Oleksandr Balyshyn
Java/Scala Software Engineer ·
Nine years on the JVM. Telecom ingest at 1M events/sec sustained, 10M at peak, under 100ms. Service onboarding cut from three weeks to two days. 20% off the cloud bill. Off the clock: 51 public repos — ESP32 firmware, OBS tooling, Scala 3 libraries.
Nine years, four companies
Telecom pipelines at 80 billion events a day. Healthcare microservices under HIPAA. A cross-border energy exchange wired into six national grids.
What I reach for
Bar length is years in production, straight from the roles above. Not a self-scored percentage — those measure confidence, not experience.
Everything I have shipped
Eighty repositories, three accounts, grouped by what they do. Each entry is written from that repo's README; language, stars and last commit come from the GitHub API. The search index ships with the page — nothing you type leaves the browser.
Khmelnitsky National University
Where to find me
Kyiv, Ukraine. Nine years remote across US and European hours. Email is fastest.