Microsoft 365 SharePoint Engineer

We are looking for an experienced Microsoft 365 SharePoint Engineer to support a long-term enterprise project in Basel. This is a 3-year contract role with the possibility of extension. The ideal candidate for this role will have strong hands-on experience in administering, maintaining and optimising hybrid SharePoint environments, including on-premise SharePoint Server farms and modern Microsoft 365 / SharePoint Online collaboration platforms. The role requires a strong combination of SharePoint infrastructure administration, monitoring, SPFx frontend integration, workflow automation and performance tuning. Strategic Scope: Architecture, configuration, and custom programmatic extension of local on-premise SharePoint farms and hybrid online site topologies, designing custom workflow structures and localized data compliance record centers. Farm Infrastructure Administration: Install, scale, patch, and manage physical multi-server local SharePoint Server configurations, maintaining system health and high application load performance. Telemetry & Monitoring Oversight: Configure, audit, and analyze ULS (Unified Logging Service) log chains, IIS application traces, and performance counters to identify architectural bottlenecks. Custom Frontend Integration: Program and integrate highly responsive user web interfaces, client extensions, and localized widgets leveraging the modern SharePoint Framework (SPFx) and PnP patterns. Workflow Automation Construction: Model, deploy, and debug complex multi-step document workflow automations, routing validations, and transactional document processing forms. Code Refactoring & Tuning: Analyze custom farm solutions and server-side code assemblies to optimize database read/write queries and maintain rapid page-load execution indexes. Minimum of 3 to 5+ years of hands-on experience in SharePoint administration, SharePoint Server farm management, or Microsoft 365 collaboration platform engineering. Strong experience installing, configuring, patching, scaling and maintaining multi-server SharePoint Server farm environments. Good knowledge of SharePoint Online, Microsoft 365 collaboration services and hybrid SharePoint platform architectures. Experience monitoring and troubleshooting SharePoint environments using ULS logs, IIS traces, performance counters and native diagnostic tools. Hands-on experience developing or integrating responsive SharePoint user interfaces, extensions and web parts using SharePoint Framework (SPFx) and PnP patterns. Experience designing, deploying and troubleshooting document workflows, approval processes, routing rules and automated business forms. Good understanding of SharePoint performance optimisation, including page-load performance, database query behaviour, indexing, caching and custom solution tuning. Ability to analyse, refactor and support custom SharePoint farm solutions, server-side code assemblies and legacy platform components. Strong documentation skills, including the ability to maintain runbooks, configuration guides, technical diagrams and operational procedures. Ability to work independently as well as part of a distributed project team. Languages : Flawless bilingual/native-level business German communications proficiency (C1/C2 level written and spoken) is required. The candidate must present seamlessly in German during the technical panel interview (Anbieterfachgespräch). Swiss Compliance : Must hold EU/EFTA nationality or possess an active, valid Swiss permanent residency/work card (C Permit or unrestricted B/G Permit).