python software engineer cyber security jobs in London

A leading digital products company in the UK is looking for Senior and Principal Engineers to design secure, scalable software in agile teams. Applicants must hold active or recently active SC or DV clearance and possess strong experience in delivering production systems. Proficiency in modern programming languages such as Java, Python, or Go, alongside...

Elsevier is seeking a Senior Software Engineer I (Java & Python) to join the Submission and Editorial platform. You will build Document Intelligence capabilities to transform unstructured manuscripts into structured data, enabling AI-driven features and smarter editorial experiences at scale.You'll work with AWS, microservices, and event-driven...

Deerfoot IT Resources Limited in London is looking for a hands-on Cyber Security Tooling Engineer to own deployment through day-to-day operation and eventual replacement with a better solution. The role is a hands-on mix of platform operations and engineering projects within a leading financial services security team.The position is hybrid with four days...

Senior Software Engineer, Agent Endpoint DLP -office based 4 days per week in Moorgate, LondonJoin Fortinet, a global cybersecurity pioneer with over two decades of excellence, as we continue to shape the future of cybersecurity and redefine the intersection of networking and security. At Fortinet, our mission is to safeguard people, devices, and data...

About CLS: CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars’ worth of currency flows through our systems each day. Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk...

About CLS: CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars’ worth of currency flows through our systems each day. Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk...

Software Development Engineer, AWS Security Epoxy Job ID: 10582071 | Amazon Development Centre (London) Limited Amazon Security operates at a scale few engineers ever get to work at. Epoxy is the team that builds the automation making that coverage possible. We are looking for a Software Development Engineer to support the building and operating of the...

Rightmove is recruiting an Application Security Engineer to join our growing AppSec function. You’ll work with engineering teams to deliver day-to-day AppSec capabilities, including tooling, vulnerability management, secure design and threat modelling, while shaping how AppSec operates as the function matures.You will engage with security reviews, triage...

A leading global financial services organisation is seeking a Cyber Security Associate to join its growing Proactive Security function. The successful candidate will support both Privileged Access Management (PAM) and broader security engineering initiatives, helping to strengthen preventative controls, improve cyber resilience, and reduce security risk...

British Airways is seeking a Junior Cyber Security Engineer to support and improve security capabilities that protect BA and customers worldwide. You will learn from experienced engineers, implement security controls, and contribute to project work across BA's security engineering function.This hands-on role develops skills in Microsoft security tools, cloud...

Susquehanna is seeking a graduate software engineer in London to join our trading technology teams. You will work across C#, C++, and Python, contributing to high-performance systems and data-driven solutions while learning from senior technologists.Graduating in 2027 from Computer Science, Engineering, Mathematics, Physics, or related STEM fields, you will...

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within the AI/ML Data Platforms business, youare an integral part of a team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable...

AI Security Institute in London is seeking software engineers to join our Core Technology Team. You will work on research-oriented software and infrastructure, from sandbox plugins to model hosting and evaluation tooling, in small teams.You will work with world-class researchers, receive mentorship from technical leads, and have opportunities to publish....

A cybersecurity firm is seeking a Senior Software Developer to tackle complex security challenges. Collaborating with researchers, you will deliver robust software solutions while reverse-engineering system internals across various platforms like Windows, Linux, Android, and iOS. The ideal candidate is experienced in Python, C, and Rust, with a background in...

Elsevier is seeking a security-minded Software Engineer to design, build, and operate production-ready software and cloud infrastructure in AWS. You will implement monitoring, CI/CD, and scalable services while mentoring teammates within a cross-functional Agile team.Responsibilities include maintaining a robust engineering pipeline, enhancing security...

MASUK Software Engineer - Securities Lending Platform MASUK Software Engineer - Securities Lending PlatformLocation: LondonExperience: Junior/Mid Role We're looking for a software engineer to build a new real-time event-driven platform for securities lending, repo and derivatives trading. The platform has two core objectives: Workflow automation - Streamline...

About the RolePerplexity is seeking a hands-on Software Engineer to build and evolve the software, automations, and systems that power our security operations. This role focuses on engineering security tools and internal AI-driven agents that improve detection and response, vulnerability management, and the overall security posture of our products and...

Cyber Security Researcher Location: London, Greater London, GB, EC2V 8 Start Date: September 17, 2026 Application Deadline: December 16, 2026 hackajob is partnering directly with CoreTech Security to hire for this role. CoreTech is looking for candidates with a STEM background, which may also include experience of research, cyber security or ethical...

JPMorgan Chase & Co. in London seeks a Sr Lead Software Engineer to design, build, and optimize distributed computing solutions in HPC, K8s, and cloud environments.You will lead efforts across Python, C++, and Go, leveraging GenAI to improve monitoring, management, and efficiency of large compute platforms. You will collaborate with cross-functional teams,...

Fortinet, Inc. in London (Moorgate) is seeking a Software Security Engineer to strengthen the FortiDLP product with a security-first mindset.You will contribute across the stack, promoting secure coding practices and delivering robust software in a fast-growing cybersecurity company. The role emphasizes threat modelling, code reviews, and integrating...