COBOL Software Engineer-Banking/Payments

Job Description:

As a COBOL Software Engineer, you will help keep the systems that move money running smoothly. This role focuses on maintaining and improving the core platforms that process transactions, ensuring they remain reliable, accurate, and efficient. You'll have the opportunity to work on high-impact systems, solve complex problems, and contribute to the evolution of critical financial technology.

In this role, you have the opportunity to

Play a critical role in ensuring the stability and performance of the systems that power real-time financial transactions, supporting the infrastructure that enables money movement across banking platforms.

You are responsible for:

• Developing, maintaining, and enhancing batch processing programs supporting high-volume payment systems
• Supporting ~100 legacy COBOL programs and associated scripts running in an IBM RS6000 (AIX) environment
• Troubleshooting production issues, including batch failures, reconciliation discrepancies, and data inconsistencies
• Analyzing system behavior and resolving urgent issues impacting transaction processing
• Working with large datasets and performing SQL-based data analysis and troubleshooting
• Designing and monitoring batch jobs and scheduling workflows (overnight/daily processing)
• Supporting and improving legacy systems while contributing to modernization efforts
• Collaborating with cross-functional teams including payments, fraud, billing, and accounting
• Participating in an on-call rotation (approximately every 3 weeks once fully trained) to support critical systems

You are a part of:

A highly collaborative Payments Engineering team responsible for maintaining the systems that ensure accurate and timely transaction processing. The team is navigating a key transition with the retirement of a senior team member, creating an opportunity for a new hire to play a significant role in knowledge transfer and long-term system continuity.

To succeed in this role, you should have the following skills and experience:

Required:

• Strong programming experience (COBOL preferred, but open to C, Java, or similar languages)
• Experience working in Unix/Linux environments (AIX preferred)
• Proficiency with shell scripting (ksh/bash)
• Experience with batch processing and job scheduling (cron, Autosys, Control-M, etc.)
• Solid SQL skills and experience working with large datasets
• Strong troubleshooting and analytical skills
• Ability to support production systems and resolve high-priority issues
• Strong communication skills and ability to work cross-functionally

Preferred:

• Experience within banking, payments, or financial transaction systems
• Knowledge of reconciliation, accounting processes, or financial data flows
• Experience with legacy system modernization and integrations
• Familiarity with tools such as Azure DevOps
• Experience with file transfers, batch workflows, and performance tuning

What makes this role unique:

• Direct impact on mission-critical systems that enable banking transactions (debit cards, ATMs, payments infrastructure)
• Opportunity to gain deep expertise in complex legacy systems that are essential to the business
• High visibility role supporting core CSI payment operations
• Balance of project-based development work and real-time problem solving

In return, we offer you

A challenging and impactful role where you'll build specialized expertise in financial systems, work alongside experienced engineers, and contribute to the ongoing evolution of critical payment platforms.

As a forward-thinking software provider, Computer Services, Inc. (CSI) helps community and regional financial institutions solve their customers' needs through open and flexible technologies. In addition to its award-winning core banking platform, these include the latest in lending, digital banking, payments, financial crime prevention and cybersecurity. Building on its 60-year track record of personalized service, CSI is shaping the future of banking and empowering its customers to rival their competition. For more information about CSI, visit

CSI provides rewarding and challenging career opportunities for our employees. When determining your pay, we consider various factors such as your skills, qualifications, experience and location. Along with a competitive salary, this position includes eligibility for incentive awards based on both individual and business performance. We also offer a comprehensive range of benefits. To learn more about our benefits, visit: Benefits Summary

CSI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, physical and mental disability, marital status, veteran status, or any other characteristic protected by applicable law. If you need an accommodation during the recruitment process, please email us at and we will work with you to meet your accessibility needs.

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