Senior SharePoint Developer

Senior SharePoint Developer Our prestigious US law firm client is seeking a highly skilled Senior SharePoint Developer with extensive experience migrating SharePoint 2016 on-premise solutions to modern SharePoint platforms. This permanent role, based in their stunning City offices, combines hands-on custom development, system maintenance, and intranet design. • Salary to £100,000 • Hybrid working (3 days office / 2 days remote) • Free lunch every Wednesday • Generous employee contribution allowance towards lunch or other expenses Senior SharePoint Developer Key Responsibilities: • Design, develop, and support custom solutions across SharePoint Subscription Edition (SE) and SharePoint Online • Lead migration of SharePoint 2016 on-premise solutions to SE and Online • Build SPFx web parts, extensions, and integrations using TypeScript, JavaScript, React, and REST APIs • Manage updates, patches, and service packs to ensure stability, security, and compliance • Administer service and web applications, site collections, permissions, authentication, and governance • Provide technical leadership and mentor junior team members • Collaborate with project managers, business analysts, and stakeholders to deliver solutions aligned to requirements • Recommend improvements to development standards, governance, and platform architecture Senior SharePoint Developer Skills & Requirements: • Law firm experience highly advantageous • Extensive experience developing and administering SharePoint Subscription Edition (SE) and SharePoint Online, including migration from SharePoint 2016 on-premise • Strong expertise in SPFx development and modern front-end technologies (TypeScript, JavaScript, React, HTML5, CSS3) • Experience integrating SharePoint solutions using REST APIs, Microsoft Graph, C#, and .NET • Hands-on management of on-prem SharePoint environments, including patching, upgrades, performance tuning, and troubleshooting • Experience with Business Connectivity Services (BCS), External Content Types (ECTs), and SQL Server design and optimisation