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JS Developer – Mid/Senior
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JS Developer – Mid/Senior
Poland
Full Time
5 hours ago
$11,000 - $23,000 PLN
Apply Now
Key skills
Docker
JavaScript
Jest
TypeScript
Git
GitHub
Version Control
Jira
Agile
Scrum
Kanban
Collaboration
About this role
Role Overview
Develop, maintain, and optimize JavaScript libraries
Build new integrations and improve existing ones with other systems and tools
Create and maintain technical documentation
Profile and optimize application performance
Write unit and integration tests
Requirements
Hands-on knowledge and 2+ / 5+ years of experience with JavaScript (we work with ES3–ES5+)
Experience with TypeScript
Ability to use browser profiling tools effectively
Solid understanding of REST APIs
Experience writing unit and E2E tests (Jest)
Familiarity with container environments (Docker)
Knowledge of agile development practices and tools (Scrum, Kanban, Jira, GitHub or other Git-based version control systems)
Basic understanding of web application security (CSRF, XSS)
Good command of English (B2) and Polish (B2)
Tech Stack
Docker
JavaScript
Jest
TypeScript
Benefits
Private healthcare (Luxmed)
Personal growth budget for learning, courses, and industry books
A fully paid 1-month sabbatical after every 5 years with us
Internal referral program with a nice bonus for bringing great people on board
“Sharpen the saw” day — a full day dedicated to personal or group projects outside the sprint
A strong, supportive team culture focused on collaboration and delivering together
Plenty of opportunities to share knowledge and learn from experienced teammates
Apply Now
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