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Mainframe Legacy Developer Jobs (NOW HIRING)

SolGenie

Senior Mainframe Analyst / Developer

Mainframe / Legacy Systems Modernization * 10+ years of Mainframe experience with strong hands-on expertise in reverse engineering undocumented legacy systems, including complex COBOL and IBM ...

Saanvi Technologies

Mainframe Software Engineer

Dearborn, MI · On-site

$45 - $58/hr

Vehicle Invoicing and Drafting is a mission critical Mainframe Legacy application (with COBOL, JCL ... Senior Software Engineer Exp: Maintaining complex Legacy Code 10+ years in IT; 10+ years in COBOL ...

Stellar IT Group

Mainframe Developer

Saint Louis, MO · On-site

$47.75 - $61.25/hr

Remote Duration: 6-12+ Months Contract Role Overview We are seeking experienced Senior Mainframe Engineers with deep expertise in legacy banking systems to investigate, understand, and safely ...

Saige Partners

Mainframe Developer

Davenport, IA

$46.50 - $59.75/hr

Analyze existing legacy COBOL, JCL, and PL/1 code within the IBM Mainframe environment. Break down ... Bachelor's degree in Computer Science, Engineering, or related field preferred. If you are ...

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Mainframe Legacy Developer information

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How much do mainframe legacy developer jobs pay per hour?

As of Sep 15, 2026, the average hourly pay for mainframe legacy 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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Infographic showing various Mainframe Legacy Developer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 11% Part Time, 3% Contract, and 1% Nights. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $111,026 per year, or $53.4 per hour.

Mainframe Legacy Modernization Engineer

Jersey City, NJ • On-site

Saransh Inc
IT Services • 51 - 200 employees
Learn more about Saransh Incexternal

$51.25 - $65.75/hr

Contractor

Re-posted 26 days ago

Job description

Role: Mainframe Legacy Modernization Engineer
Location: Jersey City, NJ (Onsite from Day 1) - Locals highly preferred
Job Type: Contract
 

*LOCAL CANDIDATES ONLY*
*THE CLIENT INTERVIEW MAY BE IN-PERSON OR VIRTUAL, CANDIDATES MUST BE OPEN TO BOTH*
*Mainframe - CICS IS A MANDATORY SKILL*]

Skill Metrics:

DB2

Yes

Cobol

Yes

Mainframe CICS

Yes

VSAM

Yes


Job Description:

  • Analyze complex mainframe applications (COBOL, CICS, JCL, DB2, VSAM, MQ) to understand business rules, data flows, batch cycles, and system interdependencies.
  • Perform inventory analysis, call-chain analysis, and functional decomposition of monolithic applications.
  • Extract and document technical and business rules using automated discovery or reverse-engineering tools.
  • Design and implement modernization strategies including re-host, re-platform, re-factor, re-architect, replace, or retire approaches
  • Convert or refactor legacy COBOL logic into modern languages such as Java using automated tools or manual re-engineering techniques.
  • Apply incremental modernization patterns such as strangler-fig and coexistence models to reduce migration risk.
  • Modernize JCL-based batch processes into cloud-native batch frameworks (e.g., Spring Batch, workflow orchestration).
  • Support migration or re-engineering of scheduling, file transfer, and output management components.
  • Ensure functional parity and data integrity between legacy and modernized systems.

Job Requirements:

  • 8–10 years of overall IT experience with a strong focus on mainframe application development and modernization.
  • Expert-level proficiency in COBOL and CICS transaction programming
  • Strong command of JCL, z/OS utilities (SORT, IDCAMS, IEBGENER), and batch processing
  • Deep knowledge of DB2 — SQL optimization, bind/rebind, and performance tuning for large financial datasets
  • Solid experience with VSAM file structures and access methods
  • Experience with API design, REST services, and integration middleware.
  • Knowledge of modernization patterns such as re-host, re-platform, re-write, and strangler-fig approaches.
  • Experience and knowledge working in Banking domain