Lead Platform UI Engineer, Qdrant

• 5+ years of experience in frontend development, with substantial experience owning or co-owning a production React application
• Deep expertise in React, JavaScript/TypeScript, HTML5, and CSS3, including component composition, hooks, and modern patterns
• Solid understanding of web platform fundamentals: JavaScript, DOM, REST APIs, HTTP/HTTP2, caching, browser performance
• Experience with backend technologies (ideally Python or Node.js) and single-page applications (or hybrid architectures)
• Proven track record designing or contributing to frontend architectures, shared component libraries, or design systems
• Strong familiarity with the frontend ecosystem: testing, linting, bundling, error tracking, performance profiling, CI/CD pipelines
• Comfortable debugging frontend–backend interactions, API contracts, and performance issues in production
• Excellent communication skills and ability to collaborate with engineers, product managers, and designers
• Experience providing technical leadership or mentoring to other engineers, even if not in a formal manager role

Desirable

• As we grow, we are looking for a Lead Platform UI Engineer to take ownership of our frontend platform and UI architecture
• In this role, you will drive the design and evolution of our shared UI foundations (design system, reusable components, patterns, tooling) across Qdrant Cloud, and work side-by-side with our backend team to build a robust, scalable developer and customer experience
• As a Lead Platform UI Engineer with a strong frontend focus and full-stack mindset, you will own the front-of-house experience of Qdrant Cloud as well as the UI platform used by multiple product teams
• Design and own our frontend architecture for Qdrant Cloud, focusing on modularity, scalability, and performance
• Build and maintain a shared component library / design system in React + TypeScript to be reused across teams and products
• Establish standards for state management, routing, API integration, error handling, and observability in the frontend
• Implement complex, high-impact features in React (with modern tooling such as TanStack, OpenAPI, TypeScript, etc.)
• Ship well-structured, testable modules and improve the overall DX (developer experience) of our frontend stack
• Continuously profile and tune frontend performance, bundle size, and runtime behavior
• Cross-functional collaboration & backend integration
• Work closely with backend engineers to shape and optimize APIs, contracts, and data flows for UI needs
• Contribute to Python backend services when necessary to unlock or improve frontend functionality
• Collaborate with Product and Design to turn requirements and UX flows into robust, maintainable implementations
• Technical leadership & mentorship
• Act as the go-to person for frontend and UI platform topics across teams
• Mentor other frontend developers, review critical pull requests, and help establish and enforce coding standards and best practices
• Drive technical decision-making around frontend architecture, libraries, and tooling
• Infrastructure, quality & reliability
• Own key parts of the frontend delivery pipeline: CI/CD, linting, testing, quality gates, error tracking, performance monitoring
• Help define and maintain quality metrics (e.g. core web vitals, error budgets, coverage, build times)
• Ensure our UI stack is secure, observable, and resilient by default