Senior Software Engineer | API Enterprise | Full-Stack

DeepL is a global AI product and research company focused on building secure, intelligent solutions to complex business problems. You will join the API Enterprise team at the intersection of DeepL's API platform and Enterprise ecosystem, focusing on enterprise customer adoption: usage insights, cost controls, RBAC, compliance, and data residency capabilities. We are moving from Software-First to Product-First.

Responsibilities

Drive Enterprise API Adoption by owning features that turn enterprise interest into deep, durable adoption (usage insights, cost and consumption controls, governance tooling); Build for Governance & Compliance by designing controls for roles and permissions, projects, data residency, and audit-ability; Guardianship of Quality & Production Reliability by owning services end-to-end including API on-call rotation and implementing contract testing, monitoring, and SLOs; Architect Across the Enterprise Ecosystem by navigating dependencies across different areas and stakeholder teams to ship cohesive, reliable enterprise capabilities

Requirements

Enterprise-First mindset treating enterprise IT and security admins as primary users; strong communicator comfortable owning and implementing product decisions; deep expertise designing scalable backend systems, RESTful APIs, and distributed architectures, primarily in C# / .NET; experience with high-scale distributed systems in production; strong API design fundamentals and system design; hands-on experience with MCP, CLIs, and OAuth; track record of leading projects across multiple teams; ability to align with stakeholders, manage cross-team contracts and dependencies; own services end-to-end (production operations, incident response, and on-call); motivated by pushing reliability toward four nines; write comprehensive tests, learn from incidents, treat mature SLOs as core engineering feature; leverage AI-powered tools like Claude Code, Codex or GitHub Copilot

Nice to have

Frontend development with React/TypeScript; track record of zero-downtime migrations on live systems; experience with metering, quota, or usage-data systems; worked in a compliance environment (SOC 2, ISO 27001, C5, or similar)

Benefits

Diverse and internationally distributed team; open communication and regular feedback; hybrid work and flexible hours; Virtual Shares; regular in-person team events; monthly full-day hacking sessions (Hack Fridays); 30 days of annual leave; access to mental health resources; competitive benefits