Frontend Developer

Do you want to shape the future?

As a Senior Frontend Developer, you will play a key role in shaping the user experience of our large-scale enterprise video management and situational awareness system. You will work on complex UI challenges, drive modern frontend best practices, and collaborate closely with cross-functional teams to deliver high-quality software.

Your Responsibilities:

• Design and develop new UI flows to enhance user experience and functionality in our enterprise system.


• Contribute to our UI components library, ensuring consistency, scalability, and reusability across the application.


• Migrate legacy components to modern web standards, improving performance, maintainability, and accessibility.


• Tackle real-time challenges, such as rendering dynamic maps with thousands of live features, integrating live CCTV streaming, and managing complex alarm notifications.


• Write robust tests and documentation to ensure reliability, maintainability, and ease of onboarding for other developers.


• Work closely with backend teams to define API contracts, optimize data flows, and integrate services efficiently.


• Collaborate with product managers (PMs) to refine requirements, provide technical insights, and influence the product roadmap.


• Have a real impact on the product shape, contributing ideas, identifying areas for improvement, and driving innovation in UI/UX.

Your assets:

• 5+ years of documented professional experience in frontend development, working on large-scale applications.


• Proficiency in JavaScript and TypeScript, with the ability to write clean, maintainable, and efficient code.


• Deep understanding of Web APIs, browser mechanics, and web standards/protocols (e.g., HTTP, WebSockets).


• Strong experience with a modern frontend framework and state management solution in a large-scale project (we use Angular, NgRx, RxJS).


• Hands-on experience with legacy web technologies, such as jQuery and AngularJS, with the ability to migrate and modernize existing codebases.


• Expertise in testing complex UI flows, including unit, integration, and end-to-end testing strategies.


• Great communication skills, with the ability to effectively collaborate in both technical and non-technical environments.


• English min. B2, Polish min. C2.

Nice if you also have:

• Understanding of media streaming technologies (e.g., HLS, WebRTC) and their integration into web applications.


• Experience with GIS (Geographic Information Systems), including mapping libraries and spatial data visualization.


• Knowledge of UI design systems, component libraries, and best practices for maintainable design.


• Familiarity with Docker and containerized frontend development environments.

What do we offer?

• International projects.


• Individual development path and close-knit team.


• Friendly and casual atmosphere of work (no open space, no dress code).


• Permanent contract.


• Hybrid model of work; in some cases fully remote might be considered.


• Private healthcare (Luxmed) & Multisport card - co-financed by Teleste.


• Flexible working hours (start time between 7:00 a.m. and 10:00 a.m.).