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We support enterprises, product houses, and startups with custom software solutions development and IT consulting.
Senior Full Stack Developer – JavaScript, AI
Location
Poland
Posted
128 days ago
Salary
0
Seniority
Senior
Job Description
Senior Full Stack Developer – JavaScript, AI
Sigma Software Group
• Design, implement, and debug software modules, components, and complete systems of small to medium complexity • Develop unit, integration, and automated end-to-end tests • Perform thorough self-testing of code, covering key scenarios and edge cases before marking tasks as complete • Follow best engineering practices aligned with company SDLC and guidelines • Mentor junior specialists, providing guidance and conducting peer reviews to ensure quality delivery • Participate in requirements clarification sessions, proactively raising questions and ensuring readiness for implementation • Conduct peer reviews with middle and senior specialists, actively requesting feedback • Contribute to estimation and planning sessions • Act as feature leader when applicable, overseeing delivery from requirements gathering to defect resolution • Prepare technical and user documentation • Track task progress against estimates and schedules, proactively flagging risks • Participate in project and team meetings, providing relevant updates • Support build and deployment automation where applicable • Continuously develop skills and qualifications, aiming for advancement to Senior role • Attend training courses, seminars, and conferences • Join customer meetings, both virtual and in-person
Job Requirements
- 5+ years of experience with TypeScript and JavaScript
- 5+ years of experience with Node.js; experience with NestJS
- Experience with AI tools: Cursor, Claude Code
- Databases: MySQL (Relational), Redis (Document-based)
- Optional Front-end: React JS, TypeScript, JavaScript
- General understanding of CI/CD practices
- Experience with Azure and/or AWS
- English: Upper-Intermediate level
- Process automation experience (WILL BE A PLUS)
- Business process modeling skills (WILL BE A PLUS)
- ERP systems experience (WILL BE A PLUS)
- Familiarity with Scrum frameworks (WILL BE A PLUS)
Benefits
- Continuous learning opportunities
- Challenging projects
- Supportive environment
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