Lead .NET Developer

About Twoday

Twoday is the leading digital transformation partner in Northern Europe with a global presence. With approximately 3,000 technologists, we collaborate with some of the most recognised private and public organisations to deliver cutting-edge digital solutions. Our deep industry expertise spans Data & AI, software development, digital experiences and business applications.

Our team operates across the Nordics and Lithuania, supporting more than 8,000 customers on their digital transformation journeys.

Lead .NET Developer – Public Sector Solutions

Do you want to take technical ownership of solutions that make a real societal impact?

We are looking for an experienced Lead .NET Developer to join Twoday as a permanent employee, working on a long-term project with a public client.

This is a hands-on technical leadership role where you will help shape and evolve business-critical public sector solutions. You will work closely with developers, architects and stakeholders while contributing directly to the codebase and technical direction of the solution.

You will become part of a highly skilled team where quality, maintainability and collaboration are central to everything we do.

Your responsibilities as a Lead .NET Developer will include:

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Taking technical ownership of the solution and contributing to architectural decisions

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Designing, developing and maintaining backend solutions in C#/.NET

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Driving technical quality through code reviews, best practices and mentoring

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Working with APIs, integrations and complex system landscapes

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Collaborating with architects, business stakeholders and development teams

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Participating in analysis, estimation and planning activities

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Identifying opportunities for technical improvements and modernisation

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Supporting the team in delivering robust, scalable and maintainable solutions

Your qualifications

We are looking for someone who combines strong technical skills with the ability to guide and support other developers.

We expect that you

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Have extensive experience working with C# and .NET

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Have a strong background in backend development

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Have experience designing and implementing APIs and integrations

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Have worked with complex systems and enterprise-scale applications

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Have experience taking technical responsibility within a development team

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Understand architecture, performance, security and maintainability

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Thrive in agile environments and enjoy collaborating across disciplines

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Are fluent in Danish, both spoken and written

It is an advantage if you also have experience with

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Azure or other cloud platforms

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CI/CD and automated testing

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Public sector solutions or other regulated environments

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Modernisation of legacy systems

As a person

You are

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Technically strong and quality-oriented

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Pragmatic and solution-focused

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Comfortable making technical decisions and taking ownership

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A supportive team player who enjoys knowledge sharing

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Motivated by building stable solutions that deliver long-term value

Employment

You will be employed by Twoday and work on a project with a public client.

At Twoday, you will be part of a strong professional community with excellent opportunities for professional development, knowledge sharing and long-term career growth.

Language requirements

Fluent Danish, both written and spoken, is required.

Location

The role is primarily onsite in the Copenhagen area.

What we offer

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Permanent employment with Twoday

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Opportunity to work on meaningful, high-impact public sector solutions

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Professional development in a strong technical environment

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A collaborative and supportive team culture

If you are interested in contributing to impactful healthcare solutions and working closely with a key public sector client, we would love to hear from you.

The process

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Telephone interview with a Talent Acquisition Partner

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Teams interview with hiring manager

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Technical assessment

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Onsite interview with hiring manager

About Twoday

Twoday has modern offices in more than 30 locations across Norway, Sweden, Denmark, Finland and Lithuania. We offer an engaging work environment with high professional standards and a strong sense of community. With us, you will have the opportunity to develop both professionally and personally in an international and innovative organisation.

Diversity & Inclusion

Don’t meet every requirement? Studies show that women and other underrepresented groups are less likely to apply unless they meet every qualification. At Twoday, we are committed to building an inclusive workplace, and we encourage you to apply if the role interests you – even if your experience does not match the job description perfectly.