Senior Frontend 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 – Digital Health At Twoday, we help organisations create lasting value through technology. We are looking for an experienced Frontend Developer to join our Digital Engineering organisation and work with business-critical digital solutions within the Danish healthcare sector. You will become part of a large-scale development environment where several teams and suppliers collaborate on secure, stable and long-lived solutions used across the healthcare sector. The role As a Frontend Developer, you will develop and maintain modern web applications and user interfaces while working closely with backend developers, architects, testers and DevOps Engineers. Your Responsibilities Will Include Developing and maintaining modern web applications and user interfacesTranslating business and user requirements into robust frontend solutionsWorking with modern JavaScript/TypeScript frameworks and component-based architecturesIntegrating frontend applications with REST APIs and backend servicesWorking with state management, design systems and reusable componentsDeveloping automated unit and integration testsImproving performance, accessibility, security and maintainabilityParticipating in code reviews and technical designWorking with Git, CI/CD and automated software deliveryTroubleshooting and maintaining existing applicationsCollaborating across teams and suppliers in a complex delivery environment You Have What we're looking for Strong professional experience with frontend developmentStrong JavaScript and/or TypeScript experienceExperience with modern frontend frameworksExperience developing applications that integrate with REST APIsExperience with automated testing and modern quality practicesExperience with Git and modern development workflowsUnderstanding of web security, accessibility and performanceExperience working in agile development teamsA structured approach to maintainable and well-tested software Experience with CI/CD, Docker, OpenID Connect/OAuth2 or other identity and access technologies is an advantage. Experience from digital healthcare is highly valued, particularly experience with national healthcare solutions, healthcare integrations, healthcare data or other business-critical systems within the Danish healthcare sector. Experience from complex public sector environments and multi-supplier delivery organisations is also an advantage. Fluent Danish, both written and spoken, is required. You must be able to work onsite at the customer location in Copenhagen when required, which may include five days per week. What We Offer You will join Twoday as a permanent employee and become part of a strong professional community across software engineering, architecture, cloud and data. You'll work on long-term, business-critical customer engagements while continuing to develop your expertise within Twoday's engineering community. 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.