{"id":4213795,"url":"https://alion.io/job/palantir-technologies-information-security-engineer-infrastructure-security-3","title":"Information Security Engineer - Infrastructure Security","company":{"id":24,"name":"Palantir Technologies","domain":"palantir.com","url":"https://alion.io/company/palantir","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"C","score":65,"open_postings":229,"ghost_share":0.493,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":167,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"CI/CD","optional":false},{"name":"Linux","optional":false},{"name":"Red Teaming","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2026-11-12T21:20:57Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-13T01:58:06Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"The Role\nWe're looking for an Information Security Engineer who can think broadly about how infrastructure is built, attacked, defended, and improved. You may have deep experience in one area-such as endpoint security, Active Directory, Data Loss Prevention, cloud security, identity, or detection and response-but you’re motivated by solving security problems across the environment.\nAs an Information Security Engineer focused on infrastructure security, you'll help protect Palantir's global endpoints, servers, identity systems, applications, networks, and data flows. You'll work across teams to reduce attack surface, improve defensive controls, investigate security events, and turn security findings into durable architectural and operational improvements.\nThis is not just a corporate security role; the adversaries we face are sophisticated. We need someone who understands both the details and the broader system: how a weakness in one part of the environment can create risk somewhere else, how controls interact, and how to build security improvements that hold up in practice.\nCore Responsibilities\nDesign, implement, and improve security controls across endpoints, servers, identity systems, cloud services, SaaS applications, networks, and data flows.\nDrive security posture improvements through hardening standards, configuration management, vulnerability remediation, access controls, monitoring, and ongoing validation.\nAssess security risks in new platforms, products, architectures, vendors, and services, and turn findings into practical recommendations and engineering work.\nBuild and maintain automation for security operations, including configuration validation, drift monitoring, patching, access reviews, policy enforcement, alert triage, and security hygiene.\nPartner with Identity, Infrastructure, Engineering, Legal, and other Information Security teams to strengthen security architecture and address recurring risks.\nTurn insights from assessments, red team exercises, incident investigations, and operational reviews into durable fixes, such as configuration changes, architectural improvements, policy updates, and automation.\nBuild expertise in one or more security domains while contributing across the broader infrastructure security lifecycle.\nWhat We're Looking For\nExperience securing one or more major infrastructure domains, such as Windows, macOS, Linux, Active Directory, cloud platforms, SaaS applications, networking, identity systems, or enterprise endpoints.\nA broad infrastructure security mindset and curiosity about systems beyond your primary area of expertise.\nFamiliarity with common infrastructure attack paths, adversary tactics, techniques, and procedures, and the controls used to prevent, detect, and contain them.\nThe ability to assess complex environments and recognize how weaknesses across identity, endpoints, applications, networks, cloud services, or data flows can combine to create risk.\nExperience evaluating security tools and validating that controls are deployed effectively and continue to work as intended.\nFamiliarity with infrastructure-as-code, configuration management, CI/CD, or other approaches to making security controls repeatable and scalable.\nWhat We Value\nThe ability to own projects, make progress through ambiguity, and balance competing priorities while working well with colleagues.\nExperience in complex, high-assurance, regulated, or rapidly changing environments.\nComfort moving between strategic problem-solving and hands-on technical work.\nStrong written and verbal communication skills, including the ability to explain technical risks and work with partner teams to drive remediation.\nContributions to security programs, tooling, automation, incident investigations, or technical research-whether public or internal.\nWhat We Require\n5+ years of hands-on experience in information security, infrastructure security, security engineering, security operations, or a closely related field.\nDemonstrated experience securing at least one major infrastructure or security domain, with the ability and interest to work across multiple domains.\nActive TS/SCI security clearance, or eligibility and willingness to obtain one.\nA strong sense of ownership, sound judgment, and integrity.","description_format":"text","description_chars":4273,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Integration & ETL Tools","Decision Intelligence","Defense AI"],"lifecycle":[{"event":"open","at":"2026-11-13T01:58:06Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; 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