Senior Frontend Engineer - AI

LumApps
Louisiana, Paris, Sophia Antipolis
Workplace: HybridFull timeFunction: Software EngineeringExperience: 6+ yearsSkills: ["Technical leadership","Cross-team collaboration","Mentorship","Technical communication","Security mindset"]

Build AI-powered employee experiences for conversational agents across end-to-end chat, agent studio, and interoperability features. Own architectural decisions and mentor engineers while planning and delivering cross-team projects. Work primarily on Python microservices (clean architecture) with a React/TypeScript frontend, ensuring performance, observability, security, and high-quality testing across backend and UI. Influence how tens of thousands of employees use AI at work.

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LumApps
LumApps
3 months ago

Senior Frontend Engineer - AI

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Closed

Job Summary

Build AI-powered employee experiences for conversational agents across end-to-end chat, agent studio, and interoperability features. Own architectural decisions and mentor engineers while planning and delivering cross-team projects. Work primarily on Python microservices (clean architecture) with a React/TypeScript frontend, ensuring performance, observability, security, and high-quality testing across backend and UI. Influence how tens of thousands of employees use AI at work.
Location: Louisiana, Paris, Sophia Antipolis
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Define and own the technical vision for the AI Agents tribe across the stack, including major architectural decisions for protocols, streaming patterns, data modeling, service boundaries, and state management.
  • •Scope and implement complex end-to-end solutions from API and data layers through user-facing experiences.
  • •Plan and execute projects spanning multiple teams, translating roadmap goals into technical strategies and owning delivery accountability.
  • •Lead engineering excellence by defining canonical patterns for testing, performance, observability, and security; conduct rigorous code reviews.
  • •Mentor frontend software engineers by providing actionable feedback and sharing knowledge through articles and internal presentations.

Pay and Benefits

Perks:Remote WorkHealth InsuranceParental LeaveMeal VouchersLearning Budget

Key Requirements

  • •6+ years of professional software engineering experience with deep expertise in TypeScript and React (v17+).
  • •Strong API design, service boundary, component design, performance optimization, and maintainability skills in a large monorepo.
  • •Hands-on experience (or strong curiosity) with agent interoperability protocols (MCP, A2A) and agent-to-UI streaming (AG-UI via SSE/WebSockets).
  • •Experience integrating LLM providers such as Google Gemini and Mistral on Vertex AI, using agentic frameworks like Google ADK or Strands Agents.
  • •Proficiency across testing on the stack, including backend testing (pytest equivalents) and frontend testing (Jest, React Testing Library, Storybook, Playwright).
Experience:6+ yearsAI-powered products
Skills:Technical leadershipCross-team collaborationMentorshipTechnical communicationSecurity mindset
Languages:English
Tech Stack:TypeScriptReactPythonClean ArchitectureAG-UIServer-Sent EventsSSEWebSocketsMCPModel Context ProtocolA2AAgent-to-AgentRAGGoogle GeminiMistralVertex AIGoogle ADKStrands AgentsJestReact Testing Library

Company Brief

LumApps
Provides a mobile-first employee communication and engagement platform connecting deskless and frontline workers with company news, shift management, workflows, and collaboration tools to improve internal communication and operational efficiency.
Industry: HR Tech
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Headquarters: Zurich, Switzerland
Founded: 2012
Website