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Senior Technical Lead

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Littlefish
Full Time position
Listed on 2026-10-18
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support, Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 70000 - 110000 GBP Yearly GBP 70000.00 110000.00 YEAR
Job Description & How to Apply Below
Senior Technical Lead Come and join the Field and Onsite Services team at the Littlefish Group

Work location:

Customer Site (Onsite)

Salary:
Competitive, plus excellent benefits

Here at Littlefish, we’re passionate about delivering outstanding user experiences and exceptional IT services for our customers. As we continue to grow, we’re looking for an experienced Senior Technical Lead to join our Workplace Services team.

This is a unique opportunity for a highly skilled technical specialist to become the most senior technical authority within one of our customer environments. You’ll work closely with onsite support teams, acting as the go-to expert for complex endpoint, device, operating system and identity-related issues across both Windows and Mac estates.

If you’re passionate about troubleshooting, technology, continuous improvement and providing expert technical guidance, we’d love to hear from you.

The role and what you’ll be getting up to on a day-to-day basis

As a Senior Technical Lead, you’ll provide advanced technical expertise across endpoint technologies while acting as a trusted adviser to both users and technical teams.

You’ll:

  • Lead the diagnosis and resolution of complex Windows and Mac endpoint issues.
  • Take ownership of technically challenging incidents from investigation through to resolution.
  • Perform advanced troubleshooting across hardware, operating systems, applications, identity, authentication and connectivity.
  • Analyse logs, system behavior and diagnostic data to identify root causes and recommend solutions.
  • Work closely with specialist resolver groups to progress and resolve complex technical issues.
  • Provide authoritative technical guidance and evidence-based recommendations to customers and stakeholders.
  • Support Microsoft 365, Entra  Active Directory environments.
  • Manage complex endpoint activities including builds, rebuilds, migrations, deployments and upgrades.
  • Troubleshoot device compliance, security, software deployment, certificate and policy-related issues.
  • Utilize endpoint management platforms including Microsoft Intune, Configuration Manager and Jamf.
  • Assess technical risks and ensure changes are implemented in line with security and operational standards.
  • Produce high-quality technical documentation, troubleshooting guides and knowledge articles.
  • Contribute technical expertise to projects, technical investigations and service improvement initiatives.
  • Stay up to date with modern workplace technologies, endpoint management practices and security trends.
We need a candidate with
  • Significant experience providing advanced onsite or endpoint technical support within enterprise environments.
  • Strong hands-on experience supporting both Windows and macOS devices.
  • Advanced knowledge of Microsoft 365, Entra  Active Directory.
  • Strong experience managing Windows devices using Microsoft Intune, Configuration Manager or similar platforms.
  • Strong experience supporting Apple devices through Jamf or equivalent Apple device management solutions.
  • Experience diagnosing and resolving complex endpoint issues involving authentication, compliance, software deployment, device performance and security policies.
  • Strong understanding of endpoint security principles, compliance controls and secure device management.
  • Experience investigating technical issues using logs, diagnostic data and system analysis.
  • Ability to assess technical options and provide clear recommendations while identifying associated risks and dependencies.
  • Experience collaborating with infrastructure, security, application and third-party support teams.
  • Strong documentation skills with experience creating technical records, troubleshooting guides and knowledge articles.
  • Experience working with Service Now or a similar IT Service Management…
Position Requirements
10+ Years work experience
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