Mid-level Fullstack Software Engineer position in Copenhagen. Responsibilities include leading mid-sized projects, collaborating in a cross-functional team, planning and releasing new features, troubleshooting software, and making data-driven decisions. Requires experience in full-stack web development, cloud services, RESTful APIs, and component-based front-end development (preferably React). Offers competitive salary, bonus, 25 days holiday (plus 5 after 1 year), paid volunteering days, health package, pension, and access to learning resources. Flexible working options available.