Location: Norwalk area, CA Assignment: Approximately 12-month contract Schedule: Monday through Friday, 8:00 a.m. to 5:00 p.m., 40 hours per week Work arrangement: Onsite five days per week for at least the first six months. Up to two remote days per week may become available afterward, depending on project requirements. We have an opportunity for an experienced Senior Mainframe Application Programmer to support complex application development, enhancement, and maintenance. This role requires strong ADABAS/NATURAL programming experience and the ability to translate business requirements into reliable, secure mainframe solutions. What You’ll Do • Troubleshoot application issues, debug code, and improve system performance, reliability, and maintainability. • Collaborate with business users and technical teams to clarify requirements and validate application functionality. • Develop, modify, and maintain mainframe applications using NATURAL and ADABAS. • Plan and execute application testing, implementation, and ongoing production support. • Contribute to application architecture, database design, and integration of new or reusable system components. • Prepare and maintain technical specifications, program documentation, and implementation materials. • Apply information security requirements and quality standards throughout the development lifecycle. • Evaluate software technologies and recommend improvements to existing applications and development practices. Required Qualifications • At least seven years of experience in systems design and programming, including at least seven years of demonstrated ADABAS/NATURAL programming experience in a mainframe environment. • Proficiency with the following technologies: • Language: NATURAL • Database: ADABAS • Tools and utilities: JCL, TSO/ISPF, Predict, N2O, and CA Spool • Operating system: z/OS • Additional technologies: EntireX, SuperNatural, and Cloverleaf • Knowledge of software design, development, testing, implementation, and support practices. • Understanding of database management, data structures, data modeling, and transaction processing. • Ability to design and maintain scalable, reliable applications and integrate system components. • Strong analytical, troubleshooting, documentation, and communication skills. • Ability to work effectively with business stakeholders and technical teams. • Bachelor’s degree in information technology, computer science, or a related field. Additional qualifying experience may substitute for the required education on a year-for-year basis. Additional Details • Background check required. • No travel required. • Must be available to work onsite in the Norwalk area five days per week during the initial assignment period.