{"id":16532,"url":"https://alion.io/job/mercor-security-engineer-cloud-infrastructure","title":"Security Engineer, Cloud Infrastructure","company":{"id":4960,"name":"Mercor","domain":"mercor.com","url":"https://alion.io/company/mercor","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":89,"open_postings":16,"ghost_share":0,"stale_share":0.25,"repost_share":0,"time_to_fill_p50_days":76,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130000,"max":400000,"currency":"USD","period":"year","gross":null,"usd_annual":400000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AWS","optional":false},{"name":"CloudFormation","optional":false},{"name":"IAM","optional":false},{"name":"Kubernetes","optional":false},{"name":"Least Privilege","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Prisma Cloud","optional":false},{"name":"Pulumi","optional":false},{"name":"Snowflake","optional":false},{"name":"Terraform","optional":false},{"name":"Wiz","optional":false},{"name":"Falco","optional":true},{"name":"FedRAMP","optional":true},{"name":"ISO 27001","optional":true},{"name":"SentinelOne","optional":true},{"name":"SOC 2","optional":true}],"status":"live","first_seen_at":"2026-04-15T22:13:32Z","employer_posted_date":"2026-04-15","last_verified_at":"2026-10-17T23:24:44Z","board_verified":true,"closed_at":null,"days_open":185,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":184},"description":"About Mercor\nMercor's mission is to organize human intelligence to power the AI economy. We're a leading AI data company, building the layer between human expertise and frontier models. Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models. Mercor's APEX benchmark family measures AI's real-world impact on professional work. Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents.\nMercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious, fast-paced and deeply committed team. You’ll work alongside researchers, operators, and AI companies at the forefront of shaping the systems that are redefining society. Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our San Francisco, NYC, or London offices.\nYou'll own cloud and infrastructure security at a company where tenant isolation is a critical enterprise requirement. Mercor's customers - including frontier AI labs - need hard guarantees that their data stays within strict boundaries. This is not a compliance checkbox role. You'll architect multi-account AWS isolation, harden Kubernetes clusters, deploy cloud security posture management, and build the infrastructure that lets Mercor serve enterprise clients who demand the highest security bar.\nWe use AI heavily in our own security work. You should be comfortable building alongside AI code-gen tools, using LLMs to accelerate infrastructure review and policy authoring, and automating away the repetitive work that slows infrastructure security down. If you'd rather write a Terraform module than fill out a spreadsheet, you'll fit in here.\nWe're in-person five days a week at our SF headquarters, with first Fridays remote.\nWhat You'll Build:\nMulti-account AWS tenant isolation architecture - dedicated accounts, SCPs, network boundaries, and data segregation for enterprise clients\n\nCloud security posture management using Wiz CSPM - continuous monitoring, misconfiguration detection, and automated remediation\n\nKubernetes security hardening - pod security standards, network policies, secrets management, and runtime protection\n\nInfrastructure-as-code security guardrails - Terraform/CloudFormation policies that prevent insecure deployments before they reach production\n\nIAM architecture and least-privilege access controls across AWS, Snowflake, and internal services\n\nIncident response infrastructure - logging pipelines, forensic readiness, and blast radius containment\n\nWhat We're Looking For\nDeep AWS security expertise - you've architected multi-account strategies, written SCPs, and hardened production environments\n\nExperience with Kubernetes security in production - not just tutorials, you've secured real clusters running real workloads\n\nStrong infrastructure-as-code skills - Terraform, CloudFormation, or Pulumi - you think in code, not console clicks\n\nExperience with CSPM/CNAPP platforms (Wiz, Prisma Cloud, or similar) - deploying, tuning, and driving remediation\n\nUnderstanding of network security at the cloud level - VPCs, security groups, transit gateways, PrivateLink\n\nYou've designed tenant isolation for multi-tenant SaaS - data segregation, compute isolation, network boundaries\n\n5+ years of professional experience in cloud security, infrastructure security, or platform/SRE engineering with a strong security focus\n\nBonus Points\nExperience with Snowflake security - schema-level isolation, access controls, data sharing governance\n\nFamiliarity with container runtime security (Falco, SentinelOne Cloud Workload Protection, or similar)\n\nOffensive cloud security skills - you've exploited misconfigurations and understand the attacker's perspective\n\nExperience building compliance-ready infrastructure (SOC 2, ISO 27001, FedRAMP)\n\nYou've handled cloud security incidents - forensics, containment, and root cause analysis in AWS\n\nContributions to open source infrastructure security tools\n\nWhy Mercor\nThe deliverable is concrete. Enterprise clients require tenant isolation as a baseline. You'll build infrastructure that directly enables the business.\n\nAI-native infrastructure security. You'll use frontier AI tools daily - for policy authoring, misconfiguration analysis, and anything that benefits from an AI co-pilot.\n\nOwnership from day one. You'll own the entire cloud security domain - from AWS architecture to Kubernetes hardening to CSPM operations.\n\nSee the future early. Working alongside AI labs means you'll understand frontier model capabilities months before the market.\n\nBenefits\nBi-annual performance bonus structure\n\nGenerous equity grant vested over 4 years\n\nUp to $15k Relocation bonus\n\n$10K housing bonus (if you live within 0.5 miles of our office)\n\n$1.5K monthly stipend for meals\n\nFree Equinox membership\n\n$200 monthly laundry reimbursement\n\n$200 monthly personal wellness reimbursement\n\nHealth, Dental, Vision insurance","description_format":"text","description_chars":5083,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Vision insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":true,"industries":["Recruiting & Staffing","Freelance & Talent Marketplaces","AI Training Data & Annotation"],"lifecycle":[{"event":"open","at":"2026-04-15T22:13:32Z"}],"visa":[],"liveness":{"score":15,"band":"cold","label":"Long shot","p_open":1,"p_active":0.528,"p_room":0.28,"age_days":184,"expected_fill_days":76,"reasons":["conf:1","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":400000,"is_top_pay":true},"html_url":"https://alion.io/job/mercor-security-engineer-cloud-infrastructure","json_url":"https://alion.io/job/mercor-security-engineer-cloud-infrastructure.json","meta":{"generated_at":"2026-10-17T23:31:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":1822,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4960},"rest":"https://alion.io/mcp/rest/get_company?id=4960"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmercor-security-engineer-cloud-infrastructure"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fmercor-security-engineer-cloud-infrastructure"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fmercor-security-engineer-cloud-infrastructure"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/mercor-security-engineer-cloud-infrastructure\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmercor-security-engineer-cloud-infrastructure"}]}