Job Title- Mainframe and Unix Developer
Visa- Any
Duration- 12+ Months
Interview- Virtual
Client Location- Chicago, IL Onsite
Job Responsibilities
Job Description Mainframe Unix Developer 4-8 Years Experience
We are looking for an experienced Mainframe Developer with strong expertise in COBOL JCL DB2 VSAM and Unix Shell Scripting The ideal candidate will be responsible for developing supporting and optimizing mainframe applications building automation scripts managing backend integration workflows and ensuring reliability across production and batch systems This role requires strong technical skills problem-solving capabilities and the ability to work effectively with cross functional teams
Key Responsibilities
Mainframe Development Support
Develop enhance and maintain applications using COBOL JCL VSAM and DB2
Optimize JCL COBOL programs and DB2 queries to improve system performance and efficiency
Support daily batch processing ensure job success and resolve job abends promptly
Unix Shell Scripting Backend Integration
Ensure seamless integration between UNIX based automation and mainframe backend systems
Troubleshoot and enhance existing scripts improving stability and execution performance
Database PLSQL Development
Develop and maintain PLSQL procedures functions packages and triggers
Perform SQL tuning and optimize database queries for performance
Integrate shell scripts with relational databases Oracle DB2 MySQL or similar
Production Support Performance Optimization
Monitor scheduled jobs resolve production incidents and ensure overall batch stability
Conduct root cause analysis RCA and implement permanent fixes
Enhance performance of scripts jobs and database queries through continuous tuning
Collaboration Documentation
Work closely with stakeholders to gather requirements and translate them into scalable solutions
Participate in Agile ceremonies and collaborate with QA business and support teams
Create and maintain technical documentation including design specs support guides and system documentation
Required Technical Skills
Strong Handson experience in Mainframe technologies COBOL JCL VSAM DB2
Solid expertise in UNIX Linux Shell Scripting
Strong SQL and PLSQL skills procedures functions triggers packages
Experience integrating shell scripts with relational databases
Strong debugging analytical and problem-solving skills
Good understanding of batch processing and automation workflows
Ability to work independently and collaboratively within a team
Preferred Good to Have
Experience in banking cards or financial services domains
Experience with ticketing tools and production support processes
Familiarity with Git CICD pipelines or DevOps practices
Knowledge of Python or Java for extended automation or backend integrations
Additional mainframe skills such as
o CICS IMS and system administration on DB2CICSIMS
o REXX scripting for automation and migration tasks
Strong troubleshooting skills for IBM mainframe product related issues
Thanks & Regards
Vicky Yadav
Sr. Technical Recruiter
Contact -201-354-2897
Email – <a id="m_-1235710053743431999OWA2baf392b-a0bb-3b4a-9b2d-c8b41dc29cff" href="mailto:vicky.y@wonese.com" title="mailto:vicky.y@wonese.com” style=”border:0px;font:inherit;margin:0px;padding:0px;vertical-align:baseline” target=”_blank”>vicky.y@wonese.com
