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Senior Application Programmer – Mainframe Systems in Cerritos, CA

HonorVet TechnologiesDowney, CA🇺🇸United StatesPosted 4 Sept 2026

Why This Role Stands Out

This role offers a fantastic opportunity to lead complex mainframe system development and gain experience with Fortune 500 clients, perfect for a seasoned programmer seeking impactful projects. You'll thrive here if you're adept at translating intricate requirements into robust applications and ensuring software quality. Apply now to leverage your expertise and contribute to significant IT solutions.

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
Downey, CA, United States
Posted
18 hours ago
SQLCOBOLHTML

Job Description

HonorVet Technologies is a Service Disable Veteran-Owned IT staffing firm, ISO 9001, and ISO 27001 certified, working with federal agencies, state governments, and Fortune 500 enterprise clients across the US. What makes us different isn't a tagline; it's the way we work. We don't forward resumes and hope for the best. We take the time to understand where a professional like you are headed and only reach out when we genuinely believe there's a fit worth exploring. I came across your profile, and something stood out.
 
Position Title: Senior Application Programmer – Mainframe Systems
Work Location: Cerritos, CA 90703
Work Type: This assignment will require onsite work 5 days (M-F) per week initially and gradually allowing up to 2 days telework depending on the current project requirements. 
Duration: 12 months contract to start with the possibility of extension
 
Job Description:
A Senior Application Programmer for Mainframe Systems is responsible for leading and/or working on the most complex IT applications design, documentation, development, modification, testing, installation, implementation, and support of new or existing applications software.
The Senior Application Programmer for Mainframe Systems is responsible for analyzing and refining systems requirements; translating systems requirements into applications prototypes; planning and designing systems architecture; writing, debugging and maintaining code; determining and designing applications architecture; determining output media/formats; designing user interfaces; working with customers to test applications; assuring software and systems quality and functionality; integrating hardware and software components; writing and maintaining program documentation; evaluating new applications software technologies; and/or ensuring the rigorous application of information security/information assurance policies, principles and practices to the delivery of application software services. 

Skills Required
The Senior Application Programmer for Mainframe Systems will possess knowledge and experience in applications software development principles and methods sufficient to participate in the design, development, testing and implementation of new or modified applications software; organization’s operational environment; software design principles, methods and approaches; principles, methods and procedures for designing, developing, optimizing and integrating new and/or reusable systems components; pertinent government regulations; infrastructure requirements, database management principles and methodologies, including data structures, data modeling, data warehousing and transaction processing; functionality and operability of the current operating environment; systems engineering concepts and factors such as structured design, supportability, reliability, scalability and maintainability; optimization concepts and methods; establish and maintain cooperative working relationships with those contacted in the course of the work; and speak and write effectively and prepare effective reports.
 
Experience Required
This classification must have a minimum of seven (7) years of experience in electronic data processing systems design and programming with one or more of the software set forth below.
LANGUAGES: COBOL, Natural/ SuperNatural, IMS/DB/DC, DB2/SQL, Assembler, SAS, CICS; MF FOCUS
TOOLS/UTILITIES: MVS JCL, MVS TSO/ISPF, IBM OPTIM, FILE Manager, SPUFI, ICEMAN/ICETOOLS, SORT, VSAM, CLIST, FTP, DYL260/280, CA Gen (CoolGen), CA Endevor, CA Spool, CA OM Web Viewer, IBM Websphere, Debugger, N2O
DATABASES: DB2, IMS, ADABAS FOCUS; OS: z/OS
OTHER: EntireX, ASP, HTML, Cloverleaf.
 
Additional Experience Required
Minimum of seven (7) years of experience with IMS/DB2/COBOL/CICS programming in a mainframe environment.
 
Education Required
This classification requires the possession of a bachelor’s degree in an IT-related or Computer Science field. Additional qualifying experience may be substituted for the required education on a year-for-year basis.
 

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