Senior Backend Engineer (C#/.Net) (m/f/d) Everyone's story matters. Come shape your story with us at Riverty. But where does that take you? To one of our 30 hybrid workspaces – designed for exchanging ideas, learning from others, and shaping the way we work. An international community of over 4,000 people, representing almost 80 nationalities across 11 countries. United by one mission: Combining empathy, advanced technology and data-driven insights to keep people and businesses in flow. With payments made for them. So that they don't have to worry about it. And there's more: We are part of the family-owned Bertelsmann group. Established. Corporate. In a fast-paced industry. We enable flexible payments in various industries, simplifying the financial management of known brands and helping people repay debt to build financial confidence. In short: shaping FinTech. We are looking for a Senior Backend Engineer (C#/.Net) (m/f/d) (unlimited, full-time) Join our team at our location in Berlin – hybrid working conditions available. Our solutions contribute to flexible and customer‑friendly payment alternatives. We offer consumers the opportunity to choose when and how they want to pay, whilst guaranteeing a steady and predictable cashflow for merchants. Our products make us proud, but not content and we have high ambitions for our existing as well as upcoming products. We have a strong commitment to building the future of FinTech — human‑centric and sustainable. With investments to back it up. You will be part of a new and quickly growing product & tech organisation, having the opportunity to shape our new teams as well as build the next revolutionary products. Your key responsibilities Design, develop, test, and deliver robust, maintainable software and APIs. Contribute to architecture and system design through ADRs and reviews. Participate in agile ceremonies to align with cross‑functional teams. Translate business needs into practical, documented technical solutions. Apply best practices in CI/CD, observability, and security. Identify and resolve technical debt to improve system reliability. Mentor peers and foster a collaborative learning culture. Measure and improve engineering impact using key metrics. Maintain clear, up‑to‑date documentation for all components. What you bring 5+ years of hands‑on experience with C# and the .NET framework. Skilled in developing and maintaining cloud‑based applications. Experienced with microservices and distributed architectures. Strong knowledge of RESTful API design and best practices. Proficient in SQL Server and Entity Framework (or similar ORMs). Familiar with cloud platforms; Azure experience preferred. Knowledge of messaging systems such as RabbitMQ or Kafka. Fluent in written and spoken English. FinTech or banking industry experience is an advantage. Please note, that you need EU citizenship and/or a valid work permit for Germany. About the technologies we use: Our teams have autonomy when it comes to tech choices. The example below will give you some insights, and we are looking forward to discussing this further with you. All solutions developed cloud‑native targeting Azure - Infrastructure defined using Terraform - Services deployed to Kubernetes clusters by default - A growing microservice ecosystem with event‑based integration - Using latest .NET Core - RESTful API design - Single‑page frontend apps served by CDN - Frontend tech using TypeScript, often Angular or standard Web Components (Stencil) - Automated tests in each layer - Design collaboration using Figma. Equal Opportunity Employer Statement We want to be a fair and inclusive employer. We value the diverse perspectives that a diverse workforce brings to the table. Therefore, we are actively looking for people who enrich our company through their identity, background and personal experiences, with or without a disability. Our plus points Inclusive and valuing culture At Riverty, you can be who you are. We strive to create an inclusive environment and an appreciative culture, enhanced by our employee networks. Health & Wellbeing Your physical and mental health is important to us. Take advantage of our various preventive care and support services. Professional and Personal Development Take advantage of our numerous training and development opportunities. Benefit, for example, from training courses offered by Bertelsmann University, language courses or leadership trainings Monetary Benefits & Discounts Know that you're appreciated with plenty of employee benefits & discounts just for you. Flexibility Our diverse working models empower you to customize your work to perfectly align with your preferences. Benefit from mobile office, flexible working hours and part-time models. Apply now