Senior Mainframe Systems Engineer — COBOL/JCL

FIS; Little Rock (AR); On-site; USD 125,000 - 212,000; Full time

Benefits offered by this job

Competitive salary and benefits

Flexible and creative work environment

Challenging projects in financial tech

Professional education and development

Community involvement opportunities

Job summary

FIS in Little Rock, Arkansas is seeking an experienced Mainframe Application Developer to support, enhance, and modernize core banking solutions on IBM z/OS. The role emphasizes COBOL, JCL, CICS, DB2, VSAM, and related mainframe technologies within a high-volume financial services setting.

The ideal candidate will have 5+ years of hands-on mainframe development, strong debugging and problem-solving skills, and the ability to work independently in a fast-paced environment.

Qualifications

• 5+ years of IBM z/OS mainframe application development experience
• Strong proficiency in COBOL and JCL programming
• Experience supporting and troubleshooting production mainframe applications
• Experience with mainframe batch processing, job scheduling, and job execution analysis
• Experience using mainframe debugging, testing, and diagnostic tools
• Experience working in financial services, banking, or other high-volume transaction processing environments
• Knowledge of software development lifecycle methodologies and application support processes
• Strong analytical and problem-solving skills with the ability to diagnose complex production issues
• Excellent verbal and written communication skills
• Ability to work independently and effectively manage multiple priorities in a fast-paced environment

Responsibilities

• Develop, enhance, maintain, and support IBM z/OS mainframe applications using COBOL, JCL, and related technologies
• Analyze, design, code, test, debug, document, implement, and maintain mainframe software solutions
• Research and resolve production issues within complex banking applications and batch processing environments
• Create and modify JCL, batch jobs, utilities, and supporting application components
• Perform root cause analysis for application failures, production incidents, and performance issues
• Analyze existing mainframe application logic and implement system enhancements based on business and client requirements
• Partner with business analysts, architects, and client stakeholders to translate requirements into technical designs
• Develop and maintain technical specifications, design documents, and operational procedures
• Participate in code reviews and promote mainframe development best practices
• Recommend opportunities for application modernization, process improvements, and operational efficiencies
• Support system integration testing, user acceptance testing, and production implementation activities
• Provide technical leadership and mentoring to junior developers and team members
• Participate in the programmer on-call rotation supporting critical banking applications
• Collaborate with distributed systems, operations, and infrastructure teams as needed
• Perform other related duties as assigned

Skills

COBOL

JCL

Mainframe debugging

Batch processing

Job scheduling

Analytical thinking

Communication skills

Multitasking

Tools

CICS

DB2

VSAM

IDCAMS

Sort

File Manager

Abend-AID

XPEDITER

Job description

FIS in Little Rock, Arkansas is seeking an experienced Mainframe Application Developer to support, enhance, and modernize core banking solutions on IBM z/OS. The role emphasizes COBOL, JCL, CICS, DB2, VSAM, and related mainframe technologies within a high-volume financial services setting.

The ideal candidate will have 5+ years of hands-on mainframe development, strong debugging and problem-solving skills, and the ability to work independently in a fast-paced environment.