Senior SharePoint Front-end Developer (f/m/x)

We are looking for an experienced SharePoint Front-end Developer to join our team and work on innovative solutions for SharePoint Online. In this role, you will be responsible for developing and maintaining the frontend layer of a Knowledge Base using SharePoint Online, collaborating with backend teams and analysts to ensure high-quality and efficient solutions. If you are passionate about creating impactful SharePoint applications, this opportunity may be the right fit for you. Your tasks Developing and maintaining the frontend layer of a Knowledge Base based on SharePoint OnlineDesigning and implementing SPFx and React componentsIntegrating with Microsoft 365 services and internal system APIsCollaborating with backend teams, analysts, and UX designersEnsuring the quality, performance, and usability of the solution Requirements Minimum 5 years of experience in creating SharePoint Online solutions using SPFx, React, and TypeScriptVery good knowledge of PnP SPFx Controls, PnPJs, Fluent UI, and Microsoft Graph APIExperience in creating Web Parts, forms, and business components for SharePoint OnlineExperience in integrating applications with REST APIsFamiliarity with Git and CI/CD processesAdvanced level of Polish and residence in PolandIntermediate level of English Nice to have Knowledge of TanStack Query, Redux Toolkit, or ZodExperience with Power PlatformExperience in intranet projects, knowledge portals, or SharePoint Online-based solutions Job no. JOB-P9DLY Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws. Benefits For You Great Place to WorkSolid financial situationContracts with the biggest brandsCentre of internal trainingsMany experts you can learn fromOpen and accessible management teamProfit sharingPassion Sponsorship programRegular integration events and tripsComfortable and well-equipped officesMySii appMedical care