Net Developer

Join Keystone Solutions as a consultant for a full-stack .NET assignment with our client. As a .NET Developer, you will translate the needs and requirements of the client into technical, user-friendly applications. You will be responsible for the (functional)/technical analysis and software development. You will contribute to the ongoing development of the clients e-portal where citizens and care facilities can interact with the clients department. The e-portal is a fully in-house developed platform. All responsibilities are performed as a Keystone Solutions consultant, working closely with the clients teams., * Translate client needs and requirements into technical, user-friendly applications.

• Take ownership of (functional)/technical analysis and software development.
• Contribute to the further expansion of the clients e-portal used by citizens and care facilities for interactions with the clients department (a fully in-house developed platform).
• Perform these responsibilities under Keystone Solutions consultancy model in close collaboration with client stakeholders., * Consultancy Nature of Work: Operate as a Keystone Solutions consultant embedded with the client, collaborating on-site or in a hybrid setup with their teams while benefiting from Keystone s community and support.
• Dynamic Projects: Tackle diverse challenges across different client initiatives, broadening your exposure to architectures, frameworks, and domains.
• Turbo-Charged Learning and Development: Access continuous learning, knowledge-sharing, and mentorship through Keystone Solutions to accelerate your growth in full-stack .NET, SPA frameworks, and modern cloud-aligned practices.
• Ambition Skyrocketing within a Consultancy Framework: Build a high-impact career through varied client engagements, progressively taking on more responsibility, ownership, and technical leadership.

Keystone Solutions Values in Action:

• Excellence and craftsmanship: Deliver robust, secure, and maintainable solutions that stand the test of time.
• Collaboration and empathy: Partner closely with client stakeholders and teammates to achieve successful outcomes.
• Integrity and accountability: Take ownership from analysis to delivery, honoring commitments and quality standards.
• Curiosity and growth mindset: Embrace continuous improvement, knowledge-sharing, and modern best practices.

Role-Specific Impact as a Consultant:

• Apply full-stack .NET expertise (.NET 6+, ASP.NET MVC 5, React or similar) to deliver impactful features across SPA front-ends and API back-ends.
• Leverage CQRS (via MediatR) and DDD fundamentals to structure scalable, maintainable solutions tailored to client needs.
• Contribute to secure, data-driven applications using relational techniques (SQL, ERD) and modern platform capabilities, including YARP where applicable.
• Shape the client s e-portal capabilities through end-to-end responsibility, from functional/technical analysis to high-quality delivery.

Do you have experience in SQL?, Do you have a Master's degree?, * Expert Full-Stack Developer Most recent experience

• CQRS (via MediatR in .NET) Level: Junior

• DDD (Domain Driven Design) Level: Junior

• Knowledge of .NET 6+ Level: Confirmed

• Knowledge of ASP.NET MVC 5 Level: Confirmed

• Knowledge of React (or similar front-end framework e.g., Vue, Angular) Level: Confirmed

• Senior Full-stack .NET developer with minimum 6 years of experience

• YARP Level: Junior

• At least 5 years of experience as a .NET developer in a Microsoft .NET environment and a bachelor s or master s degree in computer science

• At least 2 years of experience developing a SPA front-end and API back-end in .NET Core

• Preferably knowledge of modern databases and relational data management techniques (SQL, ERD)

• Familiar with application security

• Team player who enjoys collaborating with colleagues to successfully complete projects

• Creative with a strong sense of responsibility; you take initiative to deliver high-quality solutions

• In addition to Dutch, you have passive knowledge of English

• Role: Expert Application Developer Most recent experience: Any time

• .NET development in Microsoft .NET environment Level: Confirmed Most recent experience: Any time

• .NET 6 and higher Level: Expert Most recent experience: Any time

• ASP .NET MVC 5 Level: Confirmed Most recent experience: Any time

• CQRS (via MediatR in .NET) Level: Junior Most recent experience: Any time

• DDD (Domain Driven Design) Level: Junior Most recent experience: Any time

• React Level: Confirmed Most recent experience: Any time

• Senior Full-stack .NET developer Level: Confirmed Most recent experience: Any time

• SPA front-end and API back-end in .NET Core Level: Junior Most recent experience: Any time

• SQL, ERD Level: Junior Most recent experience: Any time

• YARP Level: Junior Most recent experience: Any time

• Languages Dutch: Active knowledge

• Languages English: Passive knowledge

• Languages French: Active knowledge