Software Engineer - .NET (Mid-Senior)

Software Developer - .NET (Mid–Senior) 🚀

📍 Culemborg, Utrecht, Netherlands

💻 Hybrid (Culemborg + Amsterdam office + flexible remote days)

💰 Competitive salary

🌍 EU work rights required - does not sponsor visa

🌟 Building software that supports large-scale, real-world engineering projects

About the company

This is a product-driven software company with 30+ years of experience building mission-critical platforms for complex engineering environments. Their AI-powered data platform brings structure and control to huge volumes of engineering documents, data, and workflows, creating a single, reliable source of truth across the full asset lifecycle.

They work with global players in energy, utilities, infrastructure, renewables, and other asset-heavy industries, helping teams stay compliant, reduce risk, and make better decisions on large, high-impact projects. The focus is on clarity, precision, and software that actually needs to work, no shortcuts.

Technology, engineering, and long-term thinking come together here, in a global yet down-to-earth environment where quality really matters.

You’ll be

• Designing, building, and maintaining backend services in .NET and C#
• Working on business logic, APIs, and integrations used at enterprise scale
• Collaborating closely with product owners, testers, and fellow engineers
• Reviewing code, shaping architecture decisions, and improving development practices
• Troubleshooting issues across development and production environments
• Working in an Agile setup (Scrum), with real ownership over what you build

You’ll bring

• Around 5+ years of experience with .NET (Core / Framework) and ASP.NET Core
• Strong OOP knowledge and a clean-code mindset
• Experience with REST APIs, EF Core, Docker, Git, and PostgreSQL
• Comfort working in Agile teams
• A proactive, collaborative attitude and curiosity to keep learning

Bonus points if you’ve worked with

• Dapper or NHibernate
• Kubernetes, Helm, Terraform
• CI/CD pipelines (GitHub Actions)
• OpenTelemetry or OpenAPI
• IIS or SAML
• Basic frontend knowledge (React, JavaScript, HTML, CSS)

Perks and benefits

• Hybrid working with multiple office locations
• International, technically driven team
• Freedom to shape your role and responsibilities
• Training and professional development opportunities
• A product actively used by global industry leaders

If you enjoy backend work with real-world impact and prefer a hands-on, pragmatic engineering culture, this one is worth a conversation.