Олександр

Oleksandr Leonov
Fullstack developer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація») Kharkiv, Ukraine

Summary
Fullstack developer with 2+ years of experience in React, TypeScript, and Node.js, with additional background
in Electron desktop apps and React Native mobile development. Experienced in shaping frontend architecture,
rebuilding legacy systems, occasionally covering team lead duties, and working across the full development
lifecycle from design to deployment, with hands-on experience integrating AI coding agents into the workflow.

Skills
Languages Frontend Backend
JavaScript, TypeScript React, Next.js, Redux, Zustand, React Node.js, Express.js, NestJS
Native, Electron.js

Databases API Infrastructure & Tools
PostgreSQL, MySQL, MongoDB REST, GraphQL Git, Docker, AWS, AI-assisted coding

Experience
Gsolution Kharkiv, Ukraine
Fullstack Developer August 2025 - Present
• Worked across CRM, crypto, and internal business products with a primary focus on frontend, owning technical
decisions and legacy system modernization while collaborating closely with backend and QA.

• Temporarily performed Team Lead responsibilities: task planning and distribution, progress tracking, code
reviews, and technical guidance for teammates.

• Owned parts of the release process and handled application deployments.

Insiders Lviv, Ukraine
Fullstack developer February 2025 - April 2025
• Developed customer-facing and administrative parts of a marketplace platform for the Italian market, and
contributed to its transition to a mobile application.

• Communicated directly with clients, gathering requirements and providing project updates.

Freelancehunt March 2024 - January 2025
Freelance Developer
• Independently delivered end-to-end web, mobile, and desktop applications, including data-processing and
automation tools, managing the full cycle from requirements to deployment.

Languages
English - B1 Ukrainian - С2 Russian - C2

Education
Kharkiv National University of Radio Electronics Bachelor's degree
Computer Engineering September 2021 - July 2025