Sr. Mainframe developer to support and maintain systems(z/OS, IDMS related system and utilities, COBOL, ADS/o, and JCL) for a Government client
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on March 28th, 2025
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Starting date : 1 position to fill as soon as possible
Description
Our client is looking for a Sr. Mainframe developer to support and maintain systems(z/OS, IDMS related system and utilities, COBOL, ADS/o, and JCL) for a Government client.
Overview:
You are a highly skilled Senior Mainframe Developer. The ideal candidate will play a critical role in maintaining, enhancing, and supporting Mainframe systems to meet evolving business needs. This position requires an expert in z/OS, IDMS related system and utilities, COBOL, ADS/o, and JCL. They must also possess a strong ability to collaborate with cross-functional teams to deliver high-quality solutions and analysis of Mainframe systems.
Must Have's:
- 8+ years of experience in mainframe application development and maintenance
- 6+ years with z/OS, IDMS related system and utilities, COBOL, ADS/o, and JCL
- 6+ years of experience in mainframe IDMS development and maintenance
- Experience with IDMS replication tool Experience in database management with OCF, SCHEMA, SSC
- Proven track record in debugging, performance tuning, and problem resolution in mainframe environments
- Experience mainframe emulators such as Quick3270 and TN3270 Plus
- Strong knowledge of batch and online processing
Key Responsibilities:
System Development, Maintenance & Problem Resolution:
- Analyze business requirements and translate them into robust and mainframe application designs
- Develop, enhance, and maintain mainframe programs using in z/OS, IDMS, COBOL, ADS/o, and JCL to ensure functionality aligns with business objectives
- Perform comprehensive testing to validate solutions before deployment
- Further develop the Mainframe application to implement enhancements and resolve issues as per business requirements
- Troubleshoot production issues by analyzing logs, debugging code, and resolving errors to ensure minimal downtime
- Provide root cause analysis for recurring issues and implement permanent solutions to prevent future disruptions
- Collaborate with other IT teams to resolve complex cross-platform integration problems.
Mainframe Database Management
- Design, implement, and maintain IDMS database structures to support application development and business requirements
- Monitor Mainframe performance, conduct capacity planning and resolution to ensure ongoing sustainability
- Coordinate with key database administrators and stakeholders to ensure proper backup, recovery, and data security procedures are followed and executed.
Documentation, Integration & Collaboration:
- Collaborate with technical enterprise and modernization teams to integrate or document mainframe systems related to batch jobs, APIs, shared drives, or mainframe application functionality
- Prepare and maintain detailed technical documentation, including program specifications, user guides, system workflows, and architectural diagrams
- Work closely with business analysts to understand end-user requirements and translate them into technical specifications
- Act as a liaison between the mainframe team and other IT teams to facilitate seamless cross-platform development and support
- Ensure all system changes and enhancements are documented and approved according to organizational protocols
- Engage with business stakeholders to provide technical insights, explain system functionalities, and recommend solutions to business challenges
- Act as a subject matter expert (SME) for mainframe systems during audits, technical discussions, and strategy meetings
Requirements
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