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voize

Freelance Senior Backend Engineer - Kotlin (m/f/d)

voize Berlin, Germany

Software Development · 51-200 employees

5 d ago
Remote kotlin Senior (5-10 yrs) Contractor Germany
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About the role

You will develop and maintain scalable API integrations to connect the company's platform with various senior care and hospital software systems. This role involves end-to-end ownership of the integration lifecycle, from initial design and data modeling to implementation and ongoing development.

What they look for

Kotlin Backend Development API Design REST API Integration Data Modeling Scalable API Development German Language

Requirements

The ideal candidate possesses several years of backend development experience with excellent proficiency in Kotlin and RESTful API design. Fluency in German (C1 level) is required for effective communication with partners and clients.

Full description

🎤 Why voize? Because we’re more than just a job!

At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people.

💡 Your Mission

As a Freelance Senior Backend Engineer for our German Market squad, you’ll ensure that data flows smoothly between our products and our partners' software solutions. You'll build and maintain the integrations that connect the voize with senior care and hospital software platforms. We are open for you to be based remotely across Germany, France or the UK.

🚀 Your Daily Business – No two days are alike

  • Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector
  • Build future-proof solutions – Develop a scalable API, set industry standards, and work closely with partners and clients
  • Take end-to-end ownership – From the idea and implementation to the ongoing development of our integrations
  • Architecture with foresight – Design thoughtful data models and sustainable solutions for complex systems
  • Work with impact – Your work saves caregivers time, improves documentation, and supports people who do amazing work every day.

🤝 Your Skillset – What you bring to the table

  • Several years of experience in backend development and API integration
  • Excellent proficiency with Kotlin
  • API design and development with REST
  • Fluent in German (C1) to communicate effectively with partners
  • Willingness and work authorisation to travel to Berlin (we cover your expenses!)
  • Can work with us for minimum 3+ months

✨ Ready to talk? Apply now! 🚀

We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!

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