Referso Jobs

Mainframe Developer

Talent Software Services, Inc. · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract
5+ years

Apply with Referso

Mainframe Developer

Talent Software Services, Inc. · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract
5+ years

Apply with Referso

Programmer - Advanced - Mainframe Developer - Composite Reservoir Accounts

Omega Solutions · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract · Senior
Max Bill Rate: ***/hour
5+ years

Apply with RefersoAI Apply on careers page

Build a new pooled-account structure inside a running z/OS core, without disturbing the balances already on it.

Responsibilities

Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.
Design 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.
Modify 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.
Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.
Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.

Requirements

Degree in computer science or a related field, or equivalent practical experience
Nice to have: cash management
Nice to have: account pooling
Nice to have: sweeps
Nice to have: treasury applications

Skills

Enterprise COBOL development

IT - STO - Programmer - Advanced - Mainframe Developer - Composite Reservoir Accounts

Abacus Service Corporation · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract · Staff
5+ years

Apply with RefersoAI Apply on careers page

Build a new pooled-account structure inside a running z/OS core, without disturbing the balances already on it.

Responsibilities

Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.
Design 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.
Modify 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.
Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.
Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.

Requirements

Bachelor's Degree
Nice to have: cash management, account pooling, sweeps, or treasury applications
Nice to have: CA-7 scheduling and batch operations
Nice to have: REXX
Nice to have: Python

Skills

Enterprise COBOL development in a z/OS environment

Advanced Mainframe Developer – Composite Reservoir Accounts

Zencon Group · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract
5+ years

Apply with RefersoAI Apply on careers page

Senior Mainframe Developer with 5+ years of Enterprise COBOL and NaturalOne experience, responsible for designing and implementing composite reservoir account structures and supporting related batch processes.

Responsibilities

Analyze and document existing account master, posting, and balance‑maintenance programs for composite reservoir accounts
Design and implement a pooled account structure for fund transfers between subsidiary and reservoir accounts
Develop master file and table structures, account opening/closing processes, and allocation rules
Integrate new account type into posting, settlement, accrual, reporting, and reconciliation processes
Create test data and regression test suites, compare parallel‑run results with production output

Requirements

Degree in computer science or related field
Nice to have: Treasury or cash management applications
Nice to have: CA-7 scheduling
Nice to have: REXX or CLIST
Nice to have: Python

Skills

Enterprise COBOL z/OS NaturalOne JCL TSO/ISPF

Mainframe Developer

InterSources Inc. · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract · Mid
5+ years

Apply with RefersoAI Apply on careers page

Mainframe Developer focused on Composite Reservoir Accounts.

Responsibilities

Analyze existing COBOL account master, posting, and balance-maintenance programs to identify changes required for Composite Reservoir Accounts.
Design, develop, and implement Composite Reservoir Account structures, including master account files, subsidiary account relationships, participant linkage, and account opening/closing functionality.
Develop sweep and reverse-sweep processing logic to transfer and allocate funds between reservoir accounts and participating subsidiary accounts.
Enhance financial accounting applications supporting double-entry posting, balance maintenance, interest accrual calculations, value dating, and reconciliation.
Modify existing Enterprise COBOL batch programs and JCL job streams to incorporate new processing within nightly and month-end accounting cycles.

Requirements

Nice to have: cash management
Nice to have: account pooling
Nice to have: sweeps
Nice to have: treasury applications
Nice to have: CA-7 scheduling

Skills

Enterprise COBOL z/OS NaturalOne

Mainframe Developer - Composite Reservoir Accounts

DP Professionals · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract · Mid
5+ years

Apply with RefersoAI Apply on careers page

Adding new composite reservoir accounts to an existing mainframe accounting platform, involving reading and extending legacy COBOL code.

Responsibilities

Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.
Design 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.
Modify 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.
Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.
Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.

Requirements

Degree in computer science or a related field, or equivalent practical experience
Nice to have: cash management
Nice to have: account pooling
Nice to have: sweeps
Nice to have: treasury applications

Skills

COBOL

Senior Mainframe COBOL Developer

US Tech Solutions, Inc. · Posted Nov 13, 2026

Open

Remote, United States
Remote
Contract · Senior
5+ years

Apply with RefersoAI Apply on careers page

Design and code a new composite reservoir account type within an existing mainframe accounting platform, extending legacy COBOL programs to handle posting, settlement, accrual, reporting, and reconciliation.

Responsibilities

Analyze current account master, posting, and balance-maintenance programs
Design and code the new account type end to end
Modify batch COBOL programs and JCL to include new processing
Add new CRAs to the audit trail, exception reporting, and reconciliation controls
Produce test data, unit and regression test packs, and parallel-run comparisons

Requirements

Degree in computer science or a related field, or equivalent practical experience
Nice to have: Cash management
Nice to have: Account pooling
Nice to have: Sweeps
Nice to have: Treasury applications

Skills

Enterprise COBOL z/OS NaturalOne JCL Adabas VSAM Financial accounting logic

Programmer - Advanced - Mainframe Developer - Composite Reservoir Accounts

Intellectual Capitol · Posted Nov 13, 2026

Open

Remote, United States
Remote
5+ years

Apply with RefersoAI Apply on careers page

Responsibilities

Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.
Design 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.
Modify 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.
Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.
Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.

Requirements

Computer Science degree or related field
Nice to have: cash management
Nice to have: account pooling
Nice to have: sweeps
Nice to have: treasury applications

Skills

Enterprise COBOL NaturalOne

Programmer - Advanced - Mainframe Developer - Composite Reservoir Accounts

Globalpundits, Inc · Posted Nov 13, 2026

Open

Columbia, South Carolina, United States
On-site
Full-time · Senior
5+ years

Apply with RefersoAI Apply on careers page

Build a new pooled-account structure inside a running z/OS core, without disturbing the balances already on it.

Responsibilities

Analyze the current account master, posting, and balance-maintenance programs to establish where composite reservoir accounts must be recognized, and document what you find.
Design 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.
Modify 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.
Add new CRAs to the audit trail, exception reporting, and reconciliation controls the new function requires, working with accounting stakeholders on what must be evidenced.
Produce test data, unit and regression test packs, and parallel-run comparisons against current production output; investigate every difference until it is explained.

Requirements

Degree in computer science or a related field, or equivalent practical experience
Nice to have: Cash management
Nice to have: Account pooling
Nice to have: Sweeps
Nice to have: Treasury applications

Skills

Enterprise COBOL

Adabas Natural Analyst Programmer

powerdatagroup · Posted Nov 11, 2026

Open

Remote
Remote

Apply with RefersoAI Apply on careers page

We are seeking an experienced Adabas Natural Analyst Programmer to support the development, enhancement and modernization of enterprise payroll and HR systems within a large and complex ICT environment.

Responsibilities

Develop and maintain applications using Adabas Natural on IBM Mainframe platforms.
Analyse business requirements and prepare technical designs.
Support payroll, HR and enterprise business systems.
Develop APIs, web services and integration solutions.
Perform testing, defect resolution and production support.

Requirements

Nice to have: Payroll, HR or Finance system experience
Nice to have: Government or large enterprise environments
Nice to have: Relevant ICT qualifications or certifications

Skills

Strong experience with Adabas Natural and IBM Mainframe environments Experience with NaturalONE/SPoD, JCL, TSO, and Natural Web Services Systems analysis, solution design and technical documentation skills Experience with Agile and/or Waterfall delivery methodologies

NaturalOne jobs

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills

Responsibilities

Requirements

Skills