Security Engineer, Detection and Response

About Our TeamAt OpenAI, security serves as the cornerstone of our commitment to harnessing artificial general intelligence for the betterment of humanity. Our dedicated Security team safeguards our innovative technologies, talented personnel, and exceptional products. With a strong focus on impactful solutions, we prioritize enabling our researchers, anticipating future technological advancements, and nurturing a robust security culture.About the PositionWe are seeking a proactive Security Engineer to join our dynamic team of engineers and researchers in developing, operating, and securing groundbreaking AI technologies. This role will specialize in Detection & Response, encompassing infrastructure and operational responsibilities, while also contributing as a versatile team member across our Security initiatives. Your key responsibilities will include:Leading projects across essential security domains such as Application Security, Infrastructure Security, Offensive Security, and Detection & Response.Creating innovative solutions to address unique security challenges.Collaborating on pioneering AI research and utilizing AI technologies to enhance OpenAI's security framework.This position is based in London, UK, employing a hybrid work model that includes three days in the office per week. We also provide relocation assistance for new hires.Your Responsibilities Will Include:Innovating within the Detection and Response infrastructure.Developing tools for managing the lifecycle of detection rules.Creating, evaluating, and fine-tuning detection rules to ensure effective, sustainable operations.Automating manual incident response processes.Ensuring comprehensive visibility and control of OpenAI’s endpoint fleet (macOS, Windows).Enhancing identity access management (IAM), device management, productivity tools, and public cloud environments (e.g., AWS, Microsoft Azure).You Are a Great Fit if You Have:Experience in security or a related field.Familiarity with Microsoft Azure and/or other cloud infrastructure platforms.Knowledge of contemporary adversary tactics, techniques, and procedures.

Role Overview Writer is hiring a Security Engineer focused on Detection and Response for the London office. This position centers on protecting systems and data by identifying, analyzing, and mitigating security threats. What You Will Do Monitor for suspicious activity and potential breaches across Writer’s infrastructure. Analyze incidents and coordinate responses to minimize risk and impact. Work with fellow engineers and analysts to design and implement security measures. Help select and refine tools and processes for incident detection and response. Collaboration and Impact This role works closely with the broader cybersecurity team. Decisions and recommendations from this position directly influence Writer’s security posture and resilience against attacks.

Join Canva as a Senior Security Engineer specializing in Incident Response, where your expertise will play a crucial role in safeguarding our digital assets. You will lead the charge in investigating security incidents, implementing security measures, and collaborating with cross-functional teams to strengthen our overall security posture. Your analytical skills and proactive approach will ensure that Canva remains a safe and secure platform for our users.

ASOS is looking for a Security Specialist in London with experience in Security Operations Center (SOC) activities and incident response. This role helps protect the company’s digital assets by monitoring for threats and managing security incidents as they arise. Main responsibilities Monitor company systems and networks to identify potential security threats and unusual activity. Respond to security incidents, coordinating with teams across the business to contain and resolve issues. Contribute to the development and maintenance of security policies, procedures, and incident response plans. Keep up to date with the latest security threats, vulnerabilities, and trends. Collaboration This position works closely with teams from different parts of the business to help safeguard ASOS’s systems and data.

Join Our Team as a Security EngineerAt incident.io, we are transforming incident response with our cutting-edge AI platform, dedicated to minimizing response times and enhancing reliability. Our comprehensive solution integrates on-call management, incident response, AI SRE, and status updates into one seamless platform, empowering teams to act swiftly, reduce outages, and keep their customers informed.Since our inception in 2021, we have successfully assisted over 1,500 organizations, including renowned names like Netflix, Airbnb, and Block, in managing over 500,000 incidents. Each month, thousands of engineers, product managers, and support staff rely on incident.io to restore services efficiently, maintain alignment during high-pressure situations, and focus on what truly matters.We are a rapidly expanding, ambitious team that values our customers, the quality of our product, and the magic we create together. With $100M raised from prestigious investors like Index Ventures, Insight Partners, and Point Nine, along with contributions from top executives in the tech industry, we’re poised for significant growth.Your RoleAs our inaugural Security Engineer, you will play a vital role in our product teams, ensuring application security is integrated from the foundational stages. Collaborating closely with engineers, you will identify vulnerabilities before they progress to production, mentor your peers on secure coding practices, and foster a culture where security is a primary focus.This position offers a unique opportunity to work at the intersection of security and engineering, contributing to the design and development of secure systems that align with our commitment to customer satisfaction.

Blockchain.com is at the forefront of revolutionizing the financial landscape. As a leading global cryptocurrency platform, we empower millions to securely engage with digital assets. Since our launch in 2011, we have garnered the trust of over 90 million wallet holders and facilitated more than $1 trillion in crypto transactions.Blockchain.com is the premier software platform for digital assets, providing the world's most extensive production blockchain platform. Our mission is to drive innovation, foster creativity, and build a transparent and equitable financial future through cutting-edge software development.We are seeking talented software engineers from diverse technical backgrounds with a solid history of designing scalable, reliable, and high-performance systems. In this pivotal role as a Senior Back-End Engineer, you will lead technical discussions, influence strategic decisions, and contribute to the team's growth by championing exemplary engineering practices.

Recorded Future brings together over 1,000 intelligence professionals to support more than 1,900 clients worldwide. The company focuses on providing intelligence solutions at a global scale. Role overview The Incident Response Analyst joins the Incident Response Team in the Enterprise Security division based in London. This position covers several key areas: security operations, incident response, risk management, compliance, and security training. The team works to protect the organization and its clients by responding to security incidents and strengthening overall security posture. What you will do Assist with day-to-day security operations and incident response tasks Support ongoing risk management and compliance activities Contribute to security awareness and training programs Requirements Strong foundational understanding of security principles across multiple areas Genuine interest in building a career in cybersecurity Proactive mindset for problem-solving and continuous learning This position is a good fit for junior professionals who want to develop their skills and grow within the cybersecurity sector.

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

airapps is hiring a Security Engineer to help safeguard digital assets and infrastructure in the London Metropolitan Area. This role centers on identifying weaknesses, managing security risks, and ensuring strong security measures are in place. Key responsibilities Identify vulnerabilities throughout information systems Reduce and address security risks as they arise Implement and maintain effective security protocols Support efforts to comply with relevant industry standards Help strengthen the company’s overall security posture Location This position is based in the London Metropolitan Area.

ABOUT AvolutionJoin Avolution, a prestigious global leader in Enterprise Architecture Software with over 20 years of experience. Our established presence spans across London, Sydney, Northern Virginia, and Singapore, and we are recognized in the Gartner Magic Quadrant as an industry frontrunner. Become part of our intelligent, friendly team, where your skills and initiative will drive our growth while enjoying a culture rated as collegial, collaborative, flexible, and supportive by our employees.Key ResponsibilitiesCloud & Infrastructure SecurityDesign, manage, and enhance security configurations across Azure and AWS environments, ensuring seamless integration with Office 365.Implement and enforce industry best practices for identity and access management (IAM) in Azure AD (Entra ID) and AWS IAM.Monitor cloud workloads for vulnerabilities, misconfigurations, and threats utilizing tools such as Microsoft Defender.Collaborate with DevOps/Engineering teams to embed security controls into CI/CD pipelines, advocating for DevSecOps principles.Conduct thorough security assessments, including aiding in penetration testing and risk evaluations to identify and mitigate potential vulnerabilities.Endpoint & Identity SecurityEnhance device posture, compliance, and management utilizing Microsoft Intune and Defender for Endpoint.Develop and maintain solid conditional access, multi-factor authentication (MFA), and endpoint protection policies.Oversee secure identity lifecycle processes, enforcing least-privilege access and zero-trust principles.Security OperationsRespond promptly to security alerts, incidents, and vulnerabilities with thorough investigations and remediation actions.Perform regular risk assessments, security reviews, and internal audits.Manage and optimize security tools, including SIEM, EDR, vulnerability scanners, and the Microsoft Defender suite.Lead incident response efforts and coordinate with cross-functional teams.Compliance & GovernanceSupport ISO 27001:2022 recertification and ongoing compliance activities, including internal audits.Prepare for and assist in obtaining additional compliance certifications (e.g., SOC 2, GDPR) to facilitate company growth.Develop, maintain, and enhance security policies, procedures, and technical documentation.Track, report on, and address audit findings or compliance gaps.Collaboration & CulturePartner with globally distributed teams across EMEA, AMER, and APAC regions.Educate internal teams on security best practices and cultivate a security-first culture through training and awareness initiatives.

Role Overview Aircall is looking for a Security Engineer focused on Product Security to help protect our products and platform. This role is based in our London office. What You Will Do Work with teams across engineering, product, and other functions to spot vulnerabilities and address them early in the development process. Implement security measures that fit our product development lifecycle. Lead security initiatives that strengthen customer trust and protect sensitive data. Support efforts to keep our security standards high as our platform evolves. Impact This role directly shapes the security of Aircall’s products and the safety of customer data. The work supports our commitment to strong security practices and helps maintain trust with our users.

Join Us in Shaping the Future of Cyber Security.At Quantexa, we believe in the power of innovation and continuous improvement. Our mission is to forge meaningful relationships with our clients and drive impactful change across various industries. With a diverse workforce comprising over 50 nationalities and 20 languages spoken, we foster an inclusive environment where every voice matters. Here, you will find the autonomy and support needed to craft a career that aligns with your aspirations.The Role.We are seeking a proactive and technically skilled Cyber Security Engineer to join our Security Operations team. In this hands-on role, you will be instrumental in safeguarding Quantexa's digital assets. Your responsibilities will include the operational management, optimization, and monitoring of essential security platforms, focusing on Zscaler, cloud monitoring via Wiz, and endpoint detection and response through CrowdStrike.Collaborating closely with the broader Security Operations team, you will ensure that security alerts, findings, and detections are efficiently triaged, validated, documented, and remediated. Your contributions will directly enhance Quantexa's security posture by minimizing risk, bolstering detection capabilities, and ensuring timely responses to security incidents.This position is ideal for a curious and detail-oriented professional who thrives on working with cutting-edge security tools, embraces disciplined execution, and seeks opportunities for ongoing improvement.Your Responsibilities.Wiz (Cloud Security Posture Management)Daily monitoring and triaging of Wiz findings, validating alerts and assessing operational impact.Engaging in tuning and threat hunting within Wiz and other security tools.Identifying misconfigurations, excessive permissions, and exposed assets while escalating issues as necessary.Tracking remediation progress with engineering teams and ensuring the resolution of high-priority issues.Zscaler (Web Security Tunnel 2.0)Reviewing and triaging Zscaler alerts and policy violations according to documented response procedures.Investigating suspicious traffic, access attempts, and user activity to determine legitimacy.

About the Position Jane Street is seeking a skilled Identity Security Engineer with expertise in engineering hybrid Windows platforms to become a vital member of our expanding team. Our IT Security team is committed to safeguarding access to Jane Street's IT systems. In this role, you will be instrumental in enhancing the organization's security posture through a blend of hands-on technical work and collaborative efforts with cross-functional engineering teams to initiate transformative security projects. Key Responsibilities: Serve as a technical security authority, offering insights on EntraID, M365, Azure tools, and security best practices. Lead the implementation and validation of robust security controls to minimize attack pathways between on-premises and external platforms. Identify security vulnerabilities and recommend operational improvements to meet our security standards. Provide technical guidance and influence cross-functional technology teams to facilitate cloud adoption. We are looking for an individual ready to make an immediate impact, capable of prioritizing work in a fast-paced environment. This position is more than just execution; we will rely on your judgment and quick thinking to guide our remediation and mitigation strategies for our Windows infrastructure. Your decisions will have far-reaching implications across the firm. About You: Possess a solid understanding of Microsoft security policies and configurations across Microsoft cloud services (SaaS/PaaS), IAM, and Privilege Access Management. Exhibit a strong grasp of industry-standard SSO technologies and authentication protocols (OpenID Connect, SAML, OAuth, Kerberos, LDAP, etc.). Have experience designing, implementing, and supporting Microsoft security infrastructure in live environments. Provide security recommendations regarding certificate policies, templates, and key sizes to uphold secure cryptographic standards. Manage and secure Azure resources utilizing a code-driven methodology. Be eager to develop scalable and repeatable security practices through automation, including certificate enrollment and renewal processes. Fluent in English. If you are a recruiting agency interested in partnering with us, please reach out to agency-partnerships@janestreet.com.

Join our dynamic team at Lendable as a Cyber Security Engineer, where you will play a pivotal role in safeguarding our digital assets and ensuring the integrity of our systems. In this position, you will be responsible for the design, implementation, and maintenance of security protocols across our network and applications. You will work closely with cross-functional teams to identify vulnerabilities and develop strategies to mitigate risks.

At Trustpilot, we are on an exciting journey as a profitable, high-growth FTSE-250 company with a bold vision: to be the universal symbol of trust. We operate the largest independent consumer review platform globally, and while we've achieved significant milestones, there's much more exhilarating work ahead. Join us at the forefront of trust!We are in search of an inquisitive and analytical Fraud Detection Analyst to become part of our global Fraud & Investigations team. In this role, you will analyze data, identify trends, and formulate detection rules that play a crucial role in preventing fraud, thereby protecting consumers, businesses, and the integrity of our platform.You'll tackle complex and often ambiguous challenges in the dynamic landscape of online trust. If you are passionate about problem-solving, delving into data, and making a significant impact, this is your opportunity.Joining a collaborative and inquisitive team that values transparency, fairness, and humor, you will contribute to the broader Trust & Transparency team, driving change across the organization and helping us achieve our vision of being the online symbol of trust.Key Responsibilities:Analyze fraud patterns and develop a comprehensive understanding of fraudulent behavior on our platform using SQL, Google BigQuery, and Google Looker.Create rules based on your analysis to mitigate fraudulent activities across our platform.Investigate escalated cases related to potential misuse of our platform and support media, legal, and customer inquiries.Collaborate with data science experts to enhance our technological and procedural methods for identifying fraud.Work closely with engineering teams to improve internal tools and databases that bolster our fraud prevention efforts.Serve as a key resource for other departments by analyzing customer and reviewer behavior on the platform.Communicate findings from analyses and investigations to various stakeholders across the department and the wider company.Report directly to our Lead Fraud & Investigation Analyst.

Join our esteemed Digital Forensics and Incident Response team in London as an Associate Consultant or Consultant. In this pivotal role, you will leverage your technical expertise to deliver consultative solutions in Digital Forensics, Incident Response, Cyber Security, and eDiscovery to a diverse clientele that includes Law Firms, Fortune 500 companies, and Government entities. You will act as a technical lead on various cases, collaborating closely with our regional and international Discovery & Data Insights teams (DFIR/Legal Technologies/Data Analytics) as well as our Cyber Response, Crisis Management, and Investigations teams. Additionally, you will play a key role in business development by contributing your subject matter expertise to articles, presentations, and marketing initiatives.Key Responsibilities:Provide expert consultancy and forensic/incident response services, including data collection, investigative analysis, and cyber security solutions for our clients.Support Investigation teams across different regions, ensuring high-quality deliverables are provided efficiently and in a timely manner.Ensure all work adheres to evidential standards and is defensible in legal contexts.Offer expert testimony in court as needed.Innovatively engage in team collaboration and initiate creative solutions to enhance efficiency.Proactively anticipate client needs and drive conversion of inquiries into sales leads and proposals.Actively participate in marketing and business development strategies.Availability for international travel, up to 25% of the time.

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.

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.

Join our dynamic team at Blockchain as an Infrastructure Security Engineer. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust security architectures to safeguard our cutting-edge blockchain technologies. Your expertise will be essential in identifying vulnerabilities, managing security incidents, and ensuring compliance with industry standards.We are looking for a passionate individual who thrives in a fast-paced environment and is eager to contribute to the future of decentralized technologies.