Mid-level .NET Developer

Permanent position at Twoday | Copenhagen Mid-level .NET Developer Are you a .NET developer with a minimum of two and up to to five years of professional experience who would like to broaden your skills across the technology stack? Twoday is looking for a curious developer who enjoys building software and has not limited themselves to either frontend or backend.

This is a mid-level development role without senior, lead or architecture responsibility. You will join an experienced team where you can contribute independently while continuing to develop your technical skills.

Your Responsibilities

• Develop and maintain solutions using C# and .NET
• Contribute to both frontend and backend development
• Develop and integrate REST APIs
• Write automated tests and participate in code reviews
• Troubleshoot and improve existing applications
• Collaborate with developers, testers and business stakeholders
• Contribute to CI/CD and continuous improvement
• Use AI-assisted development tools critically and responsibly

Your background

• A minimum of two and up to approximately five years of professional C# and .NET experience
• Motivation to work across different parts of the technology stack
• Experience with REST APIs and relational databases
• Familiarity with automated testing and version control
• Frontend experience with Angular, React, Vue or TypeScript is an advantage
• Experience with Azure, Azure DevOps or CI/CD is an advantage
• A curious and constructive approach to AI-assisted development
• Fluent spoken and written Danish
• Able to work full-time onsite in Copenhagen

What we offer At Twoday, you will become part of a collaborative professional environment focused on knowledge sharing, technical quality and continuous learning. You will work alongside experienced colleagues and have the opportunity to broaden your skills through meaningful development tasks.

The position is a permanent role at Twoday, working full-time onsite with one of our public-sector customers in Copenhagen.

Interested? We look forward to receiving your application.

Working at Twoday Twoday is a leading technology consulting company specializing in applied AI and advanced engineering. With around 2,300 experts in AI, data, digital engineering, and cloud engineering, we cut through complexity, remove uncertainty, and prove the value of technology.

Our purpose is to create a better tomorrow through AI and technology. We strengthen private and public organizations across energy and utilities, financial services and insurance, industrials and manufacturing, health and life sciences, and government.

However, our greatest strength isn't the technology we work with. It's the people behind it. Every day, they bring together expertise, curiosity, and determination to help our customers solve complex challenges and create lasting value.

Diversity and inclusion We are committed to building an inclusive and diverse workplace where everyone is treated with respect and has equal opportunities. Our recruitment decisions are based on competencies, experience, and individual merit.

Don’t meet all the requirements? Many candidates hesitate to apply unless they meet every qualification. We are looking for people who are engaged, meet most of the criteria, and are motivated to grow in the role. If this role interests you and you believe you could be a good fit, we encourage you to apply.