ETRM Software Engineer I Java at Vattenfall · Hamburg

companyDescription
Vattenfall is a European energy company with approximately 20.000 employees. For more than 100 years we have electrified industries, supplied energy to people’s homes and modernized our way of living through innovation and cooperation. We are looking for talented individuals who, in addition to their passion for their own role, also have strong team spirit and want to contribute to supporting a meaningful corporate mission.
Right in the heart of Vattenfall, at Business Area (BA) Markets, you will find an inspiring international environment, with a culture of care and personal growth, enabling you to be who you are, having fun, building strong relationships and learning every day. Find out what our colleagues think about our culture: https://youtu.be/-9qGrDUCptA
We employ around 500 professionals who are active across Europe with offices in Sweden, Germany, The Netherlands, and the United Kingdom to drive the energy transition together. Our role in Vattenfall is to maximize the value of the overall portfolio by optimizing and dispatching, hedging, and sourcing for Vattenfall's sales and generation volumes. We serve as Vattenfall’s single access to energy commodity markets and trade electricity, emissions, fuels, freight, and renewable certificates.
In BA Markets the mission of the Unit OU Operations is to drive the digital transformation. OU Operations consists of diverse and highly skilled employees from more than 20 countries. We work internationally from our locations in Stockholm, Hamburg and Amsterdam.
jobDescription
We are looking for an ETRM Software Engineer to join our team in Hamburg and help us build technology that supports the future of energy trading.
As a Software Engineer, you will design, build, and evolve software products that support and enhance our energy trading landscape. You will work on business-critical applications used throughout the organisation, helping to solve technical challenges and delivering reliable solutions that make a tangible difference to daily operations.
Based in our modern HafenCity office, you will be part of an international and collaborative team of engineers, analysts, and business experts. You will have the opportunity to contribute your ideas, learn from colleagues across different disciplines, and grow your expertise both technically and within the energy sector.
Your responsibilities
Design, develop, and maintain Java-based applications and services supporting trading, operational, and risk-related processes.
Contribute across the full software development lifecycle, from requirements analysis and solution design through implementation, testing, deployment, and ongoing support.
Apply modern software engineering practices and technologies, including cloud platforms, APIs, automation, CI/CD pipelines, and data-driven applications.
Collaborate closely with business stakeholders and technical colleagues to understand challenges, explore solutions, and deliver reliable, scalable, and maintainable software.
Work in a highly skilled engineering environment that values ownership, innovation, knowledge sharing, collaboration, and continuous improvement.
Deepen your technical expertise while gaining valuable insight into European energy markets and the systems that support them.
Contribute directly to technology solutions that help enable a sustainable and reliable energy future.
qualifications
What You Bring
3-5 years of professional experience in software development, ideally working with Java and the Spring ecosystem to build and maintain business-critical applications.
A completed degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience gained through professional software development.
A good understanding of software engineering principles, including object-oriented design, APIs, application integration, and modern development practices.
Experience contributing to the full software development lifecycle, including requirements analysis, development, testing, deployment, and support within a collaborative team environment.
Familiarity with modern development tools and technologies such as CI/CD pipelines, cloud platforms, container technologies, and relational databases.
Experience with TypeScript and frontend technologies such as Angular is beneficial, but not required.
Strong problem-solving skills, a collaborative mindset, and an interest in learning new technologies and business domains.
Good communication skills in English and the ability to work effectively in an international and cross-functional environment.
You do not need to meet every single requirement to be successful in this role. If you have a strong foundation in software engineering, a few years of experience, enjoy solving complex problems, and are motivated to learn about energy trading, we would be happy to hear from you.
additionalInformation
Benefits
Your development is a priority at Vattenfall BA Markets. Your professional journey will benefit from working in the exciting industry of energy trading, and in interdisciplinary teams. To support your career, we offer opportunities to grow through training, job rotations, talent programs and a working environment that stimulates learning.
Our work culture at Vattenfall is excellent. We have an open corporate culture with flat hierarchies. Modern and flexible working conditions, including mobile work, promote wellbeing. In Germany, our work week consists of 37.5 hours with, in many cases, the possibility to work part-time. Up to 49% of your working time can be mobile work, and you are entitled to 30 days of vacation per year.
Your health is important to us. We provide several health programs and support throughout potentially challenging life situations.
Your colleagues will be another highlight. We employ inspiring people with diverse backgrounds. Together with our culture and your tasks, they form an interesting and fun place to work.
You can find our new state of the art office next to Elbbrücken.
More information

We welcome your application in English, no later than 16th of September 2026. We kindly request that you do not send applications by any means other than via our website as we cannot guarantee that we will be able to process applications that are not made via our website.
For more information about the recruitment process you are welcome to contact our Recruiter Jil Ungethüm via phone at +49 40 79022 1378.
At Vattenfall we are convinced that diversity contributes to build a more profitable and attractive company and we strive to be good role model regarding diversity. Vattenfall works actively for all employees to have the same opportunities and rights regardless of gender, ethnicity, age, transgender identity or expression, religion or other belief, disability or sexual orientation.
The security of Vattenfall and its employees is essential. For that reason, a pre-employment screening will be part of your recruitment process. The screening is based on the role you will fulfill within Vattenfall. The screening will be performed by a third party, called DISA. In addition, a certificate of good conduct (i.e. criminal record certificate) is required for certain positions.
We look forward to receiving your application!