RedRock Resourcing
3rd Line Infrastructure Engineer
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3rd Line Infrastructure Engineer
Location: London (Hybrid)
I’m recruiting for an experienced 3rd Line Infrastructure Engineer to join a growing organisation with a busy, modern IT environment. This is a hands-on role for someone who enjoys solving complex technical problems and working across cloud, networking, infrastructure and security. You’ll play a key role in maintaining a stable, secure and highly available IT environment while supporting wider technology projects.
Key Responsibilities:
- Act as a senior technical escalation point for complex IT incidents and service issues.
- Take ownership of infrastructure problems from investigation through to resolution.
- Support the availability, performance and security of servers, networks, cloud platforms and virtual environments.
- Oversee vulnerability remediation and ensure systems are regularly updated and securely maintained.
- Develop and maintain reliable backup, recovery and business continuity processes, including regular testing.
- Configure and support firewalls, VPNs, network services and infrastructure monitoring.
- Manage and strengthen email security controls, helping protect the organisation against phishing, spoofing and data loss.
- Contribute to major technology changes, including infrastructure upgrades, migrations and new system rollouts.
- Work with internal IT teams and external technology partners to resolve complex issues and deliver technical improvements.
- Analyse recurring problems and identify opportunities to improve the reliability and efficiency of the IT environment.
- Create and maintain technical knowledge articles, system documentation and operational procedures.
- Share technical knowledge with less experienced members of the team and provide support where required.
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Skills & Experience:
- Solid background in 3rd Line Support, Infrastructure, Network or Cloud Engineering.
- Strong practical experience across Microsoft Azure, particularly Azure networking and security services.
- Good understanding of enterprise networking, including routing, switching, VLANs, DNS, VPNs and network security.
- Experience working with enterprise firewall technologies such as Palo Alto, Fortinet or Cisco.
- Strong knowledge of Entra ID and Microsoft cloud identity, including Conditional Access and privileged access controls.
- Experience implementing and supporting backup and disaster recovery solutions, ideally with Veeam or Azure Site Recovery.
- Previous involvement in vulnerability, patch and security management within an enterprise environment.
- Experience securing corporate email using platforms such as Mimecast, Proofpoint or Microsoft Defender.
- Familiarity with infrastructure and network monitoring solutions such as PRTG, SolarWinds or similar.
- Experience supporting Hyper-V and/or wider cloud infrastructure.
- Comfortable using PowerShell or similar scripting tools to automate tasks and improve efficiency.
- Knowledge of security monitoring/SIEM technologies such as Microsoft Sentinel or Splunk would be beneficial.
- Relevant technical certification such as CCNA or AZ-104 is essential.
- AZ-500, AZ-700 or ITIL certification would be advantageous.
- Strong analytical and problem-solving skills, with the ability to work independently on complex technical issues.
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An excellent opportunity to join a leading organisation during a period of growth and change. Please send CV for full job description and an informal chat.
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