Job Vacancy Senior Systems Infrastructure Engineer

Location: Basingstoke (Hybrid)
Salary: Up to £80K plus benefits
Security Clearance: Active UK DV required
Travel Required: Travel expected to client offices

The Mission
We are looking for a versatile Senior Systems Infrastructure Engineer who thrives on variety. You won't be siloed into a single technology; instead, you'll oversee a complex, high-security ecosystem spanning Windows, Linux, and modern Software-Defined and Cloud Data Centres.

You are the "Safe Pair of Hands" for our infrastructure-capable of designing a network, automating a server build, and troubleshooting a production outage with equal precision.

This role is twofold, working on internal cutting-edge R&D projects alongside customer-facing delivery responsibilities for our clients.

Key Responsibilities
Full-Stack Infrastructure: Support the design,  lead deployments, support the lifecycle management of high-availability servers, storage, and networking

Hybrid Environment Management: Administer a diverse production estate, ensuring seamless interoperability between Windows and Linux platforms.

Infrastructure as Code: Drive the shift toward automated deployments using tools such as Terraform and Ansible to reduce manual configuration.

Advanced Troubleshooting: Act as the final point of escalation for complex system defects, utilising deep-dive forensics across both physical hardware and digital layers.

Virtualisation Oversight: Maintain and optimise our virtualised environments (vSphere/vSAN) as part of a wider software-defined strategy.

What you'll Bring
Broad Systems Expertise: Deep Wintel knowledge (Active Directory, PowerShell, DNS/DHCP) combined with a solid foundation in Linux.

Automation-First Mindset: Experience (or a strong desire) to work with Configuration Management and IaC tools.

Hardware & Networking: A "builder" mentality-capable of configuring hardware and understanding the underlying network fabric (switching, routing, security).

Senior Leadership: The ability to take a project from a blank whiteboard to a fully documented production reality.

Requirement: An active DV Clearance is essential due to the sensitive nature of the environments you will support.

The Benefits
Financial: Up to £80,000.

Security: Full-time, permanent role within a stable, high-growth sector.

Balance: A genuine hybrid working model based in Basingstoke and the Southeast. Potential for international travel.

Perks: 25 days leave, private medical cover and a competitive pension.


Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance.

An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.

Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.