> Markdown version of [/jobs/ext/2941638-senior-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/2941638-senior-mainframe-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 Developer - **Company:** ICONMA LLC - **Location:** Weehawken Township, NJ, United States - **Experience:** Expert - **Salary:** $120,000.0 - $155,800.0 - **Contract:** Temporary to permanent - **Skills:** Agile Methodology, Unit Testing, Batch Processing, Customer Information Control System (CICS), COBOL (Programming Language), Code Review, IBM DB2, Software Debugging, Emulators, Job Control Language (JCL), Mainframes, Online Transaction Processing, Software Tools, SQL Stored Procedures, Virtual Storage Access Methods, File Transfer Protocol (FTP), Gitlab, Software Version Control, Control M - **Published:** September 16, 2026 - **Apply:** https://www.careerjet.com/job/usc03ac9ab5b147fbc1e93c0d89cc7b8c4/eaa ## About the Role * Cobol * CICS * DB2 * More than 10 years of hands-on development experience with strong proficiency in mainframe technologies, including COBOL, JCL, CICS, EZYTRIEVE, IBM DB2, VSAM, MQ, NDM/SFTP file transmissions, and SORT. * In-depth knowledge of IBM IDZ Mainframe Emulation Software and IDZGit source code management. * Strong understanding of scheduling software used in the Bank's batch processing environment, such as Control-M. * Experience writing and optimizing batch jobs, stored procedures, and online transactions. * Experience performing code reviews, unit testing, and debugging. * Knowledge of Agile methodologies and GitLab. * Good-to-have knowledge of financial products such as InvestOne or similar platforms. * The ability to apply application expertise to quickly diagnose and resolve issues while maintaining client service level agreements. * Experience using AI tools such as Windsurf, Devin, and Claude to develop solutions is preferred. ## Related Videos - [Data Fabric in Action - How to enhance a Stock Trading App with ML and Data Virtualization](https://www.wearedevelopers.com/videos/253-data-fabric-in-action-how-to-enhance-a-stock-trading-app-with-ml-and-data-virtualization) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Brewing Tea over the Internet](https://www.wearedevelopers.com/videos/697-brewing-tea-over-the-internet) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Business Strategies for Scaling European Tech](https://www.wearedevelopers.com/videos/1694-business-strategies-for-scaling-european-tech) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Data Science & more: The Lopez dilemma](https://www.wearedevelopers.com/magazine/10-data-science-more-the-lopez-dilemma) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development)