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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mainframe Developer - **Company:** FIDELITY LLC - **Location:** Westlake, TX, United States - **Contract:** Temporary contract - **Skills:** Java (Programming Language), Applications Architecture, Automation of Tests, Unit Testing, Customer Information Control System (CICS), IBM Rational ClearCase, COBOL (Programming Language), Information Systems, IBM DB2, Software Debugging, Endevor, Job Control Language (JCL), IBM WebSphere MQ, Python (Programming Language), Mainframes, MVS (OS), Open Source Technology, Performance Tuning, Software Engineering, Software Systems, SQL Databases, Data Streaming, System Testing, Virtual Storage Access Methods, Web Services, Z/OS, Transaction Processing (Computing), Software Application Programming, File-aid, Git, Information Technology, Easytrieve, Software Version Control, Control M - **Published:** May 27, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=bec3cdcd2de589d2 ## About the Role Do you have experience in Version control systems?, We are looking for a Bachelor's degree (or foreign education equivalent) in Computer Science, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and five (5) years of experience in the job offered or five (5) years of experience performing mainframe brokerage and stock plan services systems application development., * Demonstrated Expertise ("DE") performing mainframe application development, test automation, and support, using COBOL, CICS, DB2, JCL, VSAM, MQ-Series, Java, Web Services, and SQL. * Experience in the development and deployment of Batch and CICS applicationsDE performing mainframe application development - file format and comparison * - using File-aid; performing version management using Endeavor; debugging and unit testing, using Intertest and Abend-Aid; and scheduling jobs using Control-M. * DE analyzing and crafting data flows for mainframe application development.DE performing mainframe application development and performance tuning within TSO and MVS operating system environments; developing applications, using Endevor, Git, ClearCase (for version control), Control-M (for scheduling), Abend-AID and Intertest (for debugging), File-Aid (for browsing), and Easytrieve (for report generation); and conducting performance tuning and capacity planning - reducing I/Os, CPU Time, MSUs, and MIPs * - using Strobe, iStrobe, Platinum Detector, and TMON. * Experience in open source technologies like Python ## Description We use knowledge of Financial Domain, Feed processing of Demographic and Financial feeds, Recordkeeping and Transaction processing to translate the business requirement to Software solutions developing Simple/Sophisticated Services to Onboard a New Client as well as Improvement to the process of an existing Client on a mainframe platform running under a Z/OS environment! We develop applications and provide support in a mainframe environment, using COBOL, DB2, CICS, JCL, and VSAM files. We analyze and recommend changes in project development policies, procedures, standards, and strategies to development subject specialists and management., * Performs as a full stack engineer, including requirements gathering, development, and testing. * Participates in architecture design teams and help define and implement application level architecture. * Develops applications on sophisticated projects, components, and subsystems for the division. * Recommends development testing tools and methodologies and reviews and validates test plans. * Responsible for QA readiness. * Plans and conducts system testing. * Develops comprehensive documentation for multiple applications or subsystems. * Establishes project plans for complex projects across multiple platforms * Plans and coordinates project schedules and assignments. * Acts as a primary liaison for business units to resolve various project/technology issues. * Provides technology solutions to daily issues and technical evaluation estimates on technology initiatives. * Advises senior management on technical strategy and mentors junior team members. * Performs independent and complex technical and functional analysis for multiple projects supporting several divisional initiatives. * Determine opportunities to innovate and provide solutions to the existing Process by Automation ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Grappling With Clunky Old Software? 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