Infrastructure Engineer (SC/DV Cleared) | LA International | South West, United Kingdom

LA International; Hounslow; On-site; GBP 70,000 - 110,000; Full time

Job summary

LA International is seeking an Infrastructure Engineer (SC/DV cleared) to support and maintain secure, mission-critical Microsoft infrastructure within a government/defence setting. The role requires hands-on Windows Server, Hyper-V virtualization, AD/GP administration, and strong patch management capabilities.

The successful candidate will contribute to enterprise productivity solutions, PKI/certificate management, and secure messaging environments while working on a long-term programme on-site

Qualifications

• Active SC or DV Security Clearance (Mandatory).
• Strong experience administering Microsoft Windows Server environments.
• Hands‑on experience with Microsoft Hyper‑V virtualization technologies.
• Experience managing Active Directory and Group Policy.
• Strong knowledge of Microsoft SQL Server administration.
• Experience supporting Microsoft Exchange environments.
• Experience administering WSUS and enterprise patch management solutions.
• Knowledge of PKI, certificates, and secure enterprise infrastructure.
• Experience deploying and supporting Microsoft Office solutions.
• Strong troubleshooting and root‑cause analysis capabilities.
• Experience supporting secure, enterprise‑scale infrastructure environments.
• Excellent documentation and communication skills.

Responsibilities

• Install, configure, administer, and maintain Microsoft Windows Server environments.
• Support virtualized infrastructure built on Microsoft Hyper‑V platforms.
• Manage Active Directory services, including users, groups, policies, and authentication services.
• Configure and support Group Policy Objects (GPOs) across enterprise environments.
• Administer Microsoft SQL Server platforms and related services.
• Support Microsoft Exchange messaging infrastructure.
• Manage Microsoft Skype for Business environments where applicable.
• Administer WSUS and patch management activities.
• Support PKI services and certificate management.
• Deploy, configure, and maintain Microsoft Office and enterprise productivity solutions.
• Monitor system performance and proactively address infrastructure issues.
• Troubleshoot complex server, virtualization, and application-related incidents.
• Maintain infrastructure documentation, configurations, and operational records.
• Ensure compliance with security standards and operational procedures.

Skills

SC/DV Clearance

Windows Server

Hyper-V

Active Directory

Group Policy

SQL Server

Exchange

WSUS / Patch management

PKI / Certificates

Office productivity

Documentation

Security compliance

Tools

Microsoft Hyper-V

WSUS

Active Directory

Group Policy

SQL Server

Exchange

PKI

PowerShell (Nice-to-Have)

Job description

Job Title: Infrastructure Engineer (SC/DV Cleared) | LA International | South West, United Kingdom

Recruiting Company: LA International

Job Location: South West, United Kingdom (Onsite)

Job Type: Contract (Inside IR35)

Security Clearance Required: SC or DV Clearance (Mandatory)

Location: South West, UK

Work Model: 5 Days Per Week Onsite

Contract Duration: Initial Contract Until March 2028

Start Date: Immediate / Quick Turnaround Available

Sector: Government, Defence & Secure Infrastructure

IR35 Status: Inside IR35

Position Summary

LA International is seeking a highly skilled Infrastructure Engineer to support and maintain secure, mission-critical IT environments within a government or defence-related setting. This role is ideal for infrastructure professionals with strong Microsoft server, virtualization, and enterprise platform expertise who already possess active SC or DV security clearance and can contribute immediately to a long-term programme.

Detailed Job Description

As an Infrastructure Engineer, you will be responsible for the installation, administration, maintenance, and support of enterprise Microsoft infrastructure within highly secure virtualized environments. You will work on the deployment and management of core Microsoft technologies, ensuring the reliability, availability, and security of critical IT services. The successful candidate will play a key role in supporting server infrastructure, virtualization platforms, identity services, messaging platforms, patch management systems, and enterprise productivity solutions. This position offers the opportunity to work within a complex and sensitive technical environment on a long-term programme with significant operational importance.

Key Responsibilities

• Install, configure, administer, and maintain Microsoft Windows Server environments.
• Support virtualized infrastructure built on Microsoft Hyper‑V platforms.
• Manage Active Directory services, including users, groups, policies, and authentication services.
• Configure and support Group Policy Objects (GPOs) across enterprise environments.
• Administer Microsoft SQL Server platforms and related services.
• Support Microsoft Exchange messaging infrastructure.
• Manage Microsoft Skype for Business environments where applicable.
• Administer Windows Server Update Services (WSUS) and patch management activities.
• Support Public Key Infrastructure (PKI) services and certificate management.
• Deploy, configure, and maintain Microsoft Office and enterprise productivity solutions.
• Monitor system performance and proactively address infrastructure issues.
• Troubleshoot complex server, virtualization, and application-related incidents.
• Maintain infrastructure documentation, configurations, and operational records.
• Ensure compliance with security standards and operational procedures.

Required Qualifications & Skills

• Active SC or DV Security Clearance (Mandatory).
• Strong experience administering Microsoft Windows Server environments.
• Hands‑on experience with Microsoft Hyper‑V virtualization technologies.
• Experience managing Active Directory and Group Policy.
• Strong knowledge of Microsoft SQL Server administration.
• Experience supporting Microsoft Exchange environments.
• Experience administering WSUS and enterprise patch management solutions.
• Knowledge of PKI, certificates, and secure enterprise infrastructure.
• Experience deploying and supporting Microsoft Office solutions.
• Strong troubleshooting and root‑cause analysis capabilities.
• Experience supporting secure, enterprise‑scale infrastructure environments.
• Excellent documentation and communication skills.
• Ability to work effectively within highly regulated and security‑conscious environments.

Nice‑to‑Have Skills

• Experience within government, defence, or secure public‑sector environments.
• Microsoft Certified certifications (MCSA, MCSE, Azure Administrator, or equivalent).
• Experience with backup, disaster recovery, and business continuity solutions.
• Knowledge of PowerShell automation and scripting.
• Experience with infrastructure monitoring and management tools.
• Understanding of cybersecurity best practices and secure systems administration.
• Experience supporting large‑scale enterprise infrastructure programmes.

Recruitment Pro Tip

For cleared infrastructure roles, employers place significant value on a combination of active security clearance and hands‑on technical expertise. Make sure your CV clearly highlights your SC/DV clearance status, Microsoft server administration experience, Hyper‑V environments supported, Active Directory management responsibilities, and any experience working within highly secure government, defence, or mission‑critical infrastructure projects. Quantifiable achievements related to availability, security, migrations, or platform modernization can help differentiate your application.