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Олександр
Fullstack-розробник
- Considering positions:
- Fullstack-розробник, Front-end програміст, Full-stack програміст, Javascript-програміст, Web-програміст, React розробник
- Age:
- 22 years
- City of residence:
- Kharkiv
- Ready to work:
- Remote
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Oleksandr Leonov
Fullstack developer
[open contact info ](look above in the "contact info" section) [open contact info ](look above in the "contact info" section) Kharkiv, Ukraine
Summary
Fullstack Developer (3+ years) specializing in React and Node.js production applications, from frontend architecture
to backend APIs and deployment. Experienced in modernizing legacy systems and integrating AI coding agents into
the daily development workflow. Works effectively independently or within a team, including occasional team-lead
responsibilities. Additional experience building cross-platform apps with React Native and Electron.
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 April 2025 - Present
• Delivered frontend solutions across CRM, crypto, and internal business products, taking ownership of technical
decisions and collaborating closely with backend and QA teams.
• Led the modernization of a legacy codebase, cutting build times by 5x and significantly improving application
stability and performance.
• 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 September 2024 - March 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 September 2023 - August 2024
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
Fullstack developer
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Summary
Fullstack Developer (3+ years) specializing in React and Node.js production applications, from frontend architecture
to backend APIs and deployment. Experienced in modernizing legacy systems and integrating AI coding agents into
the daily development workflow. Works effectively independently or within a team, including occasional team-lead
responsibilities. Additional experience building cross-platform apps with React Native and Electron.
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 April 2025 - Present
• Delivered frontend solutions across CRM, crypto, and internal business products, taking ownership of technical
decisions and collaborating closely with backend and QA teams.
• Led the modernization of a legacy codebase, cutting build times by 5x and significantly improving application
stability and performance.
• 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 September 2024 - March 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 September 2023 - August 2024
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
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