IT Mainframe Developer

TEKNEWGEN LLC; United States; Remote; USD 120,000 - 150,000; Full time

Job summary

TEKNEWGEN LLC is seeking an IT Mainframe Developer to design, develop, and maintain enterprise mainframe applications remotely. You will work with COBOL, JCL, CICS, and DB2, ensuring high performance, security, and reliability for critical business systems.

The role covers full SDLC, production support, and collaboration with diverse teams to modernize and integrate mainframe solutions, with on-call rotations as needed.

Qualifications

• Bachelor's degree required.
• Typically 5+ years of mainframe development experience for a senior position.
• Strong experience with COBOL, JCL, DB2, and CICS.
• Experience with SDLC and enterprise application development.
• Strong troubleshooting and analytical skills.
• Experience working with production-critical applications.
• Strong communication and collaboration skills.

Responsibilities

• Design, develop, test, debug, and maintain mainframe applications.
• Develop and enhance applications using COBOL, JCL, CICS, DB2, and VSAM.
• Analyze business and technical requirements and translate them into application solutions.
• Perform application coding, unit testing, integration testing, and production implementation.
• Troubleshoot production issues and perform root-cause analysis.
• Optimize application performance, batch processing, and database operations.
• Develop and maintain JCL jobs, procedures, utilities, and batch processes.
• Work with DB2 databases, including SQL development, data access, and performance optimization.
• Develop and support CICS online transaction-processing applications.
• Maintain interfaces between mainframe applications and distributed/cloud systems.
• Participate in application modernization, migration, and integration initiatives.
• Perform impact analysis for system enhancements and changes.
• Prepare technical specifications, design documentation, test plans, and deployment documentation.
• Follow SDLC, change-management, security, and IT governance standards.
• Collaborate with business analysts, architects, QA teams, infrastructure teams, and other developers.
• Participate in production support and on-call rotations, where required.

Skills

COBOL

JCL

DB2

CICS

VSAM

z/OS

TSO/ISPF

Endevor

ChangeMan

Git/CI/CD

REXX

MQ

CA7

Control-M

Education

Bachelor's degree in Computer Science, Information Technology, Engineering, or related field

Tools

COBOL

JCL

DB2

CICS

Job description

++IT Mainframe Developer++

Location: 100% REMOTE

Visa Type: Citizens / / H1B1

**Contact Name:**Sri

Role Overview

The IT Mainframe Developer designs, develops, enhances, maintains, and supports enterprise applications running on mainframe platforms. The role focuses on delivering reliable, secure, and high-performing solutions for critical business systems, often supporting banking, insurance, retail, healthcare, manufacturing, or other large-scale enterprises.

Key Responsibilities

• Design, develop, test, debug, and maintain mainframe applications.
• Develop and enhance applications using COBOL, JCL, CICS, DB2, and VSAM.
• Analyze business and technical requirements and translate them into application solutions.
• Perform application coding, unit testing, integration testing, and production implementation.
• Troubleshoot production issues and perform root-cause analysis.
• Optimize application performance, batch processing, and database operations.
• Develop and maintain JCL jobs, procedures, utilities, and batch processes.
• Work with DB2 databases, including SQL development, data access, and performance optimization.
• Develop and support CICS online transaction-processing applications.
• Maintain interfaces between mainframe applications and distributed/cloud systems.
• Participate in application modernization, migration, and integration initiatives.
• Perform impact analysis for system enhancements and changes.
• Prepare technical specifications, design documentation, test plans, and deployment documentation.
• Follow SDLC, change-management, security, and IT governance standards.
• Collaborate with business analysts, architects, QA teams, infrastructure teams, and other developers.
• Participate in production support and on-call rotations, where required.

Core Technical Skills

• COBOL: Application development
• JCL: Batch processing/job control
• DB2: Database & SQL
• CICS: Online transaction processing
• VSAM: File/data management
• z/OS: Mainframe operating system
• TSO/ISPF: Mainframe development environment
• Endevor / ChangeMan: Source & change management
• Git / CI/CD: Increasingly used in modernization
• REXX: Scripting/automation
• MQ: Enterprise messaging
• CA7 / Control-M: Job scheduling

Mainframe Development Lifecycle

Requirements → Design → COBOL/JCL Development → DB2/CICS Development → Unit Testing → Integration Testing → QA → Production Deployment → Production Support

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, or related field.
• Typically 5+ years of mainframe development experience for a senior position.
• Strong experience with COBOL, JCL, DB2, and CICS.
• Experience with SDLC and enterprise application development.
• Strong troubleshooting and analytical skills.
• Experience working with production-critical applications.
• Strong communication and collaboration skills.

Senior Mainframe Developer

For a Senior IT Mainframe Developer, employers commonly expect additional experience with:

• Complex COBOL application architecture
• DB2 performance tuning
• CICS transaction optimization
• Large-scale batch processing
• Production incident management
• Application modernization
• Mainframe-to-cloud integration
• API and distributed-system integration
• Technical leadership and mentoring
• Code reviews and development standards
• Migration/conversion projects