Security Engineer Lead
$200kPeople Culture Talent
Note: We are recruiting on behalf of our valued client. This opportunity is for a position with their organization, not with People Culture Talent. We're excited to help connect talented professionals with this exceptional team! Role Senior Security Lead – design and lead the strategy and hands‑on implementation of systems that protect the integrity of Arena Intelligence, a multi‑million user AI platform shaping the future of how the world measures artificial intelligence. You’ll work across product, infrastructure, and data pipelines to proactively identify risks, embed security into core features, and build scalable defenses against abuse, fraud, and adversarial behavior. Builder role: not only set technical direction but also write the code, build the tools, and design the frameworks that make security and trust part of this product’s DNA. Responsibilities Own the product security vision, ensuring security and trust are core to every stage of the product lifecycle. Design and implement platform‑wide security features, including Sybil resistance, bot detection, reputation systems, and anti‑abuse primitives. Lead threat modeling and security architecture reviews for new and existing product features. Collaborate with infrastructure and product engineering to design secure APIs, data flows, and identity systems that scale. Improve developer velocity by creating secure‑by‑default frameworks and tooling for internal teams. Partner with incident response to quickly assess, contain, and remediate security events, and lead deep postmortems to improve defenses. Stay ahead of the curve by monitoring emerging attack techniques and applying cutting‑edge security research to our platform. Mentor engineers across the company on secure coding practices, architecture trade‑offs, and operational security. Qualifications 8+ years of experience in software engineering or security engineering, including staff‑level scope in securing large‑scale, user‑facing platforms. Proven track record designing and implementing systems to detect, mitigate, and prevent adversarial behavior (bots, Sybil attacks, automated abuse). Strong experience with threat modeling, secure architecture design, and risk assessment. Hands‑on experience building security features into production systems at scale (millions of DAU / billions of requests). Proficiency in backend development (Node.js, TypeScript, Python, or Go) and willingness to work across the stack when needed. Strong knowledge of distributed systems security, identity, and authentication mechanisms. Excellent communication skills, able to build alignment across engineering, product, and leadership teams. Bonus Points Experience in adversarial ML, trust & safety systems, or securing voting/reputation platforms. Familiarity with advanced detection methods, user fingerprinting, or behavioral analytics. Contributions to open‑source security tools or research. Background in securing real‑time, interactive platforms at scale. Built real‑time detection systems and post‑processing pipelines to identify attacks on large‑scale systems. Compensation Band Their openings span more than one career level. The starting salary for this role is $200k and could range up to $400k USD, plus equity. The provided salary depends on many factors, such as work experience and transferable skills, business needs and impact, and market demands. Benefits Comprehensive health, dental, vision, and additional support programs. The opportunity to work on cutting‑edge AI with a small, mission‑driven team. A culture that values transparency, trust, and community impact. Visa sponsorship available. About Our Client Arena Intelligence is redefining what "better" means in AI. Built by researchers from UC Berkeley's SkyLab and backed by Felicis, Andreessen Horowitz, Kleiner Perkins, Lightspeed, and the University of California, this open evaluation platform has become the definitive source for understanding how AI models actually perform in the real world. With over a million daily users and the trust of every major AI lab—including OpenAI, Google, and Anthropic—their crowdsourced benchmarks and human preference data power the decisions shaping the future of artificial intelligence. Their leaderboards aren't just influential; they're the industry standard. Behind the platform is a team of researchers, engineers, and builders from UC Berkeley, Google, Stanford, DeepMind, and beyond — people who seek truth, move fast, and care deeply about craftsmanship and impact. They're building a company where deep expertise meets curiosity, and where the work genuinely matters. #J-18808-Ljbffr People Culture Talent
$160k - $200k
...Google Lens. Before that, Clay led the product and design teams for Google Workspace. What you’ll doAs the founding Corporate Security Engineer, Lead at Sierra, you will define and build our Corporate Security capability within IT — establishing the operating model,...SuggestedFull timeFlexible hours- Sierra is seeking a founding Corporate Security Engineer in San Francisco to establish their Corporate Security capability within IT. The role involves building the operating model, managing risks across SaaS and integration landscapes, and improving security tools and...SuggestedFlexible hours
- A leading cloud security firm is seeking a Senior Cloud Security Engineer to ensure the security and compliance of their cloud infrastructure. The role involves developing security policies, mentoring teams, and conducting audits for compliance with industry standards....SuggestedRemote workFlexible hours
- A remote-first AI governance company is seeking a Principal AI Security & Risk Researcher to lead security research and build frameworks for assessing AI risks. In this part-time role, you will design adaptive security systems, collaborate on automated testing tools, and...SuggestedPart timeRemote workFlexible hours
$234.4k - $385k
...artificial general intelligence benefits all of humanity. The Security team protects OpenAI’s technology, people, and products. We are... ...engaging a robust security culture. About the RoleAs a Security Engineer, Application Security you will be responsible for identifying and...SuggestedWork at officeRemote workRelocation packageFlexible hours$200k - $220k
...employees, their laptops, their identities, and the SaaS apps they rely on every day.We are looking for a hands-on Corporate Security Engineer to own and improve the technical controls that keep our workforce and corporate environment safe. This is a security engineering...Work at officeLocal area$146.3k - $257.7k
About WRITERWRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to... ...of work with AI. About the roleThis is where security meets innovation at enterprise scale. As a security engineer, applications at WRITER, you'll be building the...Full timeWork at officeLocal area$237.6k - $297k
We are seeking a highly technical Security Engineer to join our Product Security team. This role is integral to ensuring the security and integrity... ...data and full-stack technologies that power the world's leading models, and help enterprises and governments build, deploy,...Full time- ...privacy by design and customer trust. You will implement frameworks like SOC 2, ISO 27001 and HIPAA, ensure GDPR/CCPA/CPRA compliance, design scalable audit processes and a robust GRC platform, and help lead regulatory strategy for AI safety. #J-18808-Ljbffr Perplexity
- Alembic Technologies seeks a lead-level Security Engineer and Architect to own end-to-end security for our rapidly growing on-prem, Kubernetes-based AI factory. This hands-on role reports to the CTO/CISO and partners with Technical Operations, Corp IT, Platform Engineering...
- ...Jared Kushner and Elad Gil, and backed by leading Silicon Valley builders including... ...the automation, and partner directly with engineering, legal, sales, and customer - not advising... ...reviews, data flow inventory, contractual security obligations, and a reassessment cadence...WorldwideDay shift
- Alembic is seeking a lead-level Security Engineer and Architect in San Francisco to oversee security for our AI factory. In this hands-on role, you'll design security controls, manage incident responses, and ensure the protection of high-value client data while respecting...
$230k - $385k
...that artificial general intelligence benefits all of humanity.The Security team protects OpenAI’s technology, people, and products. We are... ...security culture.About the RoleOpenAI is seeking a Security Engineer to join our Infrastructure Security (InfraSec) team. InfraSec protects...Work at officeLocal areaFlexible hours$135.48k - $204.93k
...Sr. Security Engineer I - Enterprise Security Remote - Austin Who we are Samsara (NYSE: IOT) is the pioneer of the Connected Operations... ...with a diverse set of technologies and practices to build a leading program in our industry. You enjoy teaching and supporting...Remote workRelocation packageFlexible hours$165k - $242k
...and scale AI with confidence. Trusted by leading AI labs, startups, and global... ...What You’ll Do: The Enterprise Security team at CoreWeave is responsible for securing... ...About the Role: As a Senior Security Engineer, Enterprise Security , you’ll design and...Permanent employmentFull timeTemporary workFor contractorsCasual workWork at officeRemote workFlexible hours- ...why we're able to serve a wide range of leading companies. For example, Reddit relies on... ...identity verification infrastructure where security isn't a layer we add later, it's core to... ...'ll work alongside experienced security engineers to defend Persona's people, devices, and...Full timeFor contractorsInternshipWork at officeWork from homeRelocation packageMonday to FridayFlexible hours
- ...Palo Alto Networks, Inc. is seeking a Sr. Principal Software Engineer to enhance secure cloud environments with an AI-first approach. This role involves leading cloud security automation and implementing innovative infrastructure solutions. The ideal candidate should...
$347k
...intelligence benefits all of humanity.The Security team protects OpenAI’s technology, people... ...is seeking a Principal Security Engineer to join our Infrastructure Security (InfraSec... ...sophisticated adversaries and insider threats.Lead cross-functional programs to deploy...Work at officeLocal areaFlexible hours- ...Valued at US$6.2 billion and backed by world-leading investors including Visa, Airtree,... ...About the team The Airwallex Information Security Team is a high calibre and highly... ...app security, Corporate IT and broader engineering functions. What you’ll do As a Senior...Full timeWorldwide
- ...speeds. About You and The Role Product security at Zipline protects systems that... ...embedded, and field-ops teams. Expect hands-on engineering work, prioritized ownership of specific... ...drive their rollout to completion. Lead vulnerability management end-to-end for...Local area
$175k - $220k
About the RoleWe are looking for a highly technical Senior Security Engineer who is passionate about protecting data across modern SaaS, cloud, endpoint, and analytics environments.This role is ideal for someone who enjoys solving complex data security challenges through...Full timeWork at office- ...advancing the state of AI while maintaining the highest standards of safety, security, and integrity in every aspect of our work. About the Team The Defensive Security Agent Engineering team plays a critical role in safeguarding OpenAI’s infrastructure, systems,...Full timeWork at officeRelocation package3 days per week
$188.75k - $242.68k
...Francisco with offices in New York, Washington D.C., London and Amsterdam.Security Engineering is the engineering function inside the Plaid security org that focuses on developing the industry-leading security systems and infrastructure. Security Engineering owns most of...Work experience placementLocal area$150.1k - $227k
...to level-up your career at the company leading workforce transformation in the agentic... ...building a brand new Professional Services Security Assurance (PSSA) team — a true 0 to 1... ...prioritized remediation plans and partnering with engineering teams to drive security improvements....Full time$146.3k - $257.7k
About WRITERWRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand... ...of work with AI. About the roleJoin WRITER's security team as a staff detection and response engineer and help protect the AI infrastructure that's transforming...Full timeWork at officeLocal area$134k - $205k
...stretch, and do work that truly matters, Gong is the place to do the best work of your career.We’re looking for a Senior Corporate Security Engineer to help secure the systems, identities, devices, and collaboration platforms that power how Gong employees work every day.This...Remote workWork from homeFlexible hours$208k - $312k
...products that help builders move from idea to production with speed, security, and exceptional developer experience.Now, software is entering... ...what comes next.About the Role:We are looking for a Security Engineer to join our Detection Response team. In this role, you will be...Work at officeRemote workWork from homeWorldwideMonday to FridayFlexible hoursShift work- ...innovative solutions and helping to solve real business problems for a wide variety of valued clients.We're looking for a Microsoft Security Engineer who brings curiosity, initiative, and a genuine passion for security. This is an opportunity to join a collaborative team...Full time
$112k - $209k
...our search for talented visionaries and your search for important and impactful work lead to the same place.The global law firm of K&L Gates LLP is seeking a Senior Security Engineer to join the firm. The Senior Security Engineer develops, automates, and enhances security...Full timeTemporary workWork experience placementLocal areaRemote work$200k - $225k
...our team as we help shape a brighter way forward. The Senior Security Engineer, AI Enablement is Security's embedded, full-time representative... ...(JLL), together with its subsidiaries and affiliates, is a leading global provider of real estate and investment management services...Full timeLocal areaImmediate startRemote work
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