Senior Software Engineer (Kotlin/Java) - Finance Technology

We are seeking a talented Senior Software Engineer with strong Kotlin skills (or Java and a willingness to learn Kotlin) to join our Finance Technology Stream within the Foundation Division at FlixTech. This role is based in Berlin or Munich.

Our Finance Technology Stream is dedicated to supporting the business's efficient growth by delivering smart, compliant, and automated finance solutions. We prioritize simplicity for our internal users, enabling them to focus on core tasks rather than manual processes. The team you'll join is not focused on user-facing experiences but on the integrity and trustworthiness of our financial data, even amidst complex and evolving business scenarios. As part of a self-managed, cross-functional team, you will directly contribute to new country launches, new business models, and the continuous evolution of Flix's financial infrastructure.

This position is ideal for individuals who value ownership, enjoy working closely with real business challenges, and are keen to build the long-term foundations of a global company. If collaboration, thoughtful engineering, and building systems that prioritize correctness are important to you, we encourage you to apply.

About the Role

• Design, develop, and maintain backend services using Kotlin.
• Build and evolve scalable, event-driven systems that process, validate, and expose financial data.
• Utilize 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.

About You

• 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), where investigation, analysis, and precision are key.
• Clear communication skills in English, open-mindedness, curiosity, and a motivation to continuously improve both yourself and the systems you work on.

We recognize that everyone possesses a unique set of valuable skills and experiences. If you believe you could make an impact even without meeting 100% of the requirements, we strongly encourage you to apply. We want to hear from you!

What We Offer

• 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.

To view more local benefits specific to each office location, please check out this link: Locations - Flix Career

Why Join Flix?

At Flix, you'll find teams that rally together to overcome challenges and spark creativity. We believe in an ownership culture, giving you the freedom to take initiative, make an impact, and shape your own career path.

As we continue to expand globally, you can make a real difference in how we work.

If you're ready to grow and lead your journey, Flix is the place for you!

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