Senior/Staff Platform Software Engineer in Madrid

We understand that flexibility and trust are essential for our teams. Here are some of the benefits we offer:

• 🏡 Remote Work: Up to 3 days a week!

• Work-life balance: We have flexible entrance and departure time.

• Summer schedule on Fridays: Start early your weekends!

• 🤝 Referral Bonus: €1500 for every talent you refer (after 6 months).

• 🍱 Flexible Remuneration: COBEE platform.

• ⚕️ Private Medical Insurance: Adeslas.

• 📚 Continuous Learning: Access to our internal platform for continuous development.

• 🌴 Vacation: 23 vacation days plus an intensive schedule in July and August.

• Teambuilding: Our afterworks and activities are memorable!

Platform is the integration layer every Nextlane product connects through: the APIs, gateways and integration services that link dealers' management systems (DMS) with car makers (OEMs), partners and our cloud products.

As a Senior or Staff Software Engineer in Platform, you will design, build and run that layer - and help rebuild hundreds of OEM integrations on it, with AI doing much of the work under human review.

Make the platform something every team builds on, not around: stable and secure, one way in, and a new integration in weeks instead of months.This is a senior software engineering role first, with AI on top. You will write, review and ship code, own it in production, and make AI tools work on real, long-lived codebases - not demos.You will work with Platform Product, our architects, Developer Experience, QA, Security and the product teams that use the platform, across several European countries.

• Design, build and run the platform's APIs and integration services, behind one front door: our API gateway.
• Build OEM and partner integrations on our new integration platform - each one a reviewed recipe, not a project of its own - and move existing ones onto it, domain by domain.
• Own what you build in production: monitoring, on-call, fixing what breaks.
• Design versioned contracts for the core entities - customer and vehicle first, then workshop and parts - one shape, whatever the DMS.
• Apply one API policy - versioning, deprecation, error codes - so partners keep working when things change.
• Help build one sign-in and permission model: who may call what, for which dealer.
• Add SLOs, alerts and contract tests to the top APIs; release in stages, with rollback.
• Build security in: no secrets in code, scans in every pipeline, vulnerabilities fixed on time.
• Lead incidents when needed; write the post-mortem and see its actions through.
• Make AI coding assistants and agents (Claude Code or similar) work on our codebases: repository instructions, conventions, architecture maps, tools.
• Grow our AI assembly line for integrations - design, build and test, deploy -with a person approving the contract and the release.
• Bring AI code review and AI-built tests into the pipeline, with our Developer Experience team.
• Work inside a product team when it needs it, pairing on its code, so the AI tools keep working after you move on.
• Keep AI governed and measured: what data goes where, human review of every change; adoption, lead time and change failure rate, reported honestly.
• Keep designs, runbooks and post-mortems open and AI-readable, so anyone can ask what broke last time and what fixed it.
• Review code and designs, coach engineers, write short guides.
• At Staff level: set technical direction beyond the team, with our architects; lead migrations other teams depend on; help design how AI agents use the platform safely - identities, limits, audit.