etalytics GmbH

Software Developer Backend (mf/d) Java/Kotlin, Spring Boot

Darmstadt full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

Do you want to build software that makes a measurable impact on energy efficiency and sustainability?
At etalytics, we develop AI-powered energy management solutions that help industrial companies reduce energy consumption, CO₂ emissions, and operating costs. As a Backend Software Developer, you will take ownership of backend services and features for our etaONE® platform.
You will contribute your ideas to technical decisions, and continuously improve the scalability, maintainability, and quality of our software. At the same time, you will have room to grow your technical expertise and responsibilities.
 
Tasks
Develop and enhance backend services and REST APIs for our etaONE® platform using Java, Kotlin, and Spring Boot.

Take ownership of more complex features, from technical concept through to production-ready implementation.

Work closely with Product Owners, Frontend Developers, Data Scientists, and other stakeholders to translate requirements into robust technical solutions.

Ensure high software quality through automated testing, code reviews, and clean code principles.

Analyze and improve existing services with a focus on maintainability, performance, and scalability.

Approach debugging and root-cause analysis in a structured way and help the team implement sustainable solutions.

Share your knowledge with the team and support less experienced colleagues with technical questions.

Requirements
You bring a minimum of 2 years of hands-on experience in backend development

Strong knowledge of Java or Kotlin and practical experience with Spring or Spring Boot

You are confident in designing, developing, and integrating REST APIs.

Experience with relational databases such as PostgreSQL allows you to independently develop data models and database queries.

Automated testing, Git, code reviews, and clean code principles are part of your professional development workflow.

You structure complex technical tasks independently and develop pragmatic, maintainable solutions.

Use our AI tools to drive and improve your development.

Fluent English skills enable you to work confidently in our international environment, German Knowledge is a Plus.

Benefits:
Purpose-driven work: Support industrial companies in becoming more efficient and sustainable
Flexibility: Hybrid working with home office options and flexible working hours
Team spirit: A supportive, collaborative environment with plenty of room for exchange and cooperation
Community: Regular team events and shared activities
Work-life balance: 30 days of vacation plus a flexible, agile work culture
Well-being: Tax-free benefits card, subsidized local gym membership and the option of a job bike
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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT MySQL Project Management Software Developer Backend Mid level

Likely questions

  1. Tell us about work you have done that is close to the Software Developer Backend (mf/d) Java/Kotlin, Spring Boot role.
  2. How would you approach your first 30 days at etalytics GmbH?
  3. Which of MySQL, Project Management and Software have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with MySQL, Project Management and Software.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Software Developer Backend (mf/d) Java/Kotlin, Spring Boot role because I can bring practical experience in MySQL, Project Management and Software, learn the team quickly, and contribute to the outcomes etalytics GmbH needs from this hire.

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