Sr. Backend Software Engineer (Python) (m/w/x)

About the role

About Grover

Founded in 2015, Grover enables consumers and businesses across Europe to subscribe to tech devices and comprehensive technology solutions - from individual smartphones, laptops, and wearables to full corporate device setups. The company offers access to over 1,000 unique tech items on flexible and financially convenient terms. A pioneer of the circular economy, Grover refurbishes and recirculates devices to help eliminate e-waste.

To continue this incredible adventure, we are currently looking for a Senior Software Engineer (Risk) to join our talented Risk Engineering team at our Berlin HQ (40 hours full-time, onsite 3 days per week (Tues-Thurs).

Risk Engineering builds the systems that decide which subscription orders Grover approves, declines, reviews or verifies, in real time, across four markets and for both consumers and businesses. As a Senior Software Engineer, you report to the Engineering Manager, Risk Engineering, and join a small, senior team that owns its services end to end. You work closely with risk analysts, data scientists, and product to grow approval rate while keeping fraud and defaults in check.

🎯 What you will contribute:

- Our risk decisioning platform: the rule engine, experiments and decision APIs (FastAPI, GraphQL federation) that every Grover order passes through.

- New risk products, starting with dynamic pricing and counter offers, from design to production.

- Integrations with credit bureaus and identity, fraud and AML providers, built to stay reliable when vendors are not.

- Event-driven flows on Kafka for decisions, manual review, ID verification and bank-account checks, correct under retries, duplicates and race conditions.

- Tools for our risk analysts: the manual review experience and our LLM-powered risk assistant on AWS Bedrock.

- Reliability and observability of your services: Datadog monitors, on-call, runbooks and removing legacy dependencies.

🤝 What you bring:

- 5+ years of backend engineering, with Python in production as your main language, with comfort working 90% on the backend and 10% on the frontend.

- Hands-on experience with event-driven systems (Kafka or similar) and PostgreSQL.

- Experience designing REST and/or GraphQL APIs and integrating third-party APIs.

- You have owned services in production: on-call, debugging across services, monitoring.

- You are comfortable with AWS, Docker and Kubernetes, and can work with Terraform.

- You like working with non-engineers, explain trade-offs simply and stay calm when priorities shift.

- Bonus: fintech, payments, lending, fraud or credit-risk experience; rule engines or ML in production; LLM tooling; Rust, Rails or Vue; German.

🚀 The Grover Way - How We Drive Success:

- Own It: We take ownership seriously and define what success looks like. We drive shared ownership and don't wait - we drive. We keep one another accountable and take responsibility when issues arise.