Back-End-Developer (m,f,x) Kotlin, Berlin or surroundings

Are you passionate about building secure and scalable backend systems from scratch, do you enjoy working with modern technologies and want to have real impact on digital products used by a wide user base? Then this role might be the perfect next step for you!

🔧 What You Will Do

• Build and maintain Kotlin & Spring Boot–based microservices
• Develop and expose REST APIs for internal and external consumers
• Ensure systems meet performance, reliability, and security standards
• Contribute to code quality through reviews, testing, and best engineering practices
• Stay current with modern technologies and introduce improvements
• Ensure compliance with internal architecture, code, and security guidelines

🧩 What You Bring

• Good experience with Kotlin (at least 1-2 years) and Spring Boot - MUST HAVE
• Already Located in Berlin or around Berlin - MUST HAVE
• Experience with relational databases
• First experience with microservices and REST API design
• Experience working in agile environments
• A proactive, ownership-driven mindset
• Good communication and collaboration skills

💶 What’s on Offer:

• 💶 Good Salary: €65-75k fix, no bonus
• 📚 €1,500 yearly learning budget + €50 Spendit card
• 🖥️ €500 budget for peripherals
• 🌴 30 vacation days + additional days off
• 🚇 Public transport allowance
• 🧘 Flexible working hours and high trust
• 🌍 30 days EU remote per year, English is business language
• 🎉 Strong team culture & community events
• 🧒 Family-friendly policies, multicultural environment
• 🏯 Modern campus with gym, café, rooftop terrace & canteen
• 🔒 Stable employer with long-term growth (8+ years)