FUN OCaml 2027 is a two-day open source hacking event for OCaml enthusiasts and professionals, taking place on January 25–26, 2027 at the MLR Convention Centre in Bengaluru, India. It is hosted by FP Launchpad, the Centre for Functional Systems Research and Education at IIT Madras.

Day 1 is dedicated to talks (including a keynote), Day 2 to hands-on workshops and collaborative hacking on OCaml projects. Registration costs only a symbolic fee, which includes free food and drinks* for all attendees. Talks are live-streamed, and recordings are published on watch.ocaml.org and YouTube.

What we are looking for

We welcome submissions from all experience levels — first-time speakers, industry practitioners, academic researchers, and open source maintainers, from anywhere in the world. Topics include (but are not limited to):

• OCaml in production: architectures, war stories, performance
• The OCaml toolchain and ecosystem: compiler, dune, merlin, LSP, tooling
• Type-driven development, advanced type systems, and language techniques
• Alternative backends and targets (JavaScript, WebAssembly, native)
• Teaching OCaml, onboarding teams, and growing communities
• Open source OCaml projects you want to hack on during the event
• Anything else the OCaml community would enjoy

Formats

• Talk — 25 minutes plus 5 minutes Q&A (Day 1)
• Workshop — 2–3 hours, hands-on, participants should follow along on their laptops (Day 2)

If you have an idea that fits neither format, submit it anyway and tell us what you have in mind.

Speaker support

Limited financial support is available for accepted speakers who need assistance with travel or accommodation.

Please note: we cannot reimburse speakers directly. Instead, we book and pay for your travel and accommodation on your behalf. This policy is required due to money laundering regulations — we are unable to make exceptions. If you would like to request support, indicate this when submitting (there is a question in the form) and we will follow up individually and confidentially.

Important dates

• CFP closes: September 30, 2026 (23:59 AoE)
• Notifications: early October 2026
• Conference: January 25–26, 2027

Submissions and edit requests after the deadline are possible while reviews are ongoing, but early submissions are preferred. We will approve submissions early so you can immediately start your visa application. We will provide letters to support the visa application to speakers and attendees.

How to submit

1. Create an account below (or log in if you already have one)
2. Fill in your profile — the bio is shown on the conference website
3. Submit your proposal with an abstract (and notes for the reviewers, if you like)

You can edit your submission at any time until the CFP closes, and you can submit multiple proposals. Questions? Write to organizer@fun-ocaml.com or join the FUN OCaml Discord.

We are looking forward to your submission!