Senior Fullstack Engineer

About Justera Group Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden. About the Role: We are looking for a Senior Fullstack Engineer to join an exciting digital development team working on solutions that support store planning and commercial planning for a large international organisation. In this role, you will work across both frontend and backend development, building a new digital hub that brings together planning tools, data, insights, and content into one seamless user experience. You will be responsible for delivering features end-to-end, from APIs and integrations to user-facing interfaces. This is a great opportunity for an experienced fullstack engineer who enjoys working across the stack, collaborating closely with product and UX teams, and taking ownership of production-ready solutions. Key Responsibilities: Develop and deliver production-ready features across both frontend and backend Build responsive and user-friendly interfaces using React and TypeScript Develop backend services and integrations using Node.js and TypeScript Design, develop and consume REST APIs and OpenAPI services Connect data, planning tools and content from different systems into a coherent user experience Work with databases and SQL to support application functionality and data flows Build component-driven interfaces and contribute to design systems Collaborate closely with Product, UX and engineering teams to develop solutions based on user needs Work with existing architecture and contribute to its continuous improvement Contribute to secure, scalable and cloud-based applications Requirements: Strong professional experience in fullstack development Solid hands-on experience with React and TypeScript Strong experience with Node.js and TypeScript Good knowledge of REST APIs and OpenAPI / Swagger Experience with database technologies and SQL Experience integrating different systems and working with data flows Experience with component-driven UI and design systems Experience with cloud-hosted and containerised applications Understanding of authentication, authorisation and secure application design Familiarity with Infrastructure as Code and modern software engineering practices Strong problem-solving skills and ability to work independently Excellent communication and collaboration skills Comfortable working closely with Product and UX teams Nice to have: Experience with Three.js, React Three Fiber, Autodesk APS or similar 3D technologies Experience with headless CMS solutions such as Contentful Experience with dynamic page rendering Experience with event-driven architectures Experience with observability tooling Experience with AI-assisted development or AI integrations Experience within retail, store planning or commercial planning What We Offer: A dynamic and innovative workplace driving advancements in cutting-edge robotic technologies The opportunity to collaborate with talented cross-functional teams on meaningful and impactful projects Competitive compensation and comprehensive benefits package A supportive culture that fosters continuous learning, growth, and professional development Flexible hybrid working model for an optimal work-life balance 25 days of annual leave to recharge and relax An annual wellness allowance of 3,500 SEK to support your health and wellbeing