Oliver Barnes
Open Source Developer at Self-employed
New York, New York, United States
Summary
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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 (151)
rubocop10
google-cloud-platform10
democracy10
ruby10
gcp10
google-cloud10
cloud-platform10
linter10
session-management10
code-analyzer10
kubelet10
analyzer10
json-api10
google10
static-code-analysis10
Programming languages (9)
Github contributions (5)
liquidvotingio/auth
Apr 2020 - Aug 2021
Authentication service for liquidvoting.io
Contributions:36 reviews, 61 PRs, 80 pushes in 1 year 3 months
authentication-servicenodejsauthentication
mainmatter/reStations
Mar 2025 - Mar 2025
Implementation of the OSDM API spec's Places API, backed by Trainline EU's stations dataset
Contributions:48 reviews, 35 PRs, 61 pushes in 25 days
osdmrailrust
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