3rd Line Infrastructure Engineer

Net Consulting is seeking an experienced and proactive 3rd Line Infrastructure Engineer to support and enhance enterprise infrastructure across secure environments. This role is ideal for professionals with deep technical expertise in container orchestration, networking, virtualisation, and enterprise monitoring and security platforms.

Primarily based in Cardiff, with occasional travel to other customer locations as required. You will be responsible for resolving complex infrastructure issues, mentoring junior engineers, and escalating critical matters to the Lead 3rd Line Engineer. You will work across technologies including Kubernetes, OpenShift, Dell servers, Cisco and Juniper networking, SAN, VMware, and security appliances such as Nexor data diodes and Endace packet probes.

You must be eligible for UK Security Check (SC) clearance, with the potential to progress to Developed Vetting (DV) clearance.

Responsibilities

• Provide advanced 3rd line support for:
  
  
  • Kubernetes, K3s, OpenShift, Padman, Rancher
    
    
  • Dell servers, Cisco firewalls, Juniper and Cisco switches
    
    
  • Brocade fabric switches, SAN storage, VMware, VDI
    
    
  • SolarWinds, Endace packet probes, Gigamon, Nexor data diodes
    
    
  • ESXi and KVM Hypervisors
    
    
  • Windows Server OS
    
    
  • RedHat Enterprise Linux OS
    
    Lead the resolution of complex incidents and problems escalated from Level 2
    
    Escalate unresolved or critical issues to the Lead 3rd Line Engineer, providing detailed diagnostics and documentation
    
    Collaborate with the Lead 3rd Line Engineer on infrastructure design, upgrades, and strategic improvements
    
    Mentor and support Level 1 and 2 engineers, promoting knowledge sharing and skills development
    
    Maintain system performance, availability, and security across all supported platforms
    
    Contribute to automation, scripting, and infrastructure-as-code initiatives
    
    Participate in change management, patching, and configuration control processes
    
    Maintain accurate technical documentation and support records
    
    Participate in on-call rotations and respond to high-priority incidents
    
    Skills & Experience
    
    Essential
    
    Proven experience in a 3rd line infrastructure support or systems engineering role
    
    
• Strong hands-on experience with:
  
  
  • Container platforms: Kubernetes, OpenShift, K3s, Podman, Rancher
    
    
  • Networking: Cisco firewalls/switches, Juniper switches, Brocade fabrics
    
    
  • Storage & Virtualisation: SAN, VMware ESXi, VDI
    
    
  • Monitoring & Security: SolarWinds, Endace, Gigamon, Nexor
    
    
  • Operating Systems: Windows Server, Linux
    
    Strong diagnostic and troubleshooting skills across complex systems
    
    Experience in secure environments and working with classified systems
    
    Excellent communication skills for liaising with the Lead Engineer and wider teams
    
    Eligible for UK SC clearance
    
    Full UK Driving Licences
    
    Desirable
    
    
• Experience with infrastructure automation (e.g., Ansible, Terraform)
  
  
• Scripting skills (e.g., PowerShell, Bash, Python)
  
  
• KVM Hypervisor experience
  
  
• Familiarity with ITIL processes and service management
  
  
• Exposure to MOD or defence sector environment
  
  Person Specification
  
  Integrity & Professionalism: Demonstrates honesty, ethical behaviour, and professionalism in all interactions, reflecting NCL’s commitment to transparency and trust
  
  Customer Focus: Committed to delivering value and building long-term partnerships with clients by understanding their needs and exceeding expectations
  
  Collaboration: Works effectively as part of a team, contributing to shared goals and supporting colleagues across departments
  
  Adaptability: Thrives in a fast-paced, evolving environment and is able to manage changing priorities with resilience
  
  Accountability: Takes ownership of tasks and decisions, showing initiative and responsibility in delivering high-quality outcomes
  
  Curious and proactive in learning new technologies and staying current with cyber threats and security trends
  
  Clear communicator, able to explain technical issues to both technical and non-technical audiences
  
  Detail-oriented, with strong analytical and problem-solving skills
  
  Committed to sustainability, showing awareness of environmental and social responsibility in the workplace
  
  Health & Wellbeing Awareness: Values a positive work/life balance and contributes to a supportive and respectful working environment
  
  Company Benefits
  
  Competitive Salary
  
  Workplace Benefits: Contributory Pension Scheme, Private Medical Insurance, Life Assurance, Critical Illness Cover, Health & Wellbeing
  
  25 Days’ Annual Leave (in addition to Bank Holidays)
  
  Performance Bonuses (Personal & Company)
  
  Excellent Career Progression Opportunities
  
  On-call/call-out allowance, where applicable