COBOL/DB2 Application Developer at KonnectIT Chicago, IL

KonnectIT; Chicago (IL); On-site; USD 110,000 - 150,000; Full time

Job summary

KonnectIT in Chicago, IL is seeking a COBOL/DB2 Application Developer/Manager with more than six years of experience in enterprise application development and management. You will design, build, and modernize mainframe solutions using COBOL, DB2, IMS DB/DC, JCL, and CICS, ensuring reliability and performance.

You will collaborate with business analysts, QA, and operations, manage batch workflows, and contribute to modernization initiatives while documenting processes and enforcing SDLC best

Qualifications

• More than six years of experience in enterprise application development and management.
• Strong COBOL and DB2 expertise.
• Experience with IMS DB/DC, JCL, and CICS in enterprise environments.
• Understanding of SDLC and enterprise application architecture.
• Ability to troubleshoot and resolve application and performance issues.

Responsibilities

• Design, develop, enhance, and maintain mainframe applications using COBOL, DB2, IMS DB/DC, JCL, and CICS.
• Analyze business requirements and translate them into technical solutions.
• Write, optimize, and troubleshoot DB2 queries, stored procedures, and batch jobs.
• Support application performance tuning, debugging, and defect resolution.
• Collaborate with business analysts, QA teams, and operations to ensure smooth delivery.
• Document technical processes and contribute to system modernization initiatives.

Skills

COBOL

DB2

IMS DB/DC

JCL

CICS

Troubleshooting

Batch processing

Mainframe Architecture

SDLC

Tools

CA Scheduler

Mainframe tools

Job description

COBOL/DB2 Application Developer job at KonnectIT. Chicago, IL.

We are seeking a COBOL/DB2 Application Developer/Manager with more than six years of experience in enterprise application development and management. The ideal candidate will have strong expertise in COBOL and DB2, with proven experience maintaining, enhancing, and modernizing mainframe applications critical to business operations. Additional expertise in IMS DB/DC, JCL, and CICS is required for this role.

Key Responsibilities

• Design, develop, enhance, and maintain mainframe applications using COBOL, DB2, IMS DB/DC, JCL, and CICS.
• Analyze business requirements and translate them into technical solutions.
• Write, optimize, and troubleshoot DB2 queries, stored procedures, and batch jobs.
• Support application performance tuning, debugging, and defect resolution.
• Manage batch processing workflows with JCL and CA Scheduler.
• Provide production support and ensure system reliability.
• Collaborate with business analysts, QA teams, and operations to ensure smooth delivery.
• Document technical processes and contribute to system modernization initiatives.

Mandatory Skills

• Strong hands‑on expertise in COBOL and DB2.
• Experience with IMS DB/DC, JCL, and CICS in enterprise environments.
• Proficiency in designing, coding, testing, and supporting mainframe applications.
• Solid understanding of enterprise application architecture and SDLC.
• Ability to troubleshoot and resolve application and performance issues.

Desirable Skills

• Experience with CA Scheduler or similar job scheduling tools.
• Knowledge of application modernization strategies (e.g., migrating legacy applications to distributed or cloud platforms).
• Familiarity with performance monitoring and tuning in DB2 and CICS environments.
• Strong documentation and knowledge‑sharing skills.
• Exposure to Agile development methodologies.