> Markdown version of [/jobs/ext/3364163-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/3364163-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). --- # Mainframe developer - **Company:** Vision Square - **Location:** McLean, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Agile Methodology, Batch Processing, Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Software Debugging, Job Control Language (JCL), Rexx (Programming Language), Mainframes, Systems Development Life Cycle, SQL Databases, Z/OS, Scripting - **Published:** September 28, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3cf7c4ffa02c517a ## About the Role Strong hands-on experience with COBOL. Strong experience with REXX/REXX scripting. Proficiency in JCL. Experience with DB2 and SQL. Experience with CICS and online/batch processing. Strong knowledge of z/OS mainframe environment. Experience with debugging and production support. Good understanding of SDLC and Agile development practices. ## Related Videos - [Unlocking the Power of the Mainframe: Developing modern applications on z/OS](https://www.wearedevelopers.com/videos/764-unlocking-the-power-of-the-mainframe-developing-modern-applications-on-z-os) - [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) - [JavaScript? No. Java Scripts! - Scripting with Java](https://www.wearedevelopers.com/videos/2094-javascript-no-java-scripts-scripting-with-java) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Intermediate Bitcoin Script](https://www.wearedevelopers.com/videos/25-intermediate-bitcoin-script) - [Introduction to sCrypt - a smart contract language for Bitcoin SV](https://www.wearedevelopers.com/videos/24-introduction-to-scrypt-a-smart-contract-language-for-bitcoin-sv) ## 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) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [The 10 C++ programming questions to expect in an interview](https://www.wearedevelopers.com/magazine/50-the-10-c-programming-questions-to-expect-in-an-interview) - [Data Science & more: The Lopez dilemma](https://www.wearedevelopers.com/magazine/10-data-science-more-the-lopez-dilemma) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [The Best Software Developer Blogs to Read](https://www.wearedevelopers.com/magazine/156-the-best-software-developer-blogs-to-read)