Jon Bernhardsen
Back End Developer at Ruter As
Lisbon, Portugal
Summary
👤
Senior🎓
Top SchoolJon Bernhardsen is a seasoned back-end developer with over 15 years of hands-on experience across oil & gas, fintech, blockchain, and micromobility, currently building resilient APIs for Ruter in Lisbon. He specializes in Node.js and TypeScript backends, GraphQL (Apollo), message-driven systems with Kafka, and operational data stores like MongoDB and Redis, and has a knack for eliminating subtle race conditions in distributed systems. Jon has led end-to-end projects—designing architectures, CI/CD pipelines and devops on Kubernetes and Azure—and brought blockchain payment flows and off-chain scaling solutions into production. He combines deep engineering practice with pragmatic system design, producing reusable testing patterns and synchronization libraries that reduce operational risk. Notably, he has fixed long-standing Apollo Gateway/Federation issues enabling GraphQL subscriptions at scale, a behind-the-scenes contribution that unlocked new real-time capabilities for his organization. Based in Portugal with a computer engineering background, he thrives on turning complex business requirements into dependable, maintainable systems.
11 years of coding experience
14 years of employment as a software developer
Bachelor, Computer Engineering, Bachelor, Computer Engineering at Western Norway University of Applied Sciences
English, Norwegian, Portuguese, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (36)
javascript10
xmlhttprequest10
fetch10
nodejs10
fetch-api10
angular-validation9
dex8
ethereum8
trading8
sdk7
cli7
scaling6
blockchain5
solidity4
vpn4
Programming languages (4)
Github contributions (5)
jonbern/fetch-retry
Mar 2016 - Jul 2022
Extend any fetch library with retry functionality.
Contributions:28 releases, 1 review, 120 commits in 6 years 4 months
xmlhttprequestjavascriptnodejsfetchretry
jonbern/climate-data-crawler
Apr 2015 - Sep 2015
Contributions:30 commits, 42 pushes, 1 branch in 5 months
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