{"id":3959692,"url":"https://alion.io/job/weekday-senior-mainframe-developer","title":"Senior Mainframe Developer","company":{"id":7097,"name":"Weekday","domain":"weekday.works","url":"https://alion.io/company/weekday","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":81,"open_postings":100,"ghost_share":0,"stale_share":0.98,"repost_share":0,"time_to_fill_p50_days":6,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Gurgaon, India","Delhi, India","Noida, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":1000000,"max":1500000,"currency":"INR","period":"year","gross":null,"usd_annual":16154},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"COBOL","optional":false},{"name":"Db2","optional":false},{"name":"File-AID","optional":false},{"name":"IMS","optional":false},{"name":"JCL","optional":false},{"name":"SAS","optional":false},{"name":"TSO/ISPF","optional":false}],"status":"live","first_seen_at":"2026-11-09T10:49:37Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T10:49:37Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"This role is for one of Weekday’s clients\nSalary range: Rs 1000000 - Rs 1500000 (ie INR 10 - 15 LPA)\nMin Experience: 5+ years\nLocation: Local to NCR, Immediate Joiner (Serving Notice Only)\nJobType: full-time\nWe are seeking an experienced Senior Mainframe Developer with 5+ years of hands-on experience in mainframe application development, system analysis, design, and maintenance. The ideal candidate will have strong technical expertise in COBOL, IMS, JCL, and DB2, along with practical experience in analysing and enhancing legacy systems.\nThe role involves understanding business requirements, performing technical analysis and reverse engineering, designing and developing mainframe components, and ensuring the quality and reliability of enterprise applications through effective testing and maintenance.\nRequirements\nKey Responsibilities\nRequirement Analysis: Analyse business requirements for new initiatives, system enhancements, and modifications to existing mainframe applications.\nSystem Design and Development: Participate in system design, development, and implementation of mainframe modules based on project requirements.\nTechnical Analysis and Reverse Engineering: Analyse existing mainframe code, applications, and data structures to understand system functionality and identify opportunities for improvement.\nApplication Maintenance: Maintain, troubleshoot, and enhance existing mainframe applications while ensuring performance, quality, and operational efficiency.\nTesting and Quality Assurance: Perform unit testing, validate application functionality, identify defects, and ensure solutions meet technical and business requirements.\nMainframe Utilities: Work with relevant mainframe tools and utilities to support development, debugging, data analysis, and application maintenance.\nProcess Documentation: Contribute to technical documentation and continuously improve development lifecycle processes.\nPost-Implementation Support: Participate in post-implementation reviews, resolve technical issues, and share best practices and technical knowledge.\nStakeholder Collaboration: Coordinate with cross-functional technical teams and business stakeholders, communicating project updates, technical designs, dependencies, and issues effectively.\nRequired Skills and Qualifications\n5+ years of hands-on experience in Mainframe Development.\nStrong expertise in COBOL, IMS, JCL, and DB2.\nExperience working with mainframe tools and utilities, including:\nMQ Series\nFile-AID\nSPUFI\nISPF\nSAS\nStrong understanding of mainframe application architecture and development processes.\nExperience in requirement analysis, system design, application development, and unit testing.\nAbility to analyse existing code and troubleshoot complex technical issues.\nStrong analytical, problem-solving, and debugging skills.\nAbility to collaborate effectively with technical teams and business stakeholders.\nGood written and verbal communication and interpersonal skills.\nMust-Have Skills\nDB2\nCOBOL\nGood-to-Have Skills\nPL/I (PL1)\nIDz\nADDI\nPreferred Qualifications\nWorking knowledge of PL/I programming along with DB2 and IMS.\nFamiliarity with IBM Developer for z Systems (IDz) and Application Discovery and Delivery Intelligence (ADDI) tools.\nExperience in reverse engineering, analysing, and maintaining legacy mainframe 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