{"id":3525028,"url":"https://alion.io/job/novalink-solutions-llc-mainframe-developer","title":"Mainframe Developer","company":{"id":4449854,"name":"Novalink Solutions","domain":"novalink-solutions.com","url":"https://alion.io/company/novalink-solutions-llc","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Zoho Recruit","truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Columbia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":169000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":737},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"COBOL","optional":false},{"name":"JCL","optional":false},{"name":"TSO/ISPF","optional":false},{"name":"VSAM","optional":false},{"name":"IBM MQ","optional":true},{"name":"Java","optional":true},{"name":"Python","optional":true},{"name":"z/OS Connect","optional":true}],"status":"live","first_seen_at":"2026-10-30T13:44:33Z","employer_posted_date":"2026-10-30","last_verified_at":"2026-11-02T17:57:35Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Mainframe Developer - Composite Reservoir Accounts \nOffice of the State Treasurer\nBuild a new pooled-account structure inside a running z/OS core, without disturbing the balances already on it.\nAbout The Role\nWe are adding new composite reservoir accounts to our existing mainframe accounting platform: a pooled account structure in which balances from multiple subsidiary accounts are concentrated into, and drawn back from, a single reservoir account under defined sweep and allocation rules.\nThis is additional function inside a legacy system. You will be reading a large body of COBOL that has been in production for an extended period, much of it lightly documented, and extending it so that the new account type posts, settles, accrues, reports, and reconciles exactly as the existing types do. Correctness and traceability of every cent matter more than speed of delivery.\nWhat You Will Do\nAnalyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.\nDesign and code the new account type end to end: master file and table structures, account opening and closing, participant linkage, sweep and reverse-sweep logic, allocation and interest apportionment, and closing balance derivation.\nModify batch COBOL programs and JCL and extend the nightly and month-end cycles to include the new processing without lengthening the batch window beyond agreed limits.\nAdd new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.\nProduce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.\nSupport implementation, conversion of any in-scope existing accounts, and early-life production runs, including on-call cover during the first cycles.\nLeave behind program documentation, data-flow notes, and runbook updates that the support team can work from.\nRequired Skills\n5+ years of Enterprise COBOL development experience in a z/OS environment\n5+ Years of Experience with NaturalOne\n3+ years of JCL development and production support experience\n3+ years of experience with financial/accounting systems development or support including double-entry posting, balance/accrual maintenance, value dating, reconciliation, and month-end closeouts in a regulated environment\n3+ years of experience working with Adabas and VSAM\n3+ years of experience with tracing undocumented logic through copybooks, call chains, and job streams\nThese are the skills we expect to see evidence of in the first conversation.\nCOBOL - substantial production experience in Enterprise COBOL on z/OS, both batch and online; comfortable extending large existing programs and reading code you did not write.\nNaturalOne - the Eclipse-based Software AG development environment; developing, debugging, and deploying Natural applications from it, including local development and remote z/OS projects.\nNatural and Adabas - Natural programs, subprograms, and maps; DDMs, descriptors and superdescriptors, and Adabas file design and performance behavior.\nz/OS and JCL - writing and debugging JCL, procs, GDGs, utilities, SORT, and restart/rerun handling; fluent in TSO/ISPF.\nMainframe data stores - VSAM file design and access, and Adabas for z/OS.\nFinancial accounting logic - double-entry posting, balance and accrual maintenance, value dating, reconciliation, and month-end close in a regulated environment.\nAnalysis of legacy systems - tracing undocumented logic through copybooks, call chains, and job streams, and stating clearly what a change will and will not affect.\nPreferred Skills\nExperience with cash management, account pooling, sweeps, or treasury applications\nExperience with CA-7 scheduling and batch operations\nExperience with REXX, Python, or Java\nNot required to apply. Each of these will shorten your ramp-up, and we will support you in learning the ones you do not have.\nMixed-estate integration - calling between COBOL and Natural, and exposing mainframe function through z/OS Connect, IBM MQ, or REST services.\nScheduling and operations - CA-7 batch window analysis and performance tuning.\nScripting and adjacent languages - REXX or CLIST for tooling, plus Java or Python for data comparison and migration work.\nCash management domain - notional and physical pooling, cash concentration, sweeps, and intercompany allocation.\nAdditional Skills\nTrack record of taking a specification from analysis through production implementation with limited supervision.\nClear written communication: you can explain a change to an auditor, a business analyst, and another developer, and adjust the explanation for each.\nDegree in computer science or a related field, or equivalent practical experience.\nHow We Work\nProduction changes follow formal change control with peer review and a signed-off implementation plan.\nRequirements\nRequired Skills\nSkill Type\nSkill Name\n\n5+ years of Enterprise COBOL development experience in a z/OS environment\n\n5+ Years of Experience with NaturalOne\n\n5+ years of JCL development and production support experience\n\n3+ years of experience with financial/accounting systems development or support including double-entry posting, balance/accrual maintenance, value dating, reconciliation, and month-end closeouts in a regulated environment\n\n3+ years of experience working with Adabas and VSAM\n\n3+ years of experience with tracing undocumented logic through copybooks, call chains, and job streams\nPreferred Skills\nSkill Type\nSkill Name\n\nExperience with cash management, account pooling, sweeps, or treasury applications\n\nExperience with CA-7 scheduling and batch operations\n\nExperience with REXX, Python, or 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