Staff Solution Architect, Finance Systems

Job DescriptionDo you want to be the architect who can look at a payment moving through half a dozen systems and know exactly how it should work? At SIXT, every payment we take, worldwide, has to clear correctly: through our own systems, several payment providers, and on into invoicing, dunning, and the ledger behind it. As we take on new payment methods and bigger migrations, we need a senior architect who can hold that whole picture in view. If you've built payment or financial-transaction platforms before, we'd love to meet you at our Pullach headquarters, near Munich. Apply now! YOUR ROLE AT SIXT You share architectural ownership of SIXT's payment platform, not carry it alone. It's grown fast this past year alone: a payment method with a settlement lifecycle stretching over weeks and a mobile-wallet integration deep inside our PCI-secured zoneYou report directly to our Division Engineering Manager for Finance, a direct seat at the table on architecture decisions, not a role several layers removed from where they get made, working alongside about 40 engineers in six teams spread across multiple countriesEvery new use case is a cross-channel, cross-system flow: a payment might start at a counter, in the app, or on the web, and your design follows it through refunds, disputes, and reconciliation. You carry that same ownership into our multi-year migrations: the franchise business coming onto the platform, a decade-old legacy core being retired, and invoices that now split more ways than beforeYou use AI as a genuine lever, not a checkbox, leaning on the in-house agentic toolkit we've built for payment investigations and design reviews to stress-test integration decisions before they get expensive to unwindYou stay hands-on where it matters: writing RFCs and reference implementations, prototyping to de-risk a design, and reviewing the load-bearing code, on a stack of Java, Spring Boot, Kafka, PostgreSQL, Temporal, AWS, and KubernetesYou raise the design bar across the platform, pairing with staff engineers and engineering managers on their toughest calls, and leaving each of them more confident to own the next big one themselvesYOUR SKILLS MATTER Experience You have several years designing and owning architecture for payment or financial-transaction systems end-to-end, ideally having mentored other engineers into that kind of ownership along the wayPayments Fluency You understand payment flows (authorization, capture, refund, chargebacks, reconciliation), know your way around the regulatory frameworks behind them (PCI-DSS, PSD2, and the like), and design comfortably across both modern and legacy systemsEngineering Depth You still build: strong on the JVM, comfortable with event-driven designs where money has to move exactly once, and fluent in the habits that go with them: idempotency, retries, observabilitySystems Judgment You default to designing for the whole flow rather than the piece directly in front of you, and you're comfortable being the one who makes the call when two systems' constraints pull in different directionsAI Fluency You reach for AI tools as a genuine thinking partner in your day-to-day design work, and you know exactly where you still need to verify things yourselfStakeholder Leadership You drive architectural alignment across engineering teams through influence and technical credibility, not formal authority, and communicate trade-offs so both engineers and leadership can act on themWHAT WE OFFER Extra benefits Enjoy discounts on SIXT rent, share, ride and SIXT+, attractive vehicle leasing offers, and exclusive deals with partners for travel, tech, fashion and moreAI at your fingertips From day one, you'll have access to Claude by Anthropic and SIXTgpt, SIXT's own AI platform, to supercharge your work. We invest in every team member's AI journey: encouraging experimentation, building knowledge, and making sure you're ahead of the curveMobility Boost You will receive a monthly allowance from us as a contribution to your individual mobilityFuture security We contribute to your retirement plan and support you with capital-forming benefits to ensure you are well coveredFeel-good atmosphere Stay active with our modern SIXT gym, various leisure activities like the gaming area or the SIXT choir, and enjoy our high-quality employee restaurantFlexibility Enjoy 30 days of vacation and a hybrid working model with flexible hoursGiving back Take one day each year to volunteer at a charitable organization dedicated to supporting children