Andrej Gajdos

About

Andrej Gajdos is a freelance full-stack web developer with over 10 years of experience, specializing in JavaScript technologies including React.js, Node.js, and Next.js. He has a strong foundation in computer science and has held roles such as software architect and fractional CTO. Andrej has led and delivered over 20 projects for clients ranging from solo founders to global companies like Apple and Binance. He focuses on building scalable, maintainable, and responsive web applications tailored for startups, digital agencies, and enterprises. His technical skillset covers front-end frameworks (React, Gatsby, Next.js), back-end technologies (Node.js, Express.js, Koa.js), databases (PostgreSQL, MongoDB, MySQL), and cloud infrastructure (AWS, Heroku, Firebase). Additionally, Andrej works with technologies like GraphQL, D3.js, Leaflet, and Web3, and has experience creating Chrome extensions and integrating third-party APIs. Apart from development, he advises teams on software architecture, UI prototyping, DevOps, and SEO, and mentors developers on best practices. His projects include MVPs, single-page applications, and complex platforms for sectors such as education, fintech, and blockchain. Andrej follows a structured, process-driven development strategy with an emphasis on SMART goal setting, testing, and long-term client relationships.