Senior Back-End Developer

If equal pay applies to the assignment, please refer to the collective bargaining agreements listed below and the corresponding pay scale applicable to this role. Suppliers must take this into account in advance when determining the rate. Retroactive rate adjustments based on these collective bargaining agreement provisions will not be accepted.

• PLB collective agreement: PLB Collective Agreement for Production and Supply Companies – FNV
• Vattenfall company collective agreement: Vattenfall Company Collective Agreement 2025-2026
• The position in this request falls within scale: 10. Assingment: 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. Vattenfall, a leading Northwestern European energy provider, seeks a Medior/Senior .NET Backend Developer for a Contact Center application. The role focuses on designing, developing, and maintaining scalable backend solutions in Azure, ensuring high-quality code aligned with enterprise standards. Collaboration with solution designers and engineers in an agile setting is required. This role is for a Genesys Cloud. An application has been built to support this is called Genesys Power Tools which is used currently in several countries (Netherlands, Sweden and Germany). The candidate with work closely together with an other .Net developer. Furthermore, there are two solutions designers in the team.