Senior Software Engineer (Kotlin,Java) (m/f/d)

We’re looking for a talented Senior Software Engineer with strong Kotlin skills (or Java and willing to learn Kotlin) to join us in Berlin or Munich. In the Foundation Division of FlixTech, our Finance Technology Stream helps the business grow efficiently by delivering smart, compliant, and automated finance solutions.

• Design, develop, and maintain backend services using Kotlin
• Build and evolve scalable, event-driven systems that process, validate, and expose financial data
• Use AI tools such as Claude Code and Copilot conscientiously to assist in faster and higher-quality development
• Collaborate closely with the Product Owner and Finance stakeholders to translate business requirements into robust technical solutions
• Ensure data accuracy, traceability, and auditability across financial and accounting flows
• Improve system reliability, observability, and performance for business-critical processes
• Contribute to clean code, architectural discussions, and continuous improvement of engineering practices

• 5-7 years of experience developing backend systems, with Java or preferably using Kotlin
• Hands-on experience building backend services using the Spring ecosystem (e.g. Spring Boot, Spring Data)
• Experience with event-driven design (e.g. asynchronous processing, messaging, domain events)
• Practical experience with cloud platforms (preferably AWS, or similar)
• Solid understanding of databases, both NoSQL (e.g. DynamoDB) and/or relational systems
• Comfortable working in complex, data-heavy domains (ideally Finance)

• Travel perks: 12 free Flix vouchers + 12 discount vouchers for friends & family
• Work from (M)Anywhere: Depending on your role, work from another location for up to 60 days per year
• Hybrid work model: We are an office-first company, but we offer flexibility to balance work and life
• Wellbeing support: Access confidential 1:1 counselling, courses, and stress management for yourself and up to four family members
• Learning & Development: Take advantage of language classes, training courses, and expert-led sessions to grow your skills
• Mentoring Program: Connect with experienced colleagues to gain insights and accelerate your career