Software Engineer I Algorithmic Trading

Help us build and run the core infrastructure powering algorithmic trading in live energy markets - contributing directly to a more efficient and sustainable energy system.

In this role youll design and operate low-latency highly reliable systems that influence trading decisions in real time. Youll collaborate closely with traders quant developers and data scientists working at the intersection of technology markets and risk.

Whether you already bring solid experience or are ready to grow into a more senior role youll take on increasing ownership step by step - supported by a collaborative team environment.

What Youll Do

• Build high-performance trading systems
  Design develop and continuously improve robust low-latency applications together with traders and quantitative experts.
• Ensure reliability together as a team
  Contribute to the availability stability and performance of our systems across the full stack supported by experienced colleagues.
• Improve how we operate systems
  Help evolve monitoring alerting and deployment processes to ensure stable and scalable trading operations.
• Explore and introduce new ideas
  Stay up to date with developments in technology and algorithmic trading and bring your perspective into the team.
• Develop risk-aware solutions
  Support the implementation of safeguards monitoring and controls to ensure secure and compliant trading.
• Shape how we work
  Contribute to engineering best practices such as testing documentation and knowledge sharing.

What Makes This Role Stand Out

• Real impact with purpose
  Your work contributes to how energy markets operate - supporting the transition to more sustainable energy systems.
• Learn and grow with ownership
  We support you in taking on responsibility at your own pace and developing into a senior expert role.
• Collaborative environment
  Work closely with business and tech colleagues in a supportive low-ego team-oriented setup.
• Modern technology & continuous improvement
  We value curiosity innovation and creating sustainable long-term solutions - not just quick fixes.

Qualifications :

Your Profile

We know that candidates dont always meet every single requirement. If this role excites you we encourage you to apply.

What you bring

• A relevant degree vocational training or comparable practical experience
• Experience in software development (ideally with C#)
• Interest in building and operating production systems
• Familiarity with distributed systems and/or cloud technologies (e.g. Kubernetes Azure is a plus)
• Analytical thinking and a structured approach to problem-solving
• Experience or interest in CI/CD and automated deployments
• Good communication skills and a team-oriented mindset
• Fluent English (written and spoken)

What helps you stand out

• Experience with Linux environments
• Knowledge of trading protocols (e.g. FIX)
• Exposure to trading energy markets or other high-availability systems

Additional Information :

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 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 24th of June 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.

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!

Remote Work :

No

Employment Type :

Full-time

Experience: years
Vacancy: 1