Senior Fullstack Engineer: TypeScript & AI-Driven Security

CryptoNext Security SAS; Paris; Hybride; EUR 90 000 - 110 000; Plein temps

Avantages offerts par ce poste

Hybrid work model

Office in Paris

Focus on post-quantum cryptography

Résumé du poste

CryptoNext Security SAS is looking for a versatile software engineer to own features across the stack in TypeScript, Node.js, PostgreSQL, and React. You will work in a small, fast-moving team in Paris three days a week, with the rest remote, building secure APIs, interfaces, and data models.

You will ship code with AI-assisted tools, design OpenAPI specs, review and test repeatedly, and collaborate with Product and QA to deliver robust, scalable solutions.

Qualifications

• Experience delivering features end to end in a TypeScript stack.
• Ability to design and consume HTTP APIs with OpenAPI specs.
• Strong database modeling, migrations, and query optimization.

Responsabilités

• Own features end to end in TypeScript: backend and frontend.
• Design HTTP APIs consumed through typed RPC clients with OpenAPI specs.
• Model and query PostgreSQL: schema, migrations, indexing.
• Build interfaces with Vite, TanStack, Tailwind and shadcn/ui.
• Collaborate with Product and QA teams.
• Write unit and integration tests to automate quality.

Connaissances

TypeScript

Node.js

PostgreSQL

React

Outils

Hono

TanStack

Tailwind

Vite

Description du poste

CryptoNext Security SAS is looking for a versatile software engineer to own features across the stack in TypeScript, Node.js, PostgreSQL, and React. You will work in a small, fast-moving team in Paris three days a week, with the rest remote, building secure APIs, interfaces, and data models.

You will ship code with AI-assisted tools, design OpenAPI specs, review and test repeatedly, and collaborate with Product and QA to deliver robust, scalable solutions.