Cards Mainframe Developer

Overview We are looking for an experienced Mainframe Developer with strong expertise in COBOL, JCL, DB2, VSAM and Unix Shell Scripting. The ideal candidate will develop and optimize mainframe applications, build automation scripts, manage backend integration workflows, and ensure reliability across production and batch systems. This role requires strong technical skills, problem‑solving capabilities, and the ability to work effectively with cross‑functional teams. Key Responsibilities Develop, enhance and maintain applications using COBOL, JCL, VSAM and DB2. Troubleshoot, debug and resolve mainframe application issues across development, testing and production environments. Optimize JCL, COBOL programs and DB2 queries to improve system performance and efficiency. Support daily batch processing, ensure job success and resolve job abends promptly. Develop and maintain Unix/Linux Shell Scripts for automation, batch scheduling and system integrations. Ensure seamless integration between Unix‑based automation and mainframe backend systems. Troubleshoot and enhance existing scripts to improve stability and execution performance. Develop and maintain PLSQL procedures, functions, packages and triggers. Perform SQL tuning and optimize database queries for performance. Integrate shell scripts with relational databases such as Oracle, DB2, MySQL or similar. Monitor scheduled jobs, resolve production incidents and ensure overall batch stability. Conduct root‑cause analysis (RCA) and implement permanent fixes. Enhance performance of scripts, jobs and database queries through continuous tuning. Work closely with stakeholders to gather requirements and translate them into scalable solutions. Participate in Agile ceremonies and collaborate with QA, business and support teams. Create and maintain technical documentation, including design specs, support guides and system documentation. Required Technical Skills Strong hands‑on experience in Mainframe technologies: COBOL, JCL, VSAM, DB2. Solid expertise in Unix/Linux Shell Scripting. Strong SQL and PLSQL skills (procedures, functions, triggers, packages). Experience integrating shell scripts with relational databases. Strong debugging, analytical and problem‑solving skills. Good understanding of batch processing and automation workflows. Ability to work independently and collaboratively within a team. Preferred Good to Have Experience in banking, cards or financial services domains. Experience with ticketing tools and production support processes. Familiarity with Git, CI/CD pipelines or DevOps practices. Knowledge of Python or Java for extended automation or backend integrations. Additional mainframe skills such as CICS, IMS and system administration on DB2, CICS, IMS. REXX scripting for automation and migration tasks. Strong troubleshooting skills for IBM mainframe product related issues. Pay & Benefits The pay range that the employer in good faith reasonably expects to pay for this position is $26.12/hour - $40.81/hour. Benefits include medical, dental, vision and retirement benefits. Applications will be accepted on an ongoing basis. Equal Opportunity Employer Tundra Technical Solutions is an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic. Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Unincorporated LA County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: client‑provided property, including hardware (both of which may include data) entrusted to you from theft, loss or damage; return all portable client computer hardware in your possession (including the data contained therein) upon completion of the assignment, and; maintain the confidentiality of client proprietary, confidential, or non‑public information. In addition, job duties require access to secure and protected client information technology systems and related data security obligations. #J-18808-Ljbffr Capgemini