Request
EDSN
Mid-Level Java/Kotlin Developer
Mid-Level Java/Kotlin Developer
Info
Function
Mid-Level Java/Kotlin DeveloperLocation
AmersfoortHours per week
40 hours per weekDuration
June 1, 2026 - December 31, 2026Application number
SRQ177900Segment
ITClosing date
13.05.2026
09:00
Role description and task arrangements
Hello, Mid-Level Java/Kotlin Developer! Would you like to work at the heart of the energy transition?
32–40 hours | Amersfoort / Hybrid (Mon+Wed) | Energy Market / IT | Start date: June 1, 2026 | Duration: at least until the end of the year
Interviews: May 18 and 19 | Applications accepted until Wednesday, May 13 at 9:00 AM | SECONDMENT ONLY! | Target rate: 87.50 euros per hour
At EDSN, you’ll help make the Netherlands more sustainable—every single day—working alongside our partners in the energy sector. With your digital skills and ability to bring people together, you’ll be the essential link between technology and energy. In this way, you’ll help build a reliable and innovative IT infrastructure—today and tomorrow! We have big ambitions, which is why we’re looking for you!
What will you do?
- You will develop and test Java or Kotlin applications within a microservices architecture.
- You will work with modern CI/CD processes and tools such as GitLab and Spring Boot.
- You will contribute to the development of software that is crucial to the energy market.
- You will work in a multidisciplinary DevOps team where you will collaborate with developers, operations staff, and architects.
- You'll have the opportunity to learn, ask for feedback, and take the initiative.
- You'll be involved in every stage of software development—from concept to delivery.
What do you bring?
- A completed associate's or bachelor's degree in IT or a related STEM field (preferred)
- At least 3 years of experience with Java and/or Kotlin development
- Knowledge of Spring Boot and microservices.
- Experience with CI/CD (GitLab), Kubernetes, Terraform, GitOps (Argo CD), and cloud (AWS) (preferred)
- Knowledge of test automation and quality gates (e.g., contract testing, performance testing, and security scans).
- Understanding of modern software architecture (Domain-Driven Design, API Design, and Event-Driven Architecture) (pre-requisite)
- Experience with Agile/SAFe (preferred)
- A curious, eager-to-learn attitude and a passion for technology.
- Good command of the Dutch language.
Who are you?
• A team player who thrives on collaborating in a multidisciplinary team and enjoys working at the Amersfoort office on Mondays and Wednesdays.
• Independent, proactive, and committed to delivering results.
• Solution-oriented and brings new ideas to the table.
• Willing to work on-call shifts for critical applications.
• Assertive, with the ability to give and receive feedback.
What do we offer?
• Greenfield project with impact: modernizing and rebuilding a core system in the energy market.
• Modern tech stack: You’ll work with the latest tools and technologies.
• Small, autonomous team: short lines of communication, plenty of responsibility
• Results-oriented environment: Focus on concrete, measurable deliverables.
• Safe team culture: You’re encouraged to experiment, learn, and make mistakes.
• Develop software solutions that are essential to a sustainable energy market.
• Translating complex issues into practical applications.
• The use of Event-Driven Architecture and Domain-Driven Design.
About EDSN
Energie Data Services Nederland (EDSN) is a growing company that is rapidly advancing in the professionalization of its organization. From startup to scale-up. EDSN develops a reliable and innovative ICT infrastructure for all regional and national grid operators. We specialize in collecting and making usage data accessible, which other market players can then use to develop new services. With these data services, we are paving the way for the energy transition and, with it, the sustainability of the Netherlands.
Company data
Company data
EDSN
Role description and task arrangements
Hello, Mid-Level Java/Kotlin Developer! Would you like to work at the heart of the energy transition?
32–40 hours | Amersfoort / Hybrid (Mon+Wed) | Energy Market / IT | Start date: June 1, 2026 | Duration: at least until the end of the year
Interviews: May 18 and 19 | Applications accepted until Wednesday, May 13 at 9:00 AM | SECONDMENT ONLY! | Target rate: 87.50 euros per hour
At EDSN, you’ll help make the Netherlands more sustainable—every single day—working alongside our partners in the energy sector. With your digital skills and ability to bring people together, you’ll be the essential link between technology and energy. In this way, you’ll help build a reliable and innovative IT infrastructure—today and tomorrow! We have big ambitions, which is why we’re looking for you!
What will you do?
- You will develop and test Java or Kotlin applications within a microservices architecture.
- You will work with modern CI/CD processes and tools such as GitLab and Spring Boot.
- You will contribute to the development of software that is crucial to the energy market.
- You will work in a multidisciplinary DevOps team where you will collaborate with developers, operations staff, and architects.
- You'll have the opportunity to learn, ask for feedback, and take the initiative.
- You'll be involved in every stage of software development—from concept to delivery.
What do you bring?
- A completed associate's or bachelor's degree in IT or a related STEM field (preferred)
- At least 3 years of experience with Java and/or Kotlin development
- Knowledge of Spring Boot and microservices.
- Experience with CI/CD (GitLab), Kubernetes, Terraform, GitOps (Argo CD), and cloud (AWS) (preferred)
- Knowledge of test automation and quality gates (e.g., contract testing, performance testing, and security scans).
- Understanding of modern software architecture (Domain-Driven Design, API Design, and Event-Driven Architecture) (pre-requisite)
- Experience with Agile/SAFe (preferred)
- A curious, eager-to-learn attitude and a passion for technology.
- Good command of the Dutch language.
Who are you?
• A team player who thrives on collaborating in a multidisciplinary team and enjoys working at the Amersfoort office on Mondays and Wednesdays.
• Independent, proactive, and committed to delivering results.
• Solution-oriented and brings new ideas to the table.
• Willing to work on-call shifts for critical applications.
• Assertive, with the ability to give and receive feedback.
What do we offer?
• Greenfield project with impact: modernizing and rebuilding a core system in the energy market.
• Modern tech stack: You’ll work with the latest tools and technologies.
• Small, autonomous team: short lines of communication, plenty of responsibility
• Results-oriented environment: Focus on concrete, measurable deliverables.
• Safe team culture: You’re encouraged to experiment, learn, and make mistakes.
• Develop software solutions that are essential to a sustainable energy market.
• Translating complex issues into practical applications.
• The use of Event-Driven Architecture and Domain-Driven Design.
About EDSN
Energie Data Services Nederland (EDSN) is a growing company that is rapidly advancing in the professionalization of its organization. From startup to scale-up. EDSN develops a reliable and innovative ICT infrastructure for all regional and national grid operators. We specialize in collecting and making usage data accessible, which other market players can then use to develop new services. With these data services, we are paving the way for the energy transition and, with it, the sustainability of the Netherlands.
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