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Mainframe Developer

Apolis

ST. LOUIS, MO(remote)

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JOB DETAILS
SALARY
$50–$55 Per Hour
SKILLS
Access Control, Analysis Skills, Cobol Programming Language, Communication Skills, Cross-Functional, Data Sets, Database Technology, Debugging Skills, Documentation, IBM CICS (Customer Information Control System), IBM DB2, IBM IMS Database, IBM Mainframe Operating System, IBM TSO/ISPF, IBM z-OS Operating System, IP Multimedia System (IMS), Identify Issues, JCL (Job Control Language), Mainframe Computer, Microsoft Access Database, On Call, PL/1 (Programming Language 1), Performance Tuning/Optimization, Problem Solving Skills, Production Support, Quality Assurance, Release Notes, Root Cause Analysis, SQL (Structured Query Language), Secure Coding, Software Administration, Software Development Lifecycle (SDLC), Technical Writing, Transaction Processing/Management
LOCATION
ST. LOUIS, MO
POSTED
30+ days ago
Role: Mainframe Developer
Duration: 12+ Months
Location: Remote
 
Only W2
 
We are seeking a Mainframe Developer to develop, enhance, and support mission-critical applications on IBM z/OS. This role includes batch and/or online transaction processing, database work (DB2/IMS), testing, and production support.
 
Roles & Responsibilites
  • Design, develop, and maintain mainframe applications using COBOL (and/or PL/I), JCL, and related technologies.
  • Develop and support batch processing jobs (job streams, scheduling coordination, restarts, abend handling).
  • Build and maintain online applications using CICS and/or IMS TM, including transaction and screen/program changes.
  • Develop and optimize data access using DB2 (SQL) and/or IMS DB; perform basic performance tuning as needed.
  • Conduct impact analysis, estimate effort, and deliver enhancements/defect fixes through the SDLC (Software Development Life Cycle).
  • Perform debugging, root-cause analysis, and resolution of production issues; participate in on-call/support rotations as required.
  • Create and maintain technical documentation (program specs, job flows, runbooks, release notes).
  • Collaborate with cross-functional teams (business, QA, operations, infrastructure) to ensure stable releases and successful deployments.
  • Follow secure coding practices and comply with audit, access control, and data handling requirements.
Skills:
  • Hands-on experience with IBM z/OS mainframe development.
  • Strong proficiency in COBOL (or PL/I)
  • Strong proficiency in JCL and batch job processing concepts
  • Working experience with DB2 (SQL development and data handling) and/or IMS
  • Experience with ISPF/TSO and ability to navigate datasets, job logs, and execution outputs
  • Debugging and troubleshooting skills (including abend analysis)
  • Understanding of SDLC practices, testing, and release/change processes
  • Strong communication and documentation skills

About the Company

A

Apolis

Since 1996, RJT has provided successful SAP, Oracle, and IT consulting solutions and staffing services to clients around the world. The new Apolis brings you the same personalized service fortified with a greater array of IT solutions, global expertise, and cost-management strategies.

We are a global IT consultancy that seamlessly integrates experts and leading-edge solutions into your organization so you can focus on what really matters.

COMPANY SIZE
500 to 999 employees
INDUSTRY
Computer/IT Services
EMPLOYEE BENEFITS
Paid Sick Days, Employee Referral Program, Employee Events, Retirement / Pension Plans
WEBSITE
https://www.apolisrises.com/

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