We are seeking a Senior Front-End Developer to join the core team building our next-generation AI Engine and Unified Chat Assistant. You will architect the UI for complex AI workflows, including multi-tenant agent management, pipelines, and evaluation services. We operate on a forward-thinking model where you will leverage an AI-first, spec-driven development approach to own features end-to-end.
What Youll Do:
Architect and Build: Develop scalable user interfaces for the AI Engine, Unified Chat Assistant, and Evaluation Service using modern web architectures.
AI-First Development: Drive our spec-driven workflow by heavily utilizing AI agents (Cursor, Claude Code) to handle code generation, so you can focus on architecture, planning, and validation.
End-to-End Ownership: Embrace a multi-disciplinary approach by owning the entire feature lifecycle from frontend implementation to backend integration and QA automation.
Global Collaboration: Partner closely with Product, UX, and backend teams (including our Paris office) to ensure seamless API and microservice integrations.
Quality Assurance: Establish and maintain high-quality standards through comprehensive testing strategies, including unit and E2E testing.
Requirements: You'll do it using:
5+ years of proven experience architecting and delivering complex, scalable front-end ecosystems from the ground up.
Expert proficiency in React and TypeScript.
Deep understanding of modern state management (e.g., TanStack Query, Zustand) and UI performance optimization.
Hands-on experience leveraging AI-driven development ecosystems (Cursor, Claude Code, GitHub Copilot) to optimize engineering workflows.
Strong familiarity with applied AI concepts (GenAI, LLMs, AI Agents, Evaluation Metrics, MCP).
Advantage:
Experience with E2E testing frameworks (strong preference for Playwright).
Practical experience building UI for LLMs, including handling streaming responses, chat interfaces, and AI SDKs.
Full-stack capabilities (Python/Node.js microservices) and a willingness to work across the stack.
Familiarity with containerized environments and CI/CD (Docker, Kubernetes, Jenkins).
Youll Excel By:
Demonstrating extreme ownership and thriving in an autonomous, high-velocity environment.
Embracing new workflows and continuously pushing the boundaries of what AI coding assistants can achieve.
Solving complex technical challenges with clean, analytical, and maintainable solutions.
Maintaining a user-centric mindset when transforming advanced AI capabilities into intuitive experiences.
This position is open to all candidates.