> Markdown version of [/jobs/ext/1888321-mainframe-assembler](https://www.wearedevelopers.com/jobs/ext/1888321-mainframe-assembler). 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 Assembler - **Company:** Symphony Enterprises, LLC - **Location:** Wilmington, DE, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Adobe InDesign, Assembly Language, Software Debugging, Mainframes, Performance Tuning, Systems Development Life Cycle, Software Engineering, Z/OS, Mainframe Programming, Software Coding - **Published:** August 1, 2026 - **Apply:** https://www.dice.com/job-detail/404dd416-6ae4-484e-b9cb-e67b3faced7a ## About the Role We are looking for an experienced Mainframe Assembler Developer with 10+ years of hands-on experience in IBM Assembler programming. The ideal candidate should have strong expertise in design, coding, testing, debugging, and production support of mainframe applications. Must have experience with z/OS, the Software Development Life Cycle (SDLC), performance optimization, troubleshooting, and technical documentation. Strong analytical skills and the ability to work with architects and business teams to develop reliable, high-performance mainframe solutions are required., * IBM Assembler * z/OS * SDLC * Mainframe Design, Coding & Testing * Debugging & Troubleshooting * Performance Optimization * Technical Documentation * Production Support * 10+ Years of Mainframe Experience ## Related Videos - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) - [Passive ARM Assembly Skills for Debugging, Optimization (and Hacking)](https://www.wearedevelopers.com/videos/1083-passive-arm-assembly-skills-for-debugging-optimization-and-hacking) - [Grappling With Clunky Old Software? Start by Understanding What’s Inside!](https://www.wearedevelopers.com/videos/1189-grappling-with-clunky-old-software-start-by-understanding-what-s-inside) ## Related Articles - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [10 Highest Paying Programming Languages 2025](https://www.wearedevelopers.com/magazine/150-10-highest-paying-programming-languages-2025) - [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) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know)