Led end-to-end development of scalable, secure web applications across fintech and SaaS domains; designed architecture, implemented features with React, Node.js, and AWS; integrated Stripe Connect; improved reliability and reduced downtime through backend optimizations; mentored junior developers and coordinated with product teams to align features with evolving business needs.

Full-stack Developer at Freeblock

July 20, 2019 - December 20, 2020

Implemented and maintained a decentralized exchange platform using React, Next.js, Node.js, and AWS; migrated frontend from Astro to Next.js; optimized frontend performance and backend infrastructure; contributed to API design and overall system reliability.

Front-End Developer at Elink

February 20, 2018 - May 20, 2019

Built web app frontend for a financial advisor client in Kazakhstan using React, Redux, and Tailwind CSS; delivered on-site and integrated with back-end APIs; ensured responsive design and accessibility.

Full-stack Developer at Tech Fye

February 20, 2021 - January 20, 2024

Implemented scalable web infrastructure with Next.js, React, and AWS; contributed to real-time data processing and portfolio management; improved data processing speed by 35% via API and microservice optimizations.