> Markdown version of [/jobs/ext/3092942-senior-mainframe-application-developer](https://www.wearedevelopers.com/jobs/ext/3092942-senior-mainframe-application-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Mainframe Application Developer - **Company:** Ampcus Inc - **Location:** New York, NY, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), COBOL (Programming Language), Databases, IBM DB2, Job Control Language (JCL), Mainframes, Software Engineering, Virtual Storage Access Methods, Tso/ispf, Software Troubleshooting - **Published:** September 26, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/18444442?backUrl=%2Fcareer%2F18444442%2FSenior-Mainframe-Application-Developer-New-York-New-York ## About the Role * Senior-level experience, typically 7+ years, in Mainframe Application Development. Technical Stack: * Core Mainframe: JCL, VSAM, TSO/ISPF. * Languages: COBOL (Expert level). * Database: DB2 (Strong proficiency). * Other: SAM, Java, and other relevant mainframe tools. Soft Skills: * Self-Driven: Ability to work autonomously and manage time effectively in a remote setting. * Proactive: Must anticipate issues and suggest solutions rather than just reacting to tickets. * Communication: Strong verbal and written communication skills. Preferred Qualifications * Experience working in large-scale enterprise environments. * Prior experience collaborating with or working alongside IBM resources. ## Description We are seeking a highly skilled and proactive Senior Mainframe Application Developer to join our team. In this role, you will be responsible for maintaining and enhancing critical mainframe applications. We are looking for a self-starter who can hit the ground running, work independently, and drive results without constant supervision., * Design, develop, and maintain applications using COBOL and Core Mainframe technologies. * Manage and optimize DB2 databases and perform SAM (Systems Asset Management/Storage Access Method) related tasks. * Integrate mainframe systems with modern applications using Java. * Troubleshoot complex technical issues and provide senior-level support for production environments. * Proactively identify areas for system improvement and optimization.