1 to 25 of 41 Offensive Security Jobs in the UK

Principal Vulnerability Engineer (0-Day Research & Offensive Security Tooling) (Remote) About the Rol eWe are looking for an exceptional Principal Vulnerability Engineer to join our Offensive Security Research team. This is a unique opportunity for a highly technical security professional who combines elite vulnerability research … vulnerability research while building scalable, AI-powered tooling that automates vulnerability discovery, exploit validation, patch analysis, and detection engineering. Working at the intersection of offensive security, reverse engineering, software engineering, and applied AI, you will help organizations identify and eliminate critical vulnerabilities before they can be weaponized ...

Engineering Manager/Technical Lead – Offensive Security Infrastructure (Remote) About the Rol eWe are seeking an exceptional Engineering Manager/Technical Lead to lead the development of our next-generation Offensive Security platform. This is a rare opportunity for a highly technical leader who thrives … engineering excellence with technical leadership, mentoring, and strategic direction .You will lead distributed engineering teams across multiple regions while architecting and scaling internet-wide offensive security infrastructure capable of processing massive datasets, identifying vulnerabilities at scale, and delivering actionable intelligence that helps organizations proactively reduce risk . This ...

LEAD CYBER SECURITY ENGINEER £110,000 + Bonus + Excellent Benefits including Private Health (& Dental )& Share Scheme Full Time Remote Working SECURE has Strategically Partnered with a Multi-Award-Winning, Software-Based Organisation at the forefront of Offensive Security & Pre-Emptive Exposure Management. As a market leader … backed by significant Venture Funding, they are expanding their Offensive Security capabilities, specifically by scaling a high-performance Cyber Engineering Function across the globe. Role Overview: Step in as the highly technical CyberEngineering Leader of their Offensive Capabilities. Acting as a True "Player-Coach," you will Mentor ...

Offensive Security Researcher/Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator , backed by funding, recognised by Gartner, and trusted by some … world’s biggest enterprises and critical infrastructure providers. They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: Spending your days doing what ...

Offensive Security Researcher/Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator , backed by funding, recognised by Gartner, and trusted by some … world’s biggest enterprises and critical infrastructure providers. They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: Spending your days doing what ...

Offensive Security (Mobile) | £65-75k DOE | Hybrid Working (UK) We're working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they're looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security. The Opportunity: You'll take ownership of sophisticated red team and mobile security assessments across iOS and Android environments, simulating real-world attack scenarios to identify vulnerabilities before they can be exploited. The role combines hands-on offensive ...

Software-Based Organisation at the forefront of Pre-Emptive Exposure Management. As a market leader backed by significant venture funding, they are expanding their Offensive Security capabilities, specifically by scaling an Elite Vulnerability Research & Engineering Function across the globe. Role Overview: Step in as the highly technical LeadVulnerability … hunting down Critical, High-Impact Weaknesses, you ensure their Clients Neutralise Vulnerabilities before Adversaries even strike. Who Should Apply: The Hybrid Researcher: An Elite Offensive Specialist who refuses to be boxed into a Single Domain. You can Audit Complex Web Applications for Authentication Bypasses in the morning, Reverse-Engineer ...

Head of Pre-Sales Technical Account Management | Offensive Security | Up to £130k Our client is a Gartner-recognised offensive security platform - built by operators, researchers, and engineers who think like attackers. They're hiring their first Head of Pre-Sales/Technical Account Management … full pre-sale journey and build the function from scratch, as well as own some post-sales enagements. What makes this different: → Offensive security at the core - not a generic SaaS pre-sales seat → True greenfield build with executive visibility → Work at the intersection of red teaming, product ...

seeking an experienced Security Architect - focusing on Advanced Threat Response (ATR) solution to be a part of the Architecture team, you will design and maintain end-to-end architecture for advanced threat detection and response across cloud, network, and endpoint environments. You will work cross-functionally to deliver scalable … secure, and cost-effective security architecture solutions within a complex enterprise environment. What you'll do: Define requirements, evaluation criteria, and success metrics for automated offensive security testing platforms and red/purple team tooling Lead vendor evaluations, proof of concepts (PoCs), and comparative product assessments Architect ...

continues to expand its broader cybersecurity engineering capability across multiple international locations. This role is intentionally broad in scope, designed for strong software-oriented security engineers who may sit across offensive security, defensive engineering, infrastructure security, detection, tooling, or platform protection rather than one narrowly defined … domain. The environment is highly engineering-led, with a strong preference for technically exceptional generalists who enjoy building, automating, and solving security problems through software and systems thinking. Successful candidates will typically come from a computer science or software engineering background before moving deeper into cybersecurity-focused engineering work. ...

Offensive Security (Mobile) £65-75k DOE Hybrid Working (UK) We're working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they're looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security click apply for full job details ...

SENIOR APPLICATION SECURITY ENGINEER AGENTIC AI SECURITY PLATFORM £800 - 900 per Day (Dependent on Experience) Our Client is a major Financial Services Organisation undertaking a major Security Architecture Programme. They are now entering the Production Build Phase of an Agentic Application Security Agent that will fundamentally … change how their Application Security is Delivered within the SDLC. Early Phases of the Programme have already defined the Target Architecture, Threat Model & Prompt Engineering Strategy . The Next Stage is to Transform this Foundation into a Production - Grade Capability Used Daily by Engineering Teams , enabling Developers to: Triage ...

Penetration Tester | London (Onsite)| A leading quantitative investment management firm is looking to hire a Penetration Tester to join its established Security Assurance function. The business operates at the intersection of technology and financial markets, running complex, high-performance infrastructure at scale, and takes a rigorous, engineering-led approach … security. This is a senior individual contributor role sitting within a team responsible for identifying and validating security risks across a broad technology estate — spanning trading infrastructure, cloud platforms, APIs, and business applications. The hire will own internal penetration testing end-to-end and play a meaningful role ...

Team Lead | Remote (UK Only) This is a senior technical position for someone who thrives at the intersection of offensive security, threat research, and client advisory. You'll work closely with senior leadership to shape engagements, influence testing methodology, and deliver realistic, intelligence-driven adversary emulation across complex … planning through to execution and reporting. You'll help define attack hypotheses, model realistic threat actor behaviour, and challenge client assumptions through carefully crafted offensive operations. You'll be trusted to operate autonomously while collaborating closely with senior technical stakeholders, helping to maintain exceptionally high delivery standards across ...

site work Type: Permanent, Full-Time Summary: We are looking for experienced Penetration Testers to join one of the UK's larger dedicated offensive security practices. With a team of around 70 testers split across CHECK and CREST work, this is a well-established consultancy delivering high-quality … genuine variety in engagement type, sector, and technical depth. The team is structured across two streams, more commercially-driven engagements through CREST, and deeper, security-led work through CHECK, so there's a clear path whichever direction you want to lean. Multiple roles are available across mid and senior ...

Cyber Security Specialist - Worcester, UK Salary up to £80,000 Depending on Experience Full time onsite role, in a cutting-edge environment Active eDV clearance required ABOUT THE CLIENT: Our client is a highly respected organisation operating at the forefront of advanced technology and cyber capability. They deliver impactful … environments, working on projects that directly contribute to critical national objectives. Due to continued growth and programme demand, they are looking to appoint Cyber Security Specialists to join their expert team. THE BENEFITS: Generous holiday allowance with buy and sell options Private medical and healthcare options Pension scheme with ...

Team Engineer | Adversary Simulation Ready to make the move into red teaming properly? You've been building your offensive security skills - maybe in penetration testing, maybe through personal research and labs - and you're ready for a role that lets you focus entirely on adversary simulation. This … real attacker story Learning how engagements are scoped, structured, and presented to clients What We're Looking For: A background in penetration testing or offensive security, with a growing interest in red teaming specifically Solid foundations in Active Directory and at least one cloud environment (Azure preferred) Someone ...

Cyber Security Specialist (Red Team) - Worcester, UK Salary up to £80,000 Depending on Experience Full time onsite role, in a cutting-edge environment Active eDV clearance required ABOUT THE CLIENT: Our client is a highly respected organisation operating at the forefront of advanced technology and cyber capability. They … environments, working on projects that directly contribute to critical national objectives. Due to continued growth and programme demand, they are looking to appoint Cyber Security Specialists to join their expert team. THE BENEFITS: Generous holiday allowance with buy and sell options Private medical and healthcare options Pension scheme with ...

CREST Certified Penetration Tester (CRT) | £50-60k | Remote We're partnered with a well-established cyber security organisation that's continuing to invest heavily into its offensive security capability following sustained client growth across both commercial and regulated environments. As part of that growth, they … looking to hire a CREST-certified Penetration Tester to join a collaborative testing team delivering security assessments across a broad range of technologies and customer environments. This role would suit someone with around 2-3 years of hands-on penetration testing experience who is looking to continue developing within ...

Package: £26,000 to £28,000 basic + uncapped commission (Year 1 OTE: £40,000) Company overview: Our client is a boutique cyber security recruitment business focused on cloud security, offensive security and infrastructure security hiring. They partner with consultancies, enterprise firms and SaaS businesses … cloud markets • High-demand market with strong hiring activity • Year 1 OTE £40k, Year 2 £50k, Year 3 £65k • Exposure to CISOs and security leadership teams • Opportunity to specialise in a technical niche market The role: • Recruiting Security Engineers, Analysts and Consultants • Headhunting talent across cyber markets • Managing ...

Senior Penetration Tester What You’ll Do You’ll be on the front lines of our security efforts, thinking like an attacker to help us stay one step ahead. As a Senior Offensive Security Engineer, you’ll break things (responsibly), uncover weaknesses, and help us build stronger … hands-on role where you’ll move fast, experiment, and have real impact. You’ll work closely with engineers, product teams, and security to turn findings into fixes — not just reports. Day to day, you’ll: Hack our own systems to find and fix vulnerabilities before others ...

recruiting for Cyber Security Lead for A leading manufacturing business to take ownership of its security and compliance agenda. This is a high impact, hand on role where you will shape and mature the organisation's cyber security posture, with a clear road map to achieve: Cyber … Essentials - Cyber Essentials Plus - ISO 27001 You'll be the go-to expert for security, working across infrastructure, operations, and leadership to embed best practice in a live 24/7 production environment. The Role You will take ownership of cyber security across the organisation, combining hands ...

Type: Permanent, Full-Time Summary: We are looking for a skilled and motivated Penetration Tester to join a growing security team in Leeds. The main purpose of this role is to deliver high-quality offensive security assessments across web applications, APIs, and infrastructure, helping clients understand … both technical and non-technical audiences. Strong written reporting skills, with the ability to produce clear, well-structured deliverables. A genuine passion for offensive security, demonstrated through CTFs, labs (e.g. Hack The Box, TryHackMe), research, or community involvement. Benefits: Salary: £40,000 - £45,000 DOE Hybrid Working Company ...

Platform-Based Organisation at the forefront of Pre-Emptive Exposure Management. As a market leader backed by significant venture funding, they are expanding their Offensive Security capabilities, specifically by scaling an Elite Vulnerability Research & Engineering Function across the globe. Role Overview: Step in as a Hybrid Threat Hunter … aren't afraid of dropping into a Debugger. Software Engineering: Proven prior experience Writing & Maintaining Code, with a heavy emphasis on Python. Offensive Tooling: Hands-On exposure to the Core Ecosystem: Burp Suite, Ghidra/IDA, Debuggers & Fuzzers AI/LLM Experimentation: Genuine interest and practical experimentation using LLMs ...

c. £350k Comp Package | Hybrid Working - 4 Days in Office] Role Overview We’re representing a high-calibre quantitative investment firm building a new security function alongside a completely refreshed technology environment. This is a rare opportunity to shape Detection & Response properly from day one, rather than inherit … noisy SIEM, half-owned tooling and legacy processes. The role suits a deeply technical security engineer who understands systems at a low level, has strong opinions on telemetry and detection architecture, and can turn those opinions into production-grade capability. You’ll work closely with senior security leadership ...