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Closed on August 16, 2026.
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Senior Mainframe Developer
Senior
CICS
COBOL
Data Processing
Database
Databases
Engineer
Engineering
Ibm Db2
Information Technology (IT)
Legacy Systems
Mainframe
Senior Developer
Software Development
Software Engineer
Software Engineering
SQL
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Job Description
Remote Senior Mainframe Developer role at Global KTech focused on leading design, development, and deployment of complex mainframe solutions using COBOL, CICS, DB2, and batch processing on IBM z/OS.
Responsibilities
- Provide technical governance by defining and enforcing coding standards
- Lead thorough code reviews to ensure quality and consistency
- Maintain comprehensive documentation for legacy architectures
- Develop and deploy complex, secure batch and online programs using enterprise COBOL on IBM zOS
- Architect and optimize online CICS applications for ultra low latency, efficient screen layouts, high throughput, and robust error handling
- Design relational DB2 schemas, implement high performance embedded SQL, and tune stored procedures, indexes, and queries to remove bottlenecks
- Manage and optimize JCL streams, including utilities such as IEBGENER, IDCAMS, and SORT, with automated batch scheduling
- Perform advanced root cause analysis, tracing, and performance tuning to maintain high availability using tools like Dump Analysis, Xpediter, InterTest, or File AID
- Collaborate with Cloud and Integration Architects to expose core mainframe data and logic to RESTful APIs via zOS Connect or MQ Series
Requirements
- Minimum 8 years of professional IBM Mainframe software engineering experience
- Proven track record in high volume transactional environments in Financial Services, Healthcare, Logistics, or Insurance
- Proficiency in Enterprise COBOL
- Experience with JCL
- Strong Embedded SQL skills
- Assembler knowledge
- EZTrieve is a plus
- Online Processing CICS
- BMS
- Maps
- TS TD Queues
- Program Control
- Intercommunication
- Data Management
- DB2 relational design
- SPUFI
- DCLGEN
- EXPLAIN plan analysis
- VSAM
- zOS
- TSO
- ISPF
- Endevor
- Changeman
- Version Control
- Debugging
- COBOL: 10 years required
- CICS: 10 years required
- JCL: 10 years required
Technologies
- Enterprise COBOL
- JCL
- Embedded SQL
- Assembler
- EZTrieve
- Online Processing CICS
- BMS
- Maps
- TS TD Queues
- Program Control
- Intercommunication
- DB2
- SPUFI
- DCLGEN
- EXPLAIN plan analysis
- VSAM
- zOS
- TSO
- ISPF
- Endevor
- Changeman
- Version Control
- Debugging
Engagement details
- Location: Remote
- Compensation: USD 55 - 60 per hourly
- Minimum overall professional experience: 8+ years
- COBOL, CICS and JCL require 10 years of experience each
- Visa: Any
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