Job Summary: We are seeking an experienced developer to audit, optimize, and develop transactional systems, refactor complex business logic, and ensure operational continuity. Key Highlights: 1. Professional growth opportunities in a collaborative environment. 2. Development of new modules using modern and scalable technologies. 3. Maintenance of legacy systems and development of modern software. **We are a recognized technology-sector company dedicated to the sale and distribution of technology products. We value innovation and commitment to excellence in customer service, providing a collaborative work environment and professional growth opportunities.** **Key Responsibilities:** \-Deeply engage to audit and stabilize a robust transactional system developed using established technologies (VB . NET, PHP, MySQL), in collaboration with the rest of the team. \-Optimize and refactor complex business logic currently residing in the database (advanced Stored Procedures). \-Ensure operational continuity while preparing for the system’s next functional stages. \-Develop high-performance new modules using modern, scalable, and stable technologies. \-Implement improvements and handle large volumes of data. **Required Knowledge:** \-Backend: Python and others. \-Frontend: React / Next . js / Similar. \-Data: MySQL 8\.0, PostgreSQL, MongoDB. \-Search \& Cache: Redis, Elasticsearch, similar. \-Infrastructure: Docker, Linux. **Requirements:** \-Proven experience maintaining legacy systems (VB . NET/PHP) as well as developing modern software. \-Ability to read, understand, and refactor complex stored procedures spanning thousands of lines—not merely writing queries, but comprehending the business logic embedded within the database. \-Backend experience: Minimum 4\+ years of solid development experience. \-Data Engineering: Knowledge of MySQL and PostgreSQL databases. \-Completed bachelor’s degree. \-Residency near the area. **Work Location:** Guadalupe, on-site; Monday to Friday, 8 AM to 6 PM; only one Saturday per quarter is required for inventory purposes. **Salary:** $30,000 gross\+ $3,000 bonus Statutory benefits plus additional ones including optional savings fund, life insurance, and discounts on our products. Salary: $30,000\.00 per month Benefits: * Savings fund * Discounts and preferential pricing * Life insurance Application Question(s): * How many years of experience do you have with MySQL? * What is your salary expectation? Work Location: On-site employment