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.

Make sure to apply quickly in order to maximise your chances of being considered for an interview Read the complete job description below.

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