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Hi, I’m Mykola Sirko, a Full-Stack Developer with over 5 years of hands-on experience building scalable web applications and AI-powered systems. I excel in modern JavaScript ecosystems, including React, Next.js, Angular, Node.js, and NestJS, and I enjoy designing end-to-end solutions from idea to production. I routinely integrate LLMs, RAG pipelines, and agentic workflows into production products, thrive in startup environments with rapid feature delivery, and work well independently or with distributed teams. I prioritize clean, maintainable code and strong collaboration.…Hi, I’m Mykola Sirko, a Full-Stack Developer with over 5 years of hands-on experience building scalable web applications and AI-powered systems. I excel in modern JavaScript ecosystems, including React, Next.js, Angular, Node.js, and NestJS, and I enjoy designing end-to-end solutions from idea to production. I routinely integrate LLMs, RAG pipelines, and agentic workflows into production products, thrive in startup environments with rapid feature delivery, and work well independently or with distributed teams. I prioritize clean, maintainable code and strong collaboration.

Mykola Sirko

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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Hi, I’m Mykola Sirko, a Full-Stack Developer with over 5 years of hands-on experience building scalable web applications and AI-powered systems. I excel in modern JavaScript ecosystems, including React, Next.js, Angular, Node.js, and NestJS, and I enjoy designing end-to-end solutions from idea to production. I routinely integrate LLMs, RAG pipelines, and agentic workflows into production products, thrive in startup environments with rapid feature delivery, and work well independently or with distributed teams. I prioritize clean, maintainable code and strong collaboration.…Hi, I’m Mykola Sirko, a Full-Stack Developer with over 5 years of hands-on experience building scalable web applications and AI-powered systems. I excel in modern JavaScript ecosystems, including React, Next.js, Angular, Node.js, and NestJS, and I enjoy designing end-to-end solutions from idea to production. I routinely integrate LLMs, RAG pipelines, and agentic workflows into production products, thrive in startup environments with rapid feature delivery, and work well independently or with distributed teams. I prioritize clean, maintainable code and strong collaboration.

Available to hire

Hi, I’m Mykola Sirko, a Full-Stack Developer with over 5 years of hands-on experience building scalable web applications and AI-powered systems. I excel in modern JavaScript ecosystems, including React, Next.js, Angular, Node.js, and NestJS, and I enjoy designing end-to-end solutions from idea to production.

I routinely integrate LLMs, RAG pipelines, and agentic workflows into production products, thrive in startup environments with rapid feature delivery, and work well independently or with distributed teams. I prioritize clean, maintainable code and strong collaboration.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Ukrainian

Fluent

English

Advanced

Work Experience

Full Stack Developer at Freelancer

December 1, 2021 - Present

Worked on 5+ full-stack projects across diverse industries including e-commerce, education, health & wellness, and event management. Owned all aspects of development: architecture design, implementation, testing, deployment, and production support. Integrated LLM and RAG-based AI features across multiple products, improving automation and user experience. Consistently delivered projects on schedule with clean, maintainable code.

Front-End Developer at StarApps

July 1, 2021 - May 1, 2022

Implemented features and fixed bugs for 3 client projects using Angular and Node.js. Collaborated with backend engineers on API design and performance optimization. Worked with AWS infrastructure (EC2, S3) and Docker for consistent deployments. Participated in agile ceremonies, code reviews, and knowledge sharing within the team.