Senior Level Senior Mainframe Developer Jobs

Senior level senior mainframe developer jobs put experienced engineers in charge of architecture decisions, production system integrity, and the technical direction of the teams that build and maintain them. Roles are concentrated across Technology & Software, Consulting & Professional Services, and Electronics & Hardware, with a mix of on-site, remote, and hybrid settings, and employers like Broadcom, Ensono, and NTT DATA hiring at this level now.

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Overview

Open roles43
Top stateIllinois
Top employerBroadcom
Top cityAtlanta, GA
Work type55% On-site
Top industryTechnology

Showing 5 of 43+ Senior Level Senior Mainframe Developer jobs

Ensono
Senior Mainframe Systems Programmer – ADABAS
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Ensono
New 1m ago
Senior Mainframe Systems Programmer – ADABAS
Ensono
Remote
Data Engineering
Database Administration (DBA)
IT Support
$84k - $148k/yr
Remote (US)
Bachelor's degree
1,001-5,000

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Unum
Senior Software Engineer - Mainframe
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Unum
New 1m ago
Senior Software Engineer - Mainframe
Unum
Atlanta, Georgia
Software Engineering
Technical Product & Program Management
UI/UX Design
$98k - $202k/yr
Bachelor's degree
10,000+

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Broadcom
Experienced Mainframe Software Development Engineer in Test
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Broadcom
New 1m ago
Experienced Mainframe Software Development Engineer in Test
Broadcom
Lisle, Illinois
Backend Engineering
Cloud & DevOps
Software Engineering
$108k - $173k/yr
ISTQB Certification
10,000+

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Fidelity Investments
Principal IOM Mainframe Developer
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Fidelity Investments
New 1m ago
Principal IOM Mainframe Developer
Fidelity Investments
Smithfield, Rhode Island
Backend Engineering
Cybersecurity
Security Engineering
Software Engineering
Bachelor of Science
10,000+

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T
COBOL Mainframe Developer
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T
New 1m ago
COBOL Mainframe Developer
TECHSTRA SOLUTIONS
Pittsburgh, Pennsylvania
Data Engineering
Software Engineering
Solutions Engineering & Architecture
Bachelor's degree in finance

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Senior Level Senior Mainframe Developer Job Market

Who's Hiring

  • Broadcom
    Broadcom7
  • Ensono
    Ensono5
  • NTT DATA
    NTT DATA3
  • Capgemini
    Capgemini2
  • Bank of America
    Bank of America2

Top Industries Hiring

  • Technology & Software19
  • Consulting & Professional Services9
  • Electronics & Hardware7
  • Banking & Financial Services6
  • Insurance2

Senior Level Senior Mainframe Developer Jobs: Frequently Asked Questions

How do I get a senior level senior mainframe developer job?

Employers at this level look for candidates who have owned complex COBOL, PL/I, or Assembler systems end to end, not just maintained them. Demonstrable experience leading migrations, modernization initiatives, or performance tuning on production mainframes gives a strong edge. Showing that you have mentored junior developers or set coding standards on a team signals the leadership readiness these roles require.

Which companies hire senior level senior mainframe developers?

Companies hiring senior level senior mainframe developers right now include Broadcom, Ensono, and NTT DATA, based on current listings on Migrate Mate as of June 2026. Hiring at this level tends to concentrate among large financial institutions, federal agencies, and enterprise technology firms that run mission-critical mainframe workloads at scale.

Are there remote senior level senior mainframe developer jobs?

Yes, though availability varies by employer and workload sensitivity. About 45% of senior level senior mainframe developer openings are remote or hybrid as of June 2026, reflecting growing comfort with distributed teams for experienced engineers who can operate independently. Some roles tied to classified or regulated environments still require on-site presence.

What makes a senior mainframe developer role senior level?

Senior level roles are defined by scope and ownership rather than task execution. A senior mainframe developer is expected to design solutions, evaluate architectural trade-offs, and take accountability for system reliability across entire platforms. They also mentor mid-level and junior developers, review code with an eye toward long-term maintainability, and often serve as the primary technical escalation point for critical incidents.

Which industries hire the most senior level senior mainframe developers?

Senior level senior mainframe developer roles concentrate in Technology & Software, Consulting & Professional Services, and Electronics & Hardware, based on current listings on Migrate Mate as of June 2026. These sectors rely on mainframe infrastructure for high-volume transaction processing, regulatory reporting, and data integrity at a scale that demands deeply experienced engineers to keep systems stable and current.