1 to 25 of 37 Senior Security Engineer Jobs in the UK

Senior Security Engineer 6 month FTC London to £100k Are you a Senior Security Engineer from an Infrastructure, Systems or Networking background? You could be progressing your career at a specialist commodities trading firm in a six month fixed term contract that is likely to extend. As a Senior Security Engineer you will implement and maintain robust security systems and protocols across the company's IT infrastructure, conducting risk assessments and vulnerability scans, mitigating vulnerabilities identified in penetration testing and implementing preventative measures to protect against cyber threats with a focus on WAF, IDS, IPS, Windows Security and Palo Alto firewalls. You also manage the 3rd party SOC … office, there is a smart, professional dress code. Please note this role is on shift basis of either WFH days) and office days). About You You are a Senior Security Engineer from an Infrastructure, Systems or Networking background You have strong experience with CrowdStrike, Palo Alto firewalls, VPN firewalls, Windows security e.g. EntraID, DNS, Active More ❯

Senior Application Security Engineer Location: Hybrid working or homeworking with view to attend office occasionally Salary: £60,000 – £70,000 per annum Bonus: Discretionary bonus of up to 10% Are you passionate about securing modern applications and cloud environments? We’re looking for a Senior Application Security Engineer to join my client's growing … team and play a key role in shaping the security posture of our organisation. About the Role As a Senior Application Security Engineer, you’ll bring deep expertise in application security testing, cloud security, and secure development practices. You’ll work closely with IT, development, and project teams to embed security into every … stage of the software development lifecycle and drive a risk-based approach to vulnerability management. Key Responsibilities Lead application security initiatives across cloud-native and enterprise environments. Promote secure design principles, threat modelling, and best practices across teams. Own and evolve the technical vulnerability management programme. Implement and support security controls, particularly within Azure cloud environments. Evaluate and More ❯

Job Role: Senior Security Engineer - CIAM Location: Hybrid - City of London Salary: £100,000 - £120,000 + Bonus Are you an experienced Security Engineer with a passion for safeguarding systems and driving innovation in identity and access management? Do you thrive in complex environments where you can solve critical security challenges and influence long … re driven by excellence, collaboration, and the opportunity to make an impact on a global financial institution, this could be the perfect role for you. Join us as a Senior Security Engineer, where you'll help shape a market-leading digital platform and deliver secure, cutting-edge customer experiences. Ideal Candidate: Strong hands-on expertise with Hardware … Security Modules (HSM), AWS Secrets Manager, and certificate lifecycle management (rotation, revocation, automation) Experienced with GitLab CI/CD pipelines, AWS CLI, and automation tooling (Chef or similar) Proven background in Cloud Security, with deep knowledge of: - AWS security controls, policies, and automation - Role-based and attribute-based access controls - Cryptographic protocols and secure key lifecycle management More ❯

Senior Fire & Security Engineer Location: London (Field-Based) Salary: Up to £47,000 + Overtime & Benefits A leading national fire & security provider is seeking an experienced Senior Fire & Security Service Engineer to join their service team in London. This role focuses on complex maintenance, diagnostics and customer support across major commercial contracts, with … diagnostics Small remedial works and panel programming/resetting Supporting and mentoring junior or trainee engineers Completing compliance reports and certification to NSI/BAFE standards Acting as a senior point of contact on key London sites Experience & Requirements Proven experience as a Fire & Security Service Engineer Strong knowledge of fire alarm panels (e.g. Advanced, Kentec, Gent … standby/call-out rota 25 days holiday + bank holidays Pension scheme Uniform, PPE, tools & test equipment provided Ongoing manufacturer and advanced technical training Progression routes to Lead Engineer, Commissioning or Supervisor Employee recognition and referral schemes Why Join? This is a senior-level opportunity with a company investing heavily in engineering teams, training and long-term More ❯

Senior Application Security Engineer Cambridgeshire Based - 1-2 days a week onsite We are looking for an experienced Senior Application Security Engineer to join our client's expanding Cyber Security team. This is an incredible opportunity to craft a world-class Application Security function , playing a critical role in embedding security within all stages of the development lifecycle. What you'll be doing: Becoming a key contributor to the Cyber team by focusing on application security architecture and implementing a robust risk management programme. Collaborating closely with different teams to devise plans, perform threat modelling, adopt architecture best practices, drive secure development lifecycles, and manage risk remediation. Providing expertise … in security best practices and compliance while undertaking hands-on security testing. Identifying application security risks and supporting requirements for new projects and system developments. Representing the Cyber team during review sprints to ensure application security is prioritised before deployment. Partnering with architecture and development teams to review application design and code for security vulnerabilities. More ❯

Senior ICS OT Cyber Security EngineerStone, Staffordshire – Hybrid + UK Wide TravelCompetitive Salary VIQU are working with a leading operational technology and digital transformation organisation delivering critical projects across energy, water, renewables, and manufacturing. The Senior ICS OT Cyber Security Engineer will secure and optimise industrial control systems, conduct threat assessments, penetration testing, and design … technical solutions to mitigate cyber risks. The role involves mentoring junior engineers, collaborating with stakeholders, with occasional travel to client sites and the Stone office. Key Responsibilities of the Senior ICS OT Cyber Security Engineer: Design and secure OT/ICS networks and cross-domain communications. Conduct threat modelling, vulnerability assessments, and red team exercises. Implement cybersecurity … solutions, audit systems, and ensure compliance with relevant frameworks. Mentor junior team members and support project delivery. Maintain strong client and stakeholder relationships. Key Requirements of the Senior ICS OT Cyber Security Engineer: Degree in Computer Science, Systems Engineering, or similar with 5+ years’ relevant experience. 2+ years’ experience in ICS/critical infrastructure cybersecurity. Knowledge of More ❯

A quick look at the role The Security Engineer will be responsible for monitoring our organisation's systems and networks. You will use reports and measures to identify and mitigate security risks, implement security responses, and monitor for potential threats. This is a hybrid role with a minimum of 2 days a week in the office. … Your core responsibilities Strategic design of security protocols and policies. Implement, review and maintain governance of IT security policies and procedures. Act as an ambassador as the Security lead within the business aiming to foster a secure culture. Oversee daily security operations to ensure prompt resolution of security incidents and supporting various security projects. … Take ownership and accountability or the Security function delivery of services to the business. Conduct regular system tests to ensure the effectiveness of security measures in line with industry standards. Monitor our networks and systems for security breaches or intrusions. Investigate security breaches and other cybersecurity incidents. Install security measures and operate software to protect More ❯

Portsmouth - hybrid (2-3 days on-site per week) Permanent Up to £78,500 + bonus This is a prime opportunity to design and engineer the core platforms behind a rapidly growing Security Operations Centre (SOC), blending hands-on technical work with automation and solution design. You’ll collaborate with analysts, architects, and customers to build reliable, scalable … systems that accelerate threat detection and response, all in a collaborative culture that invests in your growth, wellbeing, and career progression. Job Title: Senior Security Engineer Job Type: Permanent Salary: Up to £78,500 (DOE) + Bonus Working arrangement: Hybrid Office Location: Portsmouth As a Senior Security Engineer, you will: Design, deploy, and maintain … intelligence, and logging infrastructure). Develop and optimise detection use cases, correlation rules, and analytics content. Build and maintain automation workflows and integrations using automation platforms or custom scripting. Engineer secure log ingestion pipelines across hybrid cloud and on-prem environments. Support client onboarding, threat hunting, detection engineering, and process improvements. Mentor junior engineers and maintain documentation, diagrams, and More ❯

Job Title: Senior Network Security Engineer Location: Kidlington or Southampton Contract Type: Temporary Daily Rate: £450 - outside IR35 Contract Length: 16 months Join Our Team!Are you an experienced Network Security Engineer ready to make an impact in the public services sector? We are looking for talented individuals to join our client Thames Valley Police … at either their offices in Kidlington or the Hampshire Police Offices in Southampton. What You'll Do:As a Senior Network Security Engineer, you will play a crucial role in maintaining and enhancing our wide area and local area communications network infrastructure. Your expertise will ensure the security and efficiency of our network operations. Key Responsibilities … junior network engineers, fostering a culture of best practises within the technical team. What We're Looking For: Recent experience (within last two years) of a Network Administrator/Engineer role working with Cisco routers and switches with a minimum of five years experience within network engineering roles Able to articulate technical designs and principles to a non-technical More ❯

Job Title: Senior Network Security Engineer Location: Kidlington or Southampton Contract Type: Temporary Daily Rate: £450 - outside IR35 Contract Length: 16 months Join Our Team! Are you an experienced Network Security Engineer ready to make an impact in the public services sector? We are looking for talented individuals to join our client Thames Valley Police … at either their offices in Kidlington or the Hampshire Police Offices in Southampton. What You'll Do: As a Senior Network Security Engineer, you will play a crucial role in maintaining and enhancing our wide area and local area communications network infrastructure. Your expertise will ensure the security and efficiency of our network operations. Key Responsibilities … junior network engineers, fostering a culture of best practises within the technical team. What We're Looking For: Recent experience (within last two years) of a Network Administrator/Engineer role working with Cisco routers and switches with a minimum of five years experience within network engineering roles Able to articulate technical designs and principles to a non-technical More ❯

Job Title: Senior Network Security Engineer Location: Kidlington or Southampton Contract Type: Temporary Daily Rate: £450 - outside IR35 Contract Length: 16 months Join Our Team!Are you an experienced Network Security Engineer ready to make an impact in the public services sector? We are looking for talented individuals to join our client Thames Valley Police … at either their offices in Kidlington or the Hampshire Police Offices in Southampton. What You'll Do:As a Senior Network Security Engineer, you will play a crucial role in maintaining and enhancing our wide area and local area communications network infrastructure. Your expertise will ensure the security and efficiency of our network operations. Key Responsibilities … junior network engineers, fostering a culture of best practises within the technical team. What We're Looking For: Recent experience (within last two years) of a Network Administrator/Engineer role working with Cisco routers and switches with a minimum of five years experience within network engineering roles Able to articulate technical designs and principles to a non-technical More ❯

going places! This is where you come in. The Opportunity As IAG Loyalty evolves into a Platform as a Service business, we're looking for a talented and passionate Senior Application Security Engineer to join our security engineering team. You'll have a background in software engineering and a deep interest in application and API security. … You thrive on collaboration, enjoy helping others grow, and see security as an enabler - not a blocker. You'll be an AppSec advocate who supports our engineers in identifying and addressing security issues across the software development lifecycle. You'll be part of a small, dynamic team within the Product department that drives IAG Loyalty's digital transformation … also be required to work from one of our other office or partner locations, based on your role and 'to do' list. What you'll be doing As a Senior Application Security Engineer, you'll lead the application security practice within the IAG Loyalty security team, taking responsibility for key security KPIs in this More ❯

Job Title: Senior Application Security Engineer Salary: £70,000 Location: Reading/remote About the Organisation Join a fast-growing UK technology and consulting firm that's investing heavily in cutting-edge cyber security. With a strong focus on innovation, collaboration, and professional development, this company empowers its people to shape the future of secure digital transformation … ll be part of a business that values expertise, agility, and doing the right thing - where everyone has the opportunity to make a genuine impact. About the Role The Senior Application Security Engineer will play a key role in protecting the organisation's infrastructure, cloud platforms, and applications. Working within a highly technical and collaborative cyber team … supported by a 24/7 external SOC - you'll research, test, and implement next-generation security solutions to safeguard data and systems. This role offers the chance to lead on application and cloud security initiatives, influence secure design standards, and mentor colleagues in best practices. Key Responsibilities Lead application and cloud security initiatives, ensuring systems and More ❯

Job Title: Senior Application Security Engineer Salary: £70,000 Location: Reading/remote About the Organisation Join a fast-growing UK technology and consulting firm that's investing heavily in cutting-edge cyber security. With a strong focus on innovation, collaboration, and professional development, this company empowers its people to shape the future of secure digital transformation … ll be part of a business that values expertise, agility, and doing the right thing - where everyone has the opportunity to make a genuine impact. About the Role The Senior Application Security Engineer will play a key role in protecting the organisation's infrastructure, cloud platforms, and applications. Working within a highly technical and collaborative cyber team … supported by a 24/7 external SOC - you'll research, test, and implement next-generation security solutions to safeguard data and systems. This role offers the chance to lead on application and cloud security initiatives, influence secure design standards, and mentor colleagues in best practices. Key Responsibilities Lead application and cloud security initiatives, ensuring systems and More ❯

. Do you have hands-on ISO-27001 and security tool We are expanding our Information Security team presence into the European Union. This is an opportunity to become a key member of our team, supporting our commercial business lines. With a large part of the Intellectual Property (IP) technology team residing in Farringdon, this will strengthen the … collaboration between Information Security and Technology, especially as IP focuses on modernization of their AI products with new features and functions to enrich the users' experience. About the Role: The Senior Security Engineer will conduct research, design, and engineering tasks for a dedicated project in the European Union. This role requires the ability to identify, investigate … and resolve ISO-27001 security controls, along with hands-on expertise in Endpoint Detection & Response and Vulnerability and Compliance Management tools. Responsibilities: Security Requirements & Support: Define and document security requirements for new development efforts. Collaboration & Other Duties: Perform other duties as required. Requirements: Experience in information security or security operations, typically demonstrated over several years.Practical More ❯

Senior OT Cyber Security Engineer Full time - Permanent Staffordshire Are you an experienced Industrial Control Systems Cyber Security Engineer? Do you have a solid understanding of networks and cyber-secure infrastructure? Are you ready for a role where you can lead technically, shape solutions and work on high-impact projects? If that sounds like you … work & Green car scheme What will you be doing? You'll design and secure operational technology networks across a range of industries. You'll solve complex digital and operational security problems facing Industrial Control Systems used within the nation's critical infrastructure cyber-landscape. You'll assess the robustness of cybersecurity architectures, technologies, and procedures within customer facilities. You … ll design comprehensive technical solutions that meet client requirements and implement the appropriate tools, technologies & processes to mitigate critical security risks (e.g., system and mobile antivirus software, encryption modules, patch management programs, insider threat protection, incident response plans, forensic capabilities, and regulation compliance). You'll conduct comprehensive attack path analysis and threat modelling, mapping adversary tactics and techniques More ❯

Senior Backend Engineer (Platform & Security) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. We are building a new category of … network-native B2C security, moving from reactive, in-call analysis to proactive, pre-call verification that stops fraud before it starts. This is not a typical backend role. You will be the Stability & Monetization Owner, the foundational engineer responsible for two of the most critical pillars of our platform : our monetization engine and our Zero Trust security … powers our entire freemium business model. This position offers a unique opportunity to build a globally-scalable, highly secure, and compliant platform from the ground up. If you believe security and privacy are non-negotiable product features and you are excited by the challenge of building the commercial and trust-based foundation of a new product category, this role More ❯

Please note this is for London, UK. You only need toapply to one location if there are multiple listed for the job. Apply Now The Work As a Senior Security Engineer, you will help Ripple design and build secure applications and infrastructure at scale. You will work closely with different Engineering teams to ensure we are building … securely to protect our business and our customers. What You'll Do Be a security advocate and domain expert within the organization and be able to communicate security risk and concepts to both technical and non-technical audiences. Lead initiatives with Engineering teams to optimize threat models and mitigate risks. Encourage a positive security culture across the … Engineering organization. Relentlessly champion for security outcomes on behalf of our customers. Work with other engineering leaders to embed security into day-to-day development processes. Help proactively assess security risk through product deep dives, threat modeling, and design, architecture and implementation reviews. Review and improve existing security processes related to product assessments, pen testing, and More ❯

Senior Backend Engineer (Platform & Security) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. We are building a new category of … network-native B2C security, moving from reactive, in-call analysis to proactive, pre-call verification that stops fraud before it starts. This is not a typical Back End role. You will be the Stability & Monetization Owner, the foundational engineer responsible for two of the most critical pillars of our platform: our monetization engine and our Zero Trust security … powers our entire freemium business model. This position offers a unique opportunity to build a globally-scalable, highly secure, and compliant platform from the ground up. If you believe security and privacy are non-negotiable product features and you are excited by the challenge of building the commercial and trust-based foundation of a new product category, this role More ❯

Senior Data Engineer (SQL Python AWS) Cheshire to £100k Are you a data technologist looking for an opportunity to progress your career in a hands-on, impactful role with lots of ownership? You could be joining a Cyber Security technology company and enjoying a huge range of perks and benefits from continual learning and self-development opportunities … including "buy any book" policy) through to health and well-being, enhanced paternity packages, generous holiday allowance, inclusive social events and much more. As a Senior Data Engineer you'll lead a significant data re-architecture project, with the autonomy to make the critical data architecture decisions, laying the foundations that will empower the entire business, from product … and analytics through to customer intelligence and commercial growth. You'll collaborate with the business and Data Analysts to expand on and re-engineer the data pipelines, building new scalable services within a modern cloud based (AWS) environment. There's a culture of software engineering excellence, with a collaborative team environment that values knowledge sharing and continual improvement. Location More ❯

Job Title: Senior Application Security EngineerSalary: £70,000Location: Reading/remote About the Organisation Join a fast-growing UK technology and consulting firm that's investing heavily in cutting-edge cyber security. With a strong focus on innovation, collaboration, and professional development, this company empowers its people to shape the future of secure digital transformation across a wide … ll be part of a business that values expertise, agility, and doing the right thing - where everyone has the opportunity to make a genuine impact. About the Role The Senior Application Security Engineer will play a key role in protecting the organisation's infrastructure, cloud platforms, and applications. Working within a highly technical and collaborative cyber team … supported by a 24/7 external SOC - you'll research, test, and implement next-generation security solutions to safeguard data and systems. This role offers the chance to lead on application and cloud security initiatives, influence secure design standards, and mentor colleagues in best practices. Key Responsibilities Lead application and cloud security initiatives, ensuring systems and More ❯

Stock Exchange (EXPN), we have a team of 22,500 people across 32 countries. Our corporate headquarters are in Dublin, Ireland. Learn more at experianplc.com. Job Description Experian, Global Security Office are looking for an experienced Senior Application Security Engineer to enhance our application security processes with emphasis on business engagement. You will be responsible … for static, SCA, and dynamic scanning, collaborating with software engineers, provide flaw mitigation recommendations, and implementing automated security controls throughout the development lifecycle and CI/CD pipelines. Ensure the Software Security Policy and Baseline requirements are met for new Agile deliveries and for legacy estate with flaws and issues managed throughout all stages of an applications' life. … This is a remote UK-based position reporting to the Manager of Application Security Main Responsibilities Collaborate with software engineers and leadership to address security risks and provide mitigation recommendations within the Secure Development Lifecycle (SDLC). Work with development teams to understand their needs and the risk profile for each application and customize solutions to meet the More ❯

Senior Test Engineer - National Security Job Description Posted Tuesday 30 September 2025 at 00:00 We are the Information Intelligence Group (IIG) of CACI UK, a specialist software consultancy providing new bespoke solutions to solve our customers complex operational problems. As our business continues to grow, we are interested in speaking with an experienced Senior Test … Engineer to join one of our live projects in our National Security Team. At IIG, there's no such thing as a typical solution - we're looking for talent that can keep up with our clients' challenges, and set the pace for new ideation. We value intelligence and fast learners, flexibility and excitement about tackling every new opportunity. … Our work is highly collaborative, so friendly relationship builders are vital to our teams. The Role: As a Senior Test Engineer, you will join one of our small, fast-paced, agile delivery teams. Working on one of our inflight projects, you will play a key role to ensure continuous automated testing is implemented, early and often, as a More ❯

Senior Backend Engineer (Platform & Security) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. We are building a new category of … network-native B2C security, moving from reactive, in-call a click apply for full job details More ❯

Senior AI Engineer/Developer (AI) Knutsford onsite to £130k Are you a technologist with a strong knowledge of AI and its practical uses within software engineering? You could be joining a scaling Cyber Security technology company and enjoying a huge range of perks and benefits from continual learning and self-development opportunities (including "buy any book … policy) through to health and well-being, enhanced paternity packages, generous holiday allowance, inclusive social events and much more. As a Senior AI Engineer you will drive the adoption of AI within the business, assessing how to effectively use AI to optimise production and then rolling out your recommendations across teams. You'll take ownership, working end-to … as OOP, Data Structures, Algorithms, Design Patterns You're collaborative, enjoy problem solving and are keen to pick up new skills What's in it for you: As a Senior AI Engineer/Developer you will earn a highly competitive package including: Salary to £130k 8% pension contribution Life Assurance and Income Protection Enhanced maternity/paternity packages More ❯