Senior Security Engineer

Abound is changing how consumer lending works in the UK and beyond. By combining advanced AI with Open Banking data, the company looks at a person’s complete financial situation, not just a credit score, to make lending decisions that are fairer and more accurate. Since launch, Abound has issued over £1.3bn in loans, with a credit performance that outpaces industry averages. The company became profitable within 2.5 years and has backing from major investors, including Citi and Deutsche Bank. With over £2bn in funding, Abound is recognized as one of Europe’s fastest-growing fintechs. Role overview This Senior Security Engineer position is based in London and sits within the Platform team. The role blends DevSecOps responsibilities, serving as a bridge between product engineering and Corporate IT. As a hands-on contributor, the Senior Security Engineer critically reviews security architecture across both production and internal IT environments. During the first 6 to 12 months, the focus will be on designing and implementing next-generation cloud security architecture in AWS and GCP. The role also involves building and maturing internal SOC capabilities, particularly around detection and response. What you will do Manage Microsoft Sentinel to strengthen SIEM/SOAR capabilities Automate RBAC for identity and access management across AWS, Microsoft Entra, and internal systems Embed security controls into GitLab CI/CD pipelines, including scanning, infrastructure-as-code reviews, and automated policy enforcement Support a shift-left approach by integrating security throughout the software development lifecycle Technology stack Cloud & Compute: AWS, ECS Fargate, Aurora, Lambda, GCP Data Lake: S3, DMS, Glue Security & Identity: Microsoft Defender (XDR), Microsoft Sentinel (SIEM/SOAR), Defender for Cloud (CSPM), Microsoft 365, Entra, Intune Cloud Security Tooling: GuardDuty, Security Hub, Inspector, Security Command Center Code & Infrastructure: Terraform, GitLab CI/CD

Why Join Deliveroo?At Deliveroo, our mission is to revolutionize how people shop and dine by seamlessly connecting consumers, restaurants, shops, and delivery riders. We strive to make food and product accessibility more convenient and enjoyable, empowering individuals to purchase what they want, when and where they desire.As a forward-thinking, technology-driven organization, we are leading the charge in one of the fastest-growing industries globally. Our small team is making a significant impact as we tackle some of the most fascinating challenges. We prioritize speed, autonomy, and innovative ideas, continuously seeking fresh perspectives.About the RoleIn the role of Senior Security Engineer, you will spearhead the development and implementation of security measures that safeguard our internal networks, workforce identities, endpoints, and corporate systems. Collaborating with security teams across the US, EU, and APAC, you will aim to minimize risk and enhance our security controls.Operating with significant independence, you will define the technical strategy, make architectural decisions, and oversee the execution of complex security projects from start to finish. Your focus will be on balancing risk mitigation with user experience, ensuring that security measures are effective without hindering employee productivity.This position emphasizes Identity and Access Management (IAM), Endpoint Security (EDR), Network Security, logging and detection engineering, and secure SaaS enablement. You will collaborate closely with IT, Legal, Privacy, Engineering, and business stakeholders to ensure that security is integrated as a fundamental practice across the organization.Our security protocols are aligned with recognized frameworks such as the CIS Critical Security Controls and the NIST Cybersecurity Framework (CSF).

Join Checkatrade as a Senior Security Engineer and play a pivotal role in safeguarding our systems and data. In this position, you will be responsible for designing and implementing robust security measures, monitoring potential threats, and ensuring compliance with industry standards. We seek a proactive individual who thrives in a fast-paced environment and is dedicated to continuous improvement.

Application Deadline: We are actively conducting interviews and aim to fill this position promptly as soon as we find the right candidate.THE OPPORTUNITYApollo Research is searching for a Senior Security Engineer to take full ownership of security protocols and practices within our organization. As the first dedicated security hire, you will play a crucial role in maintaining the trust of our innovative AI lab partners and supporting our research mission. This position is embedded within the engineering team and reports directly to the CEO.YOUR RESPONSIBILITIES WILL INCLUDE- Establishing and leading Apollo's security program. You will create and manage the security roadmap, perform risk assessments, and adapt the program as the organization evolves, defining the security posture in relation to our size, threat model, and partner relationships.- Fostering trust with our AI lab partners. You will be the primary contact for security teams of our partners, building relationships with their CISOs, and ensuring our security practices are documented and meet the necessary standards for our partnerships.- Setting security strategies for engineering. You will define security principles and an AppSec strategy that the engineering team will adopt, creating efficient pathways for secure development.- Defining the use of AI tools and integrations at Apollo. You will determine approved tools, data handling procedures, and vetting processes for new technologies, ensuring a balance between security and the need for cutting-edge research tools.- Managing our security tooling stack and automating operations. You will select, implement, and oversee security controls such as EDR/MDR, endpoint management, email protection, and identity management, while automating processes wherever feasible.- Leading compliance and certification efforts. You will spearhead certification initiatives (ISO 27001, SOC 2) as required, integrating compliance into our security practices.- Managing IT administration across the organization. You will oversee Google Workspace and other IT resources.

At Menlo Security, we are dedicated to empowering secure connections, communications, and collaborations worldwide. Our mission has become increasingly vital in the current landscape shaped by COVID-19. We proudly serve a diverse clientele, including Fortune 500 companies, 9 out of the 10 largest global banks, and the Department of Defense.As we transition from a team of 400 towards our next growth phase, we seek passionate individuals who exhibit empathy and adaptability. The ideal candidate will possess a strong ethical foundation, exceptional organizational skills, and a commitment to service. A willingness to both give and receive constructive feedback is essential.Backed by industry-leading investors such as Vista Equity Partners, General Catalyst, JPMC, American Express, HSBC, and Ericsson Ventures, Menlo is poised for significant growth.Position Overview:The Senior Security Engineer will play a crucial role in safeguarding our organization’s digital assets, infrastructure, and data. Responsibilities include designing, implementing, and maintaining security systems and controls, managing security tools, conducting risk assessments, responding to incidents, and ensuring compliance with relevant security standards. This position involves close collaboration with various teams within Menlo to promote security best practices across all technological initiatives, thereby enhancing our security posture and resilience.Key Responsibilities:Security Operations & Monitoring:Oversee the SIEM platform and manage security alerts to identify, investigate, and respond to potential threats.Administer and optimize EDR solutions, specifically Crowdstrike, to ensure comprehensive endpoint protection.Lead incident response efforts, including investigation, containment, remediation, and post-incident analysis.Vulnerability & Risk Management:Oversee the vulnerability management program, including scanning, prioritization, and coordination of remediation efforts.Conduct risk assessments and formulate strategies for risk mitigation.

About Anaplan Anaplan builds an AI-powered scenario planning and analytics platform that helps organizations make sharper business decisions. Over 2,400 global companies, including names like Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer, rely on Anaplan to stay competitive and navigate changing markets. The team values diverse perspectives, sets ambitious goals, and celebrates progress of all sizes. Anaplan’s culture emphasizes customer success, leadership at every level, and disciplined execution. Employees find opportunities for growth, connection, and recognition. Role Overview: Senior Product Security Engineer Location: London, United Kingdom This role focuses on strengthening security across Anaplan’s products and operations. The Senior Product Security Engineer leads initiatives to reduce risk, partners with teams across the company, and helps shape the security strategy. Main Responsibilities Design, lead, and implement security programs that address key risks and deliver on security goals. Translate findings from security assessments into practical projects that improve security at scale. Work with both technical and non-technical teams to embed security controls and encourage secure practices throughout the company. Define and track metrics to show the impact and effectiveness of security programs. Manage stakeholder expectations, using problem-solving and negotiation skills to build trust across teams. Support innovation and proof-of-concept work within the security function, helping teams focus on the right priorities. Collaborate with cross-functional groups to advance security objectives. Partner with the CISO to prepare executive reports, status updates, and company-wide communications, ensuring visibility into important security milestones and risks.

At Kroo Bank, we are pioneering the future of banking through innovative technology and exceptional digital services. As the fintech sector rapidly evolves, our bank is committed to adapting our roles and responsibilities to seize new business opportunities and meet emerging challenges. We prioritize updating our job descriptions to maintain our leadership in banking innovation.Your Contributions and Key Responsibilities:In the role of Senior Security Engineer, you will play a crucial role in the design and implementation of security measures for our mobile applications, services, and websites, ensuring adherence to the highest security standards. Your expertise will be pivotal in continually assessing and enhancing our security systems, ensuring our products and services are secure by design and compliant with both internal and external regulatory requirements. Key responsibilities include:Security Analysis and Improvement: Continuously evaluate our security systems for potential enhancements, ensuring our defenses lead in cybersecurity practices.Vulnerability Management: Proactively identify, assess, and resolve security vulnerabilities to uphold the integrity and confidentiality of customer data.Security Automation: Streamline security processes and procedures to boost efficiency and effectiveness, minimizing the risk of human error.Security Requirements and Solutions: Define and document system security requirements, offering well-considered recommendations to management.Development of Security Standards: Create and maintain best practices and security standards within the organization, guiding teams in secure coding practices.Secure Design: Collaborate with development teams to ensure robust security measures are integrated into the design of web and mobile front-ends, along with microservice architectures.Cloud Security and Secure Infrastructure: Assist teams in identifying and addressing gaps in infrastructure security, aligning with industry security posture standards.Cybersecurity Collaboration: Work closely with stakeholders across the organization to ensure security measures align with our overarching cybersecurity strategy and protect the bank’s technology infrastructure.Regulatory Compliance: Support teams in meeting compliance requirements for internal audits and external regulators to mitigate potential fines and reputational damage.

Join Samsara as a Senior Security Engineer on our Vulnerability Team, where you'll play a pivotal role in enhancing our security posture. In this position, you will be responsible for identifying vulnerabilities within our systems and implementing effective solutions to mitigate risks. Collaborate with cross-functional teams to ensure the security of our products and infrastructure, and contribute to our mission of bringing transparency and safety to the IoT space.

About Anaplan Anaplan builds an AI-powered scenario planning and analysis platform that helps businesses make confident decisions and stay ahead in the market. Our customers include Fortune 50 leaders such as Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer. We value innovation, customer success, and collaboration. Our teams work globally, celebrating diversity and leadership at every level. At Anaplan, people set ambitious goals and take pride in both individual and shared achievements. Role Overview: Senior Product Security Engineer Location: London, United Kingdom The Senior Product Security Engineer will help shape and strengthen Anaplan’s security programs. This role focuses on designing, implementing, and measuring security initiatives that protect our platform and support our business goals. What You Will Do Design and implement security programs to reduce risk and meet key security objectives. Turn findings from security assessments into actionable initiatives and scalable programs. Work with both technical and non-technical teams to integrate security controls and encourage secure practices throughout the company. Set and track metrics to measure the effectiveness and impact of security efforts. Manage expectations and build trust with stakeholders at all levels, using strong problem-solving and negotiation skills. Improve the security innovation and proof-of-concept process, helping teams focus on the most important challenges. Coordinate with cross-functional teams to advance security goals. Collaborate with the CISO to prepare executive reports, provide status updates, and highlight progress on critical security milestones and risks.

Role overview Nexthink is hiring a Senior Corporate Security Engineer in London. This position focuses on protecting information systems and sensitive data by designing, implementing, and managing security controls throughout the corporate environment. What you will do Lead the creation and rollout of security measures for corporate systems Oversee the ongoing management of security protocols to keep data safe Work with teams across the company to identify and assess security risks Support compliance with relevant industry standards Collaboration This role works closely with cross-functional groups, making sure security stays a shared priority and that risk assessments are both thorough and actionable.

AJ Bell seeks a Senior Information Security Engineer to strengthen the protection of company information systems and support compliance initiatives. The position is offered as a hybrid role, with the option to work from either the Manchester or London office and some flexibility for remote work. Key responsibilities Identify and assess security vulnerabilities within company systems Implement and maintain security controls to protect data and infrastructure Collaborate with teams across the business to promote effective security practices Assist in maintaining compliance with relevant regulations and internal policies Location This role is based in Manchester or London with a hybrid work arrangement, allowing for both office presence and remote work.

Causaly develops an AI-powered platform designed to help researchers and decision-makers in biomedicine quickly find and interpret evidence from scientific publications, clinical trials, regulatory documents, and complex data sources. The company’s mission centers on building a high-precision Knowledge Graph and applying generative AI to advance biomedical knowledge. Leading biopharmaceutical organizations use Causaly’s technology to accelerate drug discovery, improve safety, and support informed decisions. With backing from investors such as ICONIQ, Index Ventures, Pentech, and Marathon, Causaly continues to expand its product offerings and market reach. Role overview The Senior Security Engineer position at Causaly is based in London and offers the chance to shape the company’s security strategy and processes. This role provides significant autonomy and involves working closely with the security team, as well as collaborating across engineering and product groups. The Security Engineer will take ownership of vulnerability management, advise teams on security matters, and support SecOps activities. Expect to define strategies, build and refine processes, and serve as a trusted advisor throughout the engineering organization. Key responsibilities Lead the vulnerability management program: set strategy, select tools, prioritize work, and track remediation for dependencies, containers, and cloud infrastructure. Develop and maintain a dependency security strategy, including policies for third-party library use and update schedules. Integrate and manage security tools within CI/CD pipelines, such as SAST, SCA, secrets detection, and container scanning. Act as a security consultant for product and engineering teams, supporting design reviews, architecture decisions, and secure coding practices. Define and maintain security standards and guidelines that are practical for development teams. Oversee and improve the Security Champions program to build security awareness and skills across engineering teams. Support SecOps with incident triage and response, providing security engineering expertise when needed.

* Fully remote from the UK * Innovative Ideas. Real People. At Orca Security, we believe that in the right environment and with the right team, talent knows no boundaries. Our collaborative spirit, combined with our ambition to continuously push limits, has swiftly propelled us to unicorn status, establishing us as a global frontrunner in cloud security innovation. If you're eager to join an extraordinary team that motivates one another daily, now is the perfect moment to find your place within our group. We are on the lookout for passionate and talented individuals like you to become a part of our R&D organization and contribute to our mission of reshaping the future of cloud security. Are you ready to take the plunge and swim with our pod? Position Highlights Rapid Growth: Over the last seven years, we have accomplished milestones that typically take other companies a decade or more. During this time, we’ve significantly expanded our workforce, broadened our customer base, and quickly enhanced our product capabilities. Disruptive Innovation: Our founders recognized that traditional security solutions were inadequate for the cloud, prompting them to forge a new path. We are relentless pioneers who have developed agentless technology and continue to lead as the most comprehensive and innovative cloud security company. Robust Financial Backing: With a valuation of $1.8 billion, Orca is a cybersecurity unicorn that dominates the cloud security sector. We are supported by a remarkable group of investors, including Capital G, ICONIQ, GGV, and SVCI—a collective of CISOs who invest their own funds following thorough due diligence. Respectful and Transparent Culture: Our executives take pride in their accessibility and believe in sharing knowledge with all employees. Every team member plays a crucial role in shaping the future of our industry. About the Role As a Senior Software Engineer on the DSEC (Data & AI Security) team at Orca Security, you will be part of a vital group dedicated to safeguarding customer data and AI assets at scale. The team is responsible for scanning and analyzing a wide array of data stores and AI services—from managed databases and container images to object storage buckets and virtual machines (VMs)—to uncover sensitive data, keys, personally identifiable information (PII), and misconfigurations. You will also have the opportunity to map, model, and assess cloud AI services, providing customers with clear visibility and security insights across their data and AI landscape. This role is ideal for those who are excited about building the infrastructure that supports our Data Security Posture Management (DSPM) and AI security capabilities. You will be instrumental in helping shape the future of cloud security.

Why Join Faculty?Founded in 2014, Faculty is at the forefront of harnessing AI as a transformative technology for organizations globally. With a client base of over 350, we've dedicated ourselves to delivering human-centric AI solutions that drive significant performance improvements. Discover our real-world impact here.We prioritize innovation over trends, focusing on the responsible development and deployment of AI technologies that truly make a difference. Our expertise spans across various sectors including government, finance, retail, energy, life sciences, and defense, enabling us to deliver unparalleled service and results.As we continue to grow, we are eager to find individuals who share our passion for technology and a commitment to building a meaningful legacy through AI.Join us to explore the potential of AI in defining the future.About Our TeamOur Government and Public Services unit is dedicated to leveraging AI to enhance citizen services and promote the public good. From informing strategic decisions in government to optimizing the NHS and safeguarding children from harmful online content, our work demonstrates the transformative power of AI across all levels of government. Due to the sensitive nature of our projects, candidates may be required to obtain UK Security Clearance (SC) and may need to work on-site with government clients periodically.Your RoleAs a Senior Cyber Security Engineer, you will spearhead our security initiatives across critical projects, ensuring the intersection of robust engineering and AI safety. Your role will be vital in protecting essential infrastructure and conducting advanced

Join PPRO, where our mission is to streamline access to local payment methods and our vision is to empower global commerce by enabling sales to anyone, anywhere, using their preferred payment method. We collaborate with industry leaders such as Ant Group, PayPal, and Stripe, helping them tap into new markets, engage a broader customer base, and drive growth.Our strength is rooted in our diverse team, comprising over 50 nationalities across more than 10 international locations, all working towards a shared goal: delivering exceptional products and services to our partners and customers. While we strive to innovate in global commerce, we also embrace internal values such as #chooseaction, #beopen, #thinkcustomer, #gofurther, and #wintogether.Role Overview:We are looking for a highly skilled and driven Senior Security Operations Engineer to join our vibrant security team. This pivotal role is essential to safeguarding PPRO against an ever-changing threat landscape. You will be responsible for identifying, analyzing, and responding to security incidents, focusing primarily on enhancing our detection capabilities through the creation of SIEM rules. You should be proactive, hands-on, and self-motivated, with a solid background in operational security and a passion for addressing complex challenges with state-of-the-art technologies. This position offers a unique opportunity to engage in various aspects of security operations within a dynamic, cloud-native environment.

Join Deliveroo as a Senior Engineering Manager in our Proactive Security team. In this pivotal role, you will lead a talented team of engineers dedicated to enhancing our security posture and proactively addressing cyber threats. You will spearhead innovative projects, providing both technical leadership and strategic direction to ensure the safety and integrity of our systems.

Join Us in Empowering the UK's Small Businesses At Funding Circle, we believe that small businesses are the backbone of the economy, and our mission is to provide them with the support they need to thrive. Our innovative platform leverages advanced data analytics to facilitate rapid access to funding, ensuring that our clients can secure the resources they need in mere minutes.Combining the agility of a fintech startup with the reliability of a publicly traded company, we offer Circlers the independence to take initiative while making a significant impact on the industry.We take pride in our high-performance culture, where collaboration and support are at the forefront. We uplift one another, challenge the status quo, and succeed together because we understand that unity accelerates progress and innovation.Your Contribution Matters: Last year alone, our platform enabled businesses to generate £7.2 billion for the UK economy Join us in making a difference![Explore Our Impact Report] | [Check Our Trustpilot]Your Role Location: London (Hybrid) | Work Schedule: 2 days in-office | Salary: Competitive + BenefitsLead the definition, advocacy, and integration of secure software development lifecycle (SSDLC) practices and secure coding standards throughout engineering teams via collaboration, training, and the use of tools.Conduct threat modeling exercises for cloud-native applications, microservices, and various infrastructure components.Oversee internal and external penetration testing engagements for Funding Circle's applications, services, and cloud infrastructure.Work closely with Cloud Platform Engineers, DevX, and Product Engineering to embed security requirements into system designs and technology choices from the beginning.Serve as a subject matter expert in DevSecOps, application security, and cloud security (AWS), offering guidance and mentorship to fellow engineers.Drive the implementation of security automation across cloud infrastructure configuration, vulnerability management, and compliance monitoring.Design, implement, and promote the adoption of robust security architectures, controls, and best practices within our AWS cloud environment.

Ebury empowers ambitious businesses to unlock global growth, and we extend the same philosophy to our team members. We promote innovation, collaboration, and problem-solving, creating an inclusive environment where everyone feels valued, supported, and empowered to thrive.If you are a collaborative individual eager to transform how businesses operate on a global scale, we invite you to connect with us. Discover how Ebury can fast-track your career and help you shape the future.Senior Security Engineer - Cloud InfrastructureHybrid (4 days in office) in LondonEbury is making significant investments in its cloud infrastructure security to ensure the integrity and safety of our global financial services. As a Senior Security Engineer specializing in Cloud Infrastructure, you will be responsible for enhancing and managing the security posture of our cloud environments across AWS and GCP, focusing on network security, perimeter defense, and attack surface management.This hands-on position requires extensive expertise in cloud-native security controls, network architecture, and proactive defensive security operations. You will design, implement, and maintain security infrastructure that identifies and mitigates threats before they affect our operations. Collaborating closely with platform, infrastructure, and security operations teams, you will embed security best practices into our cloud foundations.Key ResponsibilitiesManage cloud security posture and attack surface: Ensure comprehensive visibility and control across AWS and GCP environments. Implement cloud-native security monitoring, detection, and alerting mechanisms to proactively identify and mitigate threats, establishing and enforcing security baselines through policy-as-code.Design and oversee web application firewall infrastructure: Maintain WAF configurations across AWS and GCP, creating and fine-tuning detection rules in line with application threat models and emerging attack patterns. Develop operational processes for rule management and incident response integration, collaborating with application teams to implement protections without disrupting availability.Architect network segmentation and isolation: Design and implement strategies ensuring proper separation between development, staging, and production environments. Define consistent patterns across multi-cloud infrastructure, apply zero-trust principles to workload communication, and document reference architectures for engineering teams.

Galaxy Digital Services seeks a Vice President, Senior Product Security Engineer for its London office. This role focuses on strengthening the security of microservices and cloud applications across a range of digital asset and trading platforms. The position reports to the Director of Product Security. Role overview The Senior Product Security Engineer will assess complex trading systems and blockchain architectures. Responsibilities include identifying vulnerabilities, recommending or implementing remediations, and ensuring security best practices are integrated throughout product and software engineering processes. Collaboration with Engineering, Product, and Infrastructure teams is central to this role, supporting secure software delivery as the company expands. What you will do Evaluate the security of microservices and cloud-based applications Conduct assessments of trading systems and blockchain architectures Facilitate or implement remediation efforts to address identified risks Work closely with cross-functional teams to deliver secure products Requirements Expertise in securing microservices and cloud applications Strong understanding of product and software engineering processes Experience with trading systems and blockchain security Ability to collaborate effectively with technical and product teams Our core values Pursue excellence Be selective to achieve effectiveness Maintain high alignment with loose coupling Encourage transparent disagreement Foster independent decision-making Assemble dream teams

As a Senior Software Engineer specializing in Proactive Security at Deliveroo, you will play a crucial role in safeguarding our platform against emerging threats. You will collaborate with cross-functional teams to design and implement robust security solutions that protect customer data and ensure the integrity of our systems.Your expertise in software development and security practices will be instrumental in identifying vulnerabilities and enhancing our security posture. This role will challenge you to think critically and innovate solutions in a fast-paced environment.