ids Comercial is a 100% Mexican company dedicated to IT with 40 years of experience and presence in Mexico, Latin America, and the USA. Over 1,500 consultants work on numerous projects across the financial, commercial, manufacturing, telecommunications, services, government, and other sectors. We are accredited at CMMI Level 5 (Capability Maturity Model Integration), a quality model established by the Software Engineering Institute (SEI). Certified by ISO under ISO/IEC27001:2013. We hold the distinction of being a Socially Responsible Company (ESR). WE ARE LOOKING FOR YOU! **Senior Java Backend Developer** Main responsibilities: Development and maintenance of backend services and microservices in Java. Design and integration of RESTful APIs with databases and external systems. Implementation of testing and best programming practices. Collaboration on scalable architectures within agile environments. Requirements: +4 years of experience developing backend systems. Java: Advanced proficiency (JDK 11+, lambdas, streams, concurrency). * Frameworks: Spring Boot, Spring Security, Hibernate/JPA. * APIs: RESTful API design and knowledge of GraphQL. * Databases: SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis, Cassandra). * Events/Messaging: Kafka, RabbitMQ, or AWS SQS. * Version Control: Git (GitHub/GitLab). * Infrastructure: Experience working with cloud infrastructure (AWS/Azure/GCP). Certifications in Java (Oracle Certified Professional) or cloud platforms (AWS/Azure). * Experience with serverless architectures (AWS Lambda). * Knowledge of observability tools (Dynatrace, Prometheus, Grafana). * Familiarity with resilience patterns (Circuit Breaker, Retry). **Work Modality:** Hybrid. **Location:** Cuauhtémoc, CDMX. We offer: Monthly base salary (100% payroll scheme) Statutory benefits Attendance bonus (10% of monthly base salary) 5% housing fund (% of Payroll) 2% retirement fund (% of Payroll) Major Medical Expense Insurance Minor Medical Expense Insurance Accident Life Insurance Savings Fund (Optional) Fleet Vehicle Insurance (Optional) Commercial Agreements We are an inclusive company free from any kind of discrimination, where opportunities are available to anyone demonstrating attitude and talent. We do not require medical certificates for pregnancy or Human Immunodeficiency Virus (HIV) as conditions for joining our great work family and accessing equal growth opportunities.