{"id":2550041,"url":"https://alion.io/job/mercado-libre-software-engineer-back-end","title":"Software Engineer Back End","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":"B","score":84,"open_postings":55,"ghost_share":0.018,"stale_share":0.582,"repost_share":0.055,"time_to_fill_p50_days":37,"computed_at":"2026-10-15T05:46:00Z"}},"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":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Go","optional":false},{"name":"Java","optional":false}],"status":"live","first_seen_at":"2026-10-05T17:05:05Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T12:54:58Z","board_verified":true,"closed_at":null,"days_open":9,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":9},"description":"Como Software Engineer en Mercado Libre, diseñarás y escalarás servicios e infraestructura que permiten construir experiencias personalizadas para millones de usuarios en América Latina. Trabajarás en desafíos de gran escala, desarrollando sistemas de baja latencia capaces de seleccionar y ordenar grandes volúmenes de ítems en función de los intereses de cada usuario.\nImagínate emprendiendo proyectos desafiantes, dinámicos e innovadores y siendo responsable de:\nDiseñar, desarrollar y evolucionar servicios backend para la personalización de containers y cupones, con foco en performance, disponibilidad, resiliencia y eficiencia.\n\nConstruir soluciones capaces de personalizar grandes volúmenes de ítems y responder con baja latencia, incluso frente a los picos de tráfico generados por los principales eventos de Mercado Libre.\n\nResolver desafíos de concurrencia, latencia, escalabilidad, consistencia y costo propios de sistemas distribuidos que operan en múltiples sites.\n\nDiseñar y evolucionar arquitecturas que integran servicios síncronos y asíncronos, streams, KVS y mecanismos de caching.\n\nParticipar en el diseño de estrategias para almacenar, recuperar y procesar eficientemente la información necesaria para personalizar las distintas experiencias.\n\nEvaluar alternativas y trade-offs de arquitectura, tomando decisiones que permitan construir soluciones simples, escalables y mantenibles.\n\n¿Qué buscamos en vos?\nTener experiencia sólida en desarrollo backend y en la operación de sistemas distribuidos de alta escala en producción.\n\nContar con experiencia desarrollando servicios en Go, o alternativamente en Java. Valoramos especialmente experiencia trabajando con ambos lenguajes.\n\nContar con experiencia diseñando y escalando servicios con requerimientos exigentes de latencia, disponibilidad y volumen de tráfico.\n\nPoseer fundamentos sólidos de ingeniería de software, incluyendo diseño modular, testing, observabilidad, performance, resiliencia y mantenibilidad.\n\nTener experiencia trabajando con arquitecturas distribuidas que utilicen streams, almacenamiento key-value y estrategias de caching.\n\n¿Te animás a dejar huella en la tecnología de América Latina? ¡Postulate y sumate a nuestro propósito!\nModalidad de trabajo híbrida. 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