⚠️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

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

💎 We are looking for Product-oriented Engineers that thrive in layers of abstraction. We are not building a single SaaS → we are building a meta-SaaS.

✨ How to be successful in this role

• You care about craft and you want to build software you are proud of.

• You have 4+ years of professional experience shipping production software.

• You have shown technical leadership on teams or on complex projects (scope, quality, delivery).

• You are strong with TypeScript and have real experience with Node (NestJS), React and SQL in production.

• You ideally graduated from top engineering schools, like most of the current team

• You have experience building and maintaining design systems, ensuring consistent UI components and adherence to design standards across the application

• You thrive in a startup environment with high autonomy and a bias for action.

• You are comfortable using AI-only (🎯 for end 2026), but you keep ownership, judgment, and rigor.

• You write and maintain high-signal tests (unit, integration, end-to-end) because speed without tests does not scale.

• You contribute to building Korint’s engineering culture as we grow

• You communicate clearly and meet your deadlines

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

1. CTO Interview (75min) This is an opportunity to confirm your deep expertise and ensure alignment on your career goals and our expectations.

2. On-site Interviews (90min) Meet the team and solve a practical problem with your own machine. AI tools are expected. We evaluate your judgment, speed, correctness, and how you validate what AI produces.

3. CEO Interview (45min) This is where we re-ensure alignment with our vision and values.

4. Reference Calls We expect 2 references that we can call to validate that you will fit into our team

5. Offer Congratulations on joining our small & talented team!