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Frontend Engineer | React

Technologie
ConnectHum
Paris, FranceIl y a 1 moisJusqu'au 12/06/2026
Temps pleinHybride

Description du poste

We’re hiring a Frontend Engineer (TypeScript | React) for a fast-growing AI infrastructure startup building the safety and control layer for large-scale AI systems.

The Company Behind the Role:

AI-native product company operating in the AI safety & infrastructure space

Backed by international investors

Processing large-scale AI traffic across enterprise environments

Training and fine-tuning proprietary models for performance & reliability

Small, highly technical team shipping fast The company builds the control and evaluation layer for AI systems - helping organizations define, test, and enforce how AI behaves in real-world environments.

Your Impact

Own and ship end-to-end product features across the frontend and full stack

Design intuitive, high-quality UX that makes complex AI workflows understandable

Build seamless product flows - from onboarding to advanced analysis

Collaborate closely with founders, product, design, ML, and research

Translate cutting-edge AI capabilities into reliable user-facing tools

Drive the development lifecycle and influence technical direction and product strategy

This is a hands-on role where product, AI, and engineering meet.

Tech Environment (High-Level):

TypeScript, React, Next.js

Tailwind-based design systems

LLM integrations (OpenAI API, function calling, context orchestration)

Data visualization & analysis interfaces

Full-stack product architecture

Production deployment & observability

(Deep technical stack shared during interviews)

Your Superpower

Strong experience with TypeScript, React, Next.js

Experience building product features end-to-end

Comfort working with LLM APIs and AI product workflows

Ability to write non-trivial SQL and reason about data

Strong UX sensibility - you care about usability, performance, and polish

Ownership mindset and strong communication

Bonus Points If

Experience building AI product interfaces

Experience with evaluation dashboards or analytics tooling

Experience in startups or fast-shipping environments

Interest in AI safety and AI infrastructure

Why Join

Competitive compensation + equity

Hybrid setup in Europe + relocation support

Comprehensive health coverage

Top-tier hardware & tools

Team off-sites

Budget for learning & AI tooling

Keywords
TypeScriptReactNext.jsTailwind CSSLLM integrationsOpenAI APISQLData visualizationFull-stack developmentProduct designUX designAI infrastructureObservabilityCommunicationProblem solvingFrontend EngineerTailwindLLMFunction callingContext orchestrationFull-stackUXStartupAI safetyEvaluation dashboardsAnalyticsProduct strategy

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