun 22 deadline come from cfp.watch [7]. Confirm before booking travel.
Closed or already past — for reference
| Conference | City | Status as of 2026-04-30 |
|---|---|---|
| Vue.js Amsterdam 2026 | Amsterdam 🇳🇱 | ✗ Past (Mar 12–13, 2026) [11] |
| React Paris 2026 (BeJS) | Paris 🇫🇷 | ✗ Past (Mar 26–27, 2026); CFP closed [12] |
| Voxxed Days Amsterdam 2026 | Amsterdam 🇳🇱 | ✗ Past (Apr 1–2, 2026) [13] |
| Devoxx France 2026 | Paris 🇫🇷 | ✗ Past (Apr 22–24, 2026); CFP closed Jan 11 [14] |
| dotJS 2026 | Paris 🇫🇷 | ⚠ CFP closed Apr 28, 2026 (two days ago); event Sep 18 [15] |
| JSNation 2026 | Amsterdam 🇳🇱 | ⚠ CFP closed Mar 2, 2026; event Jun 11 & 15 [16] |
| React Summit 2026 | Amsterdam 🇳🇱 | ⚠ CFP closed; event Jun 11–15 (51 speakers already announced) [17] |
| NG-DE 2026 | Berlin 🇩🇪 | ✗ Cancelled [18] |
| Devoxx Belgium 2026 | Antwerp 🇧🇪 | → CFP opens Jun 1, 2026, closes Jul 17; event Oct 5–9 [19] |
Notes on fit
- Pure-React submitters: only React Day Berlin in 2026 — and you have until August. The other four are general frontend / community tracks where React content competes with Angular/Vue/Svelte/etc.
- Pure-frontend audience: Frontmania is the only “frontend-only” event with an open CFP; everything else is multi-track.
- Travel-friendly deadlines: code.talks (May 15) and Frontmania (May 31) close first — submit those first if you’d like to reuse the same talk at later events.
- If you missed dotJS / NDC Oslo / Devoxx France: Devoxx Belgium opens its CFP on June 1, 2026 [19] — a large general dev conference in Antwerp with strong web/frontend tracks historically. Watch that date.
Methodology
Cross-checked each conference against the official site, the CFP platform (Sessionize / Conference Hall / PaperCall / GitNation), and the cfp.watch aggregator [7]. Where the official site lacked a deadline (DevFest Belgium, code.talks), the cfp.watch listing supplied it; flagged with ⚠. Excluded: meetups, hackathons, conferences without a public CFP (e.g. SmashingConf books speakers by invitation). Included only events whose CFP window contains 2026-04-30 in BE/FR/NL/DE.