(Senior) .Net Developer

At Vattenfall, we don’t just “do energy”, we exist to help our customers power their lives in ever climate smarter ways and free from fossil fuel within one generation. We are one of Europe’s leading energy companies with trading activities in the global energy markets. Our Power & Gas business is expanding, and our IT landscape supporting that has a growing need for the fittest solutions.

Technology cannot tackle the climate change. People who know technology can.

We are looking for the brightest IT minds that want to join us in our journey towards fossil freedom, in this case a (Senior) .Net Developer in our Power & Gas Solutions Team. You will guide the development of the current Tech Stack, future applications and overall automation and processes. You will be a full-stack developer with a frontend (Angular) focus.

The team you can join works closely with business – our Power & Gas traders – and takes the leading role in supplying custom developed solutions.

What will you do? 
You and your team colleagues are developing software solutions using latest technologies and methodologies to nurture business development while staying compliant with our software architectural and security guidelines.

Your tasks and responsibilities: 

• Design, develop, and maintain mission-critical applications powering Vattenfall’s energy trading operations
• Take full ownership of the application lifecycle: from development and testing to deployment, monitoring, and continuous improvement
• Work in close partnership with the Product Owner, Business Analysts, internal Stakeholders, and fellow Developers to deliver the central Gas Trading Platform for Vattenfall
• Actively drive the enhancement of automated software testing practices to improve code quality, reliability, and development efficiency across the team
• Completing, full-stack application development (focus on frontend), exploring latest technologies and being always up to date in the field of application development within an agile framework

Who are you? 

Are you triggered by cutting edge technology and innovations? Perfect. We are looking for someone with an enthusiastic open mind that has great willingness to explore and learn.

As our (Senior) .NET Full-Stack Developer – (Frontend focus) you will bring:

• Relevant experience as Full-Stack Developer, Software Engineer or a similar role.
• Several years experience with
  • Frontend: Angular (preferred), React, or Vue.js.
  • Backend: .NET 8, C#, EF Core
  • Cloud: Azure (preferred), AWS, GCP
• Strong motivation to drive and accelerate the existing automated software testing in the team
• Good experience with:
  • CI/CD: Azure Pipelines or a similar technology
  • Event-driven architecture: Kafka, RabbitMQ or similar technologies
  • SQL and NoSQL Databases: PostgreSQL (preferred), SQL-Server, MongoDB
  • Testing: xUnit or NUnit, mocking frameworks like Moq
  • Infrastructure as Code: Terraform
  • REST APIs including API-Clients like Postman, Thunderclient
  • Hosting: Kubernetes, Docker, Helm
  • Azure Application Insights, Azure Entra ID (App Registrations, Enterprise Applications), App Configuration, Key Vault, Blob Storage, App Services
• Optional experience with:
  • PrimeNG, AG Grid, storybook, ngrx, polly
  • Automated testing in Angular like Jasmine, Cypress and simlar technologies
• Clean Code mindset with understanding of SOLID principles and architectural patterns
• Motivation to constantly work on improving our technical development standards and architectural standards
• Implement and maintain automated testing frameworks
• High agile mindset and experience in agile teams. Open knowledge sharing approach
• Knowledge of the energy sector, especially gas trading is a plus
• Fluent English skills (written and spoken). German is a plus

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 15th of November, 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 Carina Böhle 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! 

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.