Available to hire
Hi, I’m Robin Kovaljov, a Senior Full Stack Engineer with 12 years of experience designing, building, and scaling SaaS web applications using Node.js, React.js, Next.js, and PHP. I have a strong background in RESTful and GraphQL APIs and database design with PostgreSQL, MySQL, and MongoDB.
My experience across full lifecycle projects in multiple industries makes me a valuable asset to any team. I’m flexible and adaptable, thriving in collaborative environments.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Advanced
Work Experience
Senior Full Stack Engineer at Codegram
December 1, 2023 - PresentLed the development of multiple web applications using Node.js, Express.js, Laravel, React.js, Vue.js, PostgreSQL, MySQL, and Sequelize; designed a backend integrated with Prismic CMS for real-time results; created responsive UI/UX components with Material UI and Ant Design; built a GraphQL data layer for centralized delivery and scalable traffic; integrated tools (Google Maps API, Stripe, Twilio, Firebase); worked in cross-functional teams and mentored junior developers.
Full Stack Developer at Bluebird
June 1, 2020 - November 1, 2023Migrated legacy Node.js and MySQL site to a modern WordPress PHP/MySQL platform; executed content migration of 10,000+ pages; developed custom WordPress themes and site structures; implemented responsive layouts; improved technical SEO and performance; applied security hardening best practices.
Full Stack Developer at Chudovo
May 1, 2017 - May 1, 2020Worked on a large-scale healthcare application ecosystem; backend with Express.js and MongoDB; React-based frontend modules; designed REST APIs for reliable data exchange with internal systems and third-party healthcare services; contributed to Agile processes and CI/CD pipelines using Azure DevOps.
Backend Developer at Dashbouquet
November 1, 2013 - May 1, 2017Built core backend features for an in-city delivery platform using Node.js; implemented REST APIs, maps and route logic, and secure authentication/authorization with OAuth 2.0 and JWT; collaborated with frontend, designers, and QA to deliver stable backend solutions.
Education
Master of Science in Engineering at Tallinn University of Technology
January 1, 2011 - January 1, 2013Bachelor of Science in Engineering at Tallinn University of Technology
January 1, 2008 - January 1, 2011Qualifications
Industry Experience
Software & Internet, Professional Services, Healthcare, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Hire a Full Stack Developer
We have the best full stack developer experts on Twine. Hire a full stack developer in Tallinn today.