{"id":963803,"url":"https://alion.io/job/mercado-libre-senior-software-engineer-4","title":"Senior Software Engineer","company":{"id":237,"name":"Mercado Libre","domain":"mercadolibre.com","url":"https://alion.io/company/mercado-libre","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Eightfold","truth_index":{"grade":"A","score":88,"open_postings":59,"ghost_share":0,"stale_share":0.492,"repost_share":0,"time_to_fill_p50_days":35,"computed_at":"2026-09-28T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":120000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":4821},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"LLM","optional":false},{"name":"MySQL","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-09-14T17:32:43Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-09-28T21:51:13Z","board_verified":true,"closed_at":null,"days_open":14,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":14},"description":"Como Senior Software Engineer en Mercado Libre, diseñarás y escalarás sistemas innovadores y seguros que resuelven problemas reales y de alto impacto. Trabajarás en un entorno dinámico con tecnología de vanguardia, aplicando buenas prácticas de ingeniería, modelos de IA propios y aprendizaje continuo, con el propósito de democratizar el comercio electrónico y los servicios financieros en América Latina.\nImagináte emprendiendo proyectos desafiantes, dinámicos e innovadores y siendo responsable de:\nConstruir y mantener el pipeline de evaluación continua recolectando conversaciones de producción para evaluarlas de forma programada contra rúbricas configurables.\n\nEvolucionar la plataforma de evaluación continua permitiendo auditar agentes y sus assets en ciclo de vida completo.\n\nIntegrar la plataforma en el proceso de mejora continua retroalimentando la selección de modelos y ajuste de prompts.\n\nDiseñar estrategias de evaluación y rúbricas para agentes conversacionales complejos en entornos de alta disponibilidad.\n\nColaborar con equipos de productos para traducir casos de uso en criterios de evaluación medibles.\n\n¿Qué buscamos en vos?\nPoseer conocimientos sólidos en lenguajes como Python o Go y en diseño de APIs RESTful.\n\nContar con familiaridad en arquitecturas de microservicios, sistemas distribuidos y procesamiento asíncrono.\n\nTener conocimientos de bases de datos relacionales como MySQL.\n\nDemostrar familiaridad con LLMs, sus APIs y frameworks de evaluación como LLM-as-judge.\n\nDemostrar curiosidad y autonomía para investigar, resolver problemas y trabajar en equipo.\n\n¿Te animás a dejar huella en la tecnología de América Latina? ¡Postulate y sumate a nuestro propósito!\nModalidad de trabajo híbrida. Site Saavedra- CABA.","description_format":"text","description_chars":1746,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"Spanish","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Argentina","iso":"AR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Marketplaces","Payment Processing & Gateways","Consumer Loans & Pawnshops"],"lifecycle":[{"event":"open","at":"2026-09-16T12:40:22Z"}],"liveness":{"score":83,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.917,"p_room":0.9,"age_days":13,"expected_fill_days":35,"reasons":["conf:4","wave","velocity","win:mid","comp:brand"],"computed_at":"2026-09-28T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/mercado-libre-senior-software-engineer-4","json_url":"https://alion.io/job/mercado-libre-senior-software-engineer-4.json","meta":{"generated_at":"2026-09-29T01:43:57Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1384,"day_limit":5000,"remaining_today":3616,"minute_limit":60,"resets_at":"2026-09-30T00:00:00Z"}}}