> Markdown version of [/jobs/ext/4095825-mainframe-developer-mainframe-pl-i-senior-software-developer-req-id-rq11685](https://www.wearedevelopers.com/jobs/ext/4095825-mainframe-developer-mainframe-pl-i-senior-software-developer-req-id-rq11685). 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 - Mainframe (PL/I) - Senior Software Developer - Req ID: RQ11685 - **Company:** Arthur Grand Technologies - **Location:** Ontario, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Computer Programming, IBM DB2, Software Debugging, Endevor, Mainframes, Pl/i, Extensible Markup Language (XML), Z/OS, Transaction Processing (Computing) - **Published:** October 13, 2026 - **Apply:** https://jobs.smartrecruiters.com/ArthurGrandTechnologiesInc/744000155618759-mainframe-developer-mainframe-pl-i-senior-software-developer-req-id-rq11685 ## About the Role * PL/I V4.5+ (recent experience within the last 5 years) * IBM z/OS, IMS DB (HALDB/DEDB, PLITDLI), and DB2 for z/OS * PL/I/XML transaction processing * Endevor, IMS BMPs, MFS, and mainframe debugging tools * 10+ years of programming and analysis experience Public sector and transportation domain experience is an advantage.