{"id":3592505,"url":"https://alion.io/job/signature-it-world-java-mainframe-developer","title":"Java Mainframe Developer","company":{"id":3912428,"name":"Signature IT World","domain":"sitwinc.com","url":"https://alion.io/company/signature-it-world","size_band":null,"is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chicago, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":82000,"max_usd":177000,"period":"year","method":"role_country_seniority_unknown","sample_n":2118},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CICS","optional":false},{"name":"COBOL","optional":false},{"name":"Db2","optional":false},{"name":"Java","optional":false},{"name":"JCL","optional":false},{"name":"SQL","optional":false},{"name":"VSAM","optional":false}],"status":"closed","first_seen_at":"2026-11-01T19:42:42Z","employer_posted_date":null,"last_verified_at":"2026-11-02T03:20:30Z","board_verified":false,"closed_at":"2026-11-02T03:20:30Z","days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Signature IT World Inc is seeking an experienced Java Mainframe Developer to develop, maintain, and support enterprise mainframe applications. The role focuses on COBOL, JCL, DB2, CICS, and VSAM, translating business requirements into reliable technical solutions and supporting production systems.\n\nResponsibilities\nDevelop, enhance, and maintain COBOL mainframe applications supporting critical business processes\nDesign, develop, and optimize JCL jobs for batch processing and scheduling\nDevelop and maintain DB2 database programs, including SQL queries, data retrieval, performance tuning, and optimization\nDevelop and support CICS online programs for real-time transaction processing\nWork with VSAM files for data storage, access, and file management\nAnalyze business and functional requirements and translate them into technical solutions\nPerform application debugging, troubleshooting, and root-cause analysis\nOptimize existing programs and batch processes for performance and reliability\nParticipate in application testing, deployment, and production support activities\nCollaborate with business analysts, technical teams, and other stakeholders\nPrepare technical documentation and support knowledge-transfer activities\nEnsure developed solutions meet enterprise coding and quality standards\n\nSkills\n10+ years of experience in Mainframe development\nStrong hands-on experience with COBOL, JCL, DB2, CICS, and VSAM\nStrong SQL and database development experience\nExperience with both batch and online transaction processing\nAbility to understand business requirements and provide techno-functional solutions\nStrong troubleshooting and problem-solving skills\nGood communication and stakeholder collaboration skills\nJava\nSpring Boot\nMicroservices\nKafka\nAzure\nFull Stack Java\n\nCompany Overview\nOur Mission is to provide our customers with services and solutions to optimize their information systems throughout their company and provide the best possible service to our employees. It was founded in undefined, and is headquartered in Frisco, Texas, US, with a workforce of 201-500 employees. Its website is https://www.sitwinc.com.\n\nCompany H1B Sponsorship\nSignature IT World Inc has a track record of offering H1B sponsorships, with 3 in 2026, 11 in 2025, 5 in 2024, 5 in 2023, 21 in 2022, 14 in 2021. 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