{"id":2089249,"url":"https://alion.io/job/mercado-libre-semi-senior-full-stack-engineer","title":"Semi Senior Full Stack 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":87,"open_postings":53,"ghost_share":0.019,"stale_share":0.453,"repost_share":0.057,"time_to_fill_p50_days":37,"computed_at":"2026-10-10T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":"middle","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":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Go","optional":false},{"name":"Next.js","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"JavaScript","optional":true},{"name":"Redis","optional":true}],"status":"live","first_seen_at":"2026-10-02T13:02:57Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-10T22:39:38Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Como Semi Senior Full Stack 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.\nImaginá emprendiendo proyectos desafiantes, dinámicos e innovadores y siendo responsable de:\nDiseñar herramientas de autoservicio que reduzcan la dependencia de otros equipos en especialistas técnicos.\nDesarrollar soluciones backend robustas que sostengan productos y automatizaciones financieras.\nConstruir experiencias full stack que integren procesos de negocio con capacidades de inteligencia artificial.\nIdentificar patrones comunes entre distintos equipos para transformarlos en capacidades reutilizables.\nRelevar necesidades de los equipos usuarios y traducirlas en soluciones simples y confiables.\nGarantizar estándares de calidad y pruebas que hagan seguro adoptar cada nueva herramienta entregada.\n¿Qué buscamos en vos?\nTener experiencia en desarrollo backend con Go o lenguajes similares orientados a servicios.\nContar con experiencia trabajando con Python y frameworks modernos de frontend, como React y Next.js junto con TypeScript, es deseable.\nPoseer experiencia construyendo soluciones full stack en entornos de producción.\nHaber trabajado en contextos con múltiples equipos interesados y necesidades cruzadas.\nTener capacidad de relevar requerimientos de manera autónoma.\nTener experiencia con bases de datos relacionales y SQL, incluyendo diseño de modelos, consultas, transacciones y manejo de cambios de esquema.\nAplicar buenas prácticas de calidad y mantenimiento, incluyendo pruebas, control de versiones y seguimiento de servicios en producción.\nSe valorará experiencia con Redis u otras tecnologías de caché y herramientas de CI/CD y observabilidad.\n¿Te animás a dejar huella en la tecnología de América Latina? ¡Postulate y sumate a nuestro propósito! Modalidad de trabajo híbrida. 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