Job Summary: The Backend Developer will be responsible for the design, development, and maintenance of server-side components for scalable, secure, and high-performance solutions. Key Highlights: 1. REST API design, development, and maintenance. 2. Business logic implementation following architectural best practices. 3. Participation in technical design and optimization of critical services. **Purpose of the Position** The Backend Developer will be responsible for designing, developing, and maintaining the server-side components supporting B2Chat solutions. Their primary objective will be to implement scalable, secure, and high-performance business logic, facilitating communication among internal services, external APIs, and frontend applications. In the short term, they must integrate into the development team and contribute to the implementation and maintenance of existing APIs and services. In the medium term, they must participate in the design of new architectures and optimization of critical services. In the long term, they will contribute to platform evolution, ensuring scalability, availability, and security of systems. **Responsibilities of the Role** Analyze system requirements and understand business needs to develop efficient backend solutions. Design, develop, and maintain REST APIs used by internal and external applications. Implement business logic in backend services following architectural best practices and design patterns. Identify and resolve errors or issues in backend services. Optimize application performance and database queries. Participate in the technical design of new features or system improvements. Use AI tools to enhance productivity and quality of deliverables. Workplace: Hybrid in Medellín, Antioquia (Medellín)