Senior Backend Engineer
<div class="show-more-less-html__markup show-more-less-html__markup--clamp-after-5 relative overflow-hidden"> We're working with a leading circular-economy company that operates Germany's largest reusable-packaging network, with a deposit-return system integrated across over 17,000 locations. They are building a cloud-native, event-driven TypeScript platform to power operational logistics for partners, point-of-sale, returns, billing, and fulfillment at a national scale, with plans for international expansion. This is an opportunity to join a pioneering company that is making a significant sustainable impact.The Role<br/><br/><ul><li>Design, build, and own core platform services including partner management, point-of-sale, billing, returns, fulfillment, and contract management</li><li>Build event-driven, async-heavy integrations between services and external systems, including outbox patterns, queues, retries, and dead-letter handling treatments</li><li>Drive international expansion initiatives for the platform</li><li>Collaborate with technical leads on architectural decisions, data modeling, and incremental extraction of capabilities into the new platform</li><li>Set high engineering standards for testing, observability, and operational readiness from the outsetWhat You'll Need</li><li>7-10 years of backend engineering experience with deep production expertise in Node.js, TypeScript, and NestJS</li><li>Experience with distributed, async/queue-heavy system design and implementation</li><li>Solid relational data modeling and SQL skills (MySQL, PostgreSQL preferred)</li><li>Ability to take end-to-end ownership of problems: design, build, test, ship, and operate</li><li>Experience working with legacy PHP codebases</li><li>Comfortable integrating AI coding agents into your workflow, from prompting to reviewing and integrating agent outputWhat's On Offer</li><li>The opportunity to make a significant impact at a company combining economic growth with sustainable practices</li><li>Flexible working models, including flexible hours and remote work options (2 days/week in office)</li><li>Significant room for professional development and ownership of your work</li><li>A dynamic, growth-oriented environment in a scale-up phaseApply via Haystack today!<br/><br/></li></ul> </div>