Mobile Application Senior Security Engineer

Company IconKlarna
Location IconLondon

Overview In this role you will lead offensive security testing for Klarna’s mobile apps, focusing on iOS and Android; you’ll work with engineering teams to turn findings into fixes and improve app hardening. You’ll apply MASVS/MASTG g...Read More>>.

Posted: September 30th, 2026
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Principal IT Security Engineer – Trading

Company IconQuant Capital
Location IconLondon

Overview In this role you will strengthen the firm’s security posture by owning Windows security engineering, endpoint protection, and automation at scale. You’ll work across Windows platforms, AD/Entra ID, PKI, and core infrastructure...Read More>>.

Posted: September 30th, 2026
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Cloud Security Engineer– Quant Trading

Company IconQuant Capital
Location IconLondon

Overview In this Cloud Security Engineer role, you will help design and secure the firm’s cloud-first infrastructure within a fast-paced, high-scale trading environment. You’ll work with Platform Engineering to integrate cloud and on-pr...Read More>>.

Posted: October 1st, 2026
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Corporate Security Engineering – Engineer Role

Company IconThe Bank of New York Mellon
Location Icon

Overview In this role you will be the expert engineer for BNY’s Physical Security platforms, focusing on operating and modernizing enterprise security systems. You’ll lead engineering efforts across global teams, migrating to Genetec fo...Read More>>.

Posted: October 1st, 2026
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Windows Security Engineer – Quant Trading

Company IconQuant Capital
Location IconLondon

Overview In questa role you will secure Windows platforms for a leading quantitative trading firm. You’ll design, test and implement security controls while guiding the Windows team and collaborating with the Cybersecurity group. The role...Read More>>.

Posted: October 1st, 2026
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Principal Security Engineer, Product & Infrastructure

Company IconPigment
Location IconLondon

Overview Join Pigment’s security team to strengthen protection for a fast-growing AI-powered platform. You will shape the security roadmap across product and infrastructure, working closely with product and engineering to implement defens...Read More>>.

Posted: October 1st, 2026
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Principal Security Engineer - Fuzzing Specialist

Company IconARM
Location IconCambridge

Overview In this role, you develop and advance Arm’s coverage-guided fuzzing program to uncover hard-to-reach security flaws and drive fixes. You’ll design high-performance fuzzing harnesses, build custom sanitisers, and lead data-drive...Read More>>.

Posted: October 1st, 2026
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Staff Security Engineer, Abuse Control

Company IconStripe
Location IconLondon

Overview As an Abuse Control Engineer on ACE, you design and prototype technical defenses to safeguard Stripe’s financial ecosystem from complex abuse. You translate threat intel into concrete controls and run experiments to balance risk...Read More>>.

Posted: October 1st, 2026
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Information Security Engineer - Classified Systems

Company IconLockheed Martin
Location IconAmpthill

Overview In this role you will lead Secure by Design across classified IT systems, ensuring security is integrated throughout the lifecycle and aligned with UK Government, MoD, and Lockheed Martin requirements. You will partner with program...Read More>>.

Posted: October 1st, 2026
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Vice President, Network and Security Engineer

Company IconMUFG
Location IconLondon

Overview In this role you will support MUFG's EMEA data network, including firewall and network infrastructure, ensuring reliable incidents resolution and documentation. You will collaborate with cross-functional teams to manage incidents,...Read More>>.

Posted: October 1st, 2026
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Senior Security Engineer, Detection and Response

Company IconRoblox
Location IconLondon

Overview As a founding member of Roblox’s EMEA Security Operations, you design and operationalize detections, automations, and tooling to protect players, developers, and the platform at global scale. You act as primary Incident Commander...Read More>>.

Posted: October 1st, 2026
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Senior Developer Experience Security Engineer

Company IconMotorway
Location IconLondon

Overview In this role you will embed security into how engineers build, deploy and operate software, making secure options the easiest path. You’ll bridge the Developer Experience and Security Operations teams to scale secure-by-default p...Read More>>.

Posted: October 1st, 2026
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Senior Physical Security Engineer / Consultant

Company IconArup
Location IconLondon

Overview As a Senior Security Consultant/System Engineer, you design and manage security projects for built environments, ensuring high-quality delivery and client satisfaction. You work across a multidisciplinary team to integrate security...Read More>>.

Posted: October 1st, 2026
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Security Engineer III - Java / AWS

Company IconJP Morgan Chase
Location IconGlasgow

Overview As a Security Engineer III within JPMorganChase's Global Technology team, you design and deliver scalable, trusted security solutions in a fast-paced, agile environment. You’ll work across teams to strengthen threat detection, im...Read More>>.

Posted: October 1st, 2026
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Security Engineer – Endpoint & Data Protection

Company IconNTT DATA
Location IconLondon

Overview In this role you will help secure client environments by implementing governance and protection for data and endpoints. You will work within our client delivery team to configure Microsoft Purview, AIP/MIP, DLP, and Insider Risk po...Read More>>.

Posted: October 1st, 2026
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Product Security Engineer (Founding team)

Company IconAglide
Location IconLondon

OverviewAglide\'s browser agent platform is trusted by household-name fintechs and global enterprises to automate and secure the applications their employees depend on most. We\'ve raised over $3.5M to go after this problem, and every...Read More>>.

Posted: June 6th, 2026
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F5 Infrastructure & Security Engineer (Hybrid)

Company IconHOK Consulting - Technical Recruitment Consultancy
Location IconGreater Manchester

A technical recruitment consultancy is seeking an F5 Infrastructure Engineer to join its security-focused DevOps team. This hybrid role involves implementing and automating F5 rules in cloud environments, enhancing web security, and collaborating wit...Read More>>.

Posted: June 6th, 2026
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Penetration Tester: Offensive Security Engineer

Company IconTesco
Location IconWelwyn Garden City

A leading retail company in the UK is seeking a Cyber Security Specialist to enhance its penetration testing capabilities. In this role, you will perform security assessments on applications and infrastructure, utilizing internal knowledge to address...Read More>>.

Posted: June 6th, 2026
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Senior Cloud Platform & Security Engineer

Company IconzeroRISC
Location IconLondon

A security-focused technology company in Greater London seeks a mid-level or senior Software Engineer to develop cloud services and infrastructure. This role offers the opportunity to directly contribute to scalable, reliable systems and requires 6+...Read More>>.

Posted: June 6th, 2026
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Operational Security Engineer – Institutional Trading

Company IconPrudence Holdings
Location IconLondon

Prudence Holdings is looking for a hands-on Security Engineer to focus on operational security for off-chain trading processes. This role involves collaborating with the Institutional Trading and Financial Operations teams to ensure secure operations...Read More>>.

Posted: June 6th, 2026
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Security Engineer III - Data Engineer

Company IconJPMorganChase
Location IconBournemouth

OverviewJoin to apply for the Security Engineer III - Data Engineer role at JPMorganChaseAs a Data Engineer at JPMorgan Chase within the Cybersecurity and Technology Controls, you''ll leverage your skills to develo...Read More>>.

Posted: June 6th, 2026
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Lead Security Engineer - Platform & DevSecOps

Company IconJPMorganChase
Location IconLondon

A global financial services firm is looking for a Lead Security Engineer to enhance the security of software delivery processes. This role involves collaborating with engineering teams to design and implement security controls within CI/CD pipelines,...Read More>>.

Posted: June 6th, 2026
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Lead ICT Infrastructure & Security Engineer

Company IconMOTT MACDONALD
Location IconCambridge

Mott MacDonald is seeking an ICT Principal Engineer to design Security Systems and ICT Infrastructure within the Digital Infrastructure team of the Buildings division. The role is ideally based in our South‑East UK offices (London, Croydon, Camb...Read More>>.

Posted: July 18th, 2026
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Offshore Wind SCADA Security Engineer

Company IconTaylor Hopkinson
Location IconGlasgow

Taylor Hopkinson is seeking a SCADA Engineer for a major Offshore Wind Farm Developer in Denmark to strengthen OT vulnerability management, patching, and configuration controls across multiple sites.You will review vulnerabilities, define b...Read More>>.

Posted: July 18th, 2026
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Defence-Grade Hardware Security Engineer

Company IconAwerian Ltd
Location IconCambridge

Awerian seeks a Hardware Security Engineer Consultant to assess critical systems for vulnerabilities and develop cyber-physical defence solutions. You will build proof-of-concept demonstrators and prototypes, often with third-party components, in...Read More>>.

Posted: July 20th, 2026
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Senior iOS Security Engineer – ProdSec

Company IconiProov
Location IconLondon

Senior iOS Security Engineer (ProdSec) at iProov Senior iOS Security Engineer About iProov iProov provides science-based biometric solutions that enable the world’s most security-conscious organizations to...Read More>>.

Posted: July 23rd, 2026
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Member of Technical Staff - Security Engineering

Company IconFractile
Location IconLondon

Member of Technical Staff - Security Engineering London or Bristol - Hybrid - Permanent About Fractile Fractile was founded in 2022 on the bet that, eventually, the world’s most capable AI syste...Read More>>.

Posted: July 24th, 2026
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AI Security Engineer, Senior Associate

Company IconAlvarez & Marsal
Location IconLondon

Description About Alvarez & Marsal Alvarez & Marsal (A&M) is a global consulting firm with entrepreneurial, action and results-oriented professionals. We take a hands-on approach to solving our clients' problems and assisting...Read More>>.

Posted: July 31st, 2026
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Senior GenAI Security Engineer (Embedded)

Company IconAMAZON UK
Location IconLondon

Amazon Web Services (AWS) is seeking a Senior GenAI Security Consultant embedded with Forward Deployed Engineers to build secure GenAI solutions with production-grade security. You’ll translate complex security requirements into code and archite...Read More>>.

Posted: August 4th, 2026
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Content Security Engineer — Media & Entertainment

Company IconRailway Corp
Location Icon

ISE is an independent consulting and software firm focused on securing high value assets for global enterprises. The team conducts vendor and platform assessments, advises on secure workflows and content protection, and maintains compliance docume...Read More>>.

Posted: August 8th, 2026
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AI-Powered Offensive Security Engineer

Company IconWatchTowr Pte. Ltd.
Location IconLondon

WatchTowr Pte. Ltd. is looking for a candidate who thrives at the intersection of offensive security, AI, and experimentation. In this role, you will build innovative tooling that enhances security workflows while integrating directly into the wat...Read More>>.

Posted: August 11th, 2026
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Data Security Engineer: Cloud & Automation

Company IconJust Eat Takeaway.com
Location IconLondon

Just Eat Takeaway.com is seeking a Data Security Specialist to engineer and safeguard data across cloud-native and enterprise environments. You will translate security standards into scalable implementations, from DLP to encryption pipelines, embe...Read More>>.

Posted: August 24th, 2026
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Field Security Engineer — Service & Maintenance

Company Icon4Way Recruitment
Location IconTwickenham

4Way Recruitment is seeking a permanent Security Engineer for a varied service and maintenance role in the UK. You will work directly with customers, carrying out inspections, maintenance and repairs on access control and CCTV systems.A ful...Read More>>.

Posted: August 26th, 2026
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Senior Cloud & AI Security Engineer

Company IconIntropic
Location IconLondon

Intropic is hiring a senior security leader responsible for the entire security stack across cloud, endpoints, and AI usage. You will prioritise work, implement detection and response, and drive secure engineering practices in a fast-paced FinTech...Read More>>.

Posted: September 2nd, 2026
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Fire & Security Engineer - £32K-£40K

Company IconSmile Digital
Location IconWorcester

Fire & Security Engineer, Worcestershire, Wset Midlands includes overtime and additional benefits We are working with an established and growing fire and security business that is looking to strengthen its engineering team across Worce...Read More>>.

Posted: September 29th, 2026
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Security Engineer | Hedge Fund (B237EF6)

Company IconReferment
Location IconLondon

Referment is partnering with a newly launched, technology-driven investment firm to hire a Security Engineer who will play a pivotal role in building the firm's security function from the ground up. This is a genuine greenfield opportunity...Read More>>.

Posted: September 30th, 2026
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Security Engineer: Greenfield Cloud & Detection

Company IconReferment
Location IconLondon

Referment is building a security function from the ground up, giving you ownership over architecture, tooling and processes from day one. You will work with a highly technical engineering team and senior leadership to establish a modern, engineeri...Read More>>.

Posted: September 30th, 2026
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Enterprise Security Engineer — Automation & Cloud

Company IconAj Bell
Location IconBroughton

AJ Bell is recruiting an Information Security Engineer to support the Chief Information Security Officer in managing and reducing information security risks across Technology Services. This is a hands-on, technical engineering role where you'll he...Read More>>.

Posted: September 30th, 2026
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Security Engineer: PenTesting & Cloud Defense

Company Iconabs | asia blockchain summit
Location IconCity of Westminster

abs | asia blockchain summit is seeking a Security Engineer to manage our security posture and keep our application safe from threats. The role covers penetration testing of web apps, cloud security, and SOC II compliance, with a hands-on approach...Read More>>.

Posted: September 30th, 2026
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AI Platform Application Security Engineer

Company IconWriter
Location IconLondon

Writer is seeking a Security Engineer to build the security foundations for AI-powered applications at scale in a hybrid London-based role. You will partner with engineering to embed security into every line of code and shape product decisions fro...Read More>>.

Posted: September 30th, 2026
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Hybrid Identity & Infrastructure Security Engineer

Company Iconfsp
Location IconNewbury

FSP seeks an Infrastructure Security Engineer to join its Cyber Engineering team in the UK, focusing on Microsoft-aligned security offerings with emphasis on Active Directory, Windows Server and hybrid identity.You will work with customers...Read More>>.

Posted: September 30th, 2026
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Security Engineer — Threat Detection & Automation

Company IconHunter Bond
Location IconLondon

Hunter Bond is seeking an experienced Security Engineer to join a proactive security team within a leading global financial services organisation in Greater London. The role focuses on developing, implementing, and enhancing security technologies...Read More>>.

Posted: October 1st, 2026
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Security Engineer: £80,000 (Investment Firm)

Company IconHunter Bond
Location IconLondon

An exciting opportunity has arisen for an experienced Security Engineer to join a highly skilled Proactive Security team within a leading global financial services organisation. This role will focus on the development, implementation, and enhancem...Read More>>.

Posted: October 1st, 2026
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Azure Security Engineer — Path to Architecture

Company IconBig Red Recruitment
Location IconLondon

Big Red Recruitment in the United Kingdom seeks a hands-on Cloud Security specialist to join a growing cybersecurity consultancy. You’ll work on Azure security, Entra ID, PIM and PAM, with mentoring from experienced architects and a route toward...Read More>>.

Posted: October 1st, 2026
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Security Engineer III - Java / AWS

Company IconJPMorganChase
Location IconGlasgow

Job Description Push the limits of what's possible with us as an experienced member of our Security Engineering team. Job Description Push the limits of what's possible with us as an experienced member of our Security Engi...Read More>>.

Posted: October 1st, 2026
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Hybrid Infrastructure Security Engineer (Azure)

Company Iconhireful
Location IconBirmingham

hireful is seeking an IT Infrastructure Engineer with strong cyber security skills to join a large global organisation. Based in Birmingham, this hybrid role combines on-premise and Azure environments to design, maintain and secure systems....Read More>>.

Posted: October 1st, 2026
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Elastic SIEM & Cloud Security Engineer

Company IconForsyth Barnes Consultancy
Location IconManchester

Forsyth Barnes Consultancy in Manchester is seeking a Cyber Security Engineer to design, operate and improve capabilities used to detect, investigate and contain cyber threats across a complex infrastructure.You will develop SIEM content, d...Read More>>.

Posted: October 1st, 2026
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Senior Python Platform Security Engineer

Company IconArm
Location IconCambridge

Arm is seeking a Senior Software Engineer for the Vulnerability Research and Tooling team in Cambridge to build Metis, a central security analysis platform. You will design and run Python backend services, APIs, and tooling within a small, agile t...Read More>>.

Posted: October 1st, 2026
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CyberArk PAM & Proactive Security Engineer

Company IconMizuho
Location Icon

Mizuho is seeking a Senior Proactive Security Engineer to support the Proactive Security function with a balanced focus on Privileged Access Management and broader security engineering.The role involves supporting CyberArk PAM, building pre...Read More>>.

Posted: October 1st, 2026
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Security Engineering Lead: Strategy & Delivery

Company IconLa Fosse
Location IconLondon

A leading household-name organisation is undergoing a major transformation and is looking for a Security Engineering Manager to join their Cyber Defence & Engineering team.This is a leadership-focused role responsible for overseeing...Read More>>.

Posted: October 1st, 2026
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