Mainframe Developer

Job Role: Mainframe DeveloperLocation: Boston, MA (Hybrid - 3 Day in a week)Job Type: Full-time RoleJob Description:We are seeking an experienced Mainframe Engineer to design, develop, and lead complex stock plan services applications on IBM Z/OS in an Agile environment.ResponsibilitiesGather requirements, design, develop, test, and support mainframe applications for stock plan/brokerage systems.Lead technical design, architecture, and implementation while ensuring scalability, extensibility, and adherence to standards.Perform performance tuning and capacity planning (reduce I/O, CPU time, MSUs, MIPS) using tools such as Strobe, iStrobe, Platinum Detector.Use mainframe tools: COBOL, CICS, DB2, JCL, VSAM, MQ-Series, SQL, plus File-AID, Endeavor, Intertest, Abend-AID, Control-M.Provide on-site/on-call support, act as SME in incident/crisis management, and ensure QA readiness of deliverables.Collaborate with business, QA, and multiple management layers; lead Agile ceremonies and mentor team members.Own project planning, scheduling, risk assessment, documentation, and on-time/on-budget delivery.Required Skills & ExperienceBachelor’s degree in CS/Engineering/IT/IS/Math/Physics (or equivalent) + 5+ years of mainframe development/technical lead experience in brokerage or stock plan services systemsORMaster’s degree in a related field + 3+ years of equivalent experience.Strong hands-on expertise in COBOL, CICS, DB2, JCL, VSAM, MQ, SQL.Proven experience in mainframe performance tuning, capacity planning, and production support.Experience working in Agile teams with end-to-end SDLC ownership.