Job Description: We are Ecosistemas, a global technology company that connects our clients with customized, comprehensive, and innovative solutions. We operate in more than 15 countries, including Argentina, Chile, Brazil, Mexico, the United States, and Spain. **We want you to be part of this great team!** **What are we looking for?** **Hybrid model** (if you reside in CABA, it is ideal to attend the office once a week) \| **Working hours:** 9 AM to 6 PM. At **Ecosistemas**, we are seeking a **Full Stack Developer** to join our team and participate in the **modernization of critical business applications**, driving **digital transformation** projects across the region. #### **Responsibilities** * Develop and maintain web applications using **React.js, Node.js, and JavaScript/TypeScript**. * Design and implement **RESTful APIs and microservices**. * Optimize application performance (queries, caching, frontend rendering). * Implement multilingual interfaces (Spanish, Portuguese, English). * Integrate enterprise systems (PeopleSoft, Ariba, and external services). * Provide production support (levels 2/3\), incident analysis, and resolution. * Migrate legacy authentication systems to modern solutions (**Ping Identity, Entra ID**). * Apply **OWASP security practices** and secure coding standards. * Modernize batch processes toward **event-driven architectures**. * Document technical developments and procedures. #### **Requirements** * #### **+4 years of Full Stack development experience**. * Proficiency in **React.js, Node.js, JavaScript/TypeScript**. * Experience with **Java and Spring** for backend development. * Solid knowledge of **SQL** and relational databases. * Experience with **microservices, RESTful APIs, and CI/CD**. * Familiarity with **Azure, Docker, Kubernetes, and Git**. * Advanced **Spanish** and professional **English** proficiency. #### **We value** * Experience with **Redis, OAuth 2\.0, SAML, App Insights, Splunk, Angular, Vue.js, RabbitMQ, Terraform**, and Azure services. At Ecosistemas, we believe diversity enriches our culture and perspectives, so we actively foster an inclusive environment where every individual, regardless of origin, gender, orientation, abilities, or beliefs, is not only welcome but essential to our success. We value and respect all voices, and we invite you to join our team, where inclusion is a fundamental pillar of our values.