Back End Developer in GERMANY

💼 We’re Hiring: Senior Backend Engineer (Java/Kotlin) – Remote | Payment Systems Integration Freelance

Are you a backend expert ready to take on a high-impact challenge? We're looking for a Senior Backend Engineer to help us integrate a new payment system into our platform—powering seamless, secure transactions for users around the globe.

🌍 About the Role

As part of our engineering team, you’ll lead the backend development efforts for integrating a modern payment solution. You’ll work in a fully remote, multicultural environment, collaborating with product, data, and DevOps teams to deliver a scalable and reliable system.

🔧 Your Skillset Includes:

• Strong proficiency in Java or Kotlin
• Deep experience with Spring Boot and the Spring ecosystem
• Solid understanding of MySQL or other relational databases
• Experience with AWS and cloud-native development
• Familiarity with Liquibase or similar schema management tools
• Hands-on with Git, Kafka, Firehose, and CI/CD tools like Jenkins or GitHub Actions
• Knowledge of APIs, microservices architecture, and server-side processes
• Experience with monitoring tools like Grafana or Datadog
• Excellent communication skills in English and a proactive, ownership-driven mindset

✨ Bonus Points For:

• Experience in advertising technology
• Familiarity with Airflow and DBT for data workflows
• Background in payment systems integration
• Experience working in fully remote and multicultural teams

🌟 Why Join Us?

• 100% Remote Work
• Inclusive, global team culture
• Opportunity to lead a critical payment integration project
• Regular team events and offsites
• A chance to shape the future of a fast-growing platform

If you're excited about building secure, scalable systems and want to make a real impact—we’d love to hear from you!

📩 Apply now