Hi! My name is Dmytro, and I am a full-stack JavaScript engineer who writes code that works today and doesn't become a problem tomorrow.
With me in your Agile team, things get built: I focus on delivering practical, maintainable solutions, and bring a mindset on getting things done and making an impact early.
Full-stack JavaScript engineer with 3+ years building React and Node.js applications in distributed systems across SaaS and iGaming.
I love to deliver solutions that solve clients problems and make their lives easier. I write code that stays maintainable, test thoroughly, and push for clear requirements before building. I work across multiple codebases in high-velocity environments, own what I ship, and raise problems early instead of coding around them.
slonnik.com (WIP)
Subscription scheduling platform for beauty salons with calendar and team management, inventory tracking, and real-time booking.
koaliti.xyz (WIP)
Customer support analysis platform using RAG over pgvector to score interactions for risk and quality.
Supports custom analysis prompts, multi-phase evaluation, and configurable workflows.
January 2025 - Present | hybrid | full-time
FIRST.DEV
Full-Stack JavaScript Engineer
Deliver features across 10+ microservices and frontend apps in sportsbook CMS and risk management systems.
Migrated frontend bundlers and container images, reducing CI/CD pipeline times by 75%.
Led internal workshops on automated e2e testing with Playwright and modern frontend technologies for the engineering team.
February 2024 - January 2025 | remote | contract
TraffGeek
Middle Full-Stack JavaScript Engineer
Led a team of 4 junior developers across multiple client projects.
Built a FinTech app for payment workflows with 97% test coverage across 500+ test cases for transaction reliability.
Built a face recognition search app (Telegram mini app) with React frontend, Express.js BFF, and image processing worker handling subscription-based searches.
January 2023 - January 2024 | remote | freelance
Ontech
Junior JavaScript Developer
Created and maintained WordPress websites.
Developed responsive landing pages with PHP, Bootstrap, and jQuery.
Built static websites with SSG (Pug, 11ty, Nunjucks).
June 2021 - February 2024 | remote | full-time
Namecheap
Senior Support Quality Analyst
Conducted 500+ quality reviews to improve engineer performance and support processes.
Authored 3+ guidelines adopted by 2,000+ employees across support and engineering teams.
July 2019 - June 2021 | hybrid | full-time
Namecheap
Technical Support Engineer
Resolved 500+ monthly SSL/TLS, domain, and web hosting technical issues with a 98% client satisfaction rate.
Authored 10+ training documents.