Senior Security Engineer

Senior Security Engineer

Apollo Research

Applications deadline: We are conducting interviews actively and aim to fill this role as soon as we find someone suitable.   THE OPPORTUNITY   We're looking for a senior Security Engineer to own security at Apollo Research from end to end. You'll be the first dedicated security hire at Apollo. Security at Apollo exists to maintain the trust of our frontier AI lab partners and enable our research mission. This role sits within the engineering team and reports directly to the CEO.   YOU HAVE THE OPPORTUNITY TO   - Build and own Apollo's security programme. Own the security roadmap, conduct risk assessments, and evolve the programme as the org grows. You decide what Apollo's security posture needs to look like given our size, threat model, and partner relationships. - Maintain the trust of our frontier AI lab partners. Become the primary security point of contact for partner security teams. Build relationships with partner CISOs, produce and maintain technical documentation on Apollo's security practices, and demonstrate that our security posture meets the bar required for our ongoing partnerships.  - Set security direction for engineering. Define security principles and AppSec strategy which the engineering team implements. Build paved roads that make the secure path easy for engineers. - Define how Apollo uses AI tools, agents, and integrations. Decide what's approved, what data can go where, and how new tools get vetted. This is a live and evolving challenge, and you'll need to balance security with the fact that researchers need to use cutting-edge tools to do their jobs. - Own the security tooling stack and automate security operations. Select, implement, and manage security controls including EDR/MDR, endpoint management, email protection, and identity management. Automate wherever possible: zero-touch deployments, IaC for security tooling, automated provisioning and deprovisioning. - Drive compliance and certification. Lead certification efforts (ISO 27001, SOC 2) as needed to meet partner requirements. Automate where needed and treat compliance as a byproduct of good security practice. - Own IT administration across the organisation. Manage Google Workspace, define access policies, and build secure onboarding and offboarding processes.   WHAT WE'RE LOOKING FOR   - Engineering mindset. You treat security operations and GRC as engineering problems. You reach for automation and systems solutions over manual processes. - Pragmatism. You understand that security exists to enable Apollo's mission and maintain partner trust, and you tailor your advice to our risk profile. - Leadership. You are capable of building out our security programme from scratch.  - Hands-on. In addition to leading the security programme, you are willing and able to drive implementation yourself. - Speed. You make good-enough decisions quickly and execute fast once a decision is made. - Adaptability to new developments. You have a strong base of knowledge that enables you to make decisions under uncertainty as AI tooling and the threat landscape evolve. - Stakeholder credibility. Non-security people trust you internally, and you can credibly represent Apollo to lab partner security teams externally.

Senior Security Engineer

Causaly

About us: Causaly is redefining how humans acquire knowledge and develop insights in biomedicine. Our AI-powered platform enables researchers and decision-makers to discover and interpret evidence from millions of scientific publications, clinical trials, regulatory documents, and other complex data sources in minutes. We are building the world’s most advanced biomedical knowledge platform, powered by a high-precision Knowledge Graph and GenAI capabilities. Our technology is already used by leading biopharmaceutical organizations to accelerate drug discovery, improve safety, and drive better decision-making. Backed by top-tier investors including ICONIQ, Index Ventures, Pentech, and Marathon, we are scaling rapidly and expanding our product suite and market presence.  About the Role We are looking for a Senior or Staff Security Engineer to join our security team and own our vulnerability management program, collaborate with several Engineering and Product teams as a Security advisor and support SecOps. You will operate with a high degree of autonomy — defining strategy, building processes, and acting as a trusted security advisor to our engineering organisation. What You'll Do * Own the vulnerability management program end-to-end: strategy, tooling, prioritisation, and remediation tracking across dependencies, containers, and cloud environments. * Define and maintain a dependency security strategy, including policies for third-party library adoption and update cadence. * Integrate and maintain security tooling in CI/CD pipelines (SAST, SCA, secrets detection, container scanning). * Act as a security consultant to product and engineering squads — supporting design reviews, architecture decisions, and secure coding practices. * Define and maintain security standards and guidelines practical for development teams. * Manage and continuously improve the Security Champions program — growing security awareness and capability across engineering teams. * Support SecOps in incident triage and response, contributing security engineering context where needed. Requirements * Strong knowledge of cloud security — IAM, network security, secure configuration best practices. * Hands-on experience with security tooling in CI/CD pipelines (SAST, SCA, secrets scanning, container scanning). * Proven experience in a vulnerability management role, through the entire lifecycle. * Passionate and knowledgeable about using LLMs for building robust security practices, including triage, secure code review, threat analysis and tooling * In-depth knowledge of secure coding practices in Node.js, TypeScript, Python, and/or React. * Familiarity with security frameworks and standards (e.g. OWASP, NIST, CIS Benchmarks). * Strong communication skills, with the ability to translate risk for both technical and non-technical audiences. Nice to Have * Experience with Semgrep for static analysis and custom rule authoring. * Experience with Wiz for cloud security posture management. * Experience running or contributing to a Security Champions program. * Experience with threat modelling (e.g. STRIDE). * Familiarity with SOC 2 and ISO 27001. * Relevant certifications are considered a plus (e.g. CISSP, IaaS specific certifications, etc..). Benefits UK: 💰 Competitive compensation package 🩺 Private medical insurance 🦷 Private dental insurance 📔 Life insurance (4 x salary) 🤓 Personal development budget 🧘 Individual wellbeing budget 🌴 25 days holiday plus bank holidays 🥳 Your birthday off! 🚀 Potential to have real impact and accelerated career growth as a member of an international team that's building a transformative AI product. We are on a mission to accelerate scientific breakthroughs for ALL humankind, and we are proud to be an equal opportunity employer. We welcome applications from all backgrounds and fairly consider qualified candidates without regard to race, ethnic or national origin, gender, gender identity or expression, sexual orientation, disability, neurodiversity, genetics, age, religion or belief, marital/civil partnership status, domestic / family status, veteran status or any other difference.

Senior Security Engineer

Abound

About Abound We’re redefining consumer lending in the UK, and beyond. Using advanced AI and Open Banking data, we make fair, affordable personal finance available to more people. While traditional lenders rely almost entirely on credit scores, we look at the full financial picture - how much you spend, and what you can afford to repay to build a deeper, more accurate understanding of each customer's unique financial situation. And we've shown it works at scale. We’ve issued over £1.3bn in loans directly to customers while delivering market-leading credit performance - for every 10 defaults the industry expects, we see only 3. We also reached profitability just 2.5 years after launch. Backed by £2bn+ of funding from top-tier investors including Citi, GSR Ventures, and Deutsche Bank, we’re recognised as one of Europe’s fastest-growing fintechs (Sifted, CNBC). Now, we’re expanding into new markets and product lines - and we’re looking for ambitious people who want to learn fast, take ownership, and grow with us. About the role: You won't be sitting in an ivory tower throwing policies over the fence. You will be embedded directly within our Platform team in a true DevSecOps capacity. Operating as a highly technical individual contributor, you will bridge the gap between product-led engineering and Corporate IT. You will play a hands-on role in challenging the security architecture of production and corporate IT infrastructure. In your first 6–12 months, you will design and implement our next-generation cloud security architecture across AWS and GCP, while helping to build and mature our internal SOC capabilities, including detection and response. You will take ownership of Microsoft Sentinel, enhancing our SIEM/SOAR capabilities, and strengthen identity and access management through improved and automated RBAC across AWS, Microsoft Entra, and internal systems. You will also drive a shift-left approach to security by embedding controls into GitLab CI/CD pipelines, including scanning, IaC reviews, and automated policy enforcement across the SDLC. Our technology stack: Cloud & Compute: AWS, ECS Fargate, Aurora, Lambda, GCP Data Lake: S3, DMS, Glue Cloud Security Tooling: GuardDuty, Security Hub, Inspector, Security Command Center Code & IaC: Python, Java, GitLab, AWS CDK, Terraform/CDK-TF Observability & Incident Management: AMP, Incident.io Who you are: * You are a security professional by trade, but a hacker by design. You have a strong track record in DevSecOps and cloud security engineering, with hands-on experience elevating the security posture of other organisations. * You are a strong Python developer. You know how to script automation, interact with APIs, and build security tooling from scratch. * You possess a rock-solid understanding of network security fundamentals and how they apply to modern, distributed cloud architectures. * You are comfortable owning both the build and run aspects of security—designing systems and responding to incidents. * You thrive in the dynamic, ambiguous, and fast-paced environment of a high-growth startup. You know how to balance rigorous security with engineering velocity. What you'll be doing: * Actively contribute infrastructure-as-Code (AWS CDK, Terraform) for security risks prior to deployment * Implement best practice network security across AWS and GCP (IAM, VPCs, encryption, logging, monitoring) * Embed zero-trust policies across the estate * Actively challenge the security standards of production applications and infrastructure * Embed security controls into CI/CD pipelines (SAST, dependency scanning, container security) * Partner with engineering teams on secure architecture and deployment patterns * Support secure SDLC practices and pre-deployment security reviews What we offer * Everyone owns a piece of the company - equity * Hybrid with 3 days a week in the office * 25 days’ holiday a year, plus 8 bank holidays * 2 paid volunteering days per year * One month paid sabbatical after 4 years * Employee loan * Free gym membership * Team wellness budget to be active together - set up a yoga class, a tennis lesson or go bouldering