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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Mainframe Application Developer - **Company:** Teradata - **Location:** Montgomery, AL, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Performance Management, Assembly Language, Build Automation, C++ (Programming Language), Customer Information Control System (CICS), Database Connection, Software Debugging, Programming Tools, Job Control Language (JCL), Rexx (Programming Language), Mainframes, IBM Resource Access Control Facility, Teradata SQL, Z/OS, Cloud Platform System, Performance Testing, Performance Monitor, Legacy Systems - **Published:** June 21, 2026 - **Apply:** https://dejobs.org/x/x/CF18FB275C90411CA7F5CDAA744B664D/job/ ## About the Role * 8-10 years of experience in IBM z/OS mainframe environments * Hands-on experience with SMP/E, APAR creation, and maintenance workflows * Proficiency in JCL and REXX scripting * Experience with dump analysis and debugging tools such as IPCS * Familiarity with performance monitoring tools (SMF, SDSF) * Solid understanding of mainframe security models (RACF, Top Secret, ACF2) * Ability to troubleshoot complex distributed and mainframe-integrated systems * Strong analytical and problem-solving skills What You'll Bring * Experience with C and C++ is a strong plus * Exposure to mainframe assembly language (ability to read and understand required; deep expertise is a plus) * Experience with CICS and IMS integration * Familiarity with database connectivity systems or the Teradata ecosystem * Experience working in hybrid environments involving mainframe and cloud systems ## Description Teradata is looking for a skilled Mainframe Developer to join our Customer Developer Tools (CDT) organization. This role is critical in supporting and evolving our mainframe-based connectivity solutions, ensuring reliability, performance, and seamless integration with Teradata Cloud systems., * Build, maintain, and support Teradata mainframe connectivity solutions and utilities * Diagnose and resolve complex customer issues, including APAR development and SMP/E packaging and maintenance * Analyze and synthesize customer mainframe environments to reproduce and troubleshoot issues in lab environments * Profile system, network, and application performance using tools such as SDSF and SMF * Collect, analyze, and debug system dumps using IPCS and related tools (e.g., XDC) * Understand and work within mainframe security frameworks including RACF, Top Secret, and ACF2 * Develop and maintain JCL and REXX scripts for build automation, testing, and performance validation * Read, understand, and maintain shared assembly code across multiple products * Collaborate with cross-functional teams, including architects, product managers, and support engineers Specialized Responsibilities (Legacy / Transitional Systems) While Teradata continues to modernize its platform, this role may include work on highly specialized legacy systems: * Contribute to and maintain a large-scale assembly-based codebase (TDP) requiring advanced debugging and system-level understanding * Support integration with CICS and IMS transaction environments * Assist in ensuring stability and backward compatibility as legacy systems are phased out Who You'll Work With You will work closely with engineering, support, and customer teams to diagnose complex issues, enhance existing systems, and contribute to modernization efforts as legacy components transition over time. ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [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) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) - [ WeAreDevelopers LIVE - the weekly developer show with Chris Heilmann and Daniel Cranney](https://www.wearedevelopers.com/videos/1365-wearedevelopers-live-the-weekly-developer-show-with-chris-heilmann-and-daniel-cranney) - [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 - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [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) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)