Capital Empresarial Horizonte, a Mexican company specializing in Human Resources and Information Technologies, is seeking: Mainframe Developer **Conversational English required** **On-site work in CDMX or Guadalajara — 100 % in-person** We are looking for a **Mainframe Developer** with experience in developing and maintaining applications in **mainframe** environments. The selected candidate will be responsible for ensuring the stability and evolution of the company’s critical systems, working with legacy technologies and participating in modernization and process optimization projects. **Requirements:** * Solid experience in **Mainframe** (COBOL, JCL, CICS, DB2). * Knowledge of **enterprise application development and maintenance**. * Experience with **DB2 databases and data manipulation in mainframe environments**. * Ability to efficiently diagnose and resolve technical issues. * Familiarity with version control tools and agile methodologies. **We offer:** * Office hours * 100 % payroll scheme * Salary open to negotiation based on experience * Statutory benefits * Enhanced benefits (family SGMM, SV 1 million, grocery vouchers, 30-day bonus, PTU)