Lead Network Engineer

We are delivering a major Defence transformation programme in the Hertfordshire area, centred on the design and delivery of a high-security, multi-site platform that goes far beyond the scope of a traditional corporate desktop service.

We are seeking a Lead Network Engineer who will do more than simply "run networks". You will take ownership of designing and deploying the physical networking backbone that underpins a complex, multi-site environment, playing a central role in shaping how the platform operates at scale. You will drive technical delivery, working hands-on with enterprise-grade hardware while providing technical leadership within a highly collaborative and supportive team.

This role offers genuine influence, long-term impact, and exposure to complex, nationally significant systems that few organisations can provide. For engineers motivated by purpose, scale, and complexity, it is a rare opportunity to see your technical leadership directly contribute to outcomes that truly matter.

What you'll be doing:

• Designing and deploying multi-site enterprise hardware platforms using COTS networking.
• Creating datacentre layouts, rack configurations and cabling schematics.
• Specifying and managing hardware components across the delivery lifecycle.
• Documenting low-level designs, procedures and disaster recovery instructions.
• Acting as the go-to expert for hardware and datacentre-related matters.
• Supporting hardware implementation and integration within secure environments.

• Strong hands-on experience managing and configuring network platforms.
• Expertise in fault-tolerant networking solutions.
• Solid understanding of enterprise hardware installation and resilient design principles.
• Proficiency in networking across multi-technology solutions.
• Knowledge of networking in Windows Server/Client and virtual environments.

It would be great if you had

• Cisco certifications.
• Hold an active DV (Developed Vetting).
• Experience with infrastructure automation tools such as Ansible and Terraform.
• Understanding of datacentre power and cooling requirements.
• Familiarity with secure environments and regulations (JSP 440, JSP 604, SCIDA).
• Experience with monitoring tools like SCOM and Splunk Enterprise.