
Opdrachten
Info
Functie
Sr Backend DeveloperLocatie
Uren per week
40 uren per weekLooptijd
05.04.2026 - 30.12.2026Opdrachtnummer
282768Sluitingsdatum
The Back-End Developer establishes the web development activities that are done at the back end of programs. The Back-End Developer covers server-side web application logic and integration and activities, like writing APIs, creating libraries, and working with system components instead of frontend development, which focuses on customer-facing services and programs. The Back-End Developer focuses on the design effective and efficient solutions by analysing the website's performance demands and goals; Development and administration of Application Programming Interfaces (APIs); Develops data acceptance and storage solutions for websites; Write, test, and maintain development solutions for code-related problems; Identifies new features with developers, designers, and system administrators; Creates a website architecture by utilizing correct product lifecycle approaches, such as Agile Scrum and frameworks; Organizes the system logic; Provide remedies to difficulties with the system; Debugs and troubleshoots apps.
As a Senior Backend Developer in our Business Development team, you will play a key role in driving digital solutions that help us create value for our customers and employees. Your expertise in building enterprise-grade production ready solutions with .NET and Azure will be central to developing and maintaining robust backend applications, enabling innovative customer solutions with lasting impact. Working alongside other backend and front-end developers, as well as business stakeholders, you will apply your experience to design and take a variety of applications into production, ranging from event-driven and messaging-based systems (e.g., Kafka) to cloud-native services on Azure, bringing a flexible, hands-on mindset and the versatility to contribute across different parts of the stack as needed.
Your daily responsibilities include:
Designing, building and maintaining production-ready backend services using NET on Azure and implementing new features and integrations yourself
Produce clean, maintainable code with strong tests, documentation, and sensible patterns
Drive technical decision-making (trade-offs, performance, reliability, cost).
Implementing event-driven architectures that support efficient communication between systems
Sharing your knowledge of best practices in code quality, security and system performance with the team
Collaborating closely with developers and stakeholders to deliver complete solutions, and own features end-to-end: discovery‚ design‚ implementation‚ testing‚ deployment‚ monitoring and debug production issues and improve reliability through code
You will contribute to architectural decisions by applying your technical insight and experience, always considering the needs of both the business unit and our customers. You consider the needs of both the business unit and our customers, and communicate clearly with technical and non-technical stakeholders to build shared understanding and alignment, and come up with designs suited for to the problems. Success in this role means creating secure, high-performing systems that support new business opportunities while helping colleagues grow through open collaboration. By championing quality standards and sharing knowledge openly, you help shape an environment where every solution is stronger because it’s built together.
The team works closely together with other teams and can be described as innovative and progressive. They are trying to implement new things through AI and a candidate should also like to pioneer in this expertise.
Skills:
You thrive in a collaborative environment, where sharing knowledge and learning from others comes naturally. With at least five to ten years of experience as a backend developer, you bring deep expertise (minimal +5 years) in .NET Core and C#, enabling you to design and maintain robust applications that drive business development forward. Your hands-on experience with Microsoft Azure, including Functions, Key Vaults, App Insights, Container Apps, Service Bus and Event Grid, means you are comfortable working with cloud technologies to deliver scalable solutions. You prefer delivering features end to end, from idea to running code in production.
You have worked with event-driven architectures and are familiar with messaging systems such as Kafka or similar platforms. Experience with Infrastructure as Code (IaC), CI/CD pipelines and container technologies like Docker or Kubernetes is essential for ensuring high-quality deployments. You approach challenges thoughtfully, combining technical skill with an open mindset to explore new ideas.
We believe your strengths include:
Communicating clearly and proactively across teams to deliver integrated solutions
Championing best practices in code quality, security and performance by supporting your colleagues
Engaging creatively with new technologies to find practical ways forward
Working together closely with DevOps and frontend specialists to achieve common goals
Sharing your expertise while remaining receptive to diverse perspectives
Developing backend solutions that help our customers and employees —and being energised by teamwork, transparency and driving innovation.
Vattenfall AB
The Back-End Developer establishes the web development activities that are done at the back end of programs. The Back-End Developer covers server-side web application logic and integration and activities, like writing APIs, creating libraries, and working with system components instead of frontend development, which focuses on customer-facing services and programs. The Back-End Developer focuses on the design effective and efficient solutions by analysing the website's performance demands and goals; Development and administration of Application Programming Interfaces (APIs); Develops data acceptance and storage solutions for websites; Write, test, and maintain development solutions for code-related problems; Identifies new features with developers, designers, and system administrators; Creates a website architecture by utilizing correct product lifecycle approaches, such as Agile Scrum and frameworks; Organizes the system logic; Provide remedies to difficulties with the system; Debugs and troubleshoots apps.
As a Senior Backend Developer in our Business Development team, you will play a key role in driving digital solutions that help us create value for our customers and employees. Your expertise in building enterprise-grade production ready solutions with .NET and Azure will be central to developing and maintaining robust backend applications, enabling innovative customer solutions with lasting impact. Working alongside other backend and front-end developers, as well as business stakeholders, you will apply your experience to design and take a variety of applications into production, ranging from event-driven and messaging-based systems (e.g., Kafka) to cloud-native services on Azure, bringing a flexible, hands-on mindset and the versatility to contribute across different parts of the stack as needed.
Your daily responsibilities include:
Designing, building and maintaining production-ready backend services using NET on Azure and implementing new features and integrations yourself
Produce clean, maintainable code with strong tests, documentation, and sensible patterns
Drive technical decision-making (trade-offs, performance, reliability, cost).
Implementing event-driven architectures that support efficient communication between systems
Sharing your knowledge of best practices in code quality, security and system performance with the team
Collaborating closely with developers and stakeholders to deliver complete solutions, and own features end-to-end: discovery‚ design‚ implementation‚ testing‚ deployment‚ monitoring and debug production issues and improve reliability through code
You will contribute to architectural decisions by applying your technical insight and experience, always considering the needs of both the business unit and our customers. You consider the needs of both the business unit and our customers, and communicate clearly with technical and non-technical stakeholders to build shared understanding and alignment, and come up with designs suited for to the problems. Success in this role means creating secure, high-performing systems that support new business opportunities while helping colleagues grow through open collaboration. By championing quality standards and sharing knowledge openly, you help shape an environment where every solution is stronger because it’s built together.
The team works closely together with other teams and can be described as innovative and progressive. They are trying to implement new things through AI and a candidate should also like to pioneer in this expertise.
Skills:
You thrive in a collaborative environment, where sharing knowledge and learning from others comes naturally. With at least five to ten years of experience as a backend developer, you bring deep expertise (minimal +5 years) in .NET Core and C#, enabling you to design and maintain robust applications that drive business development forward. Your hands-on experience with Microsoft Azure, including Functions, Key Vaults, App Insights, Container Apps, Service Bus and Event Grid, means you are comfortable working with cloud technologies to deliver scalable solutions. You prefer delivering features end to end, from idea to running code in production.
You have worked with event-driven architectures and are familiar with messaging systems such as Kafka or similar platforms. Experience with Infrastructure as Code (IaC), CI/CD pipelines and container technologies like Docker or Kubernetes is essential for ensuring high-quality deployments. You approach challenges thoughtfully, combining technical skill with an open mindset to explore new ideas.
We believe your strengths include:
Communicating clearly and proactively across teams to deliver integrated solutions
Championing best practices in code quality, security and performance by supporting your colleagues
Engaging creatively with new technologies to find practical ways forward
Working together closely with DevOps and frontend specialists to achieve common goals
Sharing your expertise while remaining receptive to diverse perspectives
Developing backend solutions that help our customers and employees —and being energised by teamwork, transparency and driving innovation.
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