{"id":71372,"url":"https://alion.io/job/polars-software-engineer-performance","title":"Software Engineer - Performance","company":{"id":33508,"name":"Polars","domain":"pola.rs","url":"https://alion.io/company/polars","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Amsterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":104000,"period":"year","method":"role_country_seniority_unknown","sample_n":175},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"GitHub","optional":false},{"name":"Polars","optional":false},{"name":"Rust","optional":false}],"status":"live","first_seen_at":"2025-07-18T06:54:34Z","employer_posted_date":"2025-07-18","last_verified_at":"2026-10-17T04:05:02Z","board_verified":true,"closed_at":null,"days_open":455,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":455},"description":"Polars\nPolars is the next generation of DataFrames. 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