Senior Technician Application Support

Antal International Network; London Borough of Hillingdon; On-site; Confidential; Full time

Job summary

A specialist IT consultancy is seeking a Senior Technician Application Support to maintain and troubleshoot critical systems in Northwood, UK. Applicants must have over 5 years of relevant system administration experience and possess valid DV or CTS clearance. Strong skills in SQL and a background in large-scale IT environments are essential for this role. Competitive contract work available.

Qualifications

• 5+ years in system administration across Windows and UNIX/Linux environments.
• Strong experience with large-scale, service-oriented IT environments.
• Hands-on knowledge of IT hardware and peripherals.

Responsibilities

• Administer, maintain, and troubleshoot Command & Control systems.
• Install, configure, and support servers across multiple environments.
• Deliver hands-on system support including preventive maintenance.

Skills

System administration

IT support experience

SQL proficiency

Windows environments

UNIX/Linux environments

Education

Relevant IT training or certifications

Job description

Senior Technician Application Support (DV or CTS Cleared) - Windows, Linux, Unix, SQL


Location:Northwood, UK.
Role Type:Contract

Our client, a specialist IT consultancy focussing on Defence and Government projects, are seeking for a Application Support Engineer to support their clients critical infrastructure in Northwood, UK.

Successful candidates will be expected to have experience working in international environments, ideally in the government, military or defence space.

It is also crucial that applicants have valid DV or CTS clearance.

Key Responsibilities:

• Administer, maintain, and troubleshoot Command & Control (C2) and situational awareness systems
• Install, configure, and support servers across multiple operational environments
• Execute application testing and deployment at both server and user level
• Deliver hands-on system support including preventive maintenance and fault resolution
• Set up and support hardware in dynamic, sometimes challenging locations
• Ensure accurate documentation, configuration control, and asset tracking
• Collaborate closely with internal teams and service desks for technical support
• Stay current on tech trends and assist with beta testing of new system releases

Essential Skills & Experience:

• 5+ years in system administration across Windows and UNIX/Linux environments
• Strong experience with large-scale, service-oriented IT environments
• Proficient in SQL and database administration principles
• Hands-on knowledge of IT hardware, peripherals, and desktop applications
• Experience in Incident, Problem, Configuration, and Asset Management
• Background in customer-focused IT support roles
• Relevant IT training or certifications in enterprise systems

Desirable:

• ITIL Foundation certification or knowledge
• Experience in international/multinational technical teams
• Exposure to mainstream ICT systems and practices

Upload your resume and our tool will compare it to the requirements for this job like recruiters do.