Principal Engineer (f/x/m)

• Take ownership of the platform's systems design, including the architecture, data models, contracts, and integration boundaries, and the trade-offs behind them.
• Stay hands-on through the highest-risk parts of the build, and ship code the team learns from.
• Set the design standard: the architectural, security, and verification patterns the team builds to, and the design reviews that uphold them.
• Design for security and scale, building systems that withstand banking-grade load and scrutiny.
• Raise the technical output of the team through direction, design review, and pairing.
• Build AI leverage: agentic workflows with the evals and guardrails needed to ship reliably.
• Represent us technically with customers, including workshops and due diligence with bank architects, CISOs, and risk teams, in German and English.
• Partner with senior management and your manager on strategy and prioritisation.

• A deeply experienced, hands-on technologist, typically with 8+ years building production software, able to own systems design and still ship code others learn from.
• Fluent in German and English, both essential for our engagement with German banks.
• Large-enterprise context: you have delivered systems inside a large corporate or for a vendor supplying one, and understand how enterprise architecture reviews, security assessments, and change control work.
• Excellent systems design skills, covering distributed systems, services, contracts, data, and integrations.
• AI-forward: you already use coding agents and AI-assisted building in your own work or personal projects.
• A track record of raising the engineers around you through influence, design review, and example.
• Senior-management maturity: you translate technical risk into terms the business can act on.
• Credible and calm when bank architects and risk functions question design choices.
• Security-minded: secure-by-design thinking, OAuth/OIDC, and data protection appropriate to banking.
• Rigorous about quality: you design for verifiability and verify rather than assume.
• Regulated-industry experience, with banking or FinTech a major bonus.
• Cloud experience: GCP preferred, with AWS or Azure also welcome, plus familiarity with IaC, containers, and CI/CD.
• Nice to have: Python/FastAPI, React/TypeScript, the GCP stack, privacy-enhancing technology or applied cryptography (MPC especially), multi-tenant SaaS, and the anti-financial-crime domain.

Benefits

• Attractive compensation.
• Flexible hybrid work model (Frankfurt + home office within Germany).
• High ownership and real impact from day one.
• Flat structures that let the team move quickly.
• Collaborative, international team culture.
• Work on high-impact products that help fight financial crime. ‍
• Own the architecture of our core data-sharing platform and build it hands-on.
• We welcome applications from all qualified people, as diversity enriches us. Your perspective matters: regardless of gender, age, origin, religion, sexual orientation, or disability. Applicants with disabilities will be given preference when equally