Mainframe Infrastructure Engineer / IBM Z Series Specialist (Remote - SE Asia)

Role Overview: We are seeking an experienced IBM Z Series Mainframe Engineer based in Vietnam to join our clients’ mainframe dev team. In this role, you will be responsible for supporting, maintaining, and modernizing the core IBM Z platform environments. The ideal candidate has deep technical expertise in z/OS environments and a proven track record of working within highly regulated industries such as banking, finance, or telecommunications. Key

Responsibilities:

System Maintenance: Monitor, configure, and maintain IBM Z mainframe environments (z/OS, z/VM) to ensure 24/7 high availability and performance.

Storage & Database Admin: Manage mainframe storage architectures, datasets, and catalog structures, including DB2 for z/OS or IMS.

Security & Compliance: Administer mainframe security policies using RACF, ACF2, or Top Secret, ensuring alignment with global compliance standards (e.g., PCI-DSS).

Performance Tuning: Troubleshoot system bottlenecks, manage workload configurations (WLM), and optimize batch processing and JCL execution.

Modernization Support: Assist in integrating legacy systems with modern hybrid cloud environments using z/OS Connect Enterprise Edition or IBM Developer for z/OS (IDz).Required Skills &

Qualifications:.

Experience: 5+ years of hands-on experience dealing directly with IBM Z Series hardware (z14, z15, or z16) and z/OS operating systems. Core Technical Stack: Strong proficiency in JCL, TSO/ISPF, CICS, and IBM MQ. Programming - Languages: Familiarity with COBOL, PL/I, or Assembler (highly preferred for application-focused roles).

Industry Background: Prior experience working with major regional or global financial institutions, shared services, or tier-1 IT integrators.

Communication: Excellent written and verbal English communication skills, with the ability to collaborate effectively with distributed global teams.

Remote working within Southeast Asia.

Salary is negotiable based on your experience, skills, and expectations.