Back End Developer
Vattenfall AB
- Locatie:
- Amsterdam, Noord-Holland
- Startdatum:
- 30 april 2026
- Uren p/w:
- 36 uur p/w
- Looptijd:
- 9 maanden
- Type:
- Interlancing / detachering
- Vakgebied:
- ICT
- Sluitingsdatum:
- 4 mei 2026
Omschrijving opdracht
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; Provide 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 (performance, scalability, cost, 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.
Skills:
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.
Functie-eisen
- .net core 7 jaar
- Azure 7 jaar
- C# 7 jaar
- Docker 7 jaar
- KAFKA 7 jaar
- Kubernetes 7 jaar
Sollicitatieproces
Reageren
- Binnen één werkdag beoordelen we je cv en checken we of je profiel past bij de opdracht.
- We nemen contact met je op om je sollicitatie, beschikbaarheid en motivatie door te nemen.
- Bij een match starten we het traject, bij twijfel laten we dat snel weten.
Aanbieden
- We stellen je voor aan de opdrachtgever.
- Bij interesse volgt een gesprek of een aanvullende uitvraag.
- Tijdens het traject houden we je op de hoogte van elke stap.
Aan de slag
- Na akkoord leggen we de afspraken en vervolgstappen vast.
- Je rondt de onboarding en bevestiging af voor de startdatum.
- Daarna kun je aan de slag op de opdracht.