> Markdown version of [/jobs/ext/4627375-cobol-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/4627375-cobol-mainframe-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # COBOL/Mainframe Developer - **Company:** Indotronix International Corporation - **Location:** Columbus, OH, United States - **Experience:** Experienced - **Contract:** Temporary to permanent - **Skills:** Batch Processing, Big Data, COBOL (Programming Language), Code Review, Information Systems, IBM DB2, Job Control Language (JCL), Mainframes, Oracle (Applications), Performance Tuning, Software Deployment, Virtual Storage Access Methods, Data Processing, Tso/ispf, Scripting, OFSAA (Oracle Financial Services Analytical Applications) Analytical Tools Suite, File-aid, Information Technology, Easytrieve, Software Version Control - **Published:** November 7, 2026 - **Apply:** https://www.careerbuilder.com/job-details/cobol-mainframe-developer-columbus-oh--a35aeec4-65b5-4edc-b8ae-c43076cfd5be ## About the Role Mainframe Computer, Cobol Programming Language, Mainframe Computer, Cobol Programming Language, Consulting, Regulatory Reports, Financial Systems, Data Processing, JCL (Job Control Language), Scripting (Scripting Languages), * Bachelor's degree in Computer Science, Information Systems, or related field. * Minimum 3 years of hands-on experience in COBOL development and mainframe systems. * Proven proficiency in COBOL, JCL, Easytrieve, VSAM, and DB2. * Experienced with File-AID, TSO/ISPF, Abend-AID, and Changeman for version control and deployment. * Skilled in mainframe scheduling tools for job automation and batch processing. * Strong analytical, communication, and problem-solving abilities. * Adept at managing multiple concurrent projects independently. [Preferred Skills] * Experience with Oracle Financial Services Analytical Applications (OFSAA). * Familiarity with ZEKE/ZENA scheduling tools. * Background in finance or financial data structures. * Exposure to financial and regulatory reporting processes. ## Description Job Summary: COBOL/Mainframe Developer (Columbus, OH - Onsite, Contract to Hire), Join a leading financial technology team as a COBOL/Mainframe Developer in Columbus, OH. Drive impactful projects that support critical financial data processing and regulatory reporting initiatives. Collaborate with industry experts in an onsite, dynamic environment where your mainframe skills are essential to our mission. This role offers opportunities for technical growth, project ownership, and exposure to cutting-edge financial systems., * Develop, maintain, and optimize COBOL programs and JCL scripts for large-scale data processing and reporting. * Execute, manage, and troubleshoot batch job execution with JCL. * Analyze complex business requirements and transform them into robust technical solutions. * Collaborate with business partners, analysts, QA, and fellow developers to ensure data accuracy and regulatory compliance. * Lead testing cycles, perform performance tuning, and contribute to code reviews. * Document code changes and maintain clear technical documentation. * Support production deployments and resolve incidents efficiently. * Adhere to established development standards and best practices.