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51 followers · 101 following

Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx4Achievement: Arctic Code Vault ContributorAchievement: Starstruck

Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx4Achievement: Arctic Code Vault ContributorAchievement: Starstruck

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@dwyl

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oleg-koval/README.md

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.

Latest writing

- [33 Million Accounts Exposed: What the Condé Nast Breach Teaches Engineering Leaders](https://olko.substack.com/p/33-million-accounts-exposed-what)- [When Someone Dismisses Your Work. Why You Should Keep Building Anyway](https://olko.substack.com/p/when-someone-dismisses-your-work)- [From Idea to Impact: Applying the "RADIO-AI" Pattern for Effortless AI Agent MVPs](https://olko.substack.com/p/from-idea-to-impact-applying-the)

➡️ More on Substack

LinkedIn | Photography | CV - Portfolio | Email

Available for interesting problems and coffee chats.

Pinned Loading

  1. trembita trembita Public

    Request wrapper for consuming third-party services

    JavaScript 10

  2. eduolalo/moment-business-days eduolalo/moment-business-days Public

    This is a momentJS plugin that allows you to use only business days (Monday to Friday)

    JavaScript 243 68

  3. koajs/bunyan-logger koajs/bunyan-logger Public

    Koa middleware for bunyan request logging

    JavaScript 107 30

  4. counter-interview.dev counter-interview.dev Public

    a collaborative collection of interview questions collected from both sides of the game: Interviewer(s) and Interviewee.

    SCSS 113 9

  5. semantic-release-npm-github-publish semantic-release-npm-github-publish Public

    Github template for sharable configuration of semantic-release It helps with publishing to npm & Github generates changelog & release notes for any type of keywords.

    JavaScript 33 18

  6. brevis brevis Public

    URL shortener service. Build with Serverless AWS Lambda, Atlas Mongo DB, Typescript, Node.js 14

    TypeScript 3