Senior Software Engineer - Fluent Commerce (m/f/d)

About the Position

Senior Software Engineer - Fluent Commerce (m/f/d)

Join Westwing as a Senior Software Engineer - Fluent Commerce to shape and evolve our order management and commerce platform.

Responsibilities

• 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, fulfillment, 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

Requirements

• 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, fulfillment, 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

We Offer

• A high-performance culture built on trust, feedback, and collaboration
• An inspiring, international environment that empowers you to think big, take ownership, and grow beyond your comfort zone
• In-Office Culture: 4 office days per week (Mon-Thu) dedicated to fast decision-making, high-impact collaboration, and strong team connections
• Work-from-anywhere opportunities for up to 4 weeks per year
• 30 days of paid holiday to rest, recharge, and come back ready to create
• A beautiful, centrally located, dog-friendly office with inspiring spaces, a sunny terrace, and good food
• Exclusive discounts: 40% off Westwing Collection, 20% off third-party brands, and 20% Family & Friends discount on Westwing Collection, plus special-occasion vouchers
• Wellbeing support through mental health resources, sports memberships, and preventive care
• Sustainable mobility options with discounted public transport and JobRad
• Support for working parents, including on-site daycare and a partnership with multilingual provider Elly & Stoffl
• One annual Social Impact Day to give back to a cause you care about
• Team rituals that celebrate results and togetherness

About the Company

Westwing, Europe’s #1 in Beautiful Living e-commerce, is present in 20+ European countries and achieved a GMV (Gross Merchandise Volume) of EUR 507 million in 2025. As Europe’s premium one-stop destination for Design Lovers, it offers a unique brand experience with a carefully curated assortment of the Westwing Collection and 3rd party design brands. The integrated platform combines Shop, Daily Specials, Stores, the B2B Service (Westwing Business) and the Westwing Design Service. Westwing’s team works together on its shared purpose to “Excite people to create homes that unlock the full beauty of life”. Founded in 2011, Westwing is headquartered in Munich and went public on the Frankfurt Stock Exchange in October 2018.

Diversity is deeply rooted in our culture. Our mission doesn’t stop to inspire only your design choices, it continues to embrace an inclusive lifestyle filled with respect to everyone’s uniqueness, cultural differences, and equal opportunity.