Senior Fullstack Engineer

About the Company At Avaron, you get the security of permanent employment combined with the variety of working at different customers. We place specialists across everything from tech, IT and industry to project management and business support – and whatever the assignment, you have a consultant manager who is there for you and your development. About the Role You will help shape a digital hub that brings store planning, inspiration and commercial insight together in one experience for a global retail environment. The goal is to make it easier for coworkers to explore planning ideas, understand store performance and move from concept to execution without jumping between disconnected systems. This is a hands-on full-stack role in an established product team where the work spans both frontend and backend. You will contribute to capabilities such as interactive planning views, content-driven pages, integrations with planning tools and insight features that combine data from several sources. It is a strong opportunity for you if you enjoy building coherent products across the full stack and want to influence how planning data and user experience come together. Job DescriptionYou will build production-ready features as vertical slices, from API and integrations through to user-facing UI. You will connect planning tools, headless CMS content and commercial insight data into one consistent user experience. You will develop React and TypeScript interfaces that support component-driven and UX-led product development. You will create and evolve Node.js and TypeScript services, including backend-for-frontend patterns and OpenAPI-based interfaces. You will work closely with product, UX and technical specialists to keep the hub useful, connected and easy to work with. You will contribute to a clean information flow between systems and build on the architecture already taking shape. You will help ensure accessibility, performance, secure application design and modern engineering practices across the solution. RequirementsYou have genuine full-stack capability and are comfortable delivering React and TypeScript UI together with Node.js and OpenAPI-based services in the same assignment. You have solid knowledge of the web landscape, including consuming and producing REST and OpenAPI services. You have experience with component-driven UI development and design systems. You have worked with CSS and Styled Components. You have experience with state management and UX-driven development using Figma. You have knowledge of accessibility standards such as WCAG. You have experience with build tooling and performance optimisation. You have worked with Node.js and TypeScript in backend or backend-for-frontend solutions. You have experience of REST API design and documentation using OpenAPI or Swagger. You have worked with headless CMS solutions. You have experience with database technologies and SQL. You understand information flow between systems and can adapt to an existing architecture and build on it. You have experience with cloud-hosted applications and containerised environments. You understand authentication, authorisation and secure application design. You are familiar with Infrastructure as Code and modern engineering practices. Nice to haveExperience with 3D visualisation technologies such as Three.js, React Three Fiber or Autodesk APS. Experience with dynamic page rendering in headless CMS environments. Experience working with AI-assisted solutions and integrations. Familiarity with event-driven architectures and observability tooling. Experience from retail planning or commercial planning environments. Knowledge of Java or C# as additional languages. What We OfferPermanent employment at Avaron AB Occupational pension Wellness allowance of SEK 5,000 per year Application Selections are made on an ongoing basis – apply as soon as you can.