Mainframe Developer
3B Staffing LLC
Title :Senior Mainframe Developer & Production Support
Location : Remote (EST and CST Only)
Duration : Contract Job Summary
We are seeking an experienced Senior Mainframe Developer & Support Specialist with strong expertise in IBM z/OS environments. The role involves designing, developing, enhancing, and supporting mission-critical mainframe applications. The ideal candidate will have deep technical skills in COBOL, DB2, JCL, and CICS, along with experience in production support, incident management, and batch scheduling.
Key Responsibilities Development & Enhancement Design, code, test, and deploy applications using COBOL, JCL, and DB2 (including stored procedures).
Develop and maintain online (CICS) and batch processing systems.
Work with VSAM files, DB2 databases, and file processing utilities (SORT).
Ensure code quality, performance optimization, and adherence to coding standards.
Participate in application modernization and system upgrades where required. Production Support
Provide L2/L3 production support for mainframe applications.
Troubleshoot and resolve issues related to batch failures, abends, and data inconsistencies.
Support Tivoli Workload Scheduler (TWS) batch job scheduling and monitoring.
Perform root cause analysis (RCA) and implement preventive solutions.
Handle incident, problem, and change management processes.
Integration & Middleware Work with IBM MQ for message-based integrations.
Support CICS transaction flows and troubleshoot transaction-related issues.
Collaborate with distributed systems teams for end-to-end interface support.
Configuration & Code Management Use code management tools (e.g., LCM or similar) for version control, migration, and deployment.
Manage code promotion across environments (DEV, QA, PROD).
Ensure proper documentation and audit compliance.
Collaboration & Communication Collaborate with business analysts, developers, QA teams, and infrastructure teams.
Provide technical guidance and mentoring to junior team members.
Participate in release planning, code reviews, and design discussions. Required Skills & Technical Expertise
Platform: IBM Mainframe (z/OS)
Programming: COBOL
Database: DB2, DB2 Stored Procedures
Job Control: JCL
File Handling: VSAM
Online Systems: CICS
Schedulers: Tivoli Workload Scheduler (TWS)
Middleware: IBM MQ
Utilities: SORT
Code Management: LCM or equivalent tools
Other Tools/Knowledge: ZWDYL (or similar framework/tools) Nice to Have
Experience with Hogan Banking System
Exposure to mainframe modernization initiatives
Knowledge of Agile/Scrum methodologies
Automation and scripting for batch/monitoring improvements Experience & Qualifications
8+ years of experience in Mainframe Development & Support
Strong experience in production support environments (24/7 support model preferred)
Proven ability to troubleshoot complex system issues
Bachelor's degree in computer science, Information Systems, or related field Key Competencies
Strong problem-solving and analytical skills
Ability to work under pressure in production environments
Excellent communication and documentation skills
Team player with mentoring capability Work Environment
Require participation in on-call rotation
Support for batch cycles and critical production windows
Location : Remote (EST and CST Only)
Duration : Contract Job Summary
We are seeking an experienced Senior Mainframe Developer & Support Specialist with strong expertise in IBM z/OS environments. The role involves designing, developing, enhancing, and supporting mission-critical mainframe applications. The ideal candidate will have deep technical skills in COBOL, DB2, JCL, and CICS, along with experience in production support, incident management, and batch scheduling.
Key Responsibilities Development & Enhancement Design, code, test, and deploy applications using COBOL, JCL, and DB2 (including stored procedures).
Develop and maintain online (CICS) and batch processing systems.
Work with VSAM files, DB2 databases, and file processing utilities (SORT).
Ensure code quality, performance optimization, and adherence to coding standards.
Participate in application modernization and system upgrades where required. Production Support
Provide L2/L3 production support for mainframe applications.
Troubleshoot and resolve issues related to batch failures, abends, and data inconsistencies.
Support Tivoli Workload Scheduler (TWS) batch job scheduling and monitoring.
Perform root cause analysis (RCA) and implement preventive solutions.
Handle incident, problem, and change management processes.
Integration & Middleware Work with IBM MQ for message-based integrations.
Support CICS transaction flows and troubleshoot transaction-related issues.
Collaborate with distributed systems teams for end-to-end interface support.
Configuration & Code Management Use code management tools (e.g., LCM or similar) for version control, migration, and deployment.
Manage code promotion across environments (DEV, QA, PROD).
Ensure proper documentation and audit compliance.
Collaboration & Communication Collaborate with business analysts, developers, QA teams, and infrastructure teams.
Provide technical guidance and mentoring to junior team members.
Participate in release planning, code reviews, and design discussions. Required Skills & Technical Expertise
Platform: IBM Mainframe (z/OS)
Programming: COBOL
Database: DB2, DB2 Stored Procedures
Job Control: JCL
File Handling: VSAM
Online Systems: CICS
Schedulers: Tivoli Workload Scheduler (TWS)
Middleware: IBM MQ
Utilities: SORT
Code Management: LCM or equivalent tools
Other Tools/Knowledge: ZWDYL (or similar framework/tools) Nice to Have
Experience with Hogan Banking System
Exposure to mainframe modernization initiatives
Knowledge of Agile/Scrum methodologies
Automation and scripting for batch/monitoring improvements Experience & Qualifications
8+ years of experience in Mainframe Development & Support
Strong experience in production support environments (24/7 support model preferred)
Proven ability to troubleshoot complex system issues
Bachelor's degree in computer science, Information Systems, or related field Key Competencies
Strong problem-solving and analytical skills
Ability to work under pressure in production environments
Excellent communication and documentation skills
Team player with mentoring capability Work Environment
Require participation in on-call rotation
Support for batch cycles and critical production windows
Vacancy posted 2 days ago
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