{"id":594313,"url":"https://alion.io/job/janestreet-dev-it-security-engineer-2","title":"IT Security Engineer","company":{"id":7349,"name":"Jane Street","domain":"janestreet.com","url":"https://alion.io/company/jane-street","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":169,"ghost_share":0.331,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":147,"computed_at":"2026-10-28T05:59:10Z"}},"role":"Security","role_family":"Security","seniority":null,"employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":98000,"max_usd":223000,"period":"year","method":"role_country_seniority_unknown","sample_n":3638},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"PKI","optional":false},{"name":"PowerShell","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2025-09-05T21:07:15Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-28T05:13:40Z","board_verified":true,"closed_at":null,"days_open":417,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":417},"description":"About the Position\nWe are looking for an IT Security Engineer with a strong Windows engineering background and practical exposure to modern platform security controls to join a global team dedicated to securing Jane Street’s IT platforms. In this role, you will help secure our internal IT and remote working platforms through a combination of hands-on technical work, consultancy, and security influence to the wider IT team.\nThe ideal candidate will demonstrate strong judgment and discerning taste in prioritizing potentially complex and extensive remediation efforts. We’ll lean on you to suggest where to focus our mitigation efforts, and to provide both technical advice and decision making on behalf of the group where needed. This role will encompass a range of responsibilities, including:\nProactively proposing, designing, testing, implementing, and documenting strategic security controls\nCoordinating and delivering security solutions across our IT platforms while identifying opportunities to further automate intelligent workflows\nBuilding security controls that scale, investigating emerging threats, developing new security tooling, and driving vulnerability management initiatives \nThis position sits within our IT Engineering group, a highly dedicated team of engineers who monitor and manage our environment across a physical/virtual computing landscape spanning three continents. Your analytical thinking and expertise will be invaluable as we support the daily work of our colleagues and keep our systems operating at the highest standard.\nAbout You\nProficient in securing Windows OS platforms and resolving complex technical issues in a fast-moving environment\nHave hands-on experience utilizing integrated security technologies for safeguarding Windows operating systems, including application control, host-based firewalls, auditing and event monitoring, and disk encryption\nSkilled in the administration of endpoint security and vulnerability management solutions, including antivirus, anti-malware, EDR, vulnerability scanning, and patch management\nKnowledgeable about security best practices, including operating system hardening, privileged access management, and vulnerability mitigation \nHave an understanding of common threat tactics, techniques, and procedures (TTPs), and effective countermeasures\nWell-versed in Windows core infrastructure services (AD/EntraID, PKI)\nEager to produce scalable and repeatable security practices through automation \nHave an understanding of security tooling and APIs \nTake a flexible, reliable, and highly collaborative approach to your work\nAn ability to script in PowerShell or other languages is strongly desired\nIf you're a recruiting agency and want to partner with us, please reach out to .","description_format":"text","description_chars":2795,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Hedge Funds & Alternative Investments"],"lifecycle":[{"event":"open","at":"2026-09-10T14:59:02Z"}],"visa":[],"liveness":{"score":13,"band":"cold","label":"Long shot","p_open":1,"p_active":0.458,"p_room":0.28,"age_days":417,"expected_fill_days":147,"reasons":["conf:0","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/janestreet-dev-it-security-engineer-2","json_url":"https://alion.io/job/janestreet-dev-it-security-engineer-2.json","meta":{"generated_at":"2026-10-28T09:31:29Z","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":12474,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"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":7349},"rest":"https://alion.io/mcp/rest/get_company?id=7349"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fjanestreet-dev-it-security-engineer-2"},{"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%2Fjanestreet-dev-it-security-engineer-2"},{"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%2Fjanestreet-dev-it-security-engineer-2"},{"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/janestreet-dev-it-security-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fjanestreet-dev-it-security-engineer-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":594313}},{"tool":"search_jobs","arguments":{"company":"janestreet.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":594313},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); 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