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Back End Developer
Aanvraagnummer: 39758
Contractvorm: Detachering
Organisatie: Vattenfall AB
Locatie: Amsterdam - Noord-Holland
Uren per week: 36 per week
Tarief: Geen maximum
Duur van de opdracht: 7 maanden
Regio: Noord-Holland
Startdatum: 04-06-2026
Optie tot verlenging: Mogelijk, maar nog niet bekend
Sluitingsdatum: 21-05-2026 Sluit morgen om 12:00
LET OP! Reacties dienen minimaal 1 werkdag voor de sluitingsdatum binnen te zijn voor tijdige verwerking.
LET OP: GEEN ZZP | SCHAAL 10
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; provides remedies to difficulties with the system; debugs and troubleshoots apps.
Role Overview
As a Senior Backend Developer in the Omega team, you will design and deliver scalable, production-ready backend solutions that enable customers to monitor their energy usage. Using .NET and Azure, you’ll build cloud-native systems that drive innovation and business impact. You’ll collaborate closely with developers and stakeholders, contributing across the stack with a hands-on, pragmatic approach.
Key Responsibilities
- Design, build, and maintain backend services using .NET on Azure
- Write clean, maintainable, and well-tested code with proper documentation
- Make informed technical decisions regarding performance, scalability, cost, and reliability
- Implement event-driven architectures for efficient system communication
- Own features end-to-end: discovery, design, development, testing, deployment, and monitoring
- Share best practices in code quality, security, and performance
- Collaborate with cross-functional teams to deliver complete solutions
You’ll also contribute to architectural decisions, balancing business needs with technical excellence, and ensuring solutions are secure, scalable, and future-proof.
About You
- 7+ years of backend development experience
- Strong expertise in .NET Core and C#
- Hands-on experience with Azure (e.g., Functions, Service Bus, Event Grid, Key Vault, App Insights, Container Apps)
- Experience with event-driven architectures and messaging systems (e.g., Kafka)
- Familiar with Infrastructure as Code, CI/CD pipelines, and containers (Docker/Kubernetes)
Key Strengths
- Clear and proactive communication with technical and non-technical stakeholders
- Strong focus on code quality, security, and performance
- Collaborative mindset with DevOps and frontend teams
- Curiosity and creativity in applying new technologies
- Commitment to building impactful, future-oriented solutions
Education
Work experience in the energy sector is preferred but not mandatory.
Practical Information
- Office presence (Amsterdam) is needed on 1 or 2 days per week. This is often on Wednesday but can be discussed within the team.
- CV's can be submitted in Dutch and English.
- Dutch speaking is required for this position.