Demo

Senior Application Programmer – Mainframe Systems

HireTalent - Staffing & Recruiting Firm
Downey, CA Contractor
POSTED ON 5/11/2026
AVAILABLE BEFORE 6/8/2026
Overview

A leading organization is seeking a Senior Application Programmer – Mainframe Systems to lead and support the design, development, enhancement, and maintenance of complex mainframe applications. This role plays a critical part in delivering high‐quality, secure, and reliable enterprise systems by translating business and system requirements into robust application solutions.

The position requires deep hands‐on mainframe expertise, strong analytical skills, and the ability to work closely with technical and business stakeholders. This role will initially require full onsite work with a gradual transition to limited telework based on project needs.

Responsibilities

  • Lead and contribute to the design, development, modification, testing, implementation, and support of complex mainframe applications
  • Analyze and refine system and business requirements; translate requirements into application designs and prototypes
  • Design application and system architecture, including data structures, interfaces, and output formats
  • Write, debug, optimize, and maintain production‐quality code
  • Integrate application software with databases, middleware, and operating system components
  • Perform application testing with users and stakeholders to validate functionality and quality
  • Ensure compliance with information security and information assurance policies and standards
  • Conduct software quality assurance activities to ensure reliability, scalability, and maintainability
  • Prepare and maintain technical documentation, program specifications, and operational guides
  • Evaluate and recommend new technologies, tools, and enhancements
  • Collaborate with cross‐functional teams to support enterprise application delivery
  • Establish and maintain effective working relationships and communicate technical concepts clearly

Required Qualifications

  • Bachelor’s degree in Computer Science, Information Technology, or a related field
    • Additional qualifying experience may substitute on a year‐for‐year basis
  • 7 years of experience in electronic data processing systems design and programming
  • Mandatory: At least 7 years of hands‐on experience with ADABAS / NATURAL programming
  • Strong experience with mainframe application development and support
  • Ability to work independently and lead complex technical initiatives
  • Strong written and verbal communication skills
Technical Skills

Languages & Frameworks

  • COBOL
  • Natural / SuperNatural
  • Assembler
  • SAS
  • CICS
  • IMS/DB/DC
  • DB2 / SQL
  • MF FOCUS

Tools & Utilities

  • MVS JCL
  • TSO / ISPF
  • CA Gen (CoolGen)
  • CA Endevor
  • CA Spool
  • CA OM Web Viewer
  • IBM OPTIM
  • FILE Manager
  • SPUFI
  • ICEMAN / ICETOOLS / SORT
  • VSAM
  • CLIST
  • FTP
  • Debugger
  • N2O

Databases

  • DB2
  • IMS
  • ADABAS
  • FOCUS

Operating Systems & Platforms

  • z/OS
  • IBM WebSphere

Additional Technologies

  • EntireX
  • ASP
  • HTML
  • Cloverlea

Hourly Wage Estimation for Senior Application Programmer – Mainframe Systems in Downey, CA
$60.00 to $75.00
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