{"schemaVersion":"jobsearcher.job.v1","id":"295b3f933d308a49dc9d0052","url":"https://jobsearcher.com/jobs/295b3f933d308a49dc9d0052","canonicalUrl":"https://jobsearcher.com/jobs/295b3f933d308a49dc9d0052","title":"Lead Mainframe Developer","description":"Lead Mainframe Developer\r\nLocation: Indianapolis, IN / Plano, TX / Boston, MA / Portsmouth, NH / Seattle, WA – onsite / Hybrid (as per client requirement)\r\nExperience Required: 5–8 Years (Strictly Development – No Production Support Profiles)\r\nJob Summary We are seeking a highly skilled Lead Mainframe Developer with strong hands-on experience in IBM Mainframe technologies including COBOL, JCL, IMS DB, DB2, MQ Series, and Xpeditor. The ideal candidate is a true developer (not production support), capable of designing, coding, testing, and delivering robust mainframe applications. This role requires strong analytical ability, excellent communication, and a proactive mindset.\r\nKey Responsibilities\r\nApplication Development\r\nDesign, develop, code, test, and maintain mainframe applications.\r\nPerform detailed unit, integration, and contract-level testing.\r\nPeer-review code, technical design documents, and provide improvement feedback.\r\nAssist QA teams with test execution, defect analysis, and validation.\r\nIssue Resolution & Support\r\nParticipate in on-call rotation to resolve application failures.\r\nTroubleshoot system performance issues and collaborate with infra/support teams.\r\nAnalyze and resolve issues related to business data processing.\r\nProvide root-cause analysis and implement permanent fixes.\r\nSystem Monitoring & Performance\r\nMonitor application and batch job performance.\r\nCollaborate with respective support teams to resolve software and hardware issues.\r\nEnsure stability, reliability, and high availability of mainframe applications.\r\nCollaboration & Leadership\r\nLead discussions in virtual and cross-functional environments.\r\nAsk the right questions, provide recommendations, and drive improvements.\r\nMentor junior developers when needed and support team maturity.\r\nRequired Technical Skills\r\nIBM Mainframe Technologies: COBOL, JCL, IMS DB, DB2\r\nTools & Utilities: MQ Series, Xpeditor\r\nStrong mainframe debugging and performance-tuning skills\r\nHands-on experience writing & reviewing complex COBOL and JCL code\r\nStrong testing experience: Unit, Integration, Contract-level testing\r\nWorking knowledge of Spring Boot (basic understanding is sufficient)\r\nWorking knowledge of Git for version control\r\nTech One IT\r\nJ-18808-Ljbffr","company":"Tech One It","rawCompany":"tech one it","city":"New York","state":"NY","isRemote":false,"isActive":false,"createdAt":"2026-04-09T09:10:37.561Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Lead Mainframe Developer","description":"Lead Mainframe Developer\r\nLocation: Indianapolis, IN / Plano, TX / Boston, MA / Portsmouth, NH / Seattle, WA – onsite / Hybrid (as per client requirement)\r\nExperience Required: 5–8 Years (Strictly Development – No Production Support Profiles)\r\nJob Summary We are seeking a highly skilled Lead Mainframe Developer with strong hands-on experience in IBM Mainframe technologies including COBOL, JCL, IMS DB, DB2, MQ Series, and Xpeditor. The ideal candidate is a true developer (not production support), capable of designing, coding, testing, and delivering robust mainframe applications. This role requires strong analytical ability, excellent communication, and a proactive mindset.\r\nKey Responsibilities\r\nApplication Development\r\nDesign, develop, code, test, and maintain mainframe applications.\r\nPerform detailed unit, integration, and contract-level testing.\r\nPeer-review code, technical design documents, and provide improvement feedback.\r\nAssist QA teams with test execution, defect analysis, and validation.\r\nIssue Resolution & Support\r\nParticipate in on-call rotation to resolve application failures.\r\nTroubleshoot system performance issues and collaborate with infra/support teams.\r\nAnalyze and resolve issues related to business data processing.\r\nProvide root-cause analysis and implement permanent fixes.\r\nSystem Monitoring & Performance\r\nMonitor application and batch job performance.\r\nCollaborate with respective support teams to resolve software and hardware issues.\r\nEnsure stability, reliability, and high availability of mainframe applications.\r\nCollaboration & Leadership\r\nLead discussions in virtual and cross-functional environments.\r\nAsk the right questions, provide recommendations, and drive improvements.\r\nMentor junior developers when needed and support team maturity.\r\nRequired Technical Skills\r\nIBM Mainframe Technologies: COBOL, JCL, IMS DB, DB2\r\nTools & Utilities: MQ Series, Xpeditor\r\nStrong mainframe debugging and performance-tuning skills\r\nHands-on experience writing & reviewing complex COBOL and JCL code\r\nStrong testing experience: Unit, Integration, Contract-level testing\r\nWorking knowledge of Spring Boot (basic understanding is sufficient)\r\nWorking knowledge of Git for version control\r\nTech One IT\r\nJ-18808-Ljbffr","datePosted":"2026-04-09T09:10:37.561Z","dateModified":"2026-04-09T09:10:37.561Z","hiringOrganization":{"@type":"Organization","name":"Tech One It","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"New York","addressRegion":"NY","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"295b3f933d308a49dc9d0052"},"url":"https://jobsearcher.com/jobs/295b3f933d308a49dc9d0052"}}