Senior Frontend Developer

Senior • Hybrid

Warsaw, Poland

We are looking for an experienced Frontend Developer to join our international team. In this role, you will develop and optimize modern web applications, contribute to technical improvements, and help deliver stable, high-performance solutions in a collaborative Agile environment.

Your responsibilities:

Develop and maintain modern web applications using React.js and TypeScript
Build new features and improve existing functionalities for the platform
Optimize application performance and troubleshoot technical issues
Debug and resolve production incidents to ensure platform stability
Participate in technical discussions, code reviews, and continuous improvement initiatives
Collaborate closely with cross-functional teams, including Product, Design, QA, and mobile development teams
Work with our JavaScript/TypeScript-based UI framework designed for TV-box environments
Ensure delivery of stable, scalable, and high-quality code following best engineering practices

We are looking for you, if you have:

Strong commercial experience in frontend development
Expert-level knowledge of React.js
Expert-level knowledge of TypeScript
Solid understanding of JavaScript fundamentals
Experience with E2E testing frameworks such as Cypress, Playwright, or similar
Experience working with CI/CD pipelines and version control systems
Proven experience in debugging, troubleshooting, and performance optimization
Ability to work independently in a distributed environment
Fluent English (minimum B2+/C1 level)

Nice to have:

Experience developing applications for Smart TV platforms
Experience working on streaming, video, media, or entertainment-related products

We offer:

Participation in interesting and demanding projects.
Flexible working hours.
A great, non-corporate atmosphere.
Possibility to work remote or hybrid (2 days per week from the office).
Opportunities for development and promotion.
Attractive package of benefits.

We reserve the right to contact the selected candidates.

Transition Technologies MS

Transition Technologies MS is a company operating in the software development industry, focusing on enterprise projects and products. The company values flexibility, offering remote or hybrid work models, and emphasizes a non-corporate atmosphere, suggesting a more relaxed and innovative work environment. Transition Technologies MS is committed to stable employment conditions and career development opportunities for its employees. While the company does not require experience in healthcare, it acknowledges the value of familiarity with healthcare systems, indicating a potential focus or interest in this sector. The company is distinguished by its involvement in interesting and challenging projects, and it provides a comprehensive benefits package to its employees.

Check if your resume is ATS-ready before applying →Build an ATS-optimized resume