Bristol, UK
Top 100 Open Source Contributors in United Kingdom
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Bristol, UK
Jonathan D.A. Jewell
NUJ NEC | Open University | Formal Verification, Language Design, Dependable.& Distributed Safety-Critical Systems | Available for collaborations.
London, United KingdomBreakdown

Tom Longhurst
Developer of TUnit + Hobbyist Photographer
London, UKBreakdown

Martin Costello
.NET developer, tester and Microsoft MVP based near London working on Observability at Grafana
London, UKBreakdown

Kieran Drewett
Software Engineer
Basingstoke, UKBreakdown

Marcus Quinn
Building aidevops.sh, and lots of cool things with it. Open-Source wins. You can't lose what you give freely. Knowledge shared, multiplies.
London, UK, Los-angeles, California, England, JerseyBreakdown

Sebastien Rousseau
Payments leader, 19 years in banking. I build open-source ISO 20022, post-quantum cryptography and applied AI for finance.
London, UKBreakdown
UK Breakdown
Staffordshire, UKBreakdown

Tom J Nowell
Senior Engineer
United KingdomBreakdown
United KingdomBreakdown

Alex Brandt
Production software engineer working on reliability, observability, and feedback-loop systems.
London, UKBreakdown
near Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch, Wales, UKBreakdown
Birmingham, UKBreakdown

Burak Yigit Kaya
Helping engineers help themselves help us all. Tinkerer @getsentry
London, UKBreakdown
Manchester, UKBreakdown

james cleveland
curious creature
London, UKBreakdown

Dougal Matthews
Dad. Developer. Sometimes Speaker. Engineering at @grafana.
Glasgow, UKBreakdown

Andrew Nesbitt
Building @ecosyste-ms and @git-pkgs. Maintaining @Homebrew. Package management nerd.
Bristol, UKBreakdown

Matt Cowley
Open-source Software Engineer by night @AlveusGG π + @nodejs π + @cdnjs π οΈ
London, United KingdomBreakdown

Jamie Lynch
Android SDKs | OpenTelemetry | @paloaltonetworks
UKBreakdown

Jonathan Manning
Bioinformatics Engineer at Seqera, formerly at the EBI and in academic bioinformatics support. Keen on workflows and large-scale reproducible analysis.
Glasgow, UKBreakdown

Tomasz Tomczyk
Building crit.md
Croydon, UKBreakdown
UKBreakdown

David Taylor
Software Engineer @discourse
Oxford, UKBreakdown
UKBreakdown

Alex Waygood
Pythonista π and Rustacean π¦. CPython core dev; also a maintainer of ty, ruff, typeshed, typing_extensions and flake8-pyi.
Manchester, UKBreakdown

Squirrel
fipunk.eth Rust/Testing/DevOps Junkie. Automation & Decentralisation Maximalist. Slava Ukraini!
Essex, UKBreakdown
London, United KingdomBreakdown

Alistair Miles
Science, data, code, repeat.
Berkshire, UKBreakdown

Ben {chmark} Adams
Co-founder & CTO of @IllyriadGames, 11x Microsoft MVP, contributor to @NethermindEth; prev .NET Foundation Director
Nottingham, UKBreakdown
UKBreakdown

Paul Balaji
Engineer @hyperlane-xyz. Ex @improbable. Alum @imperial.
UKBreakdown

Matt Kane
Astro core maintainer. Created EmDash and Unpic.
UKBreakdown

James Anderson
Software engineer with an addiction to watching TV shows.
London, United KingdomBreakdown
United KingdomBreakdown
UKBreakdown
London, UKBreakdown
London, United KingdomBreakdown
UKBreakdown

Aidan Timson
Software engineer at the @OpenHomeFoundation working on @home-assistant frontend
Leicestershire, United KingdomBreakdown

George Adams
Go/Java Group Manager @microsoft Java Champion, Chairman @adoptium
United KingdomBreakdown
Bath, UKBreakdown

MichaΕ Krassowski
Mike for short. @jupyterlab maintainer, @jupyter Distinguished Contributor. PhD in omics integration/pain.
Oxford, UKBreakdown

Tom Ballard
building open source tools and side projects unrelated to the day job
UKBreakdown

Owain Lewis
AI Engineer. Director, Engineering. Founder GradientWork.
United KingdomBreakdown

Rohit Ghumare
Engineer | DevRel | GDE | CNCF, AAIF, Claude, Devin, PE Ambassador | Docker Captain | AWS CB | Ex - iii, Cloudera, Solo.io, Cerbos, Oracle, Reliance Jio
UKBreakdown

Rob Ede
Rust Web Developer | Typography, UX & Security Enthusiast | Rust + TypeScript | Lead @actix | Core @deps-rs
London, UKBreakdown

Peter Wagner
Programmer since 2010 and flyer since 2017.
East Sussex, UKBreakdown

Yasset Perez-Riverol
Senior Software Architect in Life Science. Big Data Technologies.
Cambridge, United KingdomBreakdown

Graham Campbell
OSS Maintainer | Laravel | StyleCI
York, United KingdomBreakdown

Dan Harrin
Co-creator of @filamentphp
Cardiff, UKBreakdown

Simon Bennetts
@zaproxy project lead.
United KingdomBreakdown

Ting Sun
Urban Climate Modeller
London, UKBreakdown

Tim Jacomb
Software engineer and development best practices advocate.
UKBreakdown

Jake Cattrall
Cofounder & EM @ IGDB.com
UKBreakdown

Anthony Stirling
Creator and maintainer of Stirling-PDF
UKBreakdown

Alasdair Allan
Scientist, Author, Hacker, Tinkerer, Maker and Journalist.
Exeter, UKBreakdown

Cameron
Software Engineering MSci Graduate @lancaster-university web dev / car hacker
London, UKBreakdown

Will Eastcott
Working on @playcanvas
London, UKBreakdown

Dr Laurence E. Day
World's dumbest compsci PhD. Former Haskell slinger, now Ethereum developer, researcher, and shitposter. Press buttons on the Internet for a living.
Newcastle, UKBreakdown

Rui Vieira
Principal Machine Learning engineer at Red Hat. PhD graduate in Bayesian statistics.
Newcastle upon Tyne, UKBreakdown
London, UKBreakdown

Pete Bacon Darwin
2021: Systems Engineer at Cloudflare; 2014: Angular Core team member; 2004: Dad from 2004.
London, UKBreakdown

Ed Morley
Hi! I'm the Python language owner on the Heroku Languages team.
London, UKBreakdown

Salman Muin Kayser Chishti
Software Engineer @github @actions, CS & AI BSc, Oxford Mixed Reality Research, Microsoft Certified Trainer Community Lead (former Regional Lead)
London, UKBreakdown

Yauhen Bichel
Software Engineer Β· AI platforms, self-hosted LLM systems (yserver), AI agents, distributed backends Β· Python Β· Java Β· Go Β· Co-founder MoleCare
London, United KingdomBreakdown

Jared Holgate
Senior Software Engineer, Azure Deployments and Bicep at @microsoft
Leeds, United KingdomBreakdown

Christopher Buss
Software Engineer.
United KingdomBreakdown
London, UKBreakdown
Manchester, United KingdomBreakdown
London, UKBreakdown

Lucas Colley
SciPy, Pixi, data-apis.org Maintainer
London, UKBreakdown

Parminder Klair
React, React Native, GraphQL Consultant.
Birmingham, UKBreakdown

Jon Skeet
Recruiters: please do not contact me
London, UKBreakdown

Tom Ashworth
Building things that help humans
London, UKBreakdown

Dave Page
PostgreSQL Core Team member, and Chief Technology Officer at pgEdge.
Oxfordshire, UKBreakdown

Ahmed
I Build things that works, I fix things that donβt
London, UKBreakdown

Kaxil Naik
Senior Director of Engineering at @astronomer . Committer & PMC Member, Apache Airflow. Open source advocate.
United KingdomBreakdown

Frazer Smith
System Integration Engineer, @fastify plugins team, OpenUK 2025 Honouree
United KingdomBreakdown

Jessica Smith
Software architect, developer, tech person from the UK.
UKBreakdown

Steve Ruiz
Founder & CEO, @tldraw
London, UKBreakdown

Matt Roberts
Director of Engineering at @docusign. Formerly Director of Engineering at @clauseHQ. Technical Steering Committee Chair & Maintainer for @accordproject
Oxford, UKBreakdown

Linus Norton
Software engineer
Norwich, UKBreakdown

Chris Snow
Open Source Data & AI - VAST Data
United KingdomBreakdown

Tak Tran
Humanist programmer interested in keeping technology real.
London, UKBreakdown

Rhys Evans
Rocket from the javascript
London, UKBreakdown

Benjamin T. Vincent
Causal Bayesian Data Scientist. Director of InferenceWorks Ltd.
United KingdomBreakdown

Luke Vella
Pretty good at computers.
London, UKBreakdown

Jad Ghalayini
CSO @ Autoresearch Inc. brb, formalizing the world
London, United KingdomBreakdown

Neil Martin
Senior Systems Engineer @ Jamf
London, UKBreakdown

Loris Leiva
Hi there my geeky friends! ππ¦
Brighton, United KingdomBreakdown

Danielle Maywood
23 π³οΈββ§οΈ
United KingdomBreakdown

ryoppippi
coder without AI
UKBreakdown

Frankie Roberto
Freelance interaction designer.
London, UKBreakdown

Holly Cummins
Senior Technical Staff Member at IBM. Working on Quarkus.
London, United KingdomBreakdown

Bartlomiej Plotka
Fascinated by challenging engineering problems & distributed systems. Go & OSS fan. Prometheus maintainer, Thanos co-author. CNCF Mentor.
London, UKBreakdown

Nicola Corti
React Native for Android βοΈ | Android GDE π | Maintainer of @detekt, @ChuckerTeam, @AppIntro π§ | Host https://thebakery.dev π₯ | He/Him π³οΈβπ γγγ
London, UKBreakdown

David Vreony
.NET Developer \ Analyst \ Architect with experience in Developer Experience, Financial Services, Healthcare and CTI.
UKBreakdown

Dominic Davis-Foster
Forensic Science researcher at Staffordshire University in the UK. Carrying out research into Organic Gunshot Residue
Stoke-On-Trent, UK



















