Business Systems Engineer (f/m/d)

WE'RE LOOKING FOR At thermondo, our mission is to decarbonize every home — technology is our primary lever. We are disrupting a massive industry still running on legacy systems and manual work. We build the intelligent software and automation that gives us a decisive edge, operating at a scale our competitors can't match. You will report directly to the VP of Engineering and work closely with Software and Business Systems Engineers across thermondo's functions. This is a visible role with real impact. IF YOU ENJOY THIS * You own the target-state architecture for our entire CRM and business-systems landscape: Salesforce (Sales, Service, Revenue Cloud, Field Service) and the surrounding stack — billing, telephony, automation/iPaaS, the data layer — and you drive the estate toward it * You advise on build-vs-buy and platform-fit decisions: when something belongs in Salesforce vs. an adjacent tool or a thermondo-built service, weighing maintainability, integration, and total cost of ownership * You shape our CRM data and integration architecture together with Software and Business Engineers — object model, data ownership and governance, event-driven and API-first integration * You set engineering standards for the CRM estate (version control, testing, CI/CD, release discipline) and champion engineering in code over click-configuration * You guide and enable the engineers around you through review, patterns, and teaching — not just delivering your own tickets AND RECOGNISE YOURSELF HERE * Proven Salesforce architecture ownership across multiple clouds: Sales, Service, Revenue Cloud, Field Service — including the data model, security model, and large-org integration * You think beyond Salesforce: you know the CRM field well enough to say when another tool fits better, and you can name it — whether that's a different CRM, CPQ/billing, telephony, CDP, or integration tooling like n8n or Make * Fluent in integration and data architecture: event-driven and API-first design, data ownership and governance, ERP and billing coupling * Code-first: comfortable with SFDX, version control, and CI/CD for the CRM stack — not click-only * You think in total cost of ownership and long-term health of the estate, not just whether something can be built * You use AI tooling as a default part of how you work * Nice to have: Salesforce CTA, Application Architect, or System Architect credentials; field-service/dispatch or high-ticket B2C domain experience WHAT WE HAVE TO OFFER * In this role, you can expect an attractive compensation package starting from €(Ammount) * Join a team of Product Managers, Software Engineers, Designers, Data and Salesforce people who are excellent in their craft and are happy to share their knowledge and help you grow alongside them * Our team is using the latest frameworks and is working with a modern tech stack to build powerful products for our customers, craftspeople, and internal teams * Boost your skills with a dedicated annual learning budget to spend on conferences, courses or books  * Choose your own AI coding companion – we provide you with the license for the AI model or assistant of your choice  * We offer a challenge with purpose - the better our tech, the more people will live climate-neutral and the better the world becomes for future generations * We offer a fantastic culture in the tech team and beyond * Modern office in the heart of Berlin * Work from home - up to 3 days a week * You receive an Urban Sports Club membership & nilo.health membership * You can lease a job bike or bring your dog one day/week * Corporate Benefits at more than 100 partners * 20% employer contribution to your pension and disability insurance ABOUT US Every application is welcome here - regardless of gender, nationality, ethnic and social background, religion, ideology, disability, age, sexual orientation or identity. We are convinced that everyone is valuable and deserves a fair chance. Software has always been part of thermondo’s DNA. We have been the first to digitize trade a decade ago. Today, our proprietary software enables 800 thermondinos to scale the heating transition in Germany. But we want more. We want to enable fully digitized and smooth customer journey ensuring that all processes are coming together: commercial funnel, procurement, product, supply chain, project management, finance, dispatch, HR planning as well as customer facing offerings for maintenance and home energy management.  Our product & tech teams in Xberg - the heart of Berlin - are a highly diverse and multicultural bunch. They make sure that we can make a difference and scale the energy transition in Germany and work closely together with all departments.    Join our product & tech teams and pave the way for climate neutral living. YOUR APPLICATION PROCESS * An initial interview with your Talent Acquisition partner, Alex  * If we are both on the positive side, you will talk to our VP of Engineering Pedro * After this stage, you will undergo some technical assessments * Then, you will have the opportunity to meet with your to-be teammates.  * Finally, Become a thermondino! *The exact salary level will be defined during the interview process, based on your experience, qualifications, and the level of responsibility required for this role HERE WE GO Is this exactly the challenge you are looking for? Then don't wait any longer and apply to us. We look forward to getting to know you!

In the Global Bank tribe, we're building the infrastructure to provide merchants with a digital business account that empowers them to manage their banking needs. Our goal is to become the most popular banking partner for small merchants globally with an effortless, simple, and affordable experience. You'll help us transition from fragmented regional setups to a unified global infrastructure, directly enabling millions of merchants worldwide to access seamless banking tailored to their needs. As a Senior Backend Engineer on the Global Accounts team, you'll own critical pieces of our bank account platform. You'll help us design and build a fully distributed, event-driven system designed to scale across regions with resilience and compliance built in. You'll work primarily in Kotlin, with opportunities in Elixir and Golang. We practice Extreme Programming: small iterations, daily deliveries, and a focus on technical design quality and deep problem understanding. Our tech stack includes Kotlin, Golang, Elixir, Java, AWS, Kafka, PostgreSQL, and Kubernetes, supported by observability tools like Prometheus, Grafana, and Honeycomb. We also use AI-assisted development tools including Cursor and GitHub Copilot. What You'll Do * Build critical infrastructure from scratch: Contribute to the design and implementation of a newly architected global accounts platform. You'll help migrate existing systems to a modern, event-driven, decoupled architecture that enables scalability and resilience across regions. * Master event-driven architecture: You'll be working extensively with Kafka to build a truly decoupled, resilient system. Event-driven architecture is essential to our goal of ensuring that failures in one part of the system don't bring down banking operations globally. This isn't just a technical requirement—it's the foundation of building a platform that can handle the complexities of multi-region banking. * Solve complex compliance challenges: Design flexible systems that handle varying regulatory and verification requirements across different regions and use cases. You'll make compliance requirements maintainable and natural rather than an afterthought. * Enable other teams: Build a self-service platform that empowers internal teams across the organization to contribute to and build on top of. * Work globally: Your work will directly impact EU and LATAM markets, with potential US expansion on the horizon. You'll Be Great for This Role If * Strong technical foundation: Solid backend development experience in Kotlin, with interest in working across multiple languages (Golang, Elixir). You understand system architecture, object-oriented and functional design principles, data modeling, and API design (RESTful and event-driven). * Event-driven architecture expertise: Proven experience with Kafka and event-driven systems. You understand how this enables true decoupling and resilience in distributed systems. * Distributed systems mastery: You've built tested, observable, scalable, robust, and fault-tolerant distributed systems. You have hands-on experience with AWS, Docker, Kubernetes, cloud-native architectures, and relational databases, understanding data consistency and performance considerations. * Ownership and craft: You take full ownership of the software you ship, from design to production readiness. You value clean, maintainable code and continuously refactor to keep designs simple and scalable. * Motivated by the challenge: You're curious and energized by complex problem-solving rather than just shipping features quickly. You thrive in environments with fast iterations and careful design, where understanding the problem deeply is valued over rushing to delivery. You're excited by the opportunity to architect critical systems from scratch and work in a team that practices Extreme Programming with daily deliveries. * Collaborative mindset: You communicate respectfully, share knowledge openly, and actively support your teammates' growth. Why you’ll enjoy working at SumUp * Be part of a company that values diversity and celebrates unique perspectives. * Work with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth. * Be part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world * Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 EUR) * Sabbatical program for tenured SumUppers * Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more * Health & wellness benefits: in-house fitness classes, gym in the office, subsidized Urban Sports Club and available psychotherapy sessions * A lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc. * Enrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success     About SumUp At SumUp, we’re on a mission to empower small businesses around the world with simple, affordable tools to help them start, run, and grow. More than 4 million merchants across 37 markets trust us as their financial partner — and we’re just getting started. We’re a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care. Our core valuesOpens in new window and cultureOpens in new window shape everything we do, fostering inclusion, learning, and belonging. SumUp is proud to be an Equal Employment Opportunity employer, committed to building a safe, respectful, and diverse workplace where everyone can thrive. 👉 Explore more about our culture on our careers site, or follow us on LinkedInOpens in new window and InstagramOpens in new window. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.