4 of 4 Offensive Security Jobs in the City of London

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. ...

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 ...

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 ...

Cyber Business Development Manager A growing Cyber Security Consultancy requires a Cyber Business Development Manager to win new customers across sectors such as financial services, defence, and government. You’ll take ownership of building pipeline and closing deals, directly contributing to revenue growth and market expansion. Base Salary … promoting unique offerings. Develop senior-level relationships with key stakeholders, including CISOs, and work alongside technical specialists to design tailored solutions. Contribute proven Cyber Security sales experience, including success in generating your own opportunities and winning new clients, supported by a solid understanding of offensive security services. ...