Senior Software Engineer - Full Stack

⚠️Please apply here https://korint.notion.site/Senior-Software-Engineer-Full-Stack-289bab4b900e80eeae09ecc32b53dd6d no direct application on WTTJ will be taken into account.

🔥 We strongly encourage you to apply even if you do not meet all the specific criteria. We understand that not everyone will meet 100% of the requirements and we would still love to hear from you!

🤖 AI‑first Engineering

• Default is “no manual code.” We expect engineers to use AI to plan, generate, refactor, test, and document.

• High accountability. If AI wrote it, you still own it. You must be able to explain decisions and trade‑offs in your PRs.

• Trial-and-error culture. We run experiments, learn fast, keep what works, and delete what does not.

• Clean codebase as a force multiplier. We invest in clarity, boundaries, and tests because AI leverage depends on it.

• We are still iterating to create the best internal DevX: a CLI to spin up VPS with Claude in SSH? Local git worktrees running in parallel our infra? Come figure it out with us.

🧑‍🌾 What you’ll do as a Senior Software Engineer at Korint

• Ship end-to-end features across our React front-end and NestJS back-end: design, implementation, tests, observability, and rollout.

• Own complex domains where correctness matters (business rules, pricing, billing, workflows, edge cases).

• Move fast without breaking trust: improve reliability, performance, and operability as we scale usage and complexity.

• Raise the bar on engineering practices: testing strategy, design system consistency, refactoring, and pragmatic architecture.

🛠️ Tech stack and Tools

• Frontend: React (TS), Shadcn, Tailwind, Playwright

• Backend: NestJS (TS), Event Sourcing in a monolith/microservices mix
  • Databases: Postgres, Redis

  • AI: AWS Bedrock + Basalt

  • Direction: Agents, MCP, and conversational experiences becoming core product surfaces

• Infrastructure: AWS, Terraform, Docker

• Dev tools: Claude Code subscription, Trunk, Dash0, BetterStack, Posthog

• General: GitHub, Linear, Notion, Slack

👌 What you can expect at Korint

• Industry-competitive compensation

• BSPCE will be significant as a way to reward joining Korint at an early stage

• Nice office in Paris 9e (62bis rue Jean-Baptiste Pigalle 75009)

• 1 day / week remote (up to 2 for non-recurrent personal needs)

• 5+2 weeks of holidays

• Fully-paid parental leave for all new parents