> Markdown version of [/jobs/ext/183297-as400-cobol-programmer](https://www.wearedevelopers.com/jobs/ext/183297-as400-cobol-programmer). 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). --- # AS400 COBOL Programmer - **Company:** MOBIS PARTS AMERICA LLC - **Location:** Fountain Valley, CA, United States - **Experience:** Expert - **Salary:** $90,466.0 - $134,342.0 - **Contract:** Temporary to permanent - **Skills:** Java (Programming Language), Microsoft Windows, IBM AIX, IBM System I, JIRA, Software Bug Management, COBOL (Programming Language), Software Documentation, Databases, IBM DB2, Relational Databases, Linux, Eclipse (Software), Job Scheduling, Simple Mail Transfer Protocols, Microsoft Office, Microsoft Visio, Microsoft SQL Server, MySQL, SQL Databases, File Transfer Protocol (FTP), Enterprise Software Applications - **Published:** May 20, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=dde62cf70ad65c97 ## About the Role Do you have experience in Windows?, Do you have a Bachelor's degree?, Education Requirements * Bachelor's degree in a related field or equivalent work experience and demonstrated skills Experience Requirements * Minimum of 5 years of system design/programming experience with COBOL on the AS400 platform * Operating Systems: iSeries, AS400, AIX, Linux, Windows Databases: DB2, SQL Server, MySQL or similar RDBMS * Software & Languages : COBOL, RPG, CL * Applications : Job Scheduler, FTP, Email (SMTP), DBViz or similar SQL Query Tool * Tools : Microsoft office, VISIO, Change Management, Jira, Eclipse (optional) * Optional / Nice to have experience with working in a Java / Web front-end environment. Skills * Utilize complex computer operations and advanced features of software packages * Deal with a variety of abstract and concrete variables. ## Description The programmers are responsible for direct support of AMOS (Advanced Mobis Operating System) including internal functionality and interfaces with any external systems. Support includes development of user applications, bug fixes, modification/enhancements to existing functions, testing, system documentation, and ad-hoc data gathering/queries. Programmers support MPA Corporate users, MPA Parts Distribution Centers, MRC, and other Mobis Subsidiaries using U.S AMOS. Support may require coordination with the systems team at Mobis HQ. Support hours may extend beyond normal business hours at MPA Corporate offices in order to support users in different time zones and countries or coordinate with staff in Korea., * Develop design specification based on business user requirements * Program development * Testing of new/modified programs * Troubleshoot system problems * Ad hoc data gathering/queries Key Performance Indicators * Develop design specification * Program development * Create test plans, test cases and perform unit, integration and parallel testing of all processes. * Coordinate testing with client and verify accuracy of test results * Perform quality control of programs and system changes prior to implementation * Implement project installation to production * Diagnose and troubleshoot daily operations, programs and system problems. * Operation program & logic research and documentation. * Provide support to AMOS operational staff for error resolution Work Schedule & Travel Requirements * Monday through Friday, 8:00 am - 5:00 pm. * Minimal overnight travel (up to 10%) by land and/or air. ## Related Videos - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Integrate your Cognitive Assistant with 3rd-party DBs and software](https://www.wearedevelopers.com/videos/249-integrate-your-cognitive-assistant-with-3rd-party-dbs-and-software) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Java Basics](https://www.wearedevelopers.com/magazine/122-java-basics) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)