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Salary
≈ $57k – $116k per year (Estimated)
Location
In office (Buenos Aires)
Seniority
Senior

Confirmed on the employer's own hiring board on Sep 26, 2026. First seen by Alion on Sep 3, 2026. Mercado Libre scores A on the Alion truth index.

Overview
Company
Impact
Profile match
MercadoLibre is a leading Latin American e-commerce and financial technology company founded in 1999. The organization operates a massive online marketplace connecting buyers and sellers across 18 countries, including major markets like Brazil, Mexico, and Argentina. Additionally, its digital payments platform, Mercado Pago, has expanded into a comprehensive fintech ecosystem offering digital wallets, payment processing, and credit services throughout the region.

Como Senior Fullstack Frontend Developer 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.

Imagináte emprendiendo proyectos desafiantes, dinámicos e innovadores y siendo responsable de:

  • Diseñar y desarrollar interfaces web escalables, intuitivas y robustas, con foco en Developer Experience, performance, usabilidad y mantenibilidad.

  • Construir soluciones frontend y fullstack que integren GenAI, LLMs, agentes y MCPs, facilitando su adopción mediante experiencias simples, modulares y reutilizables.

  • Desarrollar soluciones end-to-end integrando APIs, microservicios y componentes backend, trabajando junto a equipos de producto, datos, backend y machine learning.

  • Impulsar buenas prácticas de ingeniería como componentización, testing automatizado, code review, diseño limpio, documentación y estándares de desarrollo.

  • Instrumentar métricas de adopción, productividad e impacto, incorporando nuevas tecnologías y tendencias que permitan evolucionar continuamente las soluciones.

¿Qué buscamos en vos?

  • Tener experiencia sólida en desarrollo frontend con React, TypeScript, JavaScript, HTML y CSS para construir aplicaciones escalables, performantes y mantenibles.

  • Contar con conocimientos de arquitectura frontend, componentización, manejo de estado, testing y buenas prácticas de diseño de interfaces.

  • Poseer experiencia integrando APIs RESTful, servicios backend y microservicios, junto con conocimientos fullstack en Python, Node.js o tecnologías similares.

  • Manejar prácticas y herramientas de ingeniería como Git, CI/CD, testing unitario, mocking, code review y buenas prácticas de delivery.

  • Demostrar conocimientos o fuerte interés en GenAI y LLMs, mentalidad de producto, foco en Developer Experience, capacidad de trabajo en equipos interdisciplinarios e inglés técnico.

¿Te animás a dejar huella en la tecnología de América Latina? ¡Postulate y sumate a nuestro propósito!

Modalidad de trabajo híbrida. Site Híbrido: Buenos Aires, Argentina

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