Mainframe Developer

Location: 4910 Tiedeman Road, Brooklyn Ohio We are seeking an experienced Mainframe Application Developer with strong expertise in IBM z/OS environments. The ideal candidate will be responsible for designing, developing, maintaining, and supporting mainframe applications, ensuring reliability, performance, and scalability of business‑critical systems. Key Responsibilities Design, develop, test, and maintain applications on IBM Mainframe (z/OS platform). Develop and maintain programs using COBOL, JCL, and DB2 (including Stored Procedures) . Work with VSAM datasets , file handling, and performance optimization. Manage and support batch processing schedules using Tivoli Workload Scheduler (TWS) . Perform code management and version control using LCM (or similar tools) . Utilize SORT utilities for data manipulation and processing. Develop and support online and batch applications using CICS . Integrate systems using MQ (IBM WebSphere MQ) for messaging solutions. Participate in incident management, problem resolution, and production support . Collaborate with cross‑functional teams to deliver high‑quality solutions. Ensure adherence to coding standards, security practices, and compliance guidelines. Education Bachelor's Degree or equivalent experience (preferred) Work Experience 5+ years of relevant experience (required) Required Skills Strong hands‑on experience in: IBM Mainframe z/OS COBOL programming DB2 and Stored Procedures JCL (Job Control Language) VSAM CICS MQ (Messaging) SORT utilities Tivoli Workload Scheduler (TWS) Code management tools (LCM or equivalent) Knowledge or exposure to ZWDYL Strong debugging, problem‑solving, and analytical skills Core Competencies All KeyBank employees are expected to demonstrate Key's Values and abide by Key's Code of Conduct. Physical Demands General Office - Prolonged sitting, ability to communicate face to face in person or on the phone with teammates and clients, frequent use of PC/laptop, occasional lifting/pushing/pulling of backpacks, computer bags up to 10 lbs. Work Location Category Hybrid (2+ days) COMPENSATION AND BENEFITS This position is eligible to earn a base salary in the range of $80,000.00 - $150,000.00 annually. Placement within the pay range may differ based upon various factors, including but not limited to skills, experience and geographic location. Compensation for this role also includes eligibility for incentive compensation which may include production, commission, and/or discretionary incentives. Please click here for a list of benefits for which this position is eligible. Key has implemented an approach to employee workspaces which prioritizes in‑office presence, while providing flexible options in circumstances where roles can be performed effectively in a mobile environment. Job Posting Expiration Date: 08/10/2026 KeyCorp is an Equal Opportunity Employer committed to sustaining an inclusive culture. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, genetic information, pregnancy, disability, veteran status or any other characteristic protected by law. Qualified individuals with disabilities or disabled veterans who are unable or limited in their ability to apply on this site may request reasonable accommodations by emailing View email address on click.appcast.io. #J-18808-Ljbffr