Olger Oeselg
Staff Software Engineer at Bigbank
Tallinn, Harju County, Estonia
Summary
👤
Senior🎓
Top SchoolOlger Oeselg is a Senior Software Engineer from Tallinn with 20+ years building mission-critical systems across banking, fintech, telecom and data engineering, now focused on AI-first full-stack development. He has led engineering teams and returned to hands-on roles to architect and run a multi-country internet banking platform (token auth, deposit onboarding, terabyte document stores) on Kubernetes/OpenShift with strong CI/CD and test automation. At Bigbank he also drove AI adoption for 100+ engineers, created internal guidance and a largely AI-generated metrics system for coding-agent usage, and built tooling that validated AI-assisted code in critical cloud migrations. His background spans high-throughput messaging, SOA migrations, DB performance tuning and terabyte-scale ETL for ML, and he pairs practical reliability and security focus with experimenting on long-lived AI agents using smart memory. Proficient in Node.js/TypeScript, Vue, MongoDB/Postgres, Redis and containerized platforms, he brings both deep operations experience and a knack for making AI tooling reliable in production.
10 years of coding experience
20 years of employment as a software developer
Graduated, Informatics, Graduated, Informatics at Tallinna TehnikaülikoolInformatics, Informatics at Tartu Ülikooli TeaduskoolSaaremaa Ühisgümnaasium
English, Estonian
Stackoverflow
91reputation
6kreached
1answer
0questions
Github Skills (32)
kotlin7
mongodb6
webapp6
database6
multer6
nodejs6
server6
windows6
mongodb-memory-server6
modular6
gridfs-stream5
micro-framework5
java5
multipart4
testing4
Programming languages (4)
Github contributions (5)
abitwise/express-api-test
Oct 2018 - Sep 2019
Express.js API Testing Utility
Contributions:45 commits, 36 pushes, 1 branch in 11 months
apijestjs-apitestingexpress
abitwise/dotfiles
Mar 2017 - Dec 2024
:wrench: .files, including ~/.macos — sensible hacker defaults for macOS
Contributions:1 review, 2 PRs, 42 pushes in 7 years 10 months
sensiblekarabinerasdfwrenchstow
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