{"id":594338,"url":"https://alion.io/job/janestreet-dev-senior-network-engineer","title":"Senior Network 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":170,"ghost_share":0.335,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":147,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":49000,"max_usd":100000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":14},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"Linux","optional":false},{"name":"OSPF","optional":false}],"status":"live","first_seen_at":"2024-03-18T02:42:29Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-30T17:57:01Z","board_verified":true,"closed_at":null,"days_open":956,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":955},"description":"About the Position\nWe are looking for a Senior Network Engineer who can help us scale our networks to meet increasing business demands, drive standardisation through automation and look for opportunities to leverage AI to improve operations.\nJane Street’s numerous distributed systems run on a multi-vendor, highly available network infrastructure and handle a variety of traffic profiles - from high-speed trading to everyday internet connectivity. A typical day on the Network Engineering team includes:\nCollaborating on new data centre and colocation initiatives, WAN routing optimisation and other cross-team design projects\nInterfacing with stakeholders to assess business needs and develop innovative network features/capabilities\nLeading both reactive support tasks and proactive infrastructure improvements, focusing on thorough documentation to reduce outages and enhance troubleshooting\nExploring AI/ML-driven enhancements to streamline operations and continuously improve service quality Using your networking expertise to help us scale our team’s infrastructure at large while maintaining high standards for network performance and reliability\nDocumenting solutions and processes that help the team work more efficiently, using a meticulous attention to detail\nIf you have a passion for innovating within a complex network ecosystem, enjoy building scalable systems and documentation structures and are curious about how AI can refine network operations, this role provides a platform to make a significant impact at Jane Street. We look forward to learning from your expertise and unique perspective.\nAbout You\nHave 7+ years of experience operating and deploying network infrastructure, with 3+ years dedicated to ground-up network design\nHave deep experience with routing and network protocols (OSPF, BGP, PIM-SM) and the troubleshooting of transport protocols (TCP/UDP)\nComfortable operating in Linux environments and proficient in at least one programming language\nStrongly inclined to automate workflows and explore AI/ML approaches to improve efficiency or reduce overhead\nEager to produce comprehensive, scalable documentation that benefits the entire team\nHave a demonstrated ability to balance multiple priorities, switch contexts effectively and maintain a high level of customer service\nExcellent collaborator and communicator; ready to build strong partnerships with diverse global teams and stakeholders to share your recommendations, issues and outcomes \nHave a flexible, reliable mindset and enthusiasm for sharing knowledge with peers\nAny prior exposure to overlay networks (EVPN, VXLAN) is a plus\nFluent in English\nIf you're a recruiting agency and want to partner with us, please reach out to .","description_format":"text","description_chars":2758,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Hedge Funds & Alternative Investments"],"lifecycle":[{"event":"open","at":"2026-09-10T14:59:02Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.207,"p_room":0.28,"age_days":956,"expected_fill_days":147,"reasons":["conf:1","evergreen","ghost","win:tail","crowd:brand"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/janestreet-dev-senior-network-engineer","json_url":"https://alion.io/job/janestreet-dev-senior-network-engineer.json","meta":{"generated_at":"2026-10-30T19:37:23Z","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":9140,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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-senior-network-engineer"},{"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-senior-network-engineer"},{"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-senior-network-engineer"},{"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-senior-network-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fjanestreet-dev-senior-network-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":594338}},{"tool":"search_jobs","arguments":{"company":"janestreet.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":594338},"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); https://alion.io/mcp with an Alion account has everything. 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