Senior Software Engineer (Kotlin,Java) (m/f/d) at Flix | DE | Rezi

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

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

Flix · DE

1 months ago

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

Flix · DE

2 months ago
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About the Role

In the Finance Technology Stream of FlixTech's Foundation Division, you will help the business grow efficiently by delivering smart, compliant, and automated finance solutions. The team focuses on data correctness, consistency, and trustworthiness, supporting new country launches, business models, and the evolution of Flix’s financial backbone. This role is ideal for someone who enjoys ownership, working close to real business problems, and contributing to the long-term foundations of an international company.

Responsibilities

  • 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

Requirements

  • 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
  • Communicate clearly in English, open-minded, curious, and motivated to continuously improve both yourself and the systems you work on

Skills

  • Kotlin
  • Java
  • Spring ecosystem
  • Spring Boot
  • Spring Data
  • Event-driven design
  • Asynchronous processing
  • Messaging
  • Domain events
  • AWS
  • NoSQL
  • DynamoDB
  • Relational databases

Location

  • Berlin
  • Munich

Work Type

  • Hybrid work model
  • Work from (M)Anywhere

Experience Level

  • Senior

Benefits

  • 12 free Flix vouchers
  • 12 discount vouchers for friends & family
  • Work from another location for up to 60 days per year
  • Confidential 1:1 counselling
  • Courses and stress management for yourself and up to four family members
  • Language classes
  • Training courses
  • Expert-led sessions
  • Mentoring Program

About the Company

  • At Flix, you’ll find teams that rally together to overcome challenges and spark creativity.
  • We believe in ownership culture - giving you the freedom to take initiative, make an impact, and shape your own career path.
  • As we continue to expand across the globe, 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!