Senior TypeScript Fullstack Engineer - Remote/Hybrid

Limelight Health; Paris; Hybride; EUR 70 000 - 110 000; Plein temps

Résumé du poste

CryptoNext Security in Paris is seeking an experienced software engineer to own features end-to-end across the stack using TypeScript, Node.js, React, and PostgreSQL. You will work with Product and QA, ship code early, and maintain secure, test-driven development while applying AI tools judiciously.

The role is hybrid, with three days in the Paris office and two remotely. You will collaborate across backend and frontend services, build robust APIs, and contribute to a security‑minded culture

Qualifications

• Strong TypeScript across the stack: strict mode, generics, types shared between server and client.
• Node.js backend: API design, auth, error handling, observability.
• Asynchronous processing: queue consumers and background workers, idempotency, retries and failure handling.
• PostgreSQL: schema design, migrations and rollbacks, indexing.
• Strong React: hooks, composition, clear state boundaries, client-side routing and server state caching.
• API contract design: REST, OpenAPI, typed clients, versioning.
• Unit and integration testing, with a defensible position on what belongs at which level.
• Real use of AI-assisted development in a production codebase.

Responsabilités

• Own features end to end in TypeScript: Hono and Node.js on PostgreSQL, React SPA on the front.
• Design HTTP APIs consumed through Hono's typed RPC client, with generated OpenAPI specs.
• Model and query PostgreSQL: schema, migrations, query performance.
• Build interfaces with Vite, TanStack, Tailwind and shadcn/ui.
• Work directly with Product and QA.
• Write the unit and integration tests that back your features.
• Review code and use AI coding tools as leverage under your own judgement.
• Propose upgrades and refactorings, and explain trade-offs.

Connaissances

TypeScript

Node.js

React

PostgreSQL

OpenAPI

Testing

AI tools

Senior mindset

Outils

Hono

TanStack

Vite

Tailwind

Description du poste

CryptoNext Security in Paris is seeking an experienced software engineer to own features end-to-end across the stack using TypeScript, Node.js, React, and PostgreSQL. You will work with Product and QA, ship code early, and maintain secure, test-driven development while applying AI tools judiciously.

The role is hybrid, with three days in the Paris office and two remotely. You will collaborate across backend and frontend services, build robust APIs, and contribute to a security‑minded culture