Senior Infrastructure Engineer - Cloud & Security

RedRock Resourcing; England; On-site; GBP 45,000 - 65,000; Full time

Job summary

RedRock Resourcing is seeking an experienced 3rd Line Infrastructure Engineer to join a busy IT environment. You will tackle complex incidents across cloud, networking, security and on-prem infrastructure, driving stability and resilience.

You will own escalation, investigate issues end-to-end and implement improvements with an emphasis on automation and security best practices across Azure and enterprise networks.

Qualifications

• Experience in 3rd line support and active infrastructure management.
• Strong knowledge of Azure networking and security services.
• Proficient in firewall, VPN, DNS and email security controls.
• Hands-on with PowerShell and automation to reduce manual tasks.

Responsibilities

• Act as senior escalation point for complex IT incidents and service issues.
• Own infrastructure problems from investigation to resolution.
• Maintain availability, performance and security of servers, networks and cloud platforms.
• Oversee vulnerability remediation and regular updates.
• Develop backup, recovery and business continuity processes and tests.
• Configure firewalls, VPNs and monitoring; strengthen email security controls.
• Support infrastructure upgrades, migrations and new system rollouts.
• Collaborate with internal teams and external partners to implement improvements.
• Analyze recurring problems to improve reliability and efficiency.
• Create technical docs and share knowledge with peers.

Skills

3rd Line Support

Infrastructure

Networking

Cloud Engineering

Azure

Azure Networking

Security

PowerShell

Scripting

SIEM

Education

CCNA or AZ-104 certification

AZ-500 or AZ-700 certification

ITIL certification

Tools

Palo Alto

Fortinet

Cisco

PRTG

SolarWinds

Microsoft Defender

Mimecast

Proofpoint

Entra ID

Azure Site Recovery

Veeam

Job description

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.

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.

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.