Mainframe Developer at Programmers.io Jacksonville, FL

Comunidade Metodista; Jacksonville (FL); On-site; USD 90,000 - 130,000; Full time

Job summary

Programm ers.io in Jacksonville, FL is seeking a skilled Mainframe Developer to join the team for development, maintenance, and enhancement of mission-critical applications. The candidate should have extensive COBOL, DB2, JCL, CICS, IMS-DB experience and be comfortable with 24/7 production support.

Responsibilities include design, development, testing, and implementation of new and existing business applications, plus collaboration with cross-functional teams to resolve issues and improve

Qualifications

• 5 to 15 years of hands-on mainframe development experience.
• Expertise in COBOL, DB2, JCL, IMS-DB, CICS and VSAM.
• Experience providing 24/7/365 production support.

Responsibilities

• Design, develop, test, and implement new and existing mainframe applications.
• Provide round-the-clock production support and troubleshoot systems.
• Develop interfaces and reports to support business operations.
• Conduct system integration and user acceptance testing.
• Review, modify, and debug programs to improve performance.
• Collaborate with cross-functional teams to resolve issues.

Skills

COBOL

DB2

JCL

IMS-DB

CICS

VSAM

Tools

Changeman

File-Manager

IBM Debug Tool

dBeaver

IWS Job Scheduler

MQMON

TSO/ISPF

Job description

Mainframe Developer job at Programmers.io. Jacksonville, FL. Job Summary

We are seeking a skilled Mainframe Developer to join our team and support the development, maintenance, and enhancement of mission-critical applications. The ideal candidate will have extensive experience in COBOL, DB2, JCL, CICS, IMS-DB, and other mainframe technologies, with a strong focus on application development and 24/7/365 production support.

Key Responsibilities

• Design, develop, test, and implement new and existing business applications.
• Provide round-the-clock production support and troubleshoot Mainframe systems to ensure high availability and reliability.
• Develop interfaces and reports to support business operations.
• Conduct system integration and user acceptance testing.
• Review, modify, and debug existing programs to improve performance and reliability.
• Collaborate with cross-functional teams to resolve issues and implement enhancements.

Technical Environment

• Languages & Tools: COBOL, JCL, Changeman, File-Manager, IBM Debug Tool, dBeaver, IWS Job Scheduler, MQMON, TSO/ISPF
• Databases: DB2, IMS-DB
• Transaction Management: CICS
• File Systems: VSAM

Required Qualifications

• 5 to 15 years of hands‑on experience in:
• COBOL
• DB2
• JCL
• IMS-DB
• CICS
• VSAM
• Experience in providing 24/7/365 production support for critical systems.
• Strong problem-solving and analytical skills.
• Excellent communication and teamwork abilities.

Preferred Qualifications

• Experience with job scheduling tools like IWS.
• Familiarity with debugging and file management tools.
• Exposure to Agile or DevOps environments is a plus.

Soft Skills

• Strong organizational and time management skills.
• Ability to work independently and in a team-oriented environment.
• Proactive attitude with a focus on continuous improvement.
• Effective communication with technical and non-technical stakeholders.
• Adaptability to changing priorities and business needs.