Senior Infrastructure Security Engineer

La Fosse Associates; Oxford; Hybrid; GBP 50,000 - 60,000; Full time

Job summary

A leading security firm is seeking a Senior Infrastructure Security Engineer to secure its infrastructure estate. You will implement security controls across network, cloud, and endpoints while owning technologies such as firewalls and SIEM systems. The role offers a competitive salary between £50,000 and £60,000, along with bonuses and remote work options, requiring travel to locations for team meetings.

Benefits

Competitive package with bonus

Car allowance

Expensed travel

Qualifications

• Strong background in infrastructure or network security within a complex enterprise environment.
• Solid knowledge of firewalls, VPN, IDS/IPS, and security controls.
• Hands-on experience in vulnerability management and incident response.

Responsibilities

• Implement and maintain security controls across various environments.
• Own key technologies for infrastructure security.
• Drive vulnerability management across the estate.

Skills

Infrastructure security

Network security

Firewalls

Cloud security (Azure/AWS)

Incident response

Documentation skills

Tools

SIEM tools (e.g. Splunk, Sentinel)

Vulnerability management tools (e.g. Qualys, Tenable)

Job description

Job Benefits: 3600

Senior Infrastructure Security Engineer

£50,000 – £60,000 + bonus + car allowance + benefits

Remote (with travel to Oxford or Nuneaton for team meetings)

We’re looking for a hands-on Senior Infrastructure Security Engineer to join a growing Infrastructure & Security team, and the chance to be one of the first in a new security remit. You’ll be reporting into the new Head of Infrastructure Security, playing a key role in building and securing the organisation’s group-wide infrastructure estate.

You’ll be the go-to engineer for securing core infrastructure services, working across network, cloud, and platform environments to keep systems protected while enabling the business to run smoothly.

What you’ll be doing:

• Implementing and maintaining security controls across network, cloud, endpoints, and core infrastructure
• Owning key technologies like firewalls, SIEM, EDR, VPN, NAC, and vulnerability scanners
• Driving vulnerability management and hardening across the estate
• Supporting and responding to security incidents across infrastructure services
• Embedding security into infrastructure changes (firewall rules, access reviews, cloud deployments)
• Working with engineering teams to improve the security posture of Azure and AWS platforms
• Writing and maintaining runbooks, standards, and procedures to raise security maturity

What we’re looking for:

• Strong background in infrastructure or network security within a complex enterprise environment
• Solid knowledge of:
• Firewalls, VPN, IDS/IPS, network security controls
• Endpoint security (EDR, anti-malware, DLP)
• SIEM tools (e.g. Splunk, Sentinel)
• Vulnerability management (e.g. Qualys, Tenable)
• Cloud (Azure and/or AWS)
• Hands-on experience supporting or responding to security incidents
• Familiarity with frameworks such as ISO 27001, NIST, CIS, Cyber Essentials
• Great documentation, troubleshooting, and communication skills

Why join?

• Play a central role in strengthening security across a multi-industry group (rail, logistics, manufacturing, tech, aerospace)
• Report into a supportive leadership team who’ll help you grow your career
• Competitive package with bonus, car allowance, and expensed travel
• Step into a role where you can directly shape security across the group’s infrastructure

Apply now to take ownership of security engineering and be part of a team driving major change.