Senior Mainframe Developer Jobs in Connecticut

Senior Mainframe Developer jobs in Connecticut are open across Hartford, Stamford, and New Haven and other Connecticut metros, with employers like CVS Health, Travelers, and Yale University hiring at every experience level. Find a role that fits below and apply directly.

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Overview

Open roles446+
Top employerCVS Health
Top cityHartford, CT
Cities hiring62
Work type70% On-site
Top industryConsulting

Showing 5 of 446+ Senior Mainframe Developer jobs

Voya Financial
Senior Website Developer
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Voya Financial
Added 3w ago
Senior Website Developer
Voya Financial
Windsor, Connecticut
Software Engineering
Cloud & DevOps
Backend Engineering
Frontend Engineering
$151k/yr
Hybrid
Bachelor's
5,001-10,000

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Voya Investment Management LLC
Senior Software Developer
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Voya Investment Management LLC
Added 1mo ago
Senior Software Developer
Voya Investment Management LLC
Windsor, One Orange Way, Connecticut
Software Engineering
Backend Engineering
On-Site
Associate's

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Nassau Financial Group
Senior Technology Developer
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Nassau Financial Group
Added 2mo ago
Senior Technology Developer
Nassau Financial Group
Hartford, Connecticut
Software Engineering
Technical Product & Program Management
Cloud & DevOps
Data Engineering
Cloud Engineering
$95k - $125k/yr
On-Site
Bachelor's
501-1,000

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Interactive Brokers
Senior Software Developer
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Interactive Brokers
Added 3mo ago
Senior Software Developer
Interactive Brokers
Greenwich, Connecticut
Software Engineering
Data Science & Analytics
Data Engineering
Data Science
Hybrid
Bachelor's

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Paradigm Infotech Inc.
Sr PHP Developer
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Paradigm Infotech Inc.
Added 2mo ago
Sr PHP Developer
Paradigm Infotech Inc.
Stamford, Connecticut
Software Engineering
Backend Engineering
On-Site

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See All 446+ Senior Mainframe Developer Jobs in Connecticut

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Senior Mainframe Developer Jobs by City in Connecticut

Where Connecticut roles are concentrated, by current openings.

Hartford
123 jobs
Stamford
49 jobs
New Haven
47 jobs
Greenwich
24 jobs
Rocky Hill
17 jobs
Norwalk
15 jobs
Trumbull
12 jobs
Bloomfield
11 jobs
Farmington
9 jobs

Senior Mainframe Developer Job Market in Connecticut

A snapshot from current Connecticut openings, updated as new roles post.

Who's Hiring

  • CVS Health
    CVS Health29
  • Travelers
    Travelers28
  • Yale University
    Yale University22
  • Thermo Fisher Scientific
    Thermo Fisher Scientific18
  • KPMG
    KPMG17

Top Industries Hiring

  • Consulting & Professional Services92
  • Healthcare & Medical Services67
  • Insurance62
  • Accounting & Auditing36
  • Technology & Software29

What Connecticut Employers Look For

The qualifications that appear most often in senior mainframe developer jobs across Connecticut.

  • Five or more years of COBOL or PL/I development on IBM z/OS mainframe environments
  • Proficiency with JCL, CICS, DB2, VSAM, and batch job scheduling tools such as CA-7 or TWS
  • Experience with IBM Rational Developer for z Systems or similar mainframe IDEs
  • Ability to analyze, debug, and optimize large-scale legacy batch and online transaction systems
  • Familiarity with mainframe security frameworks including RACF, ACF2, or Top Secret
  • Bachelor's degree in computer science, information systems, or a related technical discipline

Senior Mainframe Developer Jobs in Connecticut: Frequently Asked Questions

How many senior mainframe developer jobs are there in Connecticut?

There are 446+ senior mainframe developer openings in Connecticut on Migrate Mate as of June 2026, with the most roles in Hartford, Stamford, and New Haven. New positions post regularly as employers across Connecticut hire.

How much do senior mainframe developers make in Connecticut?

Senior mainframe developers in Connecticut earn a median of about $134,120 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $85,930 for the lowest 10% to over $205,160 for the top 10%. Pay rises with experience, specialty, and employer.

Which Connecticut cities have the most senior mainframe developer jobs?

Hartford, Stamford, and New Haven have the most senior mainframe developer openings in Connecticut right now, with additional roles spread across smaller metros statewide.

Which companies hire senior mainframe developers in Connecticut?

Employers hiring senior mainframe developers in Connecticut include CVS Health, Travelers, and Yale University, based on current listings on Migrate Mate as of June 2026.

Are there remote senior mainframe developer jobs in Connecticut?

Yes. About 30% of senior mainframe developer openings tied to Connecticut are remote or hybrid as of June 2026. The rest are on-site roles based in Connecticut metros.

How do I apply for senior mainframe developer jobs in Connecticut?

You can apply to senior mainframe developer jobs in Connecticut directly on Migrate Mate. Search the listings above, find roles that match your experience and preferred Connecticut location, then apply to each one that fits.

See All 446+ Senior Mainframe Developer Jobs in Connecticut

Find roles in Connecticut that match your experience and apply in just a few clicks.

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