Mainframe Developer

Job Title: Mainframe Developer

Location: Columbus, OH / Dallas, TX (Local Candidates Only)
Duration: 6+ Months

Job Summary

STAFFXPERT LLC is seeking a Mainframe Developer on behalf of our client in Columbus, OH / Dallas, TX. This role is ideal for experienced professionals with strong expertise in mainframe technologies who are passionate about maintaining and modernizing critical enterprise systems. The selected candidate will play a key role in developing, enhancing, and supporting legacy applications while contributing to modernization initiatives.

Key Responsibilities

• Develop, maintain, and support mainframe applications using COBOL, JCL, CICS, and DB2/IMS

• Work with DB2 and IMS databases for data access, performance tuning, and optimization

• Design and develop z/OS APIs and batch processing programs

• Analyze existing legacy systems and implement enhancements, fixes, and improvements

• Collaborate with cross-functional teams including business analysts, architects, and QA

• Translate business requirements into scalable technical solutions

• Participate in application modernization efforts, including re-engineering and re-platforming initiatives

• Follow Agile methodologies and DevOps practices for mainframe development (e.g., version control and CI/CD tools)

• Ensure high-quality code, performance, and system reliability

Required Skills & Qualifications

• 4 12 years of experience in mainframe development

• Strong hands-on experience with COBOL, JCL, CICS, and DB2/IMS

• Experience with database performance tuning and optimization

• Knowledge of batch processing and z/OS environments

• Familiarity with modern development practices such as Agile and DevOps

• Strong analytical and problem-solving skills

• Excellent communication and collaboration abilities

Preferred Qualifications

• Experience in banking or financial services domain

• Exposure to cloud platforms (such as AWS) for modernization initiatives

• Experience with Assembler is a plus

• Familiarity with mainframe DevOps tools and automation