1 to 25 of 37 Cyber Defence Jobs in the South East

on, 4 days off day and night shift pattern The Role: Leidos, a Global IT Solutions Provider specialising in large scale implementations involving science, engineering, and technology, require a Cyber Defence Analyst to work in their CSOC (Cyber Security Operations Centre) Team. The Cyber Defence Analyst will be expected to contribute to the growth and … development of the CSOC. You will work with a wide variety of stakeholders to ensure, the Leidos CSOC, a Defensive Cyber Security capability, can support a customers Cyber Resilience, protecting them with a 24 x 7 Threat Detection and Response service, mitigating their risk of Cyber Attack. The successful candidate will be able to demonstrate experience from … a CSOC background or be able to demonstrate sufficient transferable Cyber Security knowledge, qualifications, aptitude, and passion to quickly learn the Cyber Defence Analyst role. To succeed in the role the candidate must be capable of working under pressure, delivering on multiple customer accounts and have an appetite to progress and develop their own Cyber Security More ❯

Our client is seeking an experienced Associate Security Analyst to join their Cyber Defence team. This is a hands-on role where you will investigate and respond to cyber security incidents that could impact critical systems and services across the UK. You will play a key part in identifying threats, supporting incident response, and helping to continually … improve the organisation’s cyber defence capabilities. The role also involves mentoring apprentice analysts and joining an out-of-hours on-call rota to ensure 24/7 coverage of potential cyber incidents. Key Responsibilities Investigate and triage cyber security alerts and user reports. Analyse systems, files, network traffic, and cloud environments to determine the extent … incidents, including containment, eradication, and recovery. Contribute to post-incident reviews and develop lessons learned. Create and improve incident response playbooks and knowledge base articles. Work closely with wider Cyber Defence functions to strengthen security operations. Act as an escalation point for apprentice security analysts, providing coaching, mentoring, and line management. What We’re Looking For More ❯

UK) Company & Role This is more than a SOC role, it is a chance to join a fast growing, people first global service provider that is redefining what great cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT and Cyber outsourcing and managed services to customers across enterprise, public … Testing and Incident Response, supported by a world class Security Advisory function. As a Senior SOC Analyst, you will take a leading role in identifying, investigating and responding to cyber threats across varied client environments. You will mentor junior analysts, lead complex incidents and help evolve the SOC’s detection and response capabilities. This is an opportunity to make … and the support to grow into roles such as SOC Lead, Threat Hunter, Security Engineer or Incident Responder. Why This Role Stands Out Join a $1B global IT and Cyber Defence provider that invests heavily in people and technology Work with cutting edge platforms such as Microsoft Sentinel, Defender, Elastic and Palo Alto Be part of a collaborative More ❯

UK) Company & Role This is more than a SOC role, it is a chance to join a fast growing, people first global service provider that is redefining what great cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT and Cyber outsourcing and managed services to customers across enterprise, public … Testing and Incident Response, supported by a world class Security Advisory function. As a Senior SOC Analyst, you will take a leading role in identifying, investigating and responding to cyber threats across varied client environments. You will mentor junior analysts, lead complex incidents and help evolve the SOC’s detection and response capabilities. This is an opportunity to make … and the support to grow into roles such as SOC Lead, Threat Hunter, Security Engineer or Incident Responder. Why This Role Stands Out Join a $1B global IT and Cyber Defence provider that invests heavily in people and technology Work with cutting edge platforms such as Microsoft Sentinel, Defender, Elastic and Palo Alto Be part of a collaborative More ❯

UK) Company & Role This is more than a SOC role, it is a chance to join a fast growing, people first global service provider that is redefining what great cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT and Cyber outsourcing and managed services to customers across enterprise, public … Testing and Incident Response, supported by a world class Security Advisory function. As a Senior SOC Analyst, you will take a leading role in identifying, investigating and responding to cyber threats across varied client environments. You will mentor junior analysts, lead complex incidents and help evolve the SOC's detection and response capabilities. This is an opportunity to make … and the support to grow into roles such as SOC Lead, Threat Hunter, Security Engineer or Incident Responder. Why This Role Stands Out Join a $1B global IT and Cyber Defence provider that invests heavily in people and technology Work with cutting edge platforms such as Microsoft Sentinel, Defender, Elastic and Palo Alto Be part of a collaborative More ❯

UK) Company & Role This is more than a SOC role, it is a chance to join a fast growing, people first global service provider that is redefining what great cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT and Cyber outsourcing and managed services to customers across enterprise, public … Testing and Incident Response, supported by a world class Security Advisory function. As a Senior SOC Analyst, you will take a leading role in identifying, investigating and responding to cyber threats across varied client environments. You will mentor junior analysts, lead complex incidents and help evolve the SOC’s detection and response capabilities. This is an opportunity to make … and the support to grow into roles such as SOC Lead, Threat Hunter, Security Engineer or Incident Responder. Why This Role Stands Out Join a $1B global IT and Cyber Defence provider that invests heavily in people and technology Work with cutting edge platforms such as Microsoft Sentinel, Defender, Elastic and Palo Alto Be part of a collaborative More ❯

+ Benefits + Training Hybrid (Portsmouth, UK) Company & Role This is an opportunity to join a fast growing, people first global service provider that is redefining what excellence in cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT outsourcing and managed services to customers across enterprise, public sector and fast … practice. As a Senior Security Engineer, you will be responsible for designing, implementing and maintaining the tools, platforms and integrations that power the company’s Security Operations Centre and Cyber Defence services. This role blends hands on technical engineering with solution design and automation, ideal for someone who thrives on solving complex problems, improving processes and enabling analysts … to detect and respond faster. Why This Role Stands Out • Join a $1B global IT and Cyber Defence provider investing heavily in people, platforms and innovation • Shape and enhance the SOC’s technical foundations, influencing how detection and response evolves • Work with cutting edge tools across Microsoft, Elastic, Palo Alto, Splunk and other leading technologies • Hybrid working, flexible More ❯

+ Benefits + Training Hybrid (Portsmouth, UK) Company & Role This is an opportunity to join a fast growing, people first global service provider that is redefining what excellence in cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT outsourcing and managed services to customers across enterprise, public sector and fast … practice. As a Senior Security Engineer, you will be responsible for designing, implementing and maintaining the tools, platforms and integrations that power the company’s Security Operations Centre and Cyber Defence services. This role blends hands on technical engineering with solution design and automation, ideal for someone who thrives on solving complex problems, improving processes and enabling analysts … to detect and respond faster. Why This Role Stands Out • Join a $1B global IT and Cyber Defence provider investing heavily in people, platforms and innovation • Shape and enhance the SOC’s technical foundations, influencing how detection and response evolves • Work with cutting edge tools across Microsoft, Elastic, Palo Alto, Splunk and other leading technologies • Hybrid working, flexible More ❯

+ Benefits + Training Hybrid (Portsmouth, UK) Company & Role This is an opportunity to join a fast growing, people first global service provider that is redefining what excellence in cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT outsourcing and managed services to customers across enterprise, public sector and fast … practice. As a Senior Security Engineer, you will be responsible for designing, implementing and maintaining the tools, platforms and integrations that power the company's Security Operations Centre and Cyber Defence services. This role blends hands on technical engineering with solution design and automation, ideal for someone who thrives on solving complex problems, improving processes and enabling analysts … to detect and respond faster. Why This Role Stands Out • Join a $1B global IT and Cyber Defence provider investing heavily in people, platforms and innovation • Shape and enhance the SOC's technical foundations, influencing how detection and response evolves • Work with cutting edge tools across Microsoft, Elastic, Palo Alto, Splunk and other leading technologies • Hybrid working, flexible More ❯

+ Benefits + Training Hybrid (Portsmouth, UK) Company & Role This is an opportunity to join a fast growing, people first global service provider that is redefining what excellence in cyber defence looks like. With over $1B in global revenue, this organisation delivers end to end IT outsourcing and managed services to customers across enterprise, public sector and fast … practice. As a Senior Security Engineer, you will be responsible for designing, implementing and maintaining the tools, platforms and integrations that power the company’s Security Operations Centre and Cyber Defence services. This role blends hands on technical engineering with solution design and automation, ideal for someone who thrives on solving complex problems, improving processes and enabling analysts … to detect and respond faster. Why This Role Stands Out • Join a $1B global IT and Cyber Defence provider investing heavily in people, platforms and innovation • Shape and enhance the SOC’s technical foundations, influencing how detection and response evolves • Work with cutting edge tools across Microsoft, Elastic, Palo Alto, Splunk and other leading technologies • Hybrid working, flexible More ❯

Hybrid (London, UK) Company & Role This is an opportunity to join a people first, values led $1B global technology services provider that delivers end to end IT outsourcing and cyber defence services to clients across the UK and internationally. Its Security Advisory team sits at the core of the organisation’s Cyber Defence practice, helping clients … internal SOC, Engineering and Governance teams to ensure alignment between architecture, detection and operations. Why This Role Stands Out • Join a $1B global technology provider with a rapidly growing Cyber Defence and Security Advisory practice • Deliver consultancy that defines how major organisations secure their cloud environments • Influence technical direction and help shape the future of cloud security service … incident response and remediation activities related to cloud environments • Collaborating with SOC and Engineering teams to strengthen detection, telemetry and visibility • Providing compliance guidance aligned to ISO 27001, NIST, Cyber Essentials Plus and NHS DSPT • Mentoring junior consultants and contributing to the development of cloud security methodologies What You’ll Bring • 4 or more years of experience in cloud More ❯

Hybrid (London, UK) Company & Role This is an opportunity to join a people first, values led $1B global technology services provider that delivers end to end IT outsourcing and cyber defence services to clients across the UK and internationally. Its Security Advisory team sits at the core of the organisation’s Cyber Defence practice, helping clients … internal SOC, Engineering and Governance teams to ensure alignment between architecture, detection and operations. Why This Role Stands Out • Join a $1B global technology provider with a rapidly growing Cyber Defence and Security Advisory practice • Deliver consultancy that defines how major organisations secure their cloud environments • Influence technical direction and help shape the future of cloud security service … incident response and remediation activities related to cloud environments • Collaborating with SOC and Engineering teams to strengthen detection, telemetry and visibility • Providing compliance guidance aligned to ISO 27001, NIST, Cyber Essentials Plus and NHS DSPT • Mentoring junior consultants and contributing to the development of cloud security methodologies What You’ll Bring • 4 or more years of experience in cloud More ❯

Hybrid (London, UK) Company & Role This is an opportunity to join a people first, values led $1B global technology services provider that delivers end to end IT outsourcing and cyber defence services to clients across the UK and internationally. Its Security Advisory team sits at the core of the organisation’s Cyber Defence practice, helping clients … internal SOC, Engineering and Governance teams to ensure alignment between architecture, detection and operations. Why This Role Stands Out • Join a $1B global technology provider with a rapidly growing Cyber Defence and Security Advisory practice • Deliver consultancy that defines how major organisations secure their cloud environments • Influence technical direction and help shape the future of cloud security service … incident response and remediation activities related to cloud environments • Collaborating with SOC and Engineering teams to strengthen detection, telemetry and visibility • Providing compliance guidance aligned to ISO 27001, NIST, Cyber Essentials Plus and NHS DSPT • Mentoring junior consultants and contributing to the development of cloud security methodologies What You’ll Bring • 4 or more years of experience in cloud More ❯

Senior Security Analyst – SOC/Incident Response I’m partnering with a fast-growing Cyber Defence function that’s strengthening its Security Operations Centre and looking for a talented Senior Security Analyst to join the team. You’ll take a leading role in detecting, analysing, and responding to cyber threats across diverse client environments, mentoring junior analysts … and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should bring: 2–4 years’ experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical More ❯

Senior Security Analyst – SOC/Incident Response I’m partnering with a fast-growing Cyber Defence function that’s strengthening its Security Operations Centre and looking for a talented Senior Security Analyst to join the team. You’ll take a leading role in detecting, analysing, and responding to cyber threats across diverse client environments, mentoring junior analysts … and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should bring: 2–4 years’ experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical More ❯

Senior Security Analyst - SOC/Incident Response I'm partnering with a fast-growing Cyber Defence function that's strengthening its Security Operations Centre and looking for a talented Senior Security Analyst to join the team. You'll take a leading role in detecting, analysing, and responding to cyber threats across diverse client environments, mentoring junior analysts … and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should bring: 2-4 years' experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical More ❯

Senior Security Analyst – SOC/Incident Response I’m partnering with a fast-growing Cyber Defence function that’s strengthening its Security Operations Centre and looking for a talented Senior Security Analyst to join the team. You’ll take a leading role in detecting, analysing, and responding to cyber threats across diverse client environments, mentoring junior analysts … and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should bring: 2–4 years’ experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical More ❯

Senior Security Analyst – SOC/Incident Response I’m partnering with a fast-growing Cyber Defence function that’s strengthening its Security Operations Centre and looking for a talented Senior Security Analyst to join the team. You’ll take a leading role in detecting, analysing, and responding to cyber threats across diverse client environments, mentoring junior analysts … and support automation initiatives. Produce incident reports and guide remediation activities. Help coach and upskill junior analysts. You should bring: 2–4 years’ experience in a SOC, CSIRT, or cyber defence environment. Solid knowledge of SIEM and EDR platforms (Sentinel, Splunk, Defender, CrowdStrike, etc.). Understanding of MITRE ATT&CK and network/cloud security principles. Strong analytical More ❯

k + Bonus + Benefits Currently working with a global InsureTech firm who are looking to hire a Senior SecOps Engineer to compliment their established yet growing internal Cyber Defence capability. This is a wide ranging role where you'll be responsible for both Engineering and Analysis; monitoring and responding to incidents whilst also developing new detection rules … SecOps specialist with experience of both SecOps Analysis and Engineering to join an established yet growing firm at a crucial point as they completely build out their Information and Cyber Security capability. Key Responsibilities: Act as a lead and technical escalation point on the most complex incidents and investigations. Develop and engineer new detection rules, automating monotonous tasks where … led on, specific to SecOps Engineering and Automation. If you're an experienced SecOps Specialist, looking to shape how one of the most innovative HealthTech firms build out their cyber defence capability and leave a lasting impact on one of the most reputable organisations whilst working alongside a team of genuine Cyber Security SMEs, click the to More ❯

k + Bonus + Benefits Currently working with a global InsureTech firm who are looking to hire a Senior SecOps Engineer to compliment their established yet growing internal Cyber Defence capability. This is a wide ranging role where you’ll be responsible for both Engineering and Analysis; monitoring and responding to incidents whilst also developing new detection rules … SecOps specialist with experience of both SecOps Analysis and Engineering to join an established yet growing firm at a crucial point as they completely build out their Information and Cyber Security capability. Key Responsibilities: Act as a lead and technical escalation point on the most complex incidents and investigations. Develop and engineer new detection rules, automating monotonous tasks where … led on, specific to SecOps Engineering and Automation. If you’re an experienced SecOps Specialist, looking to shape how one of the most innovative HealthTech firms build out their cyber defence capability and leave a lasting impact on one of the most reputable organisations whilst working alongside a team of genuine Cyber Security SMEs, click the to More ❯

k + Bonus + Benefits Currently working with a global InsureTech firm who are looking to hire a Senior SecOps Engineer to compliment their established yet growing internal Cyber Defence capability. This is a wide ranging role where you’ll be responsible for both Engineering and Analysis; monitoring and responding to incidents whilst also developing new detection rules … SecOps specialist with experience of both SecOps Analysis and Engineering to join an established yet growing firm at a crucial point as they completely build out their Information and Cyber Security capability. Key Responsibilities: Act as a lead and technical escalation point on the most complex incidents and investigations. Develop and engineer new detection rules, automating monotonous tasks where … led on, specific to SecOps Engineering and Automation. If you’re an experienced SecOps Specialist, looking to shape how one of the most innovative HealthTech firms build out their cyber defence capability and leave a lasting impact on one of the most reputable organisations whilst working alongside a team of genuine Cyber Security SMEs, click the to More ❯

k + Bonus + Benefits Currently working with a global InsureTech firm who are looking to hire a Senior SecOps Engineer to compliment their established yet growing internal Cyber Defence capability. This is a wide ranging role where you’ll be responsible for both Engineering and Analysis; monitoring and responding to incidents whilst also developing new detection rules … SecOps specialist with experience of both SecOps Analysis and Engineering to join an established yet growing firm at a crucial point as they completely build out their Information and Cyber Security capability. Key Responsibilities: Act as a lead and technical escalation point on the most complex incidents and investigations. Develop and engineer new detection rules, automating monotonous tasks where … led on, specific to SecOps Engineering and Automation. If you’re an experienced SecOps Specialist, looking to shape how one of the most innovative HealthTech firms build out their cyber defence capability and leave a lasting impact on one of the most reputable organisations whilst working alongside a team of genuine Cyber Security SMEs, click the to More ❯

enterprise compute platforms, data networks, UNIX/Linux/Windows environments, cloud services, data centres, commercial software solutions, and end-user support across all UKAEA sites. Role Overview : The Cyber Security Specialist plays a pivotal role in advancing UKAEA's hybrid digital estate, encompassing enterprise IT, operational technology (OT), and research platforms. This role sits within the Information & Cyber Security Group and provides subject matter expertise in security architecture, cyber risk governance, and assurance frameworks. This is a cross-functional role with both advisory and hands-on responsibilities, focusing on security assurance, risk management and supporting architecture reviews, vulnerability management, risk assessments, cyber defence posture, driving technical assurance, and embedding risk-aligned security controls across … and platforms. You will also guide teams in applying secure-by-design principles and support both internal audit and external compliance efforts including Gov Assure, CAF, ISO 27001, and Cyber Essentials (CE and CE+) while supporting the secure operation of core services. The role requires strong stakeholder engagement, technical depth, and a sound understanding of UK-specific cyber More ❯

Lead Cyber Security Engineer We're partnered with a global law firm who are looking to build a next-generation Security Operations (SecOps) function. They are looking for a Lead Cyber Security Engineer to drive innovation, strengthen resilience, and champion a zero-trust approach across their global network. Hybrid working- 3 days in London per week What You … ground up and manage/mentor the team. Lead the implementation, optimisation, and management of cutting-edge security tools like CrowdStrike, Palo Alto, and Mimecast. Take ownership of our cyber defence posture from incident response and vulnerability management to WAFs, DDoS protection, and encryption. Mentor junior engineers, elevate best practices, and help us on our journey to ISO More ❯

Lead Cyber Security Engineer We're partnered with a global law firm who are looking to build a next-generation Security Operations (SecOps) function. They are looking for a Lead Cyber Security Engineer to drive innovation, strengthen resilience, and champion a zero-trust approach across their global network. *Hybrid working- 3 days in London per week* What You … ground up and manage/mentor the team. Lead the implementation, optimisation, and management of cutting-edge security tools like CrowdStrike, Palo Alto, and Mimecast. Take ownership of our cyber defence posture from incident response and vulnerability management to WAFs, DDoS protection, and encryption. Mentor junior engineers, elevate best practices, and help us on our journey to ISO More ❯