Mainframe Support L2

Capital Empresarial Horizonte, a Mexican company specializing in Human Resources and Information Technologies, requests:

Mainframe Support L2

To work in CDMX

Requirements:

• Mandatory intermediate-advanced conversational English.
• Bachelor's degree or Engineering in Systems, Informatics, Information Technologies, or a related field.
• Minimum 3 to 5 years of verifiable experience in level 2 (L2) technical support on Mainframe platforms (z/OS) and batch/online production environments.
• Solid management of z/OS operating systems, navigation and interaction via TSO/ISPF, and VSAM file management.
• Mandatory mastery of JCL (Job Control Language) for interpretation, script modification, and Abends (execution error) troubleshooting.
• Knowledge and experience in code support/analysis in COBOL, CICS transactional commands, and queries/utilities in DB2 or IMS databases.
• Experience operating monitoring tools and log/spool querying such as SDSF or IOF.
• Management of batch task schedulers/planners such as Control-M, CA-7, IBM TWS/OPC, or ESP.
• Knowledge of debugging, dump analysis, and support tools (debugging/dumps) such as Xpediter, Abend-AID, File-AID, or Fault Analyzer.
• Familiarity with the use of IBM MQ messaging systems and file transfer managers (FTP, NDM/Connect:Direct).
• Understanding of ITIL best practices (Incident, Change, and Problem management) and ITSM tools such as ServiceNow, Remedy, or Jira.
• Availability to participate in on-call shifts or rotation-based support schemes (on-call).
• Excellent analytical skills, problem-solving under pressure, and teamwork.

Responsibilities:

• Monitor, attend to, and resolve Level 2 incidents on the Mainframe platform, ensuring the operational continuity of business processes.
• Analyze and solve failures in Batch Processing execution, correcting JCL error codes and Abends.
• Diagnose incidents in transactional applications under the CICS environment and DB2 database queries/tables.
• Perform review of output files, system messages, and memory dumps using SDSF, Abend-AID, or equivalent tools.
• Restart, adjust, and follow up on the fulfillment of the production schedule through schedulers (Control-M, CA-7, TWS).
• Document support tickets, root causes of recurring incidents, and recovery procedures (Runbooks).
• Timely escalate complex problems or code failures to development teams (L3 Support) or systems engineering.
• Collaborate in deployment activities, contingency testing, and scheduled platform maintenance.

We Offer:

• Office Hours
• 100% payroll scheme
• Statutory Benefits (Prestaciones de Ley)
• Superior Benefits (Family SGMM, SV 1 million, Grocery vouchers, 30 days of aguinaldo, PTU).

-Requirements- Minimum education: Higher education - Bachelor's degree 5 years of experience Languages: English Knowledge: Cobol, Db2, Human resources Keywords: apoyo, support, soporte