Senior Frontend / Full-Stack .NET Developer

Twoday is the leading digital transformation partner in Northern Europe with a global presence. With approximately 3,000 specialists, we collaborate with some of the most admired private and public organisations to deliver cutting-edge digital solutions. Our expertise spans software engineering, Data & AI, cloud platforms, digital experiences and business applications. We are now looking for a Senior Platform Engineer to help transform a large-scale development and deployment platform from traditional DevOps into a modern AI-assisted and agentic engineering setup. Permanent position at Twoday | Copenhagen Frontend Developer With .NET Experience Would you like to build intuitive, reliable digital solutions that support an important area of the Danish public sector? Twoday is looking for an experienced frontend developer who is also comfortable contributing across the full technology stack. You will join an established development team working on business-critical solutions used by professional users. Your primary focus will be frontend development, but you will also contribute to the .NET backend when needed. Your Responsibilities Develop and maintain modern web applications using Angular and TypeScriptTranslate complex requirements into intuitive and accessible user experiencesContribute to backend development in C# and .NETDevelop and integrate REST APIsWrite automated tests and ensure high code qualityParticipate in code reviews, technical discussions and solution designCollaborate closely with developers, testers and business stakeholdersContribute to CI/CD pipelines and continuous improvement of development practices Your background Strong professional experience with Angular and TypeScriptSolid experience with C# and .NETA frontend-first full-stack profileExperience with REST APIs and automated testingFamiliarity with Azure DevOps, Azure Pipelines and YAMLExperience with OpenAPI and Dapper is an advantageExperience from complex enterprise or public-sector solutions is an advantageFluent spoken and written DanishAble to work full-time onsite in Copenhagen What We Offer At Twoday, you will become part of a strong professional environment where knowledge sharing, collaboration and technical quality are central. You will work on meaningful digital solutions while developing your skills alongside experienced colleagues. 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. About Twoday Twoday operates from modern offices across 30 locations in Norway, Sweden, Denmark, Finland, and Lithuania. We have a strong and unique social environment with highly engaged employees. If you are the candidate we are looking for, you will play a central role with exciting opportunities to grow within an international and innovative group, working on cutting-edge technology and software solutions. You will also have the flexibility to occasionally work from one of our main offices in Oslo, Stockholm, Copenhagen, Helsinki or Vilnius. Diversity & inclusion Do you not meet all the requirements? Studies show that women and minorities are less likely to apply for a job if they don’t meet every qualification. At Twoday, we are committed to building a workplace and community where everyone is welcome. If you are excited about this role but your previous experience doesn’t perfectly align with the job description, we still encourage you to apply.