London.js with Tessl & incident.io - Wednesday 25th February 2026!

This is a mega link-up with two of my favourite London based companies - we're absolutely buzzing to have them supporting London.JS.

So without further ado, join us, London.JS, on Wednesday 25th February from 6pm-8.30pm in partnership with Tessl & incident.io (this is their 3rd event with us).

Register now to avoid disappointment as London.JS access is limited and spaces always fill up fast!

Doors open at 6:00pm
Talks start at 6:30pm
Ends / head to the pub at 8.30pm ish

Address - 210 Pentonville Rd, London N1 9JY
Map - https://share.google/yxUCiPc7fx7wwIxwA

Our February Talks

Sahil Deshmukh - *Member of Technical Staff, Tessl - "*I’ve Stopped Hand Writing Code! (And I'm not the only one)"

Writing features entirely by hand is becoming rare. Teams are shipping faster than ever - 400 PRs in two weeks for team Tessl - while breaking production less.

This isn’t just AI magic. It’s the result of restructuring how work gets done. This talk breaks down a practical, AI-native workflow - using AI as a development multiplier, not a replacement - and the systems that keep speed from turning into chaos.

It tackles the hard questions: trusting code you didn’t write, debugging AI-generated changes, and choosing the right trade-offs at an early-stage startup.

You’ll leave with practical, battle-tested patterns you can adapt to your own setup.

Merlin Mason - Product Engineer, incident -"Building a modern post-mortem writing experience"

An exploration of post-mortems in incident response - and how we built a rich text editor to create an exceptional writing experience.

Gillian Yeomans - Product Engineer, Granola - "Teaching My Computer to Be Helpful (And Occasionally Weird)"

OpenClaw is an open-source agent that's caught the headlines - find out how I use it at home and at work, and whether it lives up to the hype. I'll cover the setup, the safety config, and a range of use cases from the practical (research, holiday booking) to the questionable (unsolicited poetry to friends). Delegating to a computer turns out to be a good way to learn what delegation actually requires.

Our Hosts

Tessl is the package manager for AI agent skills, helping developers discover, version, test, and continuously improve high-quality agent context.

Our Sponsor

incident.io is the single place you turn to when things go wrong - trusted by 1,000+ companies like OpenAI, Lovable, and Netflix. We help engineering teams respond to and learn from incidents, minimise downtime, and focus on solving the problems that matter.

Come to London.JS & learn more about the changing face of JavaScript across all industry landscapes.

We're a very inclusive meet-up representing a diverse community of awesome engineers

About the London.JS organisers...

James McLeod, Open Source Program Lead, NatWest Group
https://www.linkedin.com/in/jamesmcleod/

Jordan Potts, Head of Contract, Albany Growth
https://www.linkedin.com/in/jordan-potts-albany/

Will Laing, Co-Founder, Plan:it
https://www.linkedin.com/in/willhlaing/
https://weareplanit.com/

• Refreshments*
  A variety of food & drink will be served. We will endeavour to cater for allergies & dietary requirements. This won't just be pizza & beer either...

Things to note

• A desire to explore JavaScript from different points of view is absolutely recommended
• Feel free to bring your JS projects along
• All engineering levels are welcome
• Please RSVP to secure a place
• Please ask plus 1's to sign up to the group & RSVP
• Spaces are limited so techies will get priority

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• Code of conduct: http://confcodeofconduct.com
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