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Mainframe Conversion Developer Jobs (NOW HIRING)

Amtex Enterprises Inc

Mainframe Developer

Trenton, NJ · On-site

$49.25 - $63.25/hr

Mainframe Developer Location: Trenton, NJ 08608- Hybrid Role (2 days Onsite, 3 days Remote ... Participate in database conversion and modernization efforts as needed * Work under the direction ...

Mastech Digital

Mainframe Developer

Merrimack, NH · Remote

$65/hr

Duration: 12+ Months Contract (possible extension/ conversion) Location: Merrimack, New Hampshire ... The Mainframe Developer must have 2-10+ years of experience. Top Skills: - COBOL, CICS - AWS ...

Mastech Digital

Mainframe Developer

Merrimack, NH · On-site

$65/hr

Duration: 12+ Months Contract (possible extension/ conversion) Location: Merrimack, New Hampshire ... The Mainframe Developer must have 2-10+ years of experience. Top Skills: - COBOL, CICS - AWS ...

Damco Solutions

Senior Mainframe Developer

Raleigh, NC · On-site

Damco Solutions is seeking a Senior Mainframe Developer to support multiple efforts in NC FAST and ... Responsibilities : • Lead data conversion efforts and implement application enhancements based on ...

Jobtailor

Mainframe Architect

Albany, NY · On-site

... Support conversion of legacy mainframe systems to new technology platforms Develop and maintain ... Minimum 7 years of COBOL programming experience in an IBM mainframe environment * Minimum 3 years ...

nLeague

Mainframe Systems Programer

Hartford, CT · On-site

$55.50 - $70.50/hr

... Developer Location: Hybrid- 55 Farmington Avenue Hartford, Connecticut Client: CT DSS Duration: 06 ... Create, modify, and support JCL required for data extracts, file transfers, conversion processing ...

Apex Systems

$70/hr

... to Hire - conversion contingent on performance Role Overview We are seeking an experienced ... The ideal candidate will possess experience in COBOL programming, JCL, and DB2 within mainframe ...

Apex Systems

COBOL/Mainframe Developer

Columbus, OH · On-site

$70/hr

... to Hire - conversion contingent on performance Role Overview We are seeking an experienced ... The ideal candidate will possess experience in COBOL programming, JCL, and DB2 within mainframe ...

Comcentric

Mainframe Operator

Pontiac, MI · On-site

$48.75 - $62.50/hr

Mainframe Operator We are seeking a Mainframe Operator in Pontiac, MI for a 1+ Year Contract (Potential for Conversion). Job Summary: The Mainframe Operator functions as a Level 1 Incident Manager ...

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Mainframe Conversion Developer information

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How much do mainframe conversion developer jobs pay per hour?

As of Sep 15, 2026, the average hourly pay for mainframe conversion developer in the United States is $53.38, according to ZipRecruiter salary data. Most workers in this role earn between $47.12 and $60.58 per hour, depending on experience, location, and employer.

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For Mainframe Conversion Developer jobs, the most frequently searched job titles are:

Infographic showing various Mainframe Conversion Developer job openings in the United States as of June 2026, with employment types broken down into 94% Full Time, and 6% Contract. Highlights an 83% Physical, 6% Hybrid, and 11% Remote job distribution, with an average salary of $111,026 per year, or $53.4 per hour.

Mainframe Data Conversion Developer

Jefferson City, MO • On-site

RICEFW Technologies, Inc.
IT Services • 51 - 200 employees
Learn more about RICEFW Technologies, Inc.external

$46.50 - $59.75/hr

Contractor

Posted 12 days ago

Job description

Position Overview
We are seeking an experienced Mainframe/Data Conversion Developer to support the SAMII to MOVERS Database Conversion Project. The selected resource will be responsible for converting financial, HR, and payroll-related data from the legacy Missouri SAMII DB2 environment into the MOVERS Oracle database based on data mapping templates and conversion requirements provided by the MOVERS project team and Subject Matter Experts (SMEs).
The ideal candidate will have extensive experience with JCL, COBOL, DB2 z/OS, SQL, data conversion, and Quality Assurance testing, preferably within a state government financial, HR, or payroll ERP environment.
This position requires strong technical analysis skills, attention to data quality and nuances, and the ability to work effectively with both technical teams and business stakeholders.
Required Experience and Qualifications
Candidates must have experience working with financial, HR, and payroll ERP systems at a state government or equivalent organizational level.
Technical Experience
Minimum 7+ years of experience with the following:
  • JCL (Job Control Language)
  • DB2 for z/OS, including database performance knowledge and optimization
  • SQL
  • COBOL

Minimum 5+ years of experience in:
  • Quality Assurance Testing
  • Data validation and reconciliation
  • Testing complex data conversion or migration processes

Required Skills
The successful candidate must demonstrate:
  • Experience working with complex and ambiguous technical and business scenarios
  • Strong ability to analyze and resolve data conversion issues
  • Experience communicating effectively with business partners, SMEs, developers, testers, and project stakeholders
  • Ability to identify, analyze, and clearly discuss data nuances, anomalies, dependencies, and discrepancies
  • Strong troubleshooting and problem-solving skills
  • Experience interpreting source-to-target data mapping specifications
  • Ability to validate converted data against business and technical requirements
  • Strong documentation skills
  • Ability to manage assigned work independently while collaborating with a larger project team

Preferred Skills
The following experience is strongly preferred:
  • Accounting knowledge
  • Payroll knowledge
  • Previous experience supporting Missouri SAMII
  • Experience with financial and accounting data conversion
  • Experience with HR and payroll data conversion
  • Experience migrating data from DB2/Mainframe environments to Oracle
  • Experience working on large-scale government ERP modernization or system replacement projects
  • Familiarity with Oracle database structures and data requirements

Key Responsibilities
The selected resource will:
  • Convert DB2 data from the Missouri SAMII system to MOVERS Oracle requirements.
  • Perform data conversion activities according to mapping templates and specifications provided by MOVERS project team SMEs.
  • Analyze existing SAMII DB2 data structures, business rules, and data relationships.
  • Develop and maintain COBOL, JCL, SQL, and DB2-based programs/processes required to extract, transform, validate, and prepare data for conversion.
  • Review source-to-target mapping documents and translate business requirements into technical conversion logic.
  • Identify data anomalies, exceptions, inconsistencies, and other nuances that could impact conversion.
  • Collaborate with MOVERS project SMEs and business partners to clarify mapping requirements and resolve data-related questions.
  • Perform data reconciliation and validation to ensure converted data is complete, accurate, and aligned with MOVERS Oracle requirements.
  • Conduct and support Quality Assurance testing of conversion processes and converted data.
  • Troubleshoot conversion failures, data discrepancies, performance issues, and technical defects.
  • Optimize DB2 queries and conversion processes when necessary to support performance requirements.
  • Participate in conversion testing cycles, defect resolution, and production conversion activities.
  • Maintain clear technical documentation for conversion programs, mappings, testing results, issues, and resolutions.

JIRA and Documentation Requirements
JIRA will be used to manage tasks, issues, defects, and project assignments.
The resource will be responsible for:
  • Reviewing and completing assigned tasks through JIRA
  • Entering and tracking issues within JIRA
  • Providing timely status updates for assigned work
  • Documenting technical analysis, changes, testing activities, and resolutions
  • Recording all implemented changes as comments within the applicable JIRA ticket for each assigned task
  • Working with project team members to resolve JIRA issues and defects through completion

Ideal Candidate Profile
The ideal candidate is a senior-level mainframe and database professional who has supported complex ERP environments involving financial, accounting, HR, and payroll data. The candidate should be comfortable working with legacy mainframe systems while supporting a large-scale migration to a modern Oracle-based application.
Prior experience with Missouri SAMII and familiarity with its financial and payroll data structures would be a significant advantage.
Mandatory Skills Summary
Skill / Experience
Requirement
JCL
7+ years
DB2 z/OS
7+ years
DB2 Performance Knowledge
7+ years preferred within DB2 experience
SQL
7+ years
COBOL
7+ years
Quality Assurance Testing
5+ years
Financial/HR/Payroll ERP Experience
Required
State Government or Equivalent Enterprise Experience
Required
Complex Data Conversion / Migration
Required
Business Partner Communication
Required
Data Analysis / Data Nuance Identification
Required
Accounting Knowledge
Strongly Preferred
Payroll Knowledge
Strongly Preferred
Missouri SAMII Experience
Strongly Preferred
JIRA
Required for task and issue management
Work Location Requirement
This position is 100% onsite. Candidates must be able and willing to work onsite for the duration of the engagement. Remote or hybrid work is not available for this position.

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