Demo

Senior Application Programmer – Mainframe Systems

Russell, Tobin & Associates
Downey, CA Contractor
POSTED ON 6/9/2026
AVAILABLE BEFORE 7/9/2026
Our client a administrative organization is seeking a Senior Application Programmer – Mainframe Systems.
 
Apply today for consideration!
 
Job Title: Senior Application Programmer – Mainframe Systems
Location: Downey, CA (Hybrid )
Duration: 12 Months Contract

Pay range: $70 to $80 per hour (DOE)
 
Job Description:
  • Lead the design, development, enhancement, testing, implementation, and support of complex mainframe applications and software systems.
  • Analyze business and system requirements and translate them into technical specifications, application prototypes, and software solutions.
  • Design and develop scalable application architectures, system components, user interfaces, and output formats.
  • Write, debug, maintain, and optimize application code to ensure system reliability, performance, and maintainability.
  • Collaborate with business users and stakeholders to validate requirements, conduct testing, and ensure successful application deployment.
  • Integrate hardware and software components while ensuring system functionality, quality, and performance standards.
  • Create and maintain technical documentation, program specifications, and operational procedures.
  • Evaluate emerging technologies and recommend enhancements to improve application performance and operational efficiency.
  • Ensure compliance with information security, information assurance, and organizational governance policies.
 Technical Skills:
  • Bachelor’s degree in computer science, Information Technology, or a related field. Equivalent experience may be considered in lieu of education.
  • 7 years of experience in mainframe systems design, development, programming, and support.
  • 5 years of hands-on experience with IMS, DB2, COBOL, and CICS programming in an enterprise mainframe environment.
  • Strong experience with Mainframe Application Development using COBOL, IMS, DB2, CICS, and JCL.
  • Strong understanding of Software Development Life Cycle (SDLC), systems analysis, application architecture, and design methodologies.
  • Experience with database design, data modeling, transaction processing, and data management principles.
  • Knowledge of systems engineering concepts including scalability, reliability, maintainability, and supportability.
  • Excellent analytical, problem-solving, communication, and documentation skills.
  • Ability to work effectively with technical teams, business stakeholders, and management.
Programming Languages & Technologies
  • 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
Operating Systems
  • z/OS
 Additional Technologies
  • EntireX
  • ASP
  • HTML
  • Cloverleaf
 
Work Arrangement:
  • Onsite work required Monday through Friday during the initial phase of the assignment.
  • Opportunity for up to two (2) telework days per week based on project requirements and performance.
 
Russell Tobin offers eligible employee’s comprehensive healthcare coverage (medical, dental, and vision plans), supplemental coverage (accident insurance, critical illness insurance and hospital indemnity), 401(k)-retirement savings, life & disability insurance, an employee assistance program, legal support, auto, home insurance, pet insurance and employee discounts with preferred vendors.

Equal Employment Opportunity

Russell Tobin is an equal opportunity employer. We do not discriminate on the basis of the race, religious creed, color, national origin, ancestry, physical disability, mental disability, reproductive health decision making, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, age, sexual orientation, veteran or military status, or any other characteristic protected by applicable federal, state, or local law.
 
Fair Chance Employment
Russell Tobin is a Fair Chance employer. We consider all qualified applicants, including those with criminal histories, in a manner consistent with applicable state and local Fair Chance laws and ordinances, including, the California Fair Chance Act and all applicable local Fair Chance ordinances.
 
Accommodations
We are committed to providing reasonable accommodations to applicants and employees with disabilities. If you require a reasonable accommodation to participate in the application or interview process, or to perform the essential functions of this role, please contact us. 
 
Only applicable for San Francisco Candidates: Under the San Francisco Lactation in the Workplace Ordinance, we will provide written notice of lactation accommodation rights, and this notice will automatically be given upon hiring, any inquiry of parental leave or lactation accommodation.

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Salary : $70 - $80

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