Security Engineer (Vulnerability)
Manchester, Glasgow, London or Newbury - Hybrid
A bit about us
At Gamma we provide voice, data, and mobile solutions to businesses across the UK, Germany, Spain, and the Benelux region.
Our people are at the heart of everything we do. When you join us, you’ll be part of a collaborative, forward-thinking team that’s transforming how businesses connect and communicate globally.
We’re growing fast, but we never lose sight of what matters: our people. Whether you're looking to develop your skills, take on new challenges, or make a meaningful impact, Gamma is the place to do it.
What is the role responsible for?
We are seeking a skilled and client-focused Security Engineer with strong expertise in Vulnerability Management and Network Security engineering.
This role operates within a managed service provider environment, delivering security services to enterprise clients, with a primary focus on risk-based vulnerability management alongside network security, firewall optimisation, and access control.
The successful candidate will be responsible for identifying, assessing, prioritising, and driving remediation of vulnerabilities across complex enterprise environments. In addition, they will contribute to strengthening overall cyber resilience by aligning vulnerability management with Managed Detection and Response (MDR) operations, supporting Secure Access Service Edge (SASE) frameworks, and advancing Zero Trust security models across network, identity, and access control layers.
This is a hands-on engineering role requiring deep technical expertise across vulnerability management and network security, combined with strong stakeholder engagement. The role ensures security risks are proactively reduced, controls are optimised, and remediation is delivered in line with contractual SLAs and cyber security best practices.
What will you be doing day-to-day?
- Deliver end-to-end vulnerability management services, including discovery, assessment, prioritisation, reporting, and remediation tracking.
- Operate vulnerability scanning tools across client environments, validating findings and confirming remediation effectiveness.
- Analyse vulnerability data, remove false positives, and provide clear, risk-based remediation guidance.
- Produce client-facing reports, dashboards, and service reviews to highlight risk posture, trends, and improvement areas.
- Support deployment, optimisation, and detection engineering across Microsoft Sentinel, SIEM, XDR, NDR, and identity platforms.
- Integrate telemetry across network, endpoint, cloud, and identity sources to improve detection coverage and reduce false positives.
- Collaborate with infrastructure, cloud, application, SOC, and delivery teams to resolve vulnerabilities and strengthen hybrid security posture.
- Support client engagement, governance, audits, service improvement, and Breach & Attack Simulation activity to validate security controls.
What you’ll need:
- Strong experience in delivering vulnerability management services, ideally within a managed service or consultancy environment
- Deep understanding of vulnerability lifecycle management (discovery / assessment / remediation / validation / reporting)
- Hands-on experience with Tufin (SecureTrack / SecureChange) or similar tools such as Palo Alto Panorama or Cisco Defense Orchestrator
- Proficiency with vulnerability scanning tools (Qualys, Nessus, Rapid7)
- Solid knowledge of network security principles (firewalls, VPNs, segmentation, protocols)
- Experience working with client stakeholders and managing competing priorities
- Ability to translate technical vulnerabilities into business risk and remediation actions
- Strong analytical, troubleshooting, and communication skills
What do we offer you?
- 25 days annual leave + birthday
- Subsidised private medical insurance
- 5.1% matched pension contributions
- Enhanced parental leave
- Life assurance and Income protection
- save and incentive plans
- Electric Vehicle and Cycle scheme
- Employee discounts
- Volunteer day
A few things to note
We require all candidates to be eligible to work in the UK and pass a basic DBS check.
If you don’t meet every requirement but feel you could thrive in this role, we would still encourage you to .
Gamma is an equal-opportunity employer committed to building diverse, inclusive teams where everyone feels valued and can be their authentic selves. We welcome applicants from all backgrounds, especially those underrepresented in our industry. As a family-friendly employer, we foster a culture of trust, autonomy, and flexibility to support your work-life balance and help you thrive at Gamma.
For recruitment agencies – we have a network of fantastic partners that support us in our hiring from time to time. We’re not looking to increase that network currently, so please don’t send speculative CVs.
