{"id":1122657,"url":"https://alion.io/job/ensono-senior-mainframe-systems-programmer-isv-zos-2","title":"Senior Mainframe Systems Programmer - ISV","company":{"id":3084,"name":"Ensono","domain":"ensono.com","url":"https://alion.io/company/ensono","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":85,"open_postings":11,"ghost_share":0,"stale_share":0.545,"repost_share":0.091,"time_to_fill_p50_days":41,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":85000,"max":148000,"currency":"USD","period":"year","gross":null,"usd_annual":148000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[],"status":"live","first_seen_at":"2026-06-26T15:51:43Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-17T16:39:38Z","board_verified":true,"closed_at":null,"days_open":113,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":112},"description":"We are seeking an experienced ISV z/OS Systems Programmer with strong expertise in the installation, maintenance, troubleshooting, and migration of Independent Software Vendor (ISV) products on the IBM z/OS platform. This role will focus heavily on evaluating, replacing, and migrating software on a mainframe environment with alternative solutions while maintaining operational stability and performance.\nThe ideal candidate will possess deep technical knowledge of mainframe systems programming, SMP/E software management, IBM utilities, and ISV product lifecycle management, along with experience performing product migrations and conversions between competing vendor tools.\nKey Responsibilities\nInstall, configure, maintain, and upgrade third-party ISV software products in a z/OS environment.\nLead initiatives to replace mainframe products with alternative vendor solutions.\nPerform product evaluations, proof-of-concepts, and technical comparisons of replacement tools.\nPlan and execute product migration and conversion activities, including configuration changes, data conversions, and operational cutovers.\nMaintain and manage software using SMP/E, including RECEIVE, APPLY, ACCEPT, USERMODs, and maintenance management.\nTroubleshoot and resolve issues related to ISV software installations, integrations, and runtime problems.\nWork with application teams, operations, and vendors to diagnose system or product issues.\nDevelop and maintain installation documentation, procedures, and migration runbooks.\nAssist in capacity planning, performance tuning, and operational support for ISV tools.\nSupport incident resolution and participate in root cause analysis for production issues involving ISV software.\nEvaluate compatibility and impact of new z/OS releases on installed ISV products.\nRequired Skills and Experience\nExtensive experience as a z/OS Systems Programmer supporting enterprise mainframe environments.\nStrong background in installation and maintenance of ISV mainframe software products.\nHands-on experience with SMP/E software installation and maintenance processes.\nExperience performing product migrations or conversions between competing vendor tools.\nStrong troubleshooting and diagnostic skills across the z/OS platform.\nExperience with IBM utilities and system tools commonly used in z/OS environments.\nHigh-level working knowledge of TSO/ISPF environments and utilities.\nExperience supporting multi-vendor ISV ecosystems in production mainframe environments.\nAbility to analyze system documentation, vendor materials, and product architectures.\nPreferred Qualifications\nExperience specifically replacing ISV mainframe products with alternative vendor solutions.\nFamiliarity with common ISV categories such as:Output management\nSecurity\nScheduling\nStorage management\nPerformance monitoring\nDatabase tools\nAutomation operations\n\nExperience working with vendor support organizations to resolve complex technical issues.\nKnowledge of z/OS system internals, JES, RACF, and subsystem integration.\nExperience with automation, scripting, or operational tooling in the z/OS environment.\nPersonal Attributes\nStrong analytical and problem-solving skills.\nAbility to manage complex migrations and product transitions in production environments.\nExcellent documentation and communication skills.\nSelf-motivated with the ability to work independently or as part of a systems engineering team.\nAbility to work on multiple client projects at the same time\nTypical Deliverables\nISV product installation documentation\nMigration and replacement project plans\nTroubleshooting guides and operational procedures\nProduct comparison and evaluation reports\nMaintenance and upgrade schedules\n Why Ensono?\nEnsono is a place to make better happen - for our clients and for your career. You can do great things through innovation or collaboration, by learning or volunteering, or to promote diversity and inclusion. You can do great things for your own health or for a healthier planet. Whatever it means to you to do great things we want Ensono to be the place you can do it. \nWe are a client-facing business, but we do encourage clients to allow us to work remotely most of the time so if you are not required to be on a client site, you can choose to work from home or in our Ensono offices.\nSome of our benefits include:\nUnlimited Paid Days Off\nThree health plan options\n401k with company match\nEligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts\nFamily Forming Benefit including fertility coverage and adoption/surrogacy reimbursement\nPaid childbearing and paternal leave\nEducation Reimbursement, Student Loan Assistance or 529 College Funding\nSabbatical leave\nWellness program\nFlexible work schedule\nAs of the date of this posting, a good faith estimate of the current pay scale for this role is $85,000 to $148,000 annually based on a full-time schedule. Please note that placement in the range may vary based on numerous factors including but not limited to skills, experience, internal equity, and business needs. In addition to base salary, other compensation programs, depending on eligibility, includean annual bonus plan based on company and individual performance, and an equity grant under our Associate Equity Appreciation Program.\nEnsono is an Equal Opportunity/Affirmative Action employer. We are committed to providing equal employment to our Associates and building a diverse and inclusive workforce. All qualified applicants will be considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, or other legally protected basis, in accordance with applicable law.\nPay transparency nondiscrimination statement/posting OFCCP’s pay transparency policy can be found on OFCCP’s website.\nIf you need accommodation at any point during the application or interview process, please let your recruiter know or email .","description_format":"text","description_chars":6011,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["401k plan","Equity","Flexible schedule"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Technology","Managed IT Services (MSP)","Cloud Consulting & Migration"],"lifecycle":[{"event":"open","at":"2026-09-22T19:44:12Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 30 · green card filings: 2","filings_12m":30,"filings_prev_12m":21,"green_card_filings_12m":2,"median_offered_wage_usd":141563,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":14}],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.326,"p_room":0.28,"age_days":112,"expected_fill_days":41,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":148000,"is_top_pay":true},"html_url":"https://alion.io/job/ensono-senior-mainframe-systems-programmer-isv-zos-2","json_url":"https://alion.io/job/ensono-senior-mainframe-systems-programmer-isv-zos-2.json","meta":{"generated_at":"2026-10-17T18:22:10Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":1070,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3084},"rest":"https://alion.io/mcp/rest/get_company?id=3084"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fensono-senior-mainframe-systems-programmer-isv-zos-2"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fensono-senior-mainframe-systems-programmer-isv-zos-2"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fensono-senior-mainframe-systems-programmer-isv-zos-2"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/ensono-senior-mainframe-systems-programmer-isv-zos-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fensono-senior-mainframe-systems-programmer-isv-zos-2"}]}