Permanent position at Twoday | Copenhagen
Full Stack Developer – Java & Modern Frontend
Twoday is looking for experienced Full Stack Developers to join our Digital Engineering organisation and work with business-critical digital solutions within the Danish healthcare sector.
You will work across backend and frontend development in a complex environment where software quality, integration, security and operational stability are essential.
The role
As a Full Stack Developer, you will contribute throughout the development lifecycle – from technical design and backend services to user interfaces, testing, deployment and production support.
Your responsibilities will include:
Developing and maintaining Java-based backend applications
Developing REST APIs and system integrations
Developing modern frontend applications using JavaScript and TypeScript technologies
Working with Spring and Spring Boot
Integrating frontend applications with backend services and APIs
Working with relational databases and data-driven applications
Developing automated unit and integration tests
Participating in code reviews and technical design
Supporting CI/CD, deployment and production operations
Troubleshooting complex issues across frontend, backend and integrations
Contributing to modernisation and reduction of technical debt
Collaborating with architects, DevOps Engineers, testers and other development teams
Working effectively across organisational and supplier boundaries
What we're looking for
You have:
Strong professional software development experience
Professional Java experience
Experience with Spring and preferably Spring Boot
Strong experience with JavaScript and/or TypeScript
Experience developing REST APIs and integrations
Experience with SQL and relational databases
Experience with modern frontend frameworks
Experience with Git and modern development workflows
Experience with automated testing
Understanding of CI/CD and modern software delivery
Experience from complex enterprise environments
Experience with Docker, Kubernetes, Kafka, messaging, Jenkins, Azure DevOps or Infrastructure as Code is an advantage.
Experience from digital healthcare is highly valued. We are particularly interested in developers who have worked with national healthcare solutions, healthcare integrations, healthcare data or other critical systems within the Danish healthcare sector.
Experience from complex public sector systems and multi-supplier delivery environments is also valuable.
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
At Twoday, you'll join one of the leading technology consultancies in the Nordics. You will be permanently employed by Twoday and work on long-term, business-critical customer engagements while remaining part of our professional engineering community.
We offer challenging projects, strong technical communities, continuous professional development and the opportunity to work with solutions that have significant societal impact.
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.
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.