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oleg koval

@oleg-koval

Joined October 2013

49 Followers

101 Following

AI Insights & Achievements

54/ 100

Consistency

13 day streak.

Veteran

Coding for 13 years.

Profile README

Backend engineer. 13 years of shipping products. I build systems that handle money, scale under pressure, and don't page you at 3am.

🇳🇱 Based in Netherlands | Currently building fintech infrastructure

DynamoDB Lambda ECS SQS CDK Redis Elasticsearch Event-driven DDD

What I believe

Ship first, optimize later. The best architecture is the one your team can maintain at 2am. Monoliths aren't dirty words. Most systems don't need microservices - they need clear boundaries. Code is liability. The best feature is the one you don't have to build.

A bit more about me

When I'm not writing code, I'm behind a camera - art, fashion, and documentary photography. I've worked in startups from Lviv to Amsterdam. I've seen codebases that should've stayed prototypes and prototypes that became products serving millions. The common thread? Pragmatism beats cleverness. Every time.

LinkedIn | Photography | CV - Portfolio | Email

_{Available for interesting problems and coffee chats.}

Organizations

DW

Public Repos

97

Total Stars

242

Total Forks

39

Public Gists

29

Top Languages

Based on primary language of repositories

Recent Activity

Contribution Graph

Activity Timeline

Commits and contributions grouped by day, week, or month.

High productivity periods

Most active day: January 17th, 2026 • 31 contributions

Most active week: Jan 12–Jan 18 • 34 contributions

Most active month: Nov 2025 • 143 contributions

Pushed to snyk-fix-7d8a55d613a6cf550c125c81adbc60dd at oleg-koval/cookbook

February 3rd, 2026 1:56 PM

opened pull request in oleg-koval/cookbook

February 3rd, 2026 1:56 PM

Created branch snyk-fix-7d8a55d613a6cf550c125c81adbc60dd in oleg-koval/cookbook

February 3rd, 2026 1:56 PM

opened pull request in oleg-koval/node-ddd-boilerplate

January 30th, 2026 5:48 PM

Pushed to snyk-fix-805771df5c9319b333aff39d75e5f2bc at oleg-koval/node-ddd-boilerplate

January 30th, 2026 5:48 PM

Created branch snyk-fix-805771df5c9319b333aff39d75e5f2bc in oleg-koval/node-ddd-boilerplate

January 30th, 2026 5:48 PM

opened pull request in oleg-koval/ya-skeleton

January 30th, 2026 2:58 PM

Pushed to snyk-fix-f59f488c0c5c5d3c219e2cc5eefe9824 at oleg-koval/ya-skeleton

January 30th, 2026 2:58 PM

Created branch snyk-fix-f59f488c0c5c5d3c219e2cc5eefe9824 in oleg-koval/ya-skeleton

January 30th, 2026 2:58 PM

Pushed to snyk-fix-37bc088303d6d1375d694978b0a59c9f at oleg-koval/cookbook

January 27th, 2026 12:28 PM

GitHub Analytics

oleg koval

Consistency

Veteran

What I believe