SOC Senior Analyst in London

At DXC Technology, we are continuing to expand our high-security Cyber Defence capability and are looking for an experienced Tier 3 Security Analyst to join our growing Security Operations Centre (SOC) team based in Farnborough. We are passionate about building diverse, inclusive teams and actively encourage applications from women, underrepresented groups, and neurodivergent candidates, with support and adjustments available throughout the hiring process.

This is an opportunity to play a key role in protecting critical customer environments, leading complex investigations, driving proactive threat hunting activities, and helping shape the future of our security monitoring services. We are looking for someone who enjoys solving difficult security challenges, mentoring others, and operating in fast-paced, high-security environments where collaboration, technical depth, and clear communication are essential.

The Role

As a Tier 3 Security Analyst, you will act as a senior technical escalation point within the SOC, supporting the wider analyst team while leading the investigation and response to sophisticated cyber threats and incidents. You will work closely with internal security teams, customers, and stakeholders to continuously evolve detection capabilities, improve operational maturity, and ensure DXC continues to deliver a world-class security monitoring service. This role operates on a Monday to Friday core hours with an on-call commitment from Farnborough.

Security Requirements

Due to the nature of the work, candidates must have current SC clearance and be eligible to obtain UK Government DV clearance.

What You Will Be Doing

• Lead the investigation and response to complex cyber security incidents across high-security customer environments.
• Act as a senior escalation point for Tier 1 and Tier 2 analysts during active security events.
• Drive proactive threat hunting campaigns to identify emerging threats, vulnerabilities, and anomalous behaviour.
• Develop and improve detection logic, alerting, and monitoring content within SIEM platforms including Elastic Stack.
• Analyse threat intelligence, indicators of compromise (IOCs), and attacker TTPs to strengthen detection capability.
• Produce detailed post-incident reports with clear recommendations and improvement actions.
• Support and mentor junior SOC analysts, helping develop technical capability across the team.
• Collaborate with customers and internal stakeholders during incidents, communicating clearly with both technical and non-technical audiences.
• Contribute to the ongoing evolution and improvement of DXC's SOC services, processes, and operational standards.
• Participate in technical forums, knowledge sharing, and continuous improvement initiatives.

What We Are Looking For

We are interested in individuals who combine strong technical cyber security expertise with leadership, curiosity, and a proactive mindset. You should have experience in areas such as:

• Security Operations Centre (SOC) environments.
• Threat hunting and incident response.
• SIEM technologies, ideally Elastic Stack.
• Threat intelligence and attacker methodologies.
• Windows and Linux operating systems.
• Networking fundamentals including protocols, IP addressing, and traffic analysis.
• Understanding of modern attacker techniques, including LOLBins and weaponised COTS tooling.
• OSINT techniques and cyber threat analysis.
• Leading investigations and supporting junior analysts.
• Communicating effectively during high-pressure incidents.

Desirable Experience

• Experience working within high-security or government-aligned environments.
• Exposure to Elastic Stack, Splunk, Sentinel, or similar SIEM platforms.
• Security certifications such as: CISSP, CISM, CompTIA Security+, SecurityX.

Why Join DXC Technology?

DXC Technology is trusted by some of the world's largest organisations to deliver mission-critical technology and cyber security services. You will be joining a collaborative and highly skilled cyber team during a period of continued growth, where you will have the opportunity to:

• Work on complex and meaningful security challenges.
• Develop your technical and leadership capability.
• Contribute to innovative security operations and threat detection initiatives.
• Be part of a supportive environment focused on continuous learning and development.

In addition, DXC offers a competitive salary, bonus, and a flexible benefits package designed to support you both professionally and personally, including pension, private medical cover, and wellbeing programmes. If you are looking for a role where you can make a genuine impact while continuing to grow your cyber security career, we would love to hear from you.