Oliver Barnes
Senior Software Engineer at HEY.com
Lisbon, Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolOliver Barnes is an open source developer based in New York with 11 years of professional experience and a couple of decades of hands-on involvement across fast-evolving and legacy codebases. He ships backend and tooling in Rust, Ruby, and Elixir—recent work includes AI-integrated editor features for Zed and gateway integrations for LLM providers at TensorZero. Oliver has a strong track record improving observability and performance in long-lived systems (notably cutting latency by up to 50% at Rail Europe) and advising on architecture and team processes. Comfortable in multicultural, distributed teams, he bridges practical engineering with standards work—having contributed to an OSDM-compliant stations service and coordinated with standard maintainers. Currently self-employed and focused on open source projects, he’s migrating payment and event-sourcing systems and building API frameworks and session stores in Rust while exploring AI engineering.
11 years of coding experience
24 years of employment as a software developer
University of São Paulo
English, Portuguese, Spanish, Catalan, French, Italian
Stackoverflow
2,151reputation
141kreached
34answers
21questions
Github Skills (119)
python10
democracy10
psych10
linter10
backend10
backend-framework10
auth10
rust-lang10
tree-sitter10
llmops10
ai10
code-editor10
gpt10
rust10
artificial-intelligence10
Programming languages (8)
Github contributions (5)
participateapp/web-client
Sep 2016 - May 2017
Participate! is an app for democratic decision making
Contributions:42 PRs, 57 pushes, 32 branches in 8 months
decision-makingdemocraticreactdecisionliquid-democracy
oliverbarnes/participate
Jan 2015 - Aug 2016
Contributions:26 PRs, 144 pushes, 32 branches in 1 year 6 months
democratic
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.