diagnostic technician Work, Jobs in london, gtl (with Salaries)

Level 3 Support Technician
CST Training LTD —Bexley
- £28,000 - £35,000 a year
- AWS
- JavaScript
- Travel
Quick apply
17h
Junior IT Support Technician
SBITSL —London
- £26,500 a year
- Full-time
- Customer service
- English
- Analysis skills
Quick apply
4d
Senior Technician Technical Services
Chelsea and Westminster Hospital NHS Foundation Trust —London
- £36,943 - £44,900 a year
- Weekend availability
- Communication skills
5d
2026 Data Center Technician Intern
Amazon UK Services Ltd. —London
- Weekend availability
- AWS
- Bachelor's degree
- Computer networking
13d
Research Technician - Part-time - 0.8 FTE
University College London —London
- £36,433 - £41,833 a year
- Part-time
- Doctoral degree
- Master's degree
- University
- Annual leave
- Employee assistance programme
20h
1st Line Technician
Cyan Consultancy Ltd —London
- £30,000 a year
- Microsoft Word
- Microsoft Excel
- Azure
Quick apply
Roadside Technician - Shepherd's Bush
RAC —London
- £41,600 - £66,000 a year
- Overtime
- In-person
- Automotive diagnostics
Bus & Coach Technician Apprentice - Brixton
GTG —London
- School
Roadside Technician - Mayfair
RAC —London
- £41,600 - £66,000 a year
- Overtime
- In-person
- Automotive diagnostics
Ophthalmic Technician
Clinica London Ltd —London
- £34,250 - £35,250 a year
- Full-time
- Anatomy knowledge
- Patient care
- Organisational skills
Quick apply
13d
Apprentice Autocare Technician
GTG —London
- Full-time
- Driving
Mobile Vehicle Technician - Shepherd's Bush
RAC —London
- £45,370 - £57,000 a year
- Overtime
- In-person
- Automotive diagnostics
- Flexible schedule
Drinks Dispense Tech Apprentice
Anheuser-Busch —London
- Full-time
- Microsoft Office
- IT
- Communication skills
- Employee assistance programme
Apprentice Technician
Vertu Motors —London
- £8 an hour
- Full-time
- Maintenance
- Employee discount
Quick apply
Roadside Technician - Enfield
RAC —Enfield
- £41,600 - £66,000 a year
- Overtime
- In-person
- Automotive diagnostics
Roadside Technician - Barnet
RAC —Barnet
- £41,600 - £66,000 a year
- Overtime
- In-person
- Automotive diagnostics
Robot Delivery Technician
Coco —London
- Full-time
- Schematics
- Maintenance
- Communication skills
Quick apply
4h
Conversion Technician - Light to HGV Technician
Volvo Group —Hayes
- Up to £17 an hour
- Overtime
- Maintenance
- Mentoring
- IT
- Employee discount
Health Care Assistant (HCA)
OCL Vision —London
- £29,000 - £31,000 a year
- Part-time
- Customer service
- Administrative experience
- Travel
- Health & wellbeing programme
- Employee discount
Quick apply
1h
Technician (DLR, Beckton)
CAF Rail UK —London
- £56,000 a year
- Weekend availability
- Automotive diagnostics
- Annual leave

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Level 3 Support Technician

CST Training LTD -
Bexley

Quick apply

Job details

Permanent
£28,000 - £35,000 a year
17 hours ago

Qualifications

TCP
Driving Licence
Bash (Unix shell)
Firewall
DHCP
AWS
Docker
Debian
JavaScript
CompTIA Network+
Computer networking
DNS
IT
Linux
TCP/IP
Communication skills
MySQL
Network Security

Full job description

Position Summary

As a Level 3 Support Technician at CST Training, you will provide advanced technical support across our IT infrastructure, hardware, and network estate. Working closely with the wider IT team, you will tackle escalated issues that go beyond first- and second-line support, take ownership of complex problems, and play a hands-on role in maintaining the systems our employees and learners rely on every day. This role suits an experienced technician who enjoys variety — from diagnosing Linux server issues to terminating Ethernet cables and fixing hardware faults.

Essential Duties & Responsibilities

Provide third-line technical support to CST Training employees and customers, resolving issues escalated from lower support tiers.
Manage and maintain TP-Link Omada network infrastructure, including switches, access points, and controllers.
Administer and troubleshoot Linux servers, including routine maintenance, updates, and incident response.
Manage hosted server infrastructure on platforms such as Hetzner, including provisioning, configuration, and monitoring.
Deploy and manage containerised applications using Portainer.
Administer and maintain MySQL databases, including backups, user management, and basic performance tuning.
Support and manage ChromeOS devices across the organisation.
Diagnose and repair hardware faults across desktops, laptops, and peripheral equipment.
Create, terminate, test, and run Ethernet cabling for new installations and repairs.
Document configurations, procedures, and incident resolutions to build and maintain the internal knowledge base.
Identify recurring issues and recommend long-term solutions to improve system stability.
Work collaboratively with other departments to support IT projects and rollouts

Education, Skills & Experience

Minimum 3 years experience in a third-line or senior support role.
Comfortable with confined spaces and Height
Solid understanding of basic networking concepts (TCP/IP, DNS, DHCP, VLANs, subnetting).
Hands-on experience with Omada or similar managed network platforms (e.g. Ubiquiti, Cisco Meraki).
Practical experience administering Linux servers (Debian, or similar) via the command line.
Experience supporting and managing ChromeOS devices, including the Google Admin Console.
Strong hardware troubleshooting and repair skills across PCs, laptops, and peripherals.
Confident creating and running Ethernet cables, including terminating RJ45 connectors and testing cable runs.
Excellent problem-solving and diagnostic skills.
Strong communication skills, able to explain technical issues clearly to non-technical users.
Ability to manage multiple tickets and prioritise effectively under pressure.

Nice to Haves

Industry certifications such as CompTIA Network+, CompTIA Server+, LPIC-1, or equivalent.
Familiarity with Docker beyond Portainer (CLI, Compose, building images).
Basic understanding of JavaScript and Bash for reading, tweaking, and writing simple scripts.
Experience with hosting platforms such as Hetzner (or DigitalOcean, Linode, AWS EC2) for provisioning and managing remote servers.
Hands-on experience with Portainer for managing Docker containers and stacks.
Working knowledge of MySQL, including basic administration, queries, backups, and user management.
Knowledge of firewall configuration and network security best practices.
Experience working in an EdTech or training environment.
Full UK driving licence (for occasional travel to other sites).

Professional Development

Stay up to date with the latest networking, server, and hardware technologies.
Participate in industry training and certification programs (e.g. CompTIA, Linux Professional Institute, TP-Link, Google).
Receive mentorship from senior IT staff and management.
Contribute to the improvement of IT support processes and infrastructure standards.
Opportunity to progress into specialist roles such as network engineering, systems administration, or IT management.

Career Growth

Advance into senior infrastructure, networking, or systems administration roles.
Specialise in areas such as network architecture, Linux systems engineering, or cybersecurity.
Take ownership of larger infrastructure projects and contribute to technical direction.
Gain recognition as a technical expert within CST Training and beyond.

Physical Demands & Working Conditions

5 Days per week office-based role (Bexley DA5 1JX)
Hands-on work involving lifting and moving IT equipment, including servers, switches, and cabling.
Occasional work in confined spaces (e.g. comms cabinets, ceiling voids, under desks) when running cables or installing hardware.
Use of hand tools for cable termination and minor hardware repairs.
Occasional travel may be required to support other sites.

Pay: £28,000.00-£35,000.00 per year

Work Location: In person

Quick apply

Refine Your Search

diagnostic technician jobs in london, gtl

Level 3 Support Technician

Junior IT Support Technician

Senior Technician Technical Services

2026 Data Center Technician Intern

Research Technician - Part-time - 0.8 FTE

1st Line Technician

Roadside Technician - Shepherd's Bush

Bus & Coach Technician Apprentice - Brixton

Roadside Technician - Mayfair

Ophthalmic Technician

Apprentice Autocare Technician

Mobile Vehicle Technician - Shepherd's Bush

Drinks Dispense Tech Apprentice

Apprentice Technician

Roadside Technician - Enfield

Roadside Technician - Barnet

Robot Delivery Technician

Conversion Technician - Light to HGV Technician

Health Care Assistant (HCA)

Technician (DLR, Beckton)

I want to receive the latest job alerts for diagnostic technician in london, gtl

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