Job Summary: We are seeking a Middle Backend Developer with experience in Java Web EE, DBMS, and design patterns for the analysis, design, and optimization of backend architectures. Key Highlights: 1. Backend architecture design and optimization. 2. Implementation of security measures and service development. 3. Participation in code reviews and best practices. Erillam HC belongs to a group of Mexican companies with various business units across the Mexican Republic. We are currently looking for our next: **Middle Backend Developer.** Education: Bachelor’s degree / Engineer in Information Technology, Sciences, or related field. Minimum 2 years of experience in: * Java Web EE application development. * Familiarity with application servers (e.g., WildFly / JBoss). * DBMS management (PostgreSQL, MS Server, Oracle). * Design patterns. * Database modeling (SQL). * Backend development frameworks. * Git. * Docker. Main Responsibilities: * Analysis and validation of functional requirements. * Design, development, and optimization of application backend architectures. * Design and optimization of data models (databases). * Implementation of security measures to protect data and services (authentication, encryption, authorization). * Development and integration of services with external APIs and cloud services. * Participation in code reviews and ensuring adherence to software development best practices. * Management of application and database migrations and performance optimization. WE OFFER: * Monthly salary: $18,750 net. * Statutory benefits (IMSS, Christmas bonus, vacation, vacation premium, PTU, uniforms). Our office is located at Altamirano #4, Acapatzingo village, 62440 Cuernavaca, Mor. 100% on-site * Working hours: Monday–Friday, 9:00 AM–6:00 PM; Saturdays, 9:00 AM–2:00 PM. Employment type: Full-time Salary: $18,750.00 per month Work location: On-site employment