Senior Fullstack Engineer (TypeScript)
Cryptonext Security · Paris, Île-de-France
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- Company
- Cryptonext Security
- Location
- Paris, Île-de-France
- Employment type
- Full-time
- Posted
- August 10, 2026
About this job
On a daily basis, you will • 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, and give QA what they need to automate the rest. • Review code. • Use AI coding tools as leverage under your own judgement, staying accountable for what lands in the repo. • Propose upgrades and refactorings, and explain the trade-offs you accepted. How we work A team of six engineers, within our 15-person R&D department.…
This is a short summary.
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