Mainframe Application Developer – COBOL / PL/I

Computer Task Group, Inc•UNAVAILABLE, UNAVAILABLE

10d•Remote

About The Position

CTG is seeking to fill a Mainframe Application Developer – COBOL / PL/I position for our client. This is a remote, 12-month contract role. The developer will be responsible for designing, developing, enhancing, testing, and maintaining mainframe applications using COBOL, PL/I, and CA Easytrieve. The role involves working with various mainframe technologies such as IMS DB/DC, DB2, VSAM, and CICS, as well as JCL for batch processing. Responsibilities include managing production jobs, source-code management, and debugging production issues. The position also supports mainframe-to-distributed system integrations, DB2 database management, and system modernization initiatives. Collaboration with team members, technical documentation, and application performance optimization are key aspects of this role. The developer will also support testing for infrastructure migrations and disaster recovery, and work within production support and change management processes. Experience with oil and gas commercial applications is highly desirable.

Requirements

Strong proficiency with PL/I, COBOL, and CA Easytrieve.
Hands-on experience with IMS DB/DC, DB2, VSAM, and CICS application development.
Advanced JCL development and complex batch-processing experience.
Experience with CA Jobtrac scheduling and production job monitoring.
Experience with Endevor source-code and release management.
Strong working knowledge of z/OS, MVS, JES, ISPF, and SDSF.
Production debugging experience with File-AID, Abend-AID, and Xpediter.
Strong understanding of abend resolution, root-cause analysis, restart, and recovery procedures.
Experience with requirements analysis, impact assessment, coding, testing, and deployment.
Knowledge of mainframe-to-distributed system integration technologies, including SFTP, FTP, TCP/IP, REXEC, and middleware connectivity.
Strong DB2 skills, including SQL development, stored procedures, database design, and performance tuning.
Strong troubleshooting, analytical, problem-solving, and communication skills.
Familiarity with application modernization, migration, infrastructure upgrades, and platform transitions.
Ability to create clear technical documentation and participate effectively in peer reviews and knowledge transfer.
5+ years of professional mainframe application development experience preferred.
Extensive hands-on experience developing and supporting COBOL and/or PL/I applications in enterprise mainframe environments.
Experience supporting production applications, troubleshooting complex issues, and participating in on-call or production support processes.
Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

Nice To Haves

Experience with SPUFI, QMF, and SAVRS is a plus.
Experience with SQL Server database analysis and troubleshooting is a plus.
Experience troubleshooting and supporting DB2 Connect is a plus.
Knowledge of mainframe security concepts, including ACF2, RACF, and user security administration, is a plus.
Experience with ServiceNow, Azure DevOps (ADO), change management, and production support processes is preferred.
Experience supporting infrastructure/environment migration testing and disaster recovery validation is preferred.
Experience with oil and gas commercial applications, including lease, contract, owner, division order, and accounting systems, is highly desirable.
Experience with application performance analysis and optimization is preferred.

Responsibilities

Design, develop, enhance, test, and maintain mainframe applications using COBOL, PL/I, and CA Easytrieve.
Develop and support applications utilizing IMS DB/DC, DB2, VSAM, and CICS.
Develop and maintain JCL for complex batch-processing environments.
Manage and monitor production jobs using CA Jobtrac and support production scheduling activities.
Perform source-code and release management using Endevor.
Work extensively with z/OS, MVS, JES, ISPF, and SDSF in development and production environments.
Troubleshoot production issues and perform debugging using File-AID, Abend-AID, and Xpediter.
Analyze and resolve abends, perform root-cause analysis, and execute restart and recovery procedures.
Participate in requirements analysis, impact assessments, coding, testing, implementation, and deployment activities.
Support mainframe-to-distributed system integrations using SFTP, FTP, TCP/IP, REXEC, and middleware connectivity.
Design and maintain databases, develop SQL, support DB2 stored procedures, and perform DB2 performance tuning.
Support system modernization, application migration, infrastructure upgrades, and platform transition initiatives.
Develop and maintain technical documentation, participate in peer reviews, and provide knowledge transfer to team members.
Provide application performance analysis and optimization to improve reliability, efficiency, and system responsiveness.
Support testing for infrastructure and environment migrations, including disaster recovery validation.
Work with production support, change management, and incident resolution processes as needed.
Support applications and business processes associated with commercial oil and gas environments, including lease, contract, owner, division order, and accounting systems.