Mykhailo

Software Engineer Mykhailo Karabinovych
[відкрити контакти](див. вище в блоці «контактна інформація») | LinkedIn | Portfolio | Ukraine, remote

Summary
Software Engineer with 4+ years of experience building secure, scalable backend and full-stack systems. Strong in Node.js,
TypeScript, Python, PostgreSQL, Redis, and Clean Architecture. Delivered measurable impact: ~15% faster development, 30%
lower API latency, 85% test coverage.

Skills
Languages: TypeScript, JavaScript, Python, SQL, HTML, CSS
Backend: Node.js, NestJS, Express, REST APIs, PostgreSQL, Redis, RabbitMQ, Kafka, Clean/Hexagonal Architecture, TDD, SOLID
Frontend: Next.js, Vue.js, Responsive Web Design
Cloud & DevOps: GCP, Docker, CI/CD (GitLab CI, GitHub Actions), Linux, Prometheus
Testing: Jest, Vitest, Supertest
AI: OpenAI API, AI-assisted development

Experience
Fullstack Developer — Freelance
Remote | January 2024 – Present
●Built and deployed web apps and APIs with Node.js (NestJS, Express) and Next.js, serving 10k+ monthly users.
●Designed REST APIs with PostgreSQL and Redis, reducing response times by 30%.
●Developed Python automation services, cutting manual processing by 40%.
●Set up Docker and CI/CD on GCP, achieving 99.9% uptime and 40% faster releases.
●Integrated OpenAI API for AI-assisted features, increasing user engagement by 25%.

Software Engineer (Node.js, TypeScript) — Reactor Studio / Kiwi.com
Zagreb, Croatia | April 2022 – October 2023
●Migrated a large JavaScript codebase to TypeScript, reducing development time by ~15% and runtime errors by 25%.
●Implemented Hexagonal Architecture, raising test coverage to 85% with Jest and Supertest.
●Built secure insurance APIs with Prometheus metrics, reducing p95 latency by 30%.
●Automated GitLab CI/CD and Docker workflows, accelerating release cycles by 40%.
●Used RabbitMQ/Kafka for event-driven processing.

Frontend Developer (Vue.js) — Gabsoft
Chernivtsi, Ukraine | May 2021 – March 2022
●Built responsive SPAs with Vue.js and REST APIs.
●Created reusable components, reducing code duplication by 30%.
●Improved load times by 35%, raising Lighthouse scores to 90+.

Education
●Bachelor’s Degree in Applied Linguistics
Państwowa Akademia Nauk Stosowanych w Przemyślu — June 2019 | 4.8/5.0
●Intensive Course in HTML, CSS & JavaScript
SoftServe University — July 2019