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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # z/OS Mainframe Programmer - **Company:** ANALYTICA - **Location:** McLean, VA, United States - **Experience:** Expert - **Contract:** Temporary to permanent - **Skills:** Artificial Intelligence, Assembly Language, Computer Programming, Data Integrity, Software Debugging, Document Management Systems, Endevor, File Transfer, Job Control Language (JCL), Mainframes, Z/OS, Tso/ispf, File Transfer Protocol (FTP), Data Management, Software Version Control, Legacy Systems - **Published:** July 23, 2026 - **Apply:** https://www.careerjet.com/jobad/us30d7c2dc4c03abce5ce7be6edb62ccfc ## About the Role * 5+ years of experience with Assembler Language programming and JCL * Experience with IBM z/OS, TSO/ISPF, SDSF, Endevor, and FTP/SFTP/Mainframe File Transfers * Strong debugging and troubleshooting skills using tools like IBM Debug Tool, FILE Manager, and SDSF * Understanding of QSAM access methods * Must be a US Citizen and have active IRS MBI Clearance ## Description * Develop, maintain, and enhance legacy mainframe applications that support IRS tax processing, compliance, and data management systems. * Write, test, and troubleshoot programs using Assembler, JCL, and related IBM z/OS utilities. * Monitor and manage batch jobs through SDSF and other system tools, ensuring timely and accurate processing. * Debug and resolve production issues, performing root-cause analysis and ensuring system stability. * Manage code changes and version control using Endevor in compliance with IRS change management procedures. * Transfer and integrate data across systems using FTP/SFTP and other mainframe file management tools. * Collaborate with business and technical teams to analyze requirements, design solutions, and implement enhancements. * Document system specifications, program logic, and procedures to support maintenance and knowledge transfer. * Ensure compliance with IRS security and data integrity standards, participating in audits and reviews as needed. * Contribute to modernization efforts, supporting integration of legacy systems with emerging technologies and improving overall system performance., Analytica LLC is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all individuals, regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable federal, state, or local law. As a federal contractor, we comply with the Vietnam Era Veterans' Readjustment Assistance Act (VEVRAA) and take affirmative action to employ and advance in employment qualified protected veterans. We ensure that all employment decisions are based on merit, qualifications, and business needs. We prohibit discrimination and harassment of any kind. Analytica LLC also provides reasonable accommodations to applicants and employees with disabilities, in accordance with applicable law. To enhance efficiency, fairness, and accuracy, Analytica may use AI-assisted tools to support certain aspects of our hiring process. * Application Review: AI tools may help identify skills and experiences relevant to the role. * Interview Support: AI-powered notetaking tools may be used during interviews to document discussions and summarize key points. These tools are used to assist our team. All hiring decisions are made by Analytica recruiters and hiring managers. By submitting an application, you acknowledge that AI-assisted tools may be used to support parts of the application and interview process. When receiving email communication from Analytica, please ensure that the email domain is analytica.net to verify its authenticity. Powered by JazzHR, Job Title: Location: Remote Introduction This is an exciting opportunity for a skilled Mainframe Infrastructure Engineer to join a dynamic team. 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