Computer Operator (Mainframe)
こんぴゅーたおぺれーたー（はんようき）
Industry & Occupation
Classification
Summary
Operations role involving operation and monitoring of mainframes (general-purpose computers), batch job management, troubleshooting, etc.
Description
Computer Operators (Mainframe) handle job management and batch processing execution on mainframe servers, operations and monitoring from consoles, management of input/output devices, initial response to errors, etc. They use knowledge of JCL (Job Control Language), z/OS, MVS, and other OS to support stable operation of 24/7 systems. Shift work and night shifts are common, requiring accurate work following standard procedures and quick response capabilities during incidents.
Future Outlook
While there will be steady demand for maintaining legacy systems, advances in operations automation and cloud migration will require job roles to become more advanced and transformed.
Personality Traits
Attentive / Strong sense of responsibility / Values discipline
Work Style
Career Path
Junior Operator → System Operator → Shift Leader → Operations Manager → Infrastructure Engineer
Required Skills
Batch management / Console operation / JCL operation / Mainframe OS operation
Recommended Skills
English document reading / Mainframe language knowledge / Script automation / System monitoring
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Attention to Detail & Accuracy | Because even a slight mistake in JCL or procedures can lead to large-scale failures. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | Because accurate routine tasks are valued more than creative thinking. |
| Initiative & Leadership | Because work is basically performed following prescribed procedures. |
| Numerical & Quantitative Analysis | Because advanced mathematical analysis is not much required. |
| Physical Stamina & Endurance | Because the work is mainly at the console and involves little heavy labor. |
Related Qualifications
- Fundamental Information Technology Engineer Examination
Aliases
- Mainframe Operator
Related Jobs
- Data Center Operator
- Network Operator
- Server Administrator