As a Senior Software Engineer , you will play a key role in shaping and evolving our order management and commerce platform with Fluent Commerce at its core. You will design and build workflows, integrations, and platform extensions that reliably power the journey of millions of customer orders. Working across Fluent Commerce, Java-based services, APIs, and our wider e-commerce ecosystem, you will take ownership of complex features end-to-end, from specification and architecture through to delivery, monitoring, and continuous improvement. Collaborating with Product and Engineering teams, you will combine strong technical judgment with a deep understanding of order management and distributed systems to build solutions that are scalable, resilient, and easy to evolve. Your curiosity for emerging technologies and AI-assisted development will help the team work smarter, ship faster, and continuously improve how we build and operate our commerce platform. This position is permanent and based in Munich . Design, build, and maintain solutions on the Fluent Commerce platform, taking end-to-end ownership from architecture to production release and maintenance Design and evolve Fluent Commerce workflows, rules, events, and orchestration logic supporting order management, fulfilment, and inventory processes Develop custom Fluent Commerce rules using the Rules SDK and Java, keeping business logic modular, testable, and maintainable Build and extend integrations between Fluent Commerce and our wider e-commerce landscape using GraphQL, REST APIs, webhooks, events, and other integration patterns Own the reliability and performance of order-management flows, handling failure scenarios, retries, idempotency, and observability Work closely with Product and Engineering teams to translate business requirements into technical designs, build AI-powered capabilities, and champion engineering quality through automated testing, code reviews, and documentation Strong hands-on experience developing and extending Fluent Commerce, with solid knowledge of its Order Management platform, Workflow Framework, events, rules, and orchestration concepts Practical experience with the Fluent Commerce Rules SDK and Java development (Maven), with experience in Spring Boot and the Fluent Connect SDK being a strong plus Strong background in software architecture and integration design, connecting enterprise and e-commerce systems using GraphQL, REST APIs, webhooks, and asynchronous or event-driven integration patterns Good understanding of core order management concepts including sourcing, fulfilment, inventory, cancellations, returns, and order life cycles Proven fluency with Agentic AI, directing coding agents on well-scoped work to accelerate delivery without compromising quality, security, or maintainability Fluency in English with excellent written and verbal communication skills; German is a plus