Senior SharePoint Developer and Administrator

Synaxia Group; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

Synaxia Group is seeking a Senior SharePoint Developer & Administrator in Greater London to lead the modernisation of their SharePoint estate. The role involves migrating from SharePoint 2016 on-prem to SharePoint Online, rebuilding legacy web parts, and providing technical leadership to junior developers. Ideal candidates will possess strong hands-on experience with SharePoint SE and Online, as well as expertise in C#, SQL Server, and RESTful API integrations. This is a unique opportunity to influence platform direction in a prestigious global law firm.

Qualifications

• Strong hands-on experience with SharePoint SE and SharePoint Online.
• Solid on-prem admin background with patching and troubleshooting skills.
• Experience with BCS and ECT considered a strong plus.

Responsibilities

• Lead migration from SharePoint 2016 on-prem to SharePoint Online.
• Rebuild legacy web parts using SPFx with TypeScript and React.
• Administer both on-prem and cloud environments including patching and upgrades.

Skills

C# / .NET

SQL Server

RESTful API integrations

SharePoint SE

SharePoint Online

Business Connectivity Services

External Content Types

Microsoft 365 familiarity

Azure Functions

Job description

If you've spent years navigating the gap between legacy SharePoint environments and where the platform needs to be — and you actually enjoy solving that problem — this role is worth a look.

One of the world's leading law firms are looking for a Senior SharePoint Developer & Administrator to own the modernisation of their SharePoint estate — migrating from SharePoint 2016 on-prem, rewriting legacy web parts, and building out a modern intranet on SharePoint Online. This isn't a ticket-taking role. You'll have real scope, technical depth, and stakeholder exposure.

What you'll be doing

• Leading migration from SharePoint 2016 on-prem to SharePoint SE and SharePoint Online
• Rebuilding legacy web parts using SPFx (TypeScript, React, REST APIs, Microsoft Graph)
• Administering both on-prem and cloud environments — patching, upgrades, governance, DR
• Configuring Business Connectivity Services and External Content Types
• Designing and maintaining the enterprise intranet — architecture, navigation, branding
• Providing technical leadership to junior developers and shaping platform standards

What we're looking for

• Strong hands‑on experience with SharePoint SE and SharePoint Online
• Experience with C# / .NET, SQL Server, and RESTful API integrations
• Solid on‑prem admin background — patching, performance tuning, troubleshooting
• BCS and ECT experience a strong plus
• Microsoft 365 / Azure familiarity (Azure AD, Azure Functions) is a bonus

Why it's worth considering

• Rare opportunity to own a full‑scale SharePoint modernisation at a global law firm
• Broad technical scope — development, administration, integration, and intranet design
• Exposure to senior stakeholders and real influence over platform direction
• A firm that takes its technology estate seriously