> Markdown version of [/jobs/ext/1198397-infrastructure-engineer](https://www.wearedevelopers.com/jobs/ext/1198397-infrastructure-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Infrastructure Engineer

- **Company:** SII Services Limited
- **Location:** UK
- **Contract:** Permanent contract
- **Skills:** Active Directory, Systems Engineering, Domain Name System (DNS), Windows Servers, Server Operating Systems & Platforms
- **Published:** July 7, 2026
- **Apply:** https://sii-group.com/en-GB/job-application/22290?source=

## About the Role

This role suits an engineer with strong experience in enterprise infrastructure, virtualisation platforms, and secure system configuration, operating in environments where reliability, security, and performance are critical., * Strong experience with virtualisation technologies (e.g. VMware, Hyper-V or equivalent hypervisors)

 * Solid knowledge of Windows Server administration and system configuration
 * Hands-on experience with Active Directory design and management
 * Understanding of Windows hardening techniques and security controls (e.g. GPO, CIS baselines)
 * Knowledge of networking fundamentals, including DNS and TCP/IP
 * Experience in infrastructure build, configuration, and troubleshooting
 * Familiarity with monitoring and performance tuning of infrastructure systems
 * Strong problem-solving and analytical skills
 * Ability to document technical solutions clearly and effectively

ESSENTIAL EXPEIRENCE:

 * Proven experience in an Infrastructure Engineer or Systems Engineer role within enterprise or complex environments
 * Experience building and supporting virtualised server environments
 * Demonstrated experience implementing Windows server hardening and security controls
 * Experience designing and administering Active Directory environments
 * Experience supporting core infrastructure services such as DNS and networking
 * Experience working in secure, regulated, or mission-critical environments is highly desirable

## Description

We are seeking an Infrastructure Engineer to design, build, and support secure virtualised environments within a complex, high-assurance infrastructure. The role focuses on hypervisor deployment, virtual server provisioning, Windows hardening, and Active Directory design, alongside supporting critical infrastructure services., * Build and configure virtual server environments, including installation and management of hypervisors

 * Provision and maintain virtual machines, ensuring performance, availability, and scalability
 * Implement Windows system hardening and lockdown measures, aligned with security best practices and standards
 * Design, deploy, and manage Active Directory (AD) architecture, including:
o domains and forests
o group policies (GPOs)
o identity and access management

 * Support and maintain core infrastructure services, including:
o DNS
o TCP/IP networking services

 * Monitor system performance, availability, and security posture across infrastructure environments
 * Troubleshoot and resolve infrastructure issues across virtualisation, OS, and network layers
 * Produce and maintain technical documentation, including build guides, configurations, and standards
 * Collaborate with security, network, and systems teams to ensure secure and integrated infrastructure design


## Related Videos

- [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone)
- [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process)
- [MCP Mashups: How AI Agents are Reviving the Programmable Web](https://www.wearedevelopers.com/videos/1392-mcp-mashups-how-ai-agents-are-reviving-the-programmable-web)
- [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net)
- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)
- [Automated Driving - Why is it so hard to introduce](https://www.wearedevelopers.com/videos/628-automated-driving-why-is-it-so-hard-to-introduce)

## Related Articles

- [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk)
- [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk)
- [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)
- [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)
- [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)