Senior Backend Engineer (all genders)

Das ist der Job

This is not a ticket‑taking role – you'll shape the system, not just implement against it.

Darum lohnt es sich

It's a two‑track hybrid modernisation (brown and greenfield), cloud‑native, event‑driven TypeScript platform that runs real‑world operational logistics: partners, point‑of‑sale, returns, billing, and fulfillment at national scale, expanding internationally.

What you’ll do Design, build and own core platform services: partner management, point‑of‑sale, billing and invoicing, returns, fulfillment, and contract management Build event‑driven, async‑heavy integrations between services and external systems – outbox patterns, queues, retries, dead‑letter handling Help drive our international expansion Partner with the technical lead on architectural decisions, data modelling, and the incremental extraction of capabilities from our existing platform into the new one Set the engineering bar – testing, observability, and operational readiness baked in from day one Our stack Languages: PHP (7.1) (current), TypeScript (Next direction) Frameworks: Shopware 5.3 and NestJS Data: MariaDB, PostgreSQL + Prisma Cloud: Google Cloud Platform – Cloud Run, Pub/Sub, Cloud Tasks AI: Claude (Code, Chat and Cowork) APIs: REST Platform: GCP Existing platform (you’ll learn its domain): PHP / Shopware – the current production system we incrementally extract from WAS DU MITBRINGST 7–10 years of backend engineering, with deep production experience in Node.js, TypeScript and substantial hands‑on NestJS in production plus ability to work with legacy PP2 (PHP) code Strong system design and execution – you’ve designed distributed, async/queue‑heavy systems and shipped them, not just white‑boarded them Solid relational data modelling and SQL (MySQL, PostgreSQL ideally) Comfortable owning a problem end‑to‑end: design, build, test, ship, operate Munich‑based.

Concretely, we’re looking for someone who: has shipped production code with an AI coding agent can describe their workflow – how they spec, prompt, review, and integrate agent output has informed opinions on where agents fail and how they guard against it (review discipline, tests, architectural guardrails) Nice to have Event‑driven / CQRS / outbox experience Google Cloud Platform Migration or legacy‑extraction experience (incrementally replacing an older system) Comfortable reading unfamiliar or legacy codebases WAS WIR BIETEN The opportunity to make an impact at a company that combines economic growth with real, sustainable impact Flexible working models (flexible hours, remote work) Room for development and ownership: you actively shape your area A personal, professional culture and open feedback culture A dynamic, growth‑oriented environment in a scale‑up phase Partnerships with Wellpass, Urban Sports Club, Open Up, and Future Bens Inclusivity statement We want to become more diverse because we believe that we can only achieve our vision through diversity, and that innovation can only emerge through diversity.

We therefore welcome applications from people with international backgrounds, people of all gender identities, all age groups, people of color, and people with disabilities or chronic illness. #J-18808-Ljbffr DEINE MISSION We're building the next-generation backend that powers Germany's largest reusable‑packaging network – a circular‑economy deposit‑return system live across 17,000+ locations.

You will join as a (senior) engineer (all genders) with real ownership: designing, building and owning core services and working directly with our technical lead and peers on architecture.

This is a hybrid role: 2 days/week in our Munich office, rest remote Working with AI coding agents We use AI coding agents (Claude Code) every day as a core part of how we build. We expect you to as well.