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# Senior Technical Lead

- **Company:** Littlefish
- **Location:** London, United Kingdom
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Apple Mac Systems, User Authentication, Bash Shell, Configuration Management, Systems Analysis, Windows PowerShell, Software Deployment, Diagnostic Tools, Scripting, Microsoft InTune, Information Technology, Casper Suite, Servicenow
- **Published:** October 17, 2026
- **Apply:** https://www.totaljobs.com/job/senior-technical-lead/littlefish-job108190782

## About the Role

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 ID and 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 ServiceNow or a similar IT Service Management platform.
Excellent communication skills with the ability to explain complex technical concepts to both technical and non-technical audiences.
A professional, methodical and customer-focused approach.
Ability to work independently and manage multiple priorities within a fast-paced environment.
If you bring this, you'll stand out
Microsoft, Apple, Endpoint Management or Infrastructure certifications.
ITIL certification.
Experience supporting large-scale enterprise or retail environments.
Experience delivering endpoint migrations and transformation projects.
Knowledge of automation and scripting technologies such as PowerShell, Bash or equivalent.
Experience working within highly regulated or security-conscious environments.
Exposure to modern workplace, device compliance and security frameworks.
Knowledge of Microsoft Defender, conditional access and endpoint security tooling., I care about what I do and bring energy, commitment and positivity to every challenge.
I Have a Can-Do Attitude
I embrace challenges, take ownership and focus on finding solutions.
I am Cyber Conscious
I understand the importance of security and take responsibility for protecting our customers, colleagues and business.
Ready to join us?
If you're an experienced endpoint specialist who enjoys solving complex technical problems and acting as a trusted technical adviser, we'd love to hear from you.

## Description

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 ID and 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