IT Technician – Level III

About the role

We are seeking an experienced IT Technician – Level III to join our London office on a three‑month fixed‑term contract, with the possibility of extension. In this senior escalation role you will provide Tier III support, mentor junior staff and help keep the organisation’s IT services running smoothly.

Key responsibilities

• Deliver Tier III technical support for complex hardware, software and system issues.
• Serve as the primary escalation point for help‑desk tickets and senior leadership queries.
• Administer and support Microsoft 365, Okta, Sophos and access‑control platforms.
• Install, configure, image and test laptops, desktops, printers and mobile devices across the corporate environment.
• Oversee help‑desk operations, monitor ticket queues and ensure timely resolution.
• Manage IT asset inventory and lead device deployment, re‑imaging and mobile‑device‑management (MDM) initiatives.
• Train, mentor and support Level I & II technicians.
• Contribute to IT projects and continuous‑improvement activities.

Required profile

• High School Diploma or equivalent.
• Minimum 2 years of corporate IT support experience (3 years preferred).
• Previous experience in a Tier II/III or escalation role.
• CompTIA A+ or similar certification is desirable.
• Ability to lift up to 50 lb and occasional travel between local offices.

Required skills

• Microsoft Windows operating system.
• Microsoft Office Suite.
• Microsoft 365 administration.
• Okta identity management.
• Sophos security solutions.
• Access‑control system administration.
• Hardware installation, imaging and testing.
• Mobile‑device‑management (MDM) tools.
• IT asset inventory management.
• Basic networking concepts.

What we offer

• Experience in a fast‑paced, enterprise‑level IT environment.
• Exposure to modern tools such as Microsoft 365, Okta and Sophos.
• Hands‑on involvement in end‑to‑end IT operations.
• Opportunity to mentor and lead junior team members.