Senior Kotlin / Java Software Engineer - Banking Payments

Job Description

• Build and evolve business-critical payment services using Kotlin, Java and Spring Boot, enabling customers to move money reliably through SEPA while supporting the wider banking platform.
• Develop services across the payment lifecycle, including initiation, validation, execution, status handling, returns, exception management and reconciliation.
• Design clear domain models, APIs and event-driven workflows connecting customer-facing products with internal systems and external banking partners.
• Write clean, secure, well-tested and maintainable code, with particular attention to correctness, resilience and traceability when moving money.
• Develop and operate cloud-native applications on AWS, including containerised services on ECS and event-driven workloads on Lambda.
• Shape reliable delivery and operations with infrastructure as code, CI/CD pipelines, observability and monitoring.
• Work in autonomous, cross-functional teams using agile practices, Domain-Driven Design, code reviews, automated testing and continuous delivery.
• Take ownership from idea to production, delivering measurable value while improving quality, automation, reliability and developer experience.

Qualifications

• Strong experience building backend services with Kotlin or Java and Spring Boot.
• A solid understanding of Domain-Driven Design and the ability to translate complex business processes into clear software models.
• Experience designing and operating distributed, event-driven systems and APIs.
• Familiarity with cloud-native development on AWS, especially containerised 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 solving problems.
• An interest in complex financial workflows or the curiosity to learn them quickly. Exposure to SEPA payments or payment processing would be a plus.
• A university degree in a relevant field of study (e.g. computer science, engineering, sciences, ...) or a comparable qualification.

Additional Information

• Be part of one of the fastest-growing and most visible Fintech startups in Europe, creating innovative services that have a substantial impact on the lives of our customers
• Work with an international, diverse, inclusive, and ever-growing team that loves creating the best products for our clients
• Be productive with the latest hardware and tools
• Learn and grow by joining our in-house knowledge sharing or career development sessions and spending your individual Education Budget 
• Learn and experience German culture first hand by joining our free German language classes
• International relocation support is provided if required 
• Opportunity to work from abroad
• Benefit from an attractive compensation package and from the company pension scheme
• Monthly contribution of 50% for the ‘Deutschland Jobticket’
• Say goodbye to order commissions and say hello to your complimentary subscription of Scalable Capital's PRIME+ Broker
• Enjoy flexible and discounted sports activities with Urban Sports Club