(Senior) Kotlin / Java Software Engineer - Banking Payments (m/f/x)
Scalable Capital GmbH13 hours ago
Munich, GermanySenior
Responsibilities
- Build and evolve business-critical payment services using Kotlin, Java, and Spring Boot.
- Develop services across the payment lifecycle, including initiation, validation, execution, status handling, returns, exception management, and reconciliation.
- Design domain models, APIs, and event-driven workflows connecting customer-facing products with internal systems and external banking partners.
- Develop and operate cloud-native applications on AWS, including containerized services on ECS and event-driven workloads on Lambda.
- Own delivery from idea through production while improving quality, automation, reliability, observability, and developer experience.
- Work in autonomous, cross-functional teams using code reviews, automated testing, continuous delivery, and Domain-Driven Design.
Requirements
- Strong experience building backend services with Kotlin or Java and Spring Boot.
- Solid understanding of Domain-Driven Design and the ability to model complex business processes clearly.
- Experience designing and operating distributed, event-driven systems and APIs.
- Familiarity with AWS cloud-native development, especially containerized and serverless workloads.
- Confidence with automated testing, CI/CD, infrastructure as code, and production observability.
- A quality and security mindset with attention to reliability, maintainability, and operational ownership.
- Clear communication skills and a collaborative, pragmatic approach to problem solving.
- Interest in complex financial workflows or the ability to learn them quickly.
- Exposure to SEPA payments or payment processing is a plus.
- A university degree in a relevant field such as computer science, engineering, or sciences, or a comparable qualification.
Benefits
- International, diverse, inclusive, and growing team environment.
- Latest hardware and tools.
- In-house knowledge sharing, career development sessions, and an individual education budget.
- Free German language classes.
- International relocation support when required.
- Opportunity to work from abroad.
- Company pension scheme and an attractive compensation package.
- Monthly company contribution of 50% toward the Deutschland Jobticket.
- Complimentary Scalable Capital PRIME+ Broker subscription with no order commissions.
- Flexible and discounted sports activities through Urban Sports Club.
About Scalable Capital GmbH
Scalable Capital builds a digital investing and banking platform for retail customers in Europe, combining brokerage (stocks, ETFs, crypto, derivatives), savings plans, and interest-bearing accounts under a full German banking licence. Its business spans Scalable Broker subscriptions and fees, and Scalable Wealth, a managed ETF portfolio service also offered as a white‑label solution to banks. Founded in 2014 and headquartered in Munich, it operates across multiple European markets.