<h2>Experience</h2><ul><li> Experienced in Financial services and account receivables and payments product processors and kwnoledgable of the various industry standards and file formats specification such as EDI, ACH, XML, BAI/BAI2, Comma or Pipe delimet files as well as Sequential text fomatting.</li></ul><h2>Key Responsibilities</h2><ul><li>Develop, maintain, and enhance mainframe applications.</li><li>Analyze business requirements and design technical solutions.</li><li>Write and test COBOL, JCL, and other mainframe code.</li><li>Debug and resolve application issues.</li><li>Optimize application performance.</li><li>Create and maintain technical documentation.</li><li>Collaborate with other developers, business analysts, and stakeholders.</li><li>Participate in code reviews.</li><li>Stay up-to-date on new mainframe technologies.</li></ul>Programming Languages:<ul><li>COBOL: Proficiency in COBOL is fundamental. This includes a deep understanding of COBOL syntax, data structures, and program control flow. Experience with different COBOL dialects (e.g., IBM COBOL, Micro Focus COBOL) is a plus.</li><li>JCL (Job Control Language): Expertise in JCL is essential for submitting jobs, managing datasets, and controlling the execution of programs on the mainframe. This includes a thorough understanding of JCL syntax, parameters, and system commands.</li><li>REXX: Familiarity with REXX scripting language is helpful for automating tasks and interacting with the mainframe environment.</li></ul>Database Management Systems:<ul><li>DB2: Strong experience with IBMs DB2 relational database management system is crucial. This includes skills in SQL, database design, performance tuning, and data management.</li></ul>Transaction Processing Systems:<ul><li>CICS (Customer Information Control System): In-depth knowledge of CICS is often required for developing online transaction processing applications. This includes understanding CICS commands, programming techniques, and system administration.</li></ul>Data Storage and Access Methods:<ul><li>VSAM (Virtual Storage Access Method): Understanding of VSAM file structures and access methods is important for working with mainframe data.</li><li>Sequential Files: Knowledge of sequential file processing techniques.</li></ul>Operating System:<ul><li>z/OS: A solid understanding of the z/OS operating system is fundamental. This includes knowledge of system services, security features, and resource management.</li></ul><h2></h2><h2>Essential Skills and Knowledge</h2>SDLC (Software Development Life Cycle):<ul><li>Familiarity with different SDLC methodologies (e.g., Waterfall, Agile) and their application in a mainframe environment.</li></ul>Debugging and Problem Solving:<ul><li>Strong analytical and problem-solving skills are essential for debugging complex mainframe applications. This includes the ability to use debugging tools and techniques to identify and resolve issues.</li></ul>Performance Tuning:<ul><li>Experience in optimizing mainframe applications for performance and efficiency. This includes identifying performance bottlenecks and implementing solutions to improve response times and resource utilization.</li></ul>Security:<ul><li>Understanding of mainframe security concepts and best practices. This includes knowledge of RACF (Resource Access Control Facility) or other security systems.</li></ul>Testing:<ul><li>Experience in testing mainframe applications, including unit testing, integration testing, and system testing.</li></ul>Documentation:<ul><li>Ability to create clear and concise documentation for mainframe applications.</li></ul><h2></h2><h2>Soft Skills</h2>Communication:<ul><li>Excellent written and verbal communication skills are essential for collaborating with other developers, business analysts, and stakeholders.</li></ul>Teamwork:<ul><li>Ability to work effectively in a team environment.</li></ul>Problem-Solving:<ul><li>Strong analytical and problem-solving skills.</li></ul>Adaptability:<ul><li>Ability to adapt to changing priorities and technologies.</li></ul>Learning Agility:<ul><li>A willingness to learn new technologies and techniques.</li></ul><h2></h2><ul></ul>Optional/Preferred SkillsDevOps:<ul><li>Experience with DevOps practices and tools in a mainframe environment.</li></ul>Automation:<ul><li>Experience in automating mainframe tasks using scripting languages or tools.</li></ul>Cloud Integration:<ul><li>Knowledge of integrating mainframe applications with cloud platforms.</li></ul>Modernization:<ul><li>Experience in modernizing mainframe applications using new technologies.</li></ul><h2></h2><ul></ul><div></div>------------------------------------------------------Job Family Group: Technology------------------------------------------------------Job Family:Applications Development------------------------------------------------------Time Type:Full time------------------------------------------------------Primary Location:New Castle Delaware United States------------------------------------------------------Primary Location Full Time Salary Range:$107,120.00 - $160,680.00 In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental &amp; vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.------------------------------------------------------Most Relevant Skills Please see the requirements listed above.------------------------------------------------------Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------Anticipated Posting Close Date:Aug 06, 2025------------------------------------------------------Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review <a href="https://www.citigroup.com/citi/accessibility/application-accessibility.htm" target="_blank">Accessibility at Citi</a>. View Citi’s <a href="https://www.citigroup.com/global/eeo-aa-policy" target="_blank">EEO Policy Statement</a> and the <a href="https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf" target="_blank">Know Your Rights</a> poster.