{"id":1291151,"url":"https://alion.io/job/tiktok-software-engineer-recommendation-infrastructure-seattle","title":"Software Engineer, Recommendation Infrastructure (Seattle)","company":{"id":47,"name":"TikTok","domain":"tiktok.com","url":"https://alion.io/company/tiktok","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Feishu","truth_index":{"grade":"B","score":83,"open_postings":3416,"ghost_share":0.203,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":95,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Seattle, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":174000,"max_usd":344000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1246},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Go","optional":false},{"name":"HPC","optional":false},{"name":"Java","optional":false},{"name":"Machine Learning","optional":false},{"name":"Recommender Systems","optional":false}],"status":"live","first_seen_at":"2024-01-30T01:26:19Z","employer_posted_date":"2026-09-26","last_verified_at":"2026-10-14T06:03:58Z","board_verified":true,"closed_at":null,"days_open":988,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":988},"description":"岗位职责 / Responsibilities\nAbout The Team:\nOur Recommendation Architecture Team is responsible for building up and optimizing the architecture for our recommendation system to provide the most stable and best experience for our TikTok users.\nResponsibilities - What You'll Do\n- Build and maintain high performance online services for TikTok recommendation system; 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