Job Description

z/OS Technical Specialist

Important Information

Location: Singapore



Job mode: Contract

Job Summary:

We are seeking an experienced z/OS Technical Specialist to join our team. The successful candidate will be responsible for designing, implementing, and managing z/OS systems, including installation, configuration, and maintenance of mainframe environments. This role requires strong technical expertise, problem-solving skills, and excellent communication abilities.

Key Responsibilities:

z/OS System Administration:


Install, configure, and maintain z/OS operating systems, including IPLs, software updates, and PTFs.

Manage and troubleshoot z/OS system issues, including performance optimization and problem resolution.


Mainframe Security:


Implement and enforce mainframe security policies, including access controls, authentication, and authorization.

Manage RACF, ACF2, or Top Secret security products.


Performance Management:


Monitor and analyze system performance, identifying and resolving bottlenecks and issues.

Implement performance tuning and optimization techniques.


Automation and Scripting:


Develop and implement automation scripts using languages like REXX, JCL, and others.

Automate routine tasks, such as backup and recovery, system monitoring, and reporting.


Problem Management:


Troubleshoot and resolve complex technical issues, collaborating with IBM and other vendors as needed.

Identify root causes and implement fixes to prevent future occurrences.


Documentation and Knowledge Sharing:


Maintain accurate documentation of z/OS systems, procedures, and best practices.

Share knowledge and expertise with junior staff and other teams.

Required Skills and Experience:

z/OS: 5+ years of experience with z/OS operating system, including installation, configuration, and maintenance. Mainframe: Strong understanding of mainframe architecture, including hardware and software components. Scripting: Proficient in scripting languages like REXX, JCL, and others. Security: Experience with mainframe security products, such as RACF, ACF2, or Top Secret. Problem-Solving: Excellent problem-solving skills, with the ability to analyze and resolve complex technical issues.




Encora is a global company that offers Software and Digital Engineering solutions. Our practices include Cloud Services, Product Engineering & Application Modernization, Data & Analytics, Digital Experience & Design Services, DevSecOps, Cybersecurity, Quality Engineering, AI & LLM Engineering, among others.



At Encora, we hire professionals based solely on their skills and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.