Senior Fullstack Developer

About Welvaart

At Welvaart, we create technology solutions that put people at the center.
Our close leadership style and flexible culture of growth empower our teams and elevate the quality of our delivery. We combine rigor, innovation, and empathy to drive projects that transform businesses and build lasting relationships of trust.

We complement this vision with a performance‑driven Digital Marketing offering, helping companies strengthen their visibility, enhance their online presence, and accelerate growth through smart, measurable strategies.

Project

We are seeking a Senior Full Stack Developer with strong expertise in Angular and a high level of autonomy, especially when working on complex frontend integrations, to join an international client project.

Role

• Design, develop, and maintain scalable full-stack applications, with a strong focus on backend architecture and performance.
• Build and optimize modern Angular applications using the latest features (e.g., Signals) while ensuring maintainability and scalability.
• Lead frontend-backend integration, ensuring seamless communication between UI, APIs, and distributed systems.
• Develop robust backend services using latest versions of .NET and C#, following best practices and modern architectural patterns.
• Apply clean architecture, Domain-Driven Design (DDD), and microservices principles to build modular and scalable systems.
• Implement and maintain backend components such as middleware, filters, dependency injection (DI), and pipeline patterns.
• Optimize database interactions using Entity Framework and SQL, focusing on performance and query efficiency.
• Contribute to event-driven and distributed architectures using patterns such as Observer and technologies like Azure Functions, queues, and pipelines.
• Actively identify technical challenges and propose effective, high-quality solutions independently.
• Collaborate with cross-functional teams while maintaining a strong ability to work autonomously.
• Ensure code quality through reviews, documentation, and adherence to engineering best practices.

We are looking for

• 6+ years of experience in full stack development, with strong backend expertise in .NET/C#.
• Proven ability to quickly onboard and work autonomously with minimal supervision.
• Strong experience with Angular (latest versions), including knowledge of new features such as Signals.
• Awareness of Angular's evolution and ability to compare modern vs legacy approaches.
• Experience with micro frontend architectures.
• Solid understanding of modern frontend development (TypeScript, component architecture, state management, performance optimization).
• Deep expertise in .NET and C# (latest versions).
• Strong understanding of design patterns and .NET best practices.
• Experience with:
• Middleware, Filters, and Dependency Injection
• Clean Architecture and DDD
• Microservices architecture
• Pipeline and Observer patterns
• Strong knowledge of database optimization (SQL, Entity Framework, query performance tuning).
• Experience working with cloud-native components such as:
• Azure Functions
• Messaging systems (queues)
• Data pipelines

What you can discover with us?

• Be part of a tech start-up
• Different scopes of project in different sectors
• Structure of fairness and equity salary (Consultant Profile)
• Training & Certification
• Career Path management
• More than 30 Partnerships

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