Senior Full Stack Software Engineer

Business Area (BA) Markets 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. We employ around 500 professionals who are active across Europe with offices in Sweden, Germany, The Netherlands and the United Kingdom.

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.

We have a culture of care and growth. You will collaborate with inspiring people around you, on complex and interesting topics. Together, we drive the energy transition and contribute to a journey towards becoming fossil-free
 
What will you do? 
  
Your tasks and responsibilities: 

• Develop, support, and continuously improve world class software solutions for algorithmic trading together with algorithmic traders, developers, and data scientists in a fast moving agile working environment
• Work in the area of system availability, latency, performance, efficiency, change management, monitoring, emergency response, and capacity planning (on-premise, cloud, and co-location) -> you contribute to “site reliability engineering"
• Focus on the user interface, drive the development of our algo monitoring UI as member of the UI squad in the agile team
• Gain broad exposure to both technical and business aspects of trading
• Adhere to and further develop the company’s algorithmic trading software development standards and best practices, incl. documentation, testing, and peer review

Location  
Katowice (main location), Poland (working remotely)

Who are you? 

Are you a self-starter with dedication for building and managing infrastructure as a robust and reliable foundation for our algorithmic trading? Do you like to work in a dynamic trading environment closely together with the front office? Do you want to contribute to successful algorithmic trading activities by permanently monitoring and optimizing the performance? You embrace to cooperate with software development teams? In that case this job could be the right one for you.  

As our Software Full-stack Engineer you will bring: 

• Proven programming skills and experience in C#/.NET
• Solid backend system implementation experience, good experience with Linux
• Experience in CI/CD and automated deployment (ideally Azure DevOps, Terraform, pipelines)
• Experience in working with Blazor (Blazor Server, Blazor WebAssembly), CSS/HTML and gRPC
• Strong experience with distributed systems and cloud/container technologies (Kubernetes, ideally in Azure)
• Expert-level knowledge of algorithms, design patterns, OOP, threading, multiprocessing, etc.
• Fluency in English (both written and spoken)
• Team player attitude with strong communication skills
• Experience working with Copilot or AI agents is an asset
• Bachelor or Master degree within IT domain is an asset
• Experience in Energy domain is an asset

Our offer 
Good remuneration, a challenging and international work environment, and the possibility to work with some of the best in the field. You will be working in interdisciplinary teams and you can always count on support from committed colleagues. We offer attractive employment conditions and opportunities for personal and professional development. 

More Information 
We welcome your application in English invlufing your CV no later than 2nd of September 2025. 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 Marius Gläßge via e-mail: marius.glaessge@vattenfall.de. 

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, Validata.
 
We look forward to receiving your application! 

Vattenfall is a European energy company with approximately 21 000 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.