Senior Full-stack JavaScript Engineer
- Hiring from
- Ukraine
- Work type
- Remote
- Posted
- Sep 26, 2026
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Senior Full-stack JavaScript Engineer
Remote in Ukraine
JavaScript (Fullstack)
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Find me a jobWe are seeking a Senior JavaScript Full-Stack Engineer to design, build, and ship production features end-to-end across our stack (Node.js, React, PostgreSQL/Redis, AWS). You will integrate AI-assisted development tools like GitHub Copilot, Cursor, or Claude Code into your daily workflow to enhance productivity and code quality. This role requires strong technical expertise, problem-solving skills, and the ability to critically review AI-generated code.
Responsibilities
- Design, build, and deliver full-stack features across frontend (React, Next.js), backend (Node.js), and database layers
- Own tasks end-to-end, including implementation, testing, code review, and documentation
- Use AI coding tools daily for implementation, debugging, test generation, and code exploration
- Apply prompt engineering to achieve reliable and accurate AI-generated outputs
- Critically review AI-generated code for correctness, logic, and quality before merging
- Integrate with cloud infrastructure (AWS/Azure/GCP) and third-party services
- Participate in code reviews, architecture discussions, and sprint planning
- Debug and resolve production issues using AI tools to accelerate root-cause analysis
Requirements
- 4+ years of professional experience as a full-stack engineer
- Proficiency in JavaScript/TypeScript, Node.js, and React.js
- Experience with PostgreSQL, Redis, or similar database systems
- Hands-on experience with AWS or other cloud platforms
- Daily production experience with AI coding assistants (GitHub Copilot, Cursor, Claude Code)
- Strong prompt engineering skills and ability to validate AI-generated code
- Excellent problem-solving skills and ability to work efficiently under delivery pressure
- English proficiency at B2+ or higher
Nice to have
- System design expertise and experience with multi-step agentic workflows
- Ability to manage parallel AI agents safely and critically review AI-generated PRs
- Skilled at designing reusable prompts and multi-step agentic flows