26 to 48 of 48 Principal Security Engineer Jobs

Principal Product Security Engineer

Location
Hastings, England, United Kingdom
systems with the information and control systems required by the aircrew to meet the demanding operational needs of these aircraft. Job Description Join our security engineering team and help deliver future combat-air capability as part of the GCAP programme. You will work on complex, safety-critical mission-computing … systems, embedding security into the product architecture and engineering lifecycle. Working alongside specialists across systems, software, hardware, safety and certification, you will help ensure that security risks are identified, understood and addressed through robust engineering solutions. This is an opportunity to influence the design of advanced airborne technology ...

Principal Product Security Engineer — IA & Risk Leader

Location
Barrow-in-Furness, England, United Kingdom
Matchtech is seeking a Principal Engineer - Product Security to provide senior technical leadership across Information Assurance and Product Security within a highly regulated engineering programme. The role is delivery-focused, supporting design maturity, programme readiness through security governance, security case development and risk management. ...

Principal/Lead Systems Engineer (Security)

Location
Southampton, England, United Kingdom
## Principal/Lead Systems Engineer (Security)Applylocations: GB - Southamptontime type: Full timeposted on: Posted Todayjob requisition id: R0023947**Job Description:****Your impact**Are you a Systems Engineer who loves contributing to the UKs Defence Industry and making impactful change? Leonardo has a fantastic opportunity … Engineer to be responsible for the design and development of security related functionality required to support our next generation airborne communications system. This role will involve engaging with other areas of the project, the project security function, international partners and the customer. You will be working ...

Principal Security Engineer - Safety

Hiring Organisation
I3 Resourcing Limited
Location
City, Birmingham, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
Principal Functional Safety & Cyber Security Engineer UK Hybrid & flexible working Birmingham £75,000 In a nutshell, you're there to make sure the product being designed is both safe and secure . Day to day, work alongside the systems, hardware and software engineers , reviewing designs and requirements ...

Principal Security Engineer

Location
Brackley, England, United Kingdom
Role Brackley, UK We have an exciting opportunity within our Enterprise Technology team for a Principal Information Security Engineer. This is a senior, hands‐on role. Our in-house security capability continues to mature, and there is a real opportunity to shape it. This role is about … establishing the foundations, including the technical security frameworks, standards and operating practices that underpin how we protect systems across both factory and trackside environments, while remaining hands‐on to turn them into reality. You’ll set the technical direction for security engineering and operations, strengthen controls across ...

Principal Functional Safety & Cyber Security Engineer

Location
United Kingdom
Principal Functional Safety and Cyber Security Engineer UK Vacancy listed 04/06/2026 Role Purpose Deliver Functional Safety and Cyber Security functions, working cross-domain (Systems, HW, SW) to ensure development of product aligns with company’s and customers functional safety and cyber security … engineers and external suppliers, to deliver designs within the ISO 26262 and ISO 21434 (and other derived standards) frameworks. Ensuring compliance, for safety and security concepts along with technical, software and hardware safety requirements. Safety and security and Failure analysis (HARA/TARA/FMEA/FTA/ ...

Principal Product Security Engineer - Hybrid Defense Tech

Location
Lincoln, England, United Kingdom
Leonardo UK Ltd is seeking a Principal Product Security Engineer to join the Combat Air and Electronic Warfare division. You will implement security across the product lifecycle, advising multidisciplinary teams and aligning with governance standards to protect defence technologies. The role requires experience in security risk management, RMF/NIST, and recognised security bodies. You will liaise with security experts and managers, contribute to security strategy, and support pre-employment #J-18808-Ljbffr ...

Principal Software Engineer (Java) - Security - Elasticsearch

Location
United Kingdom
# Principal Software Engineer (Java) - Security - ElasticsearchElastic · elastic.coCategory: Security EngineeringLocation: United KingdomLevel: Staff/Principal## Quality of lifeWhat the posting states. Hover or tap a perk to see the line it came from.* 16 weeks parental leave* Retirement matchElastic, the Search AI Company, enables everyone … taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.What is The RoleWe are seeking a Principal Software Developer to join the Elasticsearch Security ...

Principal Security Engineer - Fuzzing Specialist

Location
Cambridge, England, United Kingdom
Overview: As a Security Engineer – Fuzzing Specialist, you will own and evolve our coverage-guided fuzzing program. Your mission is to uncover hard-to-reach security flaws before attackers do, drive fixes to closure, and help product teams to embrace dynamic testing like fuzzing. You’ll scout … share insights— from coverage metrics to post-mortems to create data-driven security. Required Skills and Experience: 1+ years in application or product security with a deep focus on coverage-guided fuzzing. Hands‐on expertise with at least one modern fuzzing framework (e.g., libFuzzer, AFL++, Honggfuzz). Proficient ...

Principal Security Engineer

Location
Hastings, England, United Kingdom
with the information and control systems required by the aircrew to meet the demanding operational needs of these aircraft. Responsibilities for this Position Lead security architecture for GCAP mission systems Define security requirements and secure-by-design approaches Lead threat modelling, risk assessment and accreditation activities Provide technical … defence capability and international collaboration Qualifications Degree level education or equivalent in a relevant engineering discipline Knowledge of Secure by Design and product security standards Security architecture and cryptography expertise Demonstrated high levels of motivation, integrity, and professionalism Flexibility, innovation, and commitment to delivery in a fast‐paced ...

Principal Security Operations Engineer – SOC & Cloud

Location
West of England, England, United Kingdom
Deloitte Technology & Transformation seeks a Principle Security Operations Engineer to lead security operation engineering for clients and internal teams. You will shape detections, responses and tooling, driving end-to-end delivery of SOC capabilities and preventative cloud security advisory services. You will guide a skilled team … advance data-driven security models and collaborate with client stakeholders to align security outcomes with business needs. #J-18808-Ljbffr ...

Principal Engineer, Enterprise Platform & Security

Location
London Borough of Islington, England, United Kingdom
FundApps is seeking a Principal Engineer in London to set the technical direction across the Surveillance estate while remaining hands-on. You’ll review architecture, write code, and participate in incidents, balancing deep technical work with leadership responsibilities. You’ll drive architectural coherence, reliability, and change safety, ensuring ...

Principal Security Engineer - Java & Elasticsearch

Location
United Kingdom
Elastic seeks a Principal Software Developer to lead Elasticsearch security, focusing on authentication, authorization, and tenant isolation. You will shape security across the core engine and collaborate with product and engineering leadership. You will drive scalable RBAC/ABAC models, apply cryptographic controls, and mentor engineers while ...

Principal Browser Security Engineer – Hybrid Cambridge

Location
Cambridge, England, United Kingdom
Wolf Security in Cambridge is seeking a Principal Browser Software Engineer to join our R&D team. You will design and develop browser-based security features for our micro-virtualization platform, contributing to secure browsing across Chromium-based and Firefox-based environments. The role combines hands … C++ development with collaboration across security researchers, product teams and engineers, with a hybrid work model requiring on-site presence in Cambridge three days a week. #J-18808-Ljbffr ...

Principal/Lead Systems Engineer (Security)

Hiring Organisation
Hackajob Ltd
Location
Southampton, Hampshire, South East, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
client is a global aerospace, defence and security company. Job Description: Your impact Are you a Systems Engineer who loves contributing to the UKs Defence Industry and making impactful change? Our client has a fantastic opportunity for an Engineer to be responsible for the design and development … security related functionality required to support our next generation airborne communications system. This role will involve engaging with other areas of the project, the project security function, international partners and the customer. You will be working on real Engineering problems, designing and developing solutions that ...

Principal Software Engineer (Java) - Security - Elasticsearch

Location
United Kingdom
taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud‐based solutions for search, security, and observability help organizations deliver on the promise of AI. What is The Role: We are seeking a Principal Software Developer to join … Elasticsearch Security team. In this role, you will lead the architecture and design of Elasticsearch’s main features. These features include authentication, authorization, and tenant isolation. You will work with engineering and product leaders at Elastic. Your goal is to provide high-performance security at all levels. This ...

Principal Software Engineer Integrity and Security Strategy

Location
City of Westminster, England, United Kingdom
Meta seeks experienced engineers to join the Central Integrity team as Principal Engineer (Technical Leadership). You will own the multi-year strategy for account and entity compromise across the Family of Apps, collaborating with executive leadership and partner orgs to reduce real-world harm fastest. You will ...

Principal Solutions Engineer - Identity Security, Hybrid

Location
Greater London, England, United Kingdom
Entrust, a leader in identity security solutions, seeks a Principal Solutions Engineer to own the technical engagement with a portfolio of EMEA Key Accounts and select US partners. You will drive API/SDK integrations, guide multi-stakeholder negotiations, and influence product direction while mentoring a global ...

Principal Solutions Engineer: Identity Security for EMEA/US

Location
Greater London, England, United Kingdom
Entrust is seeking a Principal Solutions Engineer based in the United Kingdom to own the technical side of a portfolio of EMEA Key Accounts and to serve as the focal point for partner engagements in the US. You will lead complex technical conversations, mentor peers, and influence product ...

Principal/Lead Systems Engineer (Security)

Hiring Organisation
Hackajob Ltd
Location
Southampton, Hampshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
client is a global aerospace, defence and security company. Job Description: Your impact Are you a Systems Engineer who loves contributing to the UKs Defence Industry and making impactful change? Our client has a fantastic opportunity for an Engineer to be responsible for the design and development … security related functionality required to support our next generation airborne communications s click apply for full job details ...

Principal DevOps Engineer - Hybrid Cloud & Security Lead

Location
West of England, England, United Kingdom
Leonardo UK Ltd is recruiting a Principal DevOps Engineer to lead engineers and shape secure automation across hybrid and cloud environments. You will drive CI/CD design, infrastructure as code and container orchestration while embedding security into delivery. We seek a leader who can balance practical ...

Principal Data Governance & Security Engineer

Location
Caddington, England, United Kingdom
Leonardo UK Ltd in the United Kingdom is seeking a Principal Data Manager to govern and safeguard critical engineering and programme data across defence and aerospace programmes. You will ensure data is identified, controlled, and traceable throughout the product lifecycle. Reporting to the Lead Configuration & Data Manager, you will ...

Senior/Principal Software Engineer - Cloud & Security SC/DV

Location
Cheltenham, England, United Kingdom
Gemba Advantage is seeking Senior and Principal Software Engineers to design and deliver secure, scalable cloud-native services in small teams. You will remain hands-on while guiding architecture and standards, mentoring peers, and collaborating with customers. The role requires active or recently active SC/DV clearance ...