{"schemaVersion":"jobsearcher.job.v1","id":"55c457c0570ebac5f1a49f0e","url":"https://jobsearcher.com/jobs/55c457c0570ebac5f1a49f0e","canonicalUrl":"https://jobsearcher.com/jobs/55c457c0570ebac5f1a49f0e","title":"Security Engineer","description":"About The RoleYou’ll work on security across a platform that processes large volumes of sensitive data, including AI training pipelines, expert payments, and enterprise integrations. This is a hands-on engineering role focused on building and improving the systems that keep Mercor secure.We use AI heavily in our own security work. You should be comfortable building alongside AI code-gen tools, using LLMs to accelerate threat analysis, and automating away the repetitive work that slows security teams down. If you're the kind of engineer who writes a script instead of filing a ticket, you'll fit in here.We're in-person five days a week at our San Francisco headquarters, with first Fridays remote. New York could be an option for the right candidate.What You'll BuildDetection and response pipelines that catch real threats, not checkbox alertsSecurity automation that replaces manual processes - if you're doing something twice, automate itInfrastructure hardening across AWS, Kubernetes, and our production environmentIdentity and access controls for a platform serving 300K+ experts and enterprise clientsApplication security tooling integrated into CI/CD - shifting security left without slowing down deploysIncident response runbooks and tooling - when something breaks, you'll own the fix end-to-endWhat We're Looking ForYou've built security tooling or automation in a previous role - not just operated existing toolsStrong in Python, Go, or TypeScript - you ship code, not slide decksExperience hardening cloud infrastructure (AWS preferred) - VPCs, IAM, container securityYou understand application security at the code level - can review a PR for auth bugs, not just run a scannerComfortable with detection engineering - writing rules, tuning alerts, reducing noiseYou've done incident response and know what it means to be on-call when things break5+ years of professional experience in security engineering, software engineering, or a related builder roleBonus PointsExperience at a high-growth startup or fast-moving engineering orgFamiliarity with AI/ML security - model access controls, training data protection, prompt injectionOffensive security skills - pen testing, bug bounty, red team experienceContributions to open source security toolsYou've built something from scratch that a team still usesWhy MercorBuild, don't babysit. We automate the boring stuff. You'll spend your time building systems, not reviewing access requests.AI-native security. You'll use frontier AI tools daily - for code review, threat analysis, detection writing, and anything that benefits from an AI co-pilot.Ownership from day one. You'll own meaningful security surface area, not a single dashboard.See the future early. Working alongside AI labs means you'll understand frontier model capabilities months before the market.BenefitsBi-annual performance bonus structureGenerous equity grant vested over 4 yearsUp to $15k Relocation bonus$10K housing bonus (if you live within 0.5 miles of our office)$1.5K monthly stipend for mealsFree Equinox membership$200 monthly laundry reimbursement$200 monthly personal wellness reimbursementHealth, Dental, Vision insuranceCompensation Range: $130K - $400K","company":"Mercor","rawCompany":"mercor","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-04-09T06:07:41.376Z","occupations":[{"code":"15-1299.05","title":"Information Security Engineers","slug":"information-security-engineers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Security Engineer","description":"About The RoleYou’ll work on security across a platform that processes large volumes of sensitive data, including AI training pipelines, expert payments, and enterprise integrations. This is a hands-on engineering role focused on building and improving the systems that keep Mercor secure.We use AI heavily in our own security work. You should be comfortable building alongside AI code-gen tools, using LLMs to accelerate threat analysis, and automating away the repetitive work that slows security teams down. If you're the kind of engineer who writes a script instead of filing a ticket, you'll fit in here.We're in-person five days a week at our San Francisco headquarters, with first Fridays remote. New York could be an option for the right candidate.What You'll BuildDetection and response pipelines that catch real threats, not checkbox alertsSecurity automation that replaces manual processes - if you're doing something twice, automate itInfrastructure hardening across AWS, Kubernetes, and our production environmentIdentity and access controls for a platform serving 300K+ experts and enterprise clientsApplication security tooling integrated into CI/CD - shifting security left without slowing down deploysIncident response runbooks and tooling - when something breaks, you'll own the fix end-to-endWhat We're Looking ForYou've built security tooling or automation in a previous role - not just operated existing toolsStrong in Python, Go, or TypeScript - you ship code, not slide decksExperience hardening cloud infrastructure (AWS preferred) - VPCs, IAM, container securityYou understand application security at the code level - can review a PR for auth bugs, not just run a scannerComfortable with detection engineering - writing rules, tuning alerts, reducing noiseYou've done incident response and know what it means to be on-call when things break5+ years of professional experience in security engineering, software engineering, or a related builder roleBonus PointsExperience at a high-growth startup or fast-moving engineering orgFamiliarity with AI/ML security - model access controls, training data protection, prompt injectionOffensive security skills - pen testing, bug bounty, red team experienceContributions to open source security toolsYou've built something from scratch that a team still usesWhy MercorBuild, don't babysit. We automate the boring stuff. You'll spend your time building systems, not reviewing access requests.AI-native security. You'll use frontier AI tools daily - for code review, threat analysis, detection writing, and anything that benefits from an AI co-pilot.Ownership from day one. You'll own meaningful security surface area, not a single dashboard.See the future early. Working alongside AI labs means you'll understand frontier model capabilities months before the market.BenefitsBi-annual performance bonus structureGenerous equity grant vested over 4 yearsUp to $15k Relocation bonus$10K housing bonus (if you live within 0.5 miles of our office)$1.5K monthly stipend for mealsFree Equinox membership$200 monthly laundry reimbursement$200 monthly personal wellness reimbursementHealth, Dental, Vision insuranceCompensation Range: $130K - $400K","datePosted":"2026-04-09T06:07:41.376Z","dateModified":"2026-04-09T06:07:41.376Z","hiringOrganization":{"@type":"Organization","name":"Mercor","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"55c457c0570ebac5f1a49f0e"},"url":"https://jobsearcher.com/jobs/55c457c0570ebac5f1a49f0e"}}