Backend engineer for educational projects

At simpleclub, we’re on a mission to shape the future of learning for millions of students. As part of this mission, we’re undertaking an ambitious and rewarding project: migrating our custom CMS (built on Firestore and trigger-based pipelines) to a modern, API-first headless CMS. We’re looking for a Senior Backend Engineer to join our team focused on training material and learning experience, further developing a core domain responsible for delivering and managing all our app content. We’ve got tricky and impactful projects lined up: you’ll be laying the foundation for future-proof, AI ready API-driven content delivery.

• Own backend features for AI-powered educator tools: architecture, implementation, deployment, observability. The whole lifecycle is yours.
• Lead technical designs and ADRs for new and refactoring projects, ensuring stable, secure and fast time to customer value
• Integrate further, experiment with and continually improve how we work with AI (create and manage skills, loops and context files), in the context of the above projects.
• Use agentic coding tools to refine, plan, first draft and monitor as part of your daily workflow.
• Ship features with Flutter engineers, PM, and designer. Short cycles, tight feedback loops.

• 7+ years of backend development on production systems. You've owned services, debugged incidents at scale, mentored engineers, and made architecture decisions you had to live with.
• Experience in product trios or similar setups where engineers shape the product, not just build what's specced.
• You use AI coding tools daily. Show us your workflow, skills, context management and agent orchestration, and how you leverage them responsibly.
• Strong experience with NoSQL (Firestore) and relational databases (PostgreSQL/Spanner) especially schema migration and transformation tasks.
• Understanding of API design, caching, and high-performance content delivery.
• Clear, async-first communication. You write well, share context without being asked, and document decisions. We're a remote-first, multinational team. English is the working language.
• Comfortable with asynchronous, event-driven systems (e.g., via Pub/Sub or webhooks).

• Team culture: we support and give feedback to each other. We’ll ensure you’re onboarded properly and have everything you need.
• High autonomy: You’ll be trusted to own your technical solutions while being supported by an experienced engineering lead.
• Remote-first culture: We’re async-friendly, collaborative, and focused on deep work without constant meetings.
• Unlimited paid holidays
• Work from anywhere
• Team events
• A great culture
• Perk Budget
• Join a purposeful mission
• Your salary is reviewed at least once a year.
• The salary band for this role in Germany is: 70.000 - 94.600 EUR annually gross. If you live outside of Germany, we will adapt to your local market.