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Backend Engineer - Kotlin (m/f/d)

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

At voize, we’re revolutionizing the healthcare industry with AI: Nurses simply speak their documentation into their smartphones, and our AI automatically generates the correct entries. This saves each nurse an average of 39 minutes per day, improves the quality of documentation, and makes their daily work much more rewarding.

Voize is YCombinator-funded, already in use at over 600 senior care homes, and has grown by 100% in the last 90 days. Our customers save over 3.5 million hours annually – time spent on people instead of paperwork.

But this is just the beginning. With our self-developed voize AI, we’re transforming not only the healthcare industry, but also have the potential to create value in many other sectors – from healthcare to inspections.

As a dynamic team, we blend cutting-edge technology with social impact. And now, it’s your turn to join us!

💡 Your Mission

As a Backend Engineer - Integrations, you’ll ensure that data flows smoothly between our products and our partners' software solutions. Without these integrations, voize would just be an island. Through your work, you’ll build the bridges that make us successful.

🚀 Your Daily Business – No two days are alike

  • Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the medical, care and engineering 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, particularly with Kotlin and PostgreSQL (or MongoDB)

  • Experience with infrastructure technologies such as Linux, Kubernetes, Docker, and AWS

  • API design and development with REST/GraphQL, as well as authentication

  • Familiar with development tools like Git and CI/CD

🎯 Our Success Mindset – How we work at voize

  • You speak fluent German & good English to communicate effectively with our team and customers

  • Resilience is one of your strengths – you see challenges as opportunities, not obstacles

  • Iterative working suits you – you test, learn, and improve constantly instead of waiting for perfection

  • You value open communication and constructive feedback – and contribute to a positive team culture

🌱 Growing together – what you can expect at voize

  • Become a co-creator of our success with virtual stock options

  • Our office is in Berlin, and we offer remote work

  • We provide flexible working hours because you know best when you work most efficiently!

  • Access to various learning platforms (e.g., Blinkist, Audible, etc.)

  • We have an open culture and organize regular work weeks and team events to collaborate and bond

  • We are a fast-growing startup, so you'll encounter various challenges, providing the perfect foundation for rapid personal growth

  • Your work will make a real impact, helping alleviate the workload for healthcare professionals

  • Free Germany Ticket and Urban Sports Club membership

  • 30 days of vacation – plus your birthday off

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!

Average salary estimate

$70000 / YEARLY (est.)
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$60000K
$80000K

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What You Should Know About Backend Engineer - Kotlin (m/f/d), Voize

At Voize, we're on a mission to revolutionize the healthcare industry with innovative AI technology, making daily tasks for nurses much easier and more efficient. We are seeking a talented Backend Engineer - Kotlin (m/f/d) to join our dynamic team in Berlin. In this engaging role, you'll develop and maintain interfaces that integrate our products with various software solutions in the medical and engineering sectors. You'll have the chance to shape the future of our integrations, ensuring smooth data flow that directly impacts caregivers' efficiency. Your work will involve building a scalable API, designing data models, and collaborating closely with partners and clients, making each day unique and impactful. We’re looking for someone with several years of backend development experience, particularly with Kotlin and PostgreSQL, alongside familiarity with infrastructure technologies like Linux and AWS. At Voize, we value resilience, open communication, and iterative work principles, so you’ll fit right in if you're someone who thrives in a collaborative environment. Plus, enjoy flexible working hours, a positive team culture, a range of learning platforms, and the opportunity to grow rapidly within our fast-paced startup. So, if you're ready to make a tangible difference and transform healthcare alongside us, apply now! We can’t wait to meet you!

Frequently Asked Questions (FAQs) for Backend Engineer - Kotlin (m/f/d) Role at Voize
What are the main responsibilities of the Backend Engineer - Kotlin at Voize?

As a Backend Engineer - Kotlin at Voize, your primary responsibilities will include developing and managing APIs that integrate our systems with those of our partners in the healthcare and engineering sectors. You will take end-to-end ownership of integration projects, designing data models, and ensuring quality solutions that improve workflows for caregivers. Additionally, you will collaborate with teams to maintain high industry standards and implement scalable solutions.

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What qualifications do I need to apply for the Backend Engineer - Kotlin position at Voize?

To qualify for the Backend Engineer - Kotlin role at Voize, you should have several years of experience in backend development, particularly using Kotlin. Familiarity with database technologies such as PostgreSQL or MongoDB, as well as infrastructure tools like Docker, Kubernetes, and cloud services like AWS, is essential. Strong communication skills in both German and English are also required to interact effectively with the team and clients.

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How does the Backend Engineer role at Voize impact the healthcare industry?

The Backend Engineer - Kotlin at Voize plays a crucial role in the healthcare industry by ensuring that our AI solutions effectively integrate with existing healthcare systems, thus facilitating better documentation and saving nurses significant time. Your work directly contributes to improving the efficiency of caregivers, enabling them to focus more on patient care instead of paperwork.

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What is the work culture like at Voize for a Backend Engineer?

The work culture at Voize is dynamic and collaborative, promoting open communication and constructive feedback. As a Backend Engineer - Kotlin, you'll be part of a team that values resilience and iterative work processes. You'll enjoy flexibility in working hours and opportunities for personal growth as we tackle various challenges together in a fast-paced startup environment.

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What benefits can I expect as a Backend Engineer - Kotlin at Voize?

As a Backend Engineer - Kotlin at Voize, you can expect a range of benefits, including flexible working hours, the option for remote work, 30 days of vacation plus your birthday off, a Germany Ticket, and an Urban Sports Club membership. Additionally, you'll have access to numerous learning platforms to support professional development and the opportunity to participate in team events for camaraderie.

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Common Interview Questions for Backend Engineer - Kotlin (m/f/d)
Can you describe your experience with Kotlin as it relates to backend development?

In your response, highlight specific projects you've worked on where you utilized Kotlin for backend development. Discuss challenges you've faced and how you overcame them, while emphasizing your understanding of Kotlin's features and its application in building scalable APIs.

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How do you approach API design and integration?

When answering, articulate your method for designing APIs, mentioning best practices and considerations for scalability, security, and usability. Share examples from previous roles where you successfully integrated APIs and conquered any challenges during the process.

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What strategies do you employ for data modeling in complex systems?

Explain your approach to data modeling, including how you analyze requirements, choose appropriate data structures, and ensure that models are flexible yet efficient. Mention any tools or techniques you prefer for visualizing or optimizing data models.

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How do you ensure smooth collaboration with frontend teams?

Discuss your experience working with frontend teams by emphasizing your communication skills and examples of past collaborative projects. Stress the importance of early involvement and continuous feedback to ensure alignment on integration points.

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Can you provide an example of a time when you turned a challenge into an opportunity while working on a project?

Share a specific instance where you faced a challenging technical issue or project requirement. Highlight how you approached the problem, the solutions you explored, and what you learned from the experience, showcasing your resilience and problem-solving skills.

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What role does CI/CD play in your development process?

Explain your understanding of CI/CD practices and how you have implemented them in your previous projects to enhance code quality, speed up deployments, and facilitate continuous integration. Discuss tools you have used and the benefits realized for your team and product.

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How do you stay updated on the latest technologies and trends in backend development?

Describe your methods for staying informed on emerging trends, such as attending workshops, following industry blogs, or participating in communities. Mention any specific resources you rely on, including websites, podcasts, or online courses.

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What best practices do you follow for securing APIs?

Outline the security practices you prioritize when developing APIs. Discuss techniques such as implementing OAuth, rate limiting, input validation, and using HTTPS for secure data transmission. Provide examples of how you have applied these practices in your work.

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How do you approach testing your backend systems?

Share your testing strategy, including the types of tests you conduct (unit tests, integration tests, etc.). Emphasize the importance of testing in ensuring a robust and reliable system and any tools you favor for automation in the testing process.

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Why do you want to work as a Backend Engineer at Voize?

Tailor your answer to reflect your excitement about Voize's mission to transform healthcare through AI. Discuss how your skills align with the role and how you look forward to contributing to a solution that genuinely improves the lives of caregivers and patients alike.

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EMPLOYMENT TYPE
Full-time, remote
DATE POSTED
March 18, 2025

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