26 to 50 of 83 Security Specialist Jobs in England

immediate impact within a high-performing financial firm? We're working with a globally respected investment manager known for its rigorous risk discipline and advanced technical stack, seeking a Security Engineer to play a hands-on role in strengthening identity, access, and cloud security infrastructure. This is a rare opportunity to join a close-knit, London-based team … with direct ownership over security tooling, architecture and operations - all within a fast-paced, high-stakes trading environment... Key Responsibilities Take ownership of Identity and Access Management (IAM) platforms, including Entra ID (Azure AD), ensuring secure access and role governance across systems Design and implement security controls for hybrid cloud environments (Azure and AWS), aligning with NIST and … CIS best practices Proactively monitor systems and respond to security alerts, investigating issues across endpoint, identity, and infrastructure layers Support internal audits and compliance checks, maintaining security documentation and assisting with remediation efforts Collaborate with infrastructure and cloud engineering teams to ensure security principles are embedded within project delivery Manage and fine-tune tooling across endpoint protection More ❯

immediate impact within a high-performing financial firm? We're working with a globally respected investment manager known for its rigorous risk discipline and advanced technical stack, seeking a Security Engineer to play a hands-on role in strengthening identity, access, and cloud security infrastructure. This is a rare opportunity to join a close-knit, London-based team … with direct ownership over security tooling, architecture and operations - all within a fast-paced, high-stakes trading environment... Key Responsibilities Take ownership of Identity and Access Management (IAM) platforms, including Entra ID (Azure AD), ensuring secure access and role governance across systems Design and implement security controls for hybrid cloud environments (Azure and AWS), aligning with NIST and … CIS best practices Proactively monitor systems and respond to security alerts, investigating issues across endpoint, identity, and infrastructure layers Support internal audits and compliance checks, maintaining security documentation and assisting with remediation efforts Collaborate with infrastructure and cloud engineering teams to ensure security principles are embedded within project delivery Manage and fine-tune tooling across endpoint protection More ❯

immediate impact within a high-performing financial firm? We're working with a globally respected investment manager known for its rigorous risk discipline and advanced technical stack, seeking a Security Engineer to play a hands-on role in strengthening identity, access, and cloud security infrastructure. This is a rare opportunity to join a close-knit, London-based team … with direct ownership over security tooling, architecture and operations - all within a fast-paced, high-stakes trading environment... Key Responsibilities Take ownership of Identity and Access Management (IAM) platforms, including Entra ID (Azure AD), ensuring secure access and role governance across systems Design and implement security controls for hybrid cloud environments (Azure and AWS), aligning with NIST and … CIS best practices Proactively monitor systems and respond to security alerts, investigating issues across endpoint, identity, and infrastructure layers Support internal audits and compliance checks, maintaining security documentation and assisting with remediation efforts Collaborate with infrastructure and cloud engineering teams to ensure security principles are embedded within project delivery Manage and fine-tune tooling across endpoint protection More ❯

everybody for who they are and what they bring to the table, supporting one another as we continue to deliver for our customers. LI-KS1 Create & Maintain an information security management system (ISMS) capable of demonstrating compliance against internal security requirements and external commitments including certification and regulatory requirements. Provide subject matter expertise in the application of established … to any new or existing programme of work. Prepare and support internal and/or external compliance audit activities. Manage remediation of any audit (internal & External) non-conformities. Ensure security policies (on a risk-based approach) are produced, signed off by relevant stakeholders, published, and communicated. Also, ensure that policies are managed throughout their lifecycle and updated through yearly … or ad-hoc reviews. Produce relevant security standards documentation in consultation with Technical teams. Lead on providing information to Three UK Customers (B2B) regarding Three UK's security practices. Support proactive and effective oversight of technology and security risk management frameworks, methodologies, processes, assurance, remediation, and reporting activities across the company. Assist in designing, building, and implementing More ❯

Global major capital projects firm with operations across all sectors require an IT Security Specialist. Working with the IT Infrastructure team to provide advice and guidance on IT security and further develop IT policies and processes across a multi-region infrastructure consisting of 4000+ staff and 70+ sites. Education Requirements - NA Industry - Capital Infrastructure Projects Job Location … components. This role shall be responsible for gathering requirements, designing and implementing enterprise-wide solutions. You will be required to proactively improve and provide advice and guidance on information security matters. This position also entails support and development of the company's IT policies and security solutions. Essential Skills: Comprehensive experience including in-depth knowledge, in a security or risk management role. An excellent understanding of enterprise information security and in-depth knowledge of standards including Cyber Essentials, ISO 27001, 27002 etc., Data Protection Act and the General Data Protection Regulation. Good understanding of security testing principles, including experience of penetration testing, identifying, resolving and reporting risks. Technical security experience with the following - Microsoft More ❯

We’re seeking an experienced Cyber Security Specialist with a strong background in Operational Technology (OT) and Industrial Control Systems (ICS) to play a key role in enhancing cyber resilience across critical environments. This is an exciting opportunity for someone who understands the unique challenges of securing complex, real-world industrial systems and wants to drive meaningful impact … across engineering, operations, and security functions. Key Responsibilities: Develop and implement OT/ICS cybersecurity practices across critical infrastructure Identify, assess, and support remediation of vulnerabilities within OT environments Collaborate with engineering, operations, and IT teams to embed cyber resilience Support compliance with relevant frameworks and standards (IEC 62443, NIS, OG86, CAF, etc.) Monitor and improve security controls … networks, and access management Assist in incident response involving operational systems Contribute to policy development, governance, and security awareness initiatives Engage with third parties and suppliers to ensure aligned security expectations What We’re Looking For: Proven experience in securing OT, ICS, or industrial environments Strong understanding of cybersecurity principles, risk, and network security Ability to work More ❯

We’re seeking an experienced Cyber Security Specialist with a strong background in Operational Technology (OT) and Industrial Control Systems (ICS) to play a key role in enhancing cyber resilience across critical environments. This is an exciting opportunity for someone who understands the unique challenges of securing complex, real-world industrial systems and wants to drive meaningful impact … across engineering, operations, and security functions. Key Responsibilities: Develop and implement OT/ICS cybersecurity practices across critical infrastructure Identify, assess, and support remediation of vulnerabilities within OT environments Collaborate with engineering, operations, and IT teams to embed cyber resilience Support compliance with relevant frameworks and standards (IEC 62443, NIS, OG86, CAF, etc.) Monitor and improve security controls … networks, and access management Assist in incident response involving operational systems Contribute to policy development, governance, and security awareness initiatives Engage with third parties and suppliers to ensure aligned security expectations What We’re Looking For: Proven experience in securing OT, ICS, or industrial environments Strong understanding of cybersecurity principles, risk, and network security Ability to work More ❯

We’re seeking an experienced Cyber Security Specialist with a strong background in Operational Technology (OT) and Industrial Control Systems (ICS) to play a key role in enhancing cyber resilience across critical environments. This is an exciting opportunity for someone who understands the unique challenges of securing complex, real-world industrial systems and wants to drive meaningful impact … across engineering, operations, and security functions. Key Responsibilities: Develop and implement OT/ICS cybersecurity practices across critical infrastructure Identify, assess, and support remediation of vulnerabilities within OT environments Collaborate with engineering, operations, and IT teams to embed cyber resilience Support compliance with relevant frameworks and standards (IEC 62443, NIS, OG86, CAF, etc.) Monitor and improve security controls … networks, and access management Assist in incident response involving operational systems Contribute to policy development, governance, and security awareness initiatives Engage with third parties and suppliers to ensure aligned security expectations What We’re Looking For: Proven experience in securing OT, ICS, or industrial environments Strong understanding of cybersecurity principles, risk, and network security Ability to work More ❯

Security & Information Risk Assessor (SIRA) – Government Client – SC Cleared Location: London (2 days/week on-site – London) Clearance: Active SC Clearance (valid beyond 2028) – Essential Contract: Initial until April 2026 (with extension likely) £500 per day inside IR35 Join a high-impact national security programme with a major government client as a Security & Information Risk Assessor … SIRA) . You’ll be part of a 15-strong cyber function driving security assurance across complex technical deliveries and programme workstreams. Key Responsibilities: Provide expert security assurance guidance to delivery teams and senior stakeholders. Lead risk assessments and recommend controls in line with NIST, ISO 27001 and HMG frameworks. Navigate systems and services through the full security accreditation and assurance lifecycle . Influence and collaborate effectively with engineers, architects, and project managers. Contribute to the maturity and evolution of the wider security assurance function. Essential Skills & Experience: Proven SIRA experience within complex government or critical national infrastructure environments. Deep understanding of NIST , security frameworks, and risk assessment methodologies. Strong ability to translate technical risk More ❯

Security & Information Risk Assessor (SIRA) – Government Client – SC Cleared Location: London (2 days/week on-site – London) Clearance: Active SC Clearance (valid beyond 2028) – Essential Contract: Initial until April 2026 (with extension likely) £500 per day inside IR35 Join a high-impact national security programme with a major government client as a Security & Information Risk Assessor … SIRA) . You’ll be part of a 15-strong cyber function driving security assurance across complex technical deliveries and programme workstreams. Key Responsibilities: Provide expert security assurance guidance to delivery teams and senior stakeholders. Lead risk assessments and recommend controls in line with NIST, ISO 27001 and HMG frameworks. Navigate systems and services through the full security accreditation and assurance lifecycle . Influence and collaborate effectively with engineers, architects, and project managers. Contribute to the maturity and evolution of the wider security assurance function. Essential Skills & Experience: Proven SIRA experience within complex government or critical national infrastructure environments. Deep understanding of NIST , security frameworks, and risk assessment methodologies. Strong ability to translate technical risk More ❯

Security & Information Risk Assessor (SIRA) – Government Client – SC Cleared Location: London (2 days/week on-site – London) Clearance: Active SC Clearance (valid beyond 2028) – Essential Contract: Initial until April 2026 (with extension likely) £500 per day inside IR35 Join a high-impact national security programme with a major government client as a Security & Information Risk Assessor … SIRA) . You’ll be part of a 15-strong cyber function driving security assurance across complex technical deliveries and programme workstreams. Key Responsibilities: Provide expert security assurance guidance to delivery teams and senior stakeholders. Lead risk assessments and recommend controls in line with NIST, ISO 27001 and HMG frameworks. Navigate systems and services through the full security accreditation and assurance lifecycle . Influence and collaborate effectively with engineers, architects, and project managers. Contribute to the maturity and evolution of the wider security assurance function. Essential Skills & Experience: Proven SIRA experience within complex government or critical national infrastructure environments. Deep understanding of NIST , security frameworks, and risk assessment methodologies. Strong ability to translate technical risk More ❯

Role: At Deliveroo, our mission is to build the definitive food company by transforming how our customers eat, making food more convenient and accessible. To Achieve this, we prioritise security to protect the data and money of our customers, employees, partners, riders, and investors. As a technology-driven leader in a rapidly expanding industry, we value autonomy, ownership, and … innovation. Our small team makes a significant impact, tackling some of the most intriguing challenges out there. We are seeking a pragmatic and motivated Security Compliance Specialist with a solid understanding of security policies, standards, awareness and compliance. In this hands-on role, you will support the development, implementation, and compliance monitoring of our information security policy suite. You will work on a variety of security policy implementation projects, directly influencing how Deliveroo operates securely, and engaging with stakeholders across the business to drive higher maturity. What You'll Be Doing: Develop and implement information security policies, standards, and guidance in collaboration with stakeholders. Ensure compliance with industry standards such as NIST CSF More ❯

Specialist Technical Account Manager - Security and Compliance, EMEA EU North Are you a technologist with deep expertise in Cloud Security and Compliance? We're looking for Security and Compliance experts to help customers build confidence and capability to operate their most critical and sensitive workloads at scale on AWS. As a Specialist Technical Account Manager … STAM), you act as a trusted customer advisor and strategist for security and compliance. This is a post-sales advisory role within our Enterprise Support team, where you can further develop your technical, leadership, and consulting skills while working with organizations facing sophisticated security and compliance challenges. You'll provide strategic guidance to customers on implementing robust security controls, compliance frameworks, and governance models, applying your expertise of best practices to help reduce security risks, strengthen compliance posture, and allow customers to accelerate their journey to their business/security outcomes on AWS. You'll help customers navigate complex regulatory requirements, design resilient cloud architectures that meet/exceed compliance standards, and implement effective security More ❯

Security Assurance Specialist, AWS Security, Europe Job ID: AWS EMEA SARL (UK Branch) AWS is seeking a Security Assurance Specialist who will work with the AWS Security Principal for UK/Ireland to drive the strategy that enables every customer, in every sector of the United Kingdom to use AWS cloud services in alignment … the financial services, telecommunications, and energy sectors. If you have a deep understanding of cybersecurity, resilience and how those concepts apply to the UK Financial Services & Markets Act, Telecommunications Security Act, Cyber Security & Resilience Bill and other legislation, and you are passionate about building and sustaining trust with our customers, then this role is for you. You will … all sectors of your region. And you'll translate that understanding to teams in engineering, operations, audit, policy, legal and sales. You'll recognise that success and value in security is measured by the pace of innovation, and the safe management of risk. You'll aspire to change the experience of security assurance to be more valuable and More ❯

Full time onsite in Oxford area Cisco Senior Cyber Security Specialis As part of IT Operations, the Cyber Security specialist primary responsibility is to lead and manage the cyber security strategy and day to day cyber security operations. This is a hands-on role (80%) and involves leveraging Cisco's full security suite to … develop and implement comprehensive security layers, policies, procedures, and protocols aimed at protecting our digital assets and employees from modern cyber threats. Essential Requirements: Must have strong experience in CISO's security suit Cyber Security and Infrastructure Architecture Implementation and Deployment of Cyber security solutions Monitoring and Performance Tuning Documentation and Compliance for IT policies and … procedures Minimum of 8 years of experience with a senior L3 role in IT Cisco certified at a minimum of CCNP level or CCIE CISSP certified - Information Systems Security Professional More ❯

Senior Network Specialist with Security and Cisco ?" City London Our Client urgently requires a Senior Network Specialist with heavy background in Network Security on Cisco and Microsoft. The security and support of the company’s network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that … Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In … CISCO multilayer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS/RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. More ❯

Senior Network Specialist with Security and Cisco - City London Our Client urgently requires a Senior Network Specialist with a heavy background in Network Security on Cisco and Microsoft. The security and support of the company's network is paramount. This is predominantly a support role (BAU) with the design of scalable solutions deliverable through projects … Support IPS deployment for European branches. Develop, maintain and deliver global standards to all networking devices. Remediate Penetration Test results. Ensure seamless migration of network estate to newly adopted security framework. General Skills: Experience working within mission-critical environments. Experience in operational deployments. Datacentre cabling and racking of equipment. Technical Skills you need to bring to the table: In … multilayer switches and routers, including 6500s. CISCO certification, ideally CCNP. CISCO CSM. VLAN segregation. McAfee HIPS, Trend Micro. Centralised authentication service (AAA). SafeNet Ethernet Encryptor. RADIUS/RSA. Security certification (advantageous). You will also need to have an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. More ❯

Centurum is seeking a Computer Security System Specialist who will provide expertise following the Risk Management Framework (RMF) and applying it across program and system cybersecurity activities. Apply federal and agency policies to cybersecurity processes, documentation, and continuous monitoring. Assist with preparing packages for system Authority to Operate (ATO). Perform Assessment and Authorization (A&A) and Independent … Ensure access controls and elevated user privileges are monitored and tracked. Assist with cyber inspections, audits, and readiness reviews. This will be a hybrid role - meaning that the Computer Security System Specialist may be required to be on-site up to three days per week at the Quantico Corporate Center in Stafford. The Computer Security System Specialist … into PowerPoint slides, and host TEAMS meeting. Using Power Automate, prepare audit reports for DCI IC4 in order to facilitate deactivation of inactive GCSS-MC user accounts. Support Annual Security Reviews (ASR). Education: HS Diploma or equivalent. This position is required to have and maintain a Secret US DoD security clearance. Required Experience: Six (6) years of More ❯

Job Title: Firewall Engineer - Network Security Specialist Location: Leeds Type: Full-Time | Reports To: Network Operations Manager/Head of Managed Services Salary: £45,000 Shift Pattern: Rotating shifts or business hours (based on operational needs) About Us We are a leading cybersecurity reseller and MSP delivering end-to-end security solutions. Our expert team powers proactive … You will be the frontline technical expert in our 24/7 Network Operations Center, owning the daily monitoring, configuration, troubleshooting, and incident resolution of client Firewalls and network security infrastructure. This hands-on position demands sharp technical skills and the ability to thrive in a fast-paced, client-focused environment. What You'll Do Manage & Monitor: Operate client … Firewalls, VPNs, and network devices using advanced monitoring platforms and vendor tools. Configure & Update: Implement Firewall rule changes, security policies, NAT, and routing on Check Point, Fortinet, or Palo Alto gear. Troubleshoot & Resolve: Investigate connectivity, performance, and security incidents swiftly, meeting SLA requirements. Maintain & Optimize: Conduct regular health checks and maintenance of Firewall appliances and infrastructure. Collaborate: Work More ❯

Our client is seeking a Cyber Security Specialist for a 12-month rolling contract . The role involves investigating cyber intrusions by insiders, competitors, criminal groups, and foreign governments. The specialist will leverage in-depth knowledge of the cyber environment to investigate, mitigate, and establish processes and procedures to address intrusions. Additionally, proactive cyber risk assessments may … be conducted to identify vulnerabilities and design security solutions to protect proprietary and confidential data and systems. Level: Level: A Specialist Professional (P4) - a recognized subject matter expert typically achieved through advanced education and extensive work experience. Responsibilities include: Managing large projects or processes with limited oversight. Coaching, reviewing, and delegating work to lower-level professionals. Addressing difficult More ❯

Cloud Security Specialist - Permanent | Hybrid | UK Bestman Solutions is working with a leading customer data science company to hire a Cloud Security Specialist for its global information security team. This is an exciting opportunity to play a key role in securing complex, cloud-first environments within a data-rich, high-scale business — helping protect critical … across global platforms. What You’ll Be Doing Leading threat detection and incident response across GCP environments Building and refining cloud-native detections using Kusto Query Language (KQL) Driving security automation and Infrastructure-as-Code practices Enhancing cloud visibility through effective logging, monitoring, and threat modelling Collaborating with SOC analysts, engineers, and data teams to secure workloads and services … Performing proactive threat hunts and maturing detection logic over time Key skills and experience include: Cloud security expertise in Google Cloud Platform Hands-on experience with cloud-native tools (e.g., Defender for Cloud, GCP Security Command Center) Detection engineering using KQL, particularly with Microsoft Sentinel Familiarity with Kubernetes, Docker, and securing containerised services Understanding of Zero Trust Architecture More ❯

Cloud Security Specialist - Permanent | Hybrid | UK Bestman Solutions is working with a leading customer data science company to hire a Cloud Security Specialist for its global information security team. This is an exciting opportunity to play a key role in securing complex, cloud-first environments within a data-rich, high-scale business — helping protect critical … across global platforms. What You’ll Be Doing Leading threat detection and incident response across GCP environments Building and refining cloud-native detections using Kusto Query Language (KQL) Driving security automation and Infrastructure-as-Code practices Enhancing cloud visibility through effective logging, monitoring, and threat modelling Collaborating with SOC analysts, engineers, and data teams to secure workloads and services … Performing proactive threat hunts and maturing detection logic over time Key skills and experience include: Cloud security expertise in Google Cloud Platform Hands-on experience with cloud-native tools (e.g., Defender for Cloud, GCP Security Command Center) Detection engineering using KQL, particularly with Microsoft Sentinel Familiarity with Kubernetes, Docker, and securing containerised services Understanding of Zero Trust Architecture More ❯

Cloud Security Specialist - Permanent | Hybrid | UK Bestman Solutions is working with a leading customer data science company to hire a Cloud Security Specialist for its global information security team. This is an exciting opportunity to play a key role in securing complex, cloud-first environments within a data-rich, high-scale business — helping protect critical … across global platforms. What You’ll Be Doing Leading threat detection and incident response across GCP environments Building and refining cloud-native detections using Kusto Query Language (KQL) Driving security automation and Infrastructure-as-Code practices Enhancing cloud visibility through effective logging, monitoring, and threat modelling Collaborating with SOC analysts, engineers, and data teams to secure workloads and services … Performing proactive threat hunts and maturing detection logic over time Key skills and experience include: Cloud security expertise in Google Cloud Platform Hands-on experience with cloud-native tools (e.g., Defender for Cloud, GCP Security Command Center) Detection engineering using KQL, particularly with Microsoft Sentinel Familiarity with Kubernetes, Docker, and securing containerised services Understanding of Zero Trust Architecture More ❯

Cloud Security Specialist - Permanent | Hybrid | UK Bestman Solutions is working with a leading customer data science company to hire a Cloud Security Specialist for its global information security team. This is an exciting opportunity to play a key role in securing complex, cloud-first environments within a data-rich, high-scale business — helping protect critical … across global platforms. What You’ll Be Doing Leading threat detection and incident response across GCP environments Building and refining cloud-native detections using Kusto Query Language (KQL) Driving security automation and Infrastructure-as-Code practices Enhancing cloud visibility through effective logging, monitoring, and threat modelling Collaborating with SOC analysts, engineers, and data teams to secure workloads and services … Performing proactive threat hunts and maturing detection logic over time Key skills and experience include: Cloud security expertise in Google Cloud Platform Hands-on experience with cloud-native tools (e.g., Defender for Cloud, GCP Security Command Center) Detection engineering using KQL, particularly with Microsoft Sentinel Familiarity with Kubernetes, Docker, and securing containerised services Understanding of Zero Trust Architecture More ❯

Role Overview We are looking for an experienced OT Cyber Security Specialist to help strengthen cyber resilience across operational technology environments. You will play a key role in identifying and managing cyber risks in OT systems while working closely with internal teams and external partners to improve overall security posture. This role is ideal for someone who … the intersection of engineering, operations, and cybersecurity and wants to make a meaningful impact in complex, real-world environments. Key Responsibilities Support the development and implementation of OT cyber security practices Contribute to the identification and remediation of vulnerabilities in OT systems Work with engineering, operations, and IT teams to embed cyber resilience across environments Help monitor and improve … security controls, networks, and access policies Assist in the response to cyber incidents affecting operational systems Maintain documentation and contribute to policy, governance, and awareness efforts Engage with third parties, suppliers, or clients as needed to ensure security alignment Stay informed on emerging threats, technologies, and best practices in the OT space What We're Looking For Experience More ❯