{"id":2692876,"url":"https://alion.io/job/sedaro-senior-software-engineer-back-end","title":"Senior Software Engineer, Back End","company":{"id":4390314,"name":"Sedaro","domain":"sedaro.com","url":"https://alion.io/company/sedaro","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":{"grade":"C","score":68,"open_postings":13,"ghost_share":0.538,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","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":["Arlington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":128000,"max_usd":235000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3287},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Django","optional":true},{"name":"Kubernetes","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Python","optional":true},{"name":"Rust","optional":true}],"status":"live","first_seen_at":"2026-02-04T00:00:00Z","employer_posted_date":"2026-02-04","last_verified_at":"2026-10-17T14:45:59Z","board_verified":true,"closed_at":null,"days_open":255,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":255},"description":"Overview\nSedarois hiring a Senior Software Engineer to architect our workflow orchestration system. Proliferating satellite constellations require optimization studies involving unprecedented scale and complexity. You will build the execution engine that enables aerospace teams to run massive simulation campaigns-exploring vast design spaces with the flexibility to handle evolving mission requirements.\nTeam: Platform Services, reporting to the team lead\nLocation:In person in Arlington, VAor Boston, MA\nU.S.Citizen or permanent resident status required\nWho We Are\nOur cloud-native simulation platform enables digital mission engineering through distributed, scalable, faster than real-time analyses across hundreds of interacting systems. Our system is built on Rust, Python, Kubernetes, Django, and Postgres to drive performance across clouds. Join us as an early employee and transform how teams collaboratively engineer next-generation Aerospace & Defense systems.\nWho You Are\nYou love solving distributed systems problems-workload orchestration, data throughput, performance optimization\nYou thrill in building power tools that multiply what engineers can accomplish\nYou'recomfortable with ambiguity and prefer rapid iteration over lengthy planning\nYou’reexcited to work at the intersection of software and physical systems alongside aerospace, embedded, and platform engineers\nWhat You’llDo\nArchitect Lean solutions with impactful incremental deliverables\nOptimizemulti-cloud systems for performance, reliability, and cost efficiency\nDesign and implement system observability with actionable alerting and measurable SLOs\nDrive operational excellence through infrastructure as code, CI/CD, and observability practices\nLead root cause analysisand blameless post-mortem discussions\nFoster a culture of learning, empowerment, and achievement\nBenefits\nEquity\nUnlimited PTO\n401(k) with 4% match\n100% premium payment for Medical Insurance\nParental Leave\nFlexible work schedule with core hours\nCompany provided lunches 3days a week\nIndustry-leading career development opportunities\nRequirements\nBachelor’s degree in computer scienceor equivalent experience\n6+ years of professional experience in software engineering\nExperience with containerization, container orchestration, and event streams\nExperience with relational and key-value databases\nExperience designing and implementing APIs\nExperience driving performance through observabilityand/or root cause analysis\nProficiencyin at least one server-side programming language","description_format":"text","description_chars":2527,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Flexible schedule","Health insurance","Parental leave","Unlimited PTO"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-16T09:31:18Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.194,"p_room":0.28,"age_days":255,"expected_fill_days":37,"reasons":["conf:4","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/sedaro-senior-software-engineer-back-end","json_url":"https://alion.io/job/sedaro-senior-software-engineer-back-end.json","meta":{"generated_at":"2026-10-17T17:32:29Z","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":24101,"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":4390314},"rest":"https://alion.io/mcp/rest/get_company?id=4390314"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsedaro-senior-software-engineer-back-end"},{"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%2Fsedaro-senior-software-engineer-back-end"},{"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%2Fsedaro-senior-software-engineer-back-end"},{"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/sedaro-senior-software-engineer-back-end\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsedaro-senior-software-engineer-back-end"}]}