We are looking for a Senior Frontend Developer to join our group, where we build scalable, high-performance systems that manage complex network infrastructures at massive scale.
In this role, you will take end-to-end ownership of a core domain within our application - an area defined by complex user workflows, intricate application logic, and high-scale data interactions. You will be responsible for shaping its technical direction, ensuring architectural soundness, and building the foundation that enables the domain to evolve alongside a broad and ambitious roadmap.
This is a high-impact position that requires strong technical judgment, long-term thinking, and a commitment to engineering excellence in a fast-paced, collaborative environment.
Responsibilities
Design and implement complex UI workflows with advanced client-side logic.
Architect scalable frontend solutions to support high-volume data and real-time interactions.
Build and maintain domain-specific infrastructure, abstractions, and reusable components.
Lead major technical decisions and guide implementation strategies.
Integrate real-time data streams into responsive, reliable interfaces.
Develop advanced visualization components (e.g., graph-based UIs).
Write comprehensive unit and E2E tests to ensure stability and maintainability.
Optimize performance, accessibility, and overall user experience.
Collaborate closely with backend engineers, product managers, and UX designers.
Requirements: 10+ years of experience building modern, production-grade frontend applications.
5+ years of hands-on experience building large-scale applications with React in production.
Deep expertise in JavaScript and TypeScript, including async patterns, event loop, memory management, and advanced type modeling.
Strong understanding of React architecture and modern patterns (hooks, context, suspense, concurrent features, composition patterns).
Proven experience designing and implementing scalable frontend architectures.
Experience managing complex client-side state (Redux, Zustand, or similar).
Experience building complex, dynamic UIs with intricate workflows and advanced interaction patterns.
Hands-on experience integrating real-time data streams (WebSockets / SSE).
Strong knowledge of performance optimization techniques (code splitting, memoization, virtualization, lazy loading).
Experience writing comprehensive unit and E2E tests (Jest, Playwright or similar).
Strong CSS/SCSS knowledge, including layout systems and responsive design.
Experience working in cross-functional Agile teams with strong communication skills.
Nice to Have
Experience building graph-based or visualization-heavy interfaces (e.g., React Flow, D3, Cytoscape).
Experience building or contributing to shared component libraries or design systems.
Experience working in distributed or cloud-native environments.
Prior ownership of a technical domain or subsystem.
Experience with monorepos (Nx / Turborepo).
Familiarity with containerized development environments (Docker/Kubernetes).
Education
BSc in Computer Science, Software Engineering, or a related field - or equivalent hands-on experience.
This position is open to all candidates.