.NET Developer (Mid-Sr level with DB focus)

About Assai

Assai Software Services B.V. is a leading provider of engineering document and information management solutions for complex capital projects in energy, infrastructure, and industrial sectors. With over three decades of experience and global clientele, our secure and scalable platform supports major enterprises in managing documentation across the full asset lifecycle.

With our headquarters in the Netherlands and teams around the world, we are expanding our R&D department to meet the demands of a growing client base and evolving product roadmap.

The Role

We are looking for a .NET Developer (Mid-Sr. Level) with focus on databases to strengthen our development team in Culemborg. As part of a cross-functional Agile team, you will contribute to the development and enhancement of our cloud-based platform. You’ll write clean, maintainable code, collaborate with team members, and have the opportunity to grow your technical skill set through exposure to modern architectures and tools.

Key Responsibilities

• Design, develop, and maintain back-end components using .NET and C#.

• Collaborate with product owners, testers, and other developers to deliver high-quality features.

• Implement business logic, RESTful APIs, and integrations with external systems.

• Participate in daily stand-ups, sprint planning, and code reviews.

• Contribute to continuous improvement of development practices and product architecture.

• Troubleshoot and debug application issues in development and production.

Working Conditions

Assai Software Services offers a diverse and flexible job in a growing international organization with good future perspectives. At work, we have an informal culture with a team spirit and hands-on environment, where good employment conditions apply. Assai is an innovative organization where you have the opportunity to shape your own tasks and responsibilities, taking the organization's objectives into account. The job takes place in our Dutch office, and we are looking for a full-time employee (40 hours).

Additional Information

• A collaborative, technically driven team environment
  ✔ Competitive salary and secondary benefits
  ✔ Opportunities for professional development and training
  ✔ Hybrid work policy (office in Culemborg + Office in Amsterdam + flexible remote days)
  ✔ Impactful work on a product used by global industry leaders

Our Values

We foster empowerment and like to stimulate a ‘can do’ mentality by also being supportive of each other and our customers. By closely working together, we are continuously looking for improvements, which will support our effectiveness in our roles.

• 5+ years of experience in .NET development (.NET Core, .NET Framework, ASP.NET Core).

• Experience working with REST APIs, Entity Framework Core, Docker, Git.

• Experience and deep understanding of rational databases (PostgreSQL/MS-SQL server).

• Good understanding of object-oriented programming, software design principles, and clean code practices.

• Basic familiarity with front-end technologies (HTML/CSS/JavaScript/React) is a plus.

• Experience with NHibernate, Dapper, unit/integration testing, SAML, GitHub Actions, Kubernetes, Helm Charts, Terraform, Open API, Open Telemetry, IIS is a plus.

• Exposure to Agile development methodologies (Scrum preferred).

• Understanding of version control (Git), unit testing, and CI/CD tools.

• Bachelor’s degree in Computer Science, Software Engineering, or related discipline.

• Willingness to learn, take initiative, and work collaboratively in a team setting.