{"id":2145556,"url":"https://alion.io/job/whatnot-software-engineer-ads","title":"Software Engineer, Ads","company":{"id":5086,"name":"Whatnot","domain":"whatnot.com","url":"https://alion.io/company/whatnot","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":{"grade":"C","score":69,"open_postings":95,"ghost_share":0.516,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-10T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Kraków, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":51000,"max_usd":102000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":29},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-06-10T00:01:57Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-11T04:43:44Z","board_verified":true,"closed_at":null,"days_open":123,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":122},"description":"Join Whatnot, the largest live shopping platform in North America and Europe. As a Software Engineer on the Ads team, you'll build systems and features to help sellers grow their businesses. You'll work across the full ads stack, build highly scalable ads systems, and understand buyer and seller experiences. Ideal candidates have 4+ years of professional software engineering experience, strong experience designing and building scalable backend services, and a product-minded approach to engineering.\nMissions\nConstruire des produits publicitaires en travaillant sur l'ensemble de la pile publicitaire, y compris les enchères, le ciblage, le classement, le service, la gestion des campagnes et les outils pour les vendeurs.\nDévelopper des systèmes publicitaires hautement évolutifs qui gèrent tous les aspects de l'exécution d'un système de publicité en ligne et aident les vendeurs à se différencier sur Whatnot.\nAnalyser en profondeur les données, les journaux et le comportement du système pour raisonner sur les performances, la correction et l'impact.","description_format":"text","description_chars":1059,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"French","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce","Marketplaces","Social Commerce"],"lifecycle":[{"event":"open","at":"2026-10-09T04:17:57Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.3,"p_room":0.28,"age_days":122,"expected_fill_days":27,"reasons":["conf:2","stale_co","velocity","ghost","win:tail","crowd:"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/whatnot-software-engineer-ads","json_url":"https://alion.io/job/whatnot-software-engineer-ads.json","meta":{"generated_at":"2026-10-11T04:48:57Z","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","counted_by":"address","units_charged":1,"used_today":3891,"day_limit":5000,"remaining_today":1109,"minute_limit":60,"resets_at":"2026-10-12T00:00:00Z"}},"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":5086},"rest":"https://alion.io/mcp/rest/get_company?id=5086"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwhatnot-software-engineer-ads"},{"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%2Fwhatnot-software-engineer-ads"},{"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%2Fwhatnot-software-engineer-ads"},{"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/whatnot-software-engineer-ads\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwhatnot-software-engineer-ads"}]}