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Mainframe Support Jobs in Connecticut (NOW HIRING)

InstantServe LLC

Mainframe Systems Programmer

Hartford, CT · On-site

$55.50 - $70.50/hr

Mainframe Systems Programmer - Hybrid (Connecticut) Location: Hybrid - Connecticut (Local ... Support testing activities, including unit, integration, system, and user acceptance testing.

nLeague

Mainframe Systems Programer

Hartford, CT · On-site

$55.50 - $70.50/hr

Mainframe Mainframe Programmer/ Developer Location: Hybrid- 55 Farmington Avenue Hartford ... Create, modify, and support JCL required for data extracts, file transfers, conversion processing ...

Propark Mobility

Payroll Specialist

Hartford, CT

$55K - $65K/yr

Experience with UKG Ready Mainframe is required; experience with ADP Workforce Now is an added plus ... Support system implementations and acquisitions. Payroll Processing Process full-cycle bi-weekly ...

Propark Mobility

Payroll Specialist

Hartford, CT · On-site

$55K - $65K/yr

Experience with UKG Ready Mainframe is required; experience with ADP Workforce Now is an added plus ... Team Support • Collaborate with the payroll team to maintain compliant, efficient processes. • ...

Propark Mobility

Payroll Specialist

Hartford, CT

$55K - $65K/yr

Experience with UKG Ready Mainframe is required; experience with ADP Workforce Now is an added plus ... Team Support · Collaborate with the payroll team to maintain compliant, efficient processes. · ...

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Mainframe Support information

See Connecticut salary details

$9

$50

$68

How much do mainframe support jobs pay per hour?

As of Aug 7, 2026, the average hourly pay for mainframe support in Connecticut is $50.78, according to ZipRecruiter salary data. Most workers in this role earn between $44.81 and $57.64 per hour, depending on experience, location, and employer.

What is a mainframe support?

A Mainframe Support job involves maintaining, troubleshooting, and optimizing mainframe systems to ensure smooth operations. Responsibilities typically include monitoring system performance, resolving technical issues, applying software updates, and ensuring data security. Mainframe Support professionals work with legacy systems, batch processing, and various programming languages like COBOL or JCL. Their role is critical in industries like banking, healthcare, and government, where mainframes handle large-scale transactions and data processing.

What are the key skills and qualifications needed to thrive in mainframe support, and why are they important?

To thrive as a Mainframe Support professional, you need a solid understanding of mainframe operating systems (such as z/OS), basic programming skills, and troubleshooting abilities, typically supported by a degree in computer science or equivalent experience. Proficiency with tools like IBM ISPF, SDSF, JCL, and familiarity with monitoring and batch processing tools, as well as certifications like IBM Certified System Administrator, are often expected. Strong analytical thinking, communication, and teamwork skills are crucial for effectively addressing technical issues and collaborating with cross-functional teams. These abilities ensure prompt issue resolution and maintain the stability and reliability of critical business systems.

What are the typical daily responsibilities of a mainframe support?

Mainframe Support professionals typically monitor system performance, respond to incidents or service requests, and perform routine maintenance to ensure mainframe systems run smoothly. Their day may include troubleshooting job failures, updating software or system configurations, and working with application teams to resolve integration or data transfer issues. They often participate in on-call rotations and collaborate closely with other IT teams, such as network or security specialists. These responsibilities are essential to minimize downtime and maintain uninterrupted business operations.

What skills are needed for mainframe support?

Mainframe support requires strong knowledge of mainframe operating systems such as z/OS, proficiency in programming languages like COBOL and JCL, and experience with troubleshooting hardware and software issues. Familiarity with tools like IBM Debug Tool and knowledge of database management systems such as DB2 are also important. Certifications like IBM Certified System Programmer can enhance job prospects.

Is mainframe support still in demand?

Mainframe support professionals are still in demand due to the continued reliance of large organizations on mainframe systems for critical operations. Skills in COBOL, JCL, and mainframe troubleshooting remain valuable, especially in finance, government, and insurance sectors where legacy systems are prevalent.
What are popular job titles related to Mainframe Support jobs in Connecticut? For Mainframe Support jobs in Connecticut, the most frequently searched job titles are:
What job categories do people searching Mainframe Support jobs in Connecticut look for? The top searched job categories for Mainframe Support jobs in Connecticut are:
Mainframe Support jobs near you
Infographic showing various Mainframe Support job openings in Connecticut as of August 2026, with employment types broken down into 1% As Needed, 71% Full Time, 23% Part Time, and 5% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $105,618 per year, or $50.8 per hour.

Mainframe Systems Programmer

InstantServe LLC

Hartford, CT • On-site

$55.50 - $70.50/hr

Full-time

Re-posted 20 days ago

Job description

Job Title: Mainframe Systems Programmer - Hybrid (Connecticut)
Location: Hybrid - Connecticut (Local Candidates Only)
Duration: Long-Term Contract
Job Overview
The Connecticut Department of Social Services (DSS) is seeking an experienced Mainframe Systems Programmer to support a large-scale enterprise data migration and legacy modernization initiative. This role requires a senior-level professional with extensive hands-on experience in mainframe technologies, data conversion, system analysis, and batch processing environments. The selected candidate will play a key role in analyzing legacy applications, extracting and converting data, and supporting migration efforts from IMS-based systems to modern target platforms.
Key Responsibilities
  • Analyze and document existing legacy mainframe applications and business processes.
  • Design, develop, and execute data extraction, conversion, and migration solutions.
  • Modify, maintain, and enhance COBOL programs and JCL scripts to support migration activities.
  • Work extensively with IMS databases, including data analysis, validation, and reconciliation.
  • Develop and execute batch processing solutions and troubleshoot production issues.
  • Utilize FTP/SFTP processes for secure file transfers and data movement.
  • Perform data validation, quality assurance, and reconciliation between source and target systems.
  • Support testing activities, including unit, integration, system, and user acceptance testing.
  • Create technical documentation, migration procedures, and operational support materials.
  • Collaborate with business stakeholders, technical teams, and project management throughout the migration lifecycle.
  • Identify and resolve complex system and data-related issues independently.
Required Qualifications
  • 10+ years of experience as a Mainframe Systems Programmer or Mainframe Developer.
  • Strong hands-on experience with:
    • COBOL
    • JCL (Job Control Language)
    • IMS Database
    • Mainframe Development and Support
  • Experience performing data extraction, conversion, migration, and reconciliation activities.
  • Strong knowledge of batch processing environments and scheduling.
  • Experience with FTP/SFTP file transfer processes.
  • Proven ability to analyze and troubleshoot complex legacy systems.
  • Strong documentation, communication, and problem-solving skills.
  • Ability to work independently in a fast-paced project environment.
Preferred Qualifications
  • Experience with BMC Utilities for IMS.
  • Experience using File-AID, EZtrieve, CLIST, and REXX.
  • Prior involvement in legacy modernization or large-scale data migration projects.
  • Experience in government, healthcare, insurance, or financial services environments.
  • Familiarity with enterprise data integration and modernization initiatives.
Additional Information
  • Hybrid work arrangement within Connecticut.
  • Candidates must currently reside in Connecticut.
  • Strong preference for candidates with prior state government or public sector experience.
  • Immediate interviews for qualified local candidates.
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About InstantServe

Sourced by ZipRecruiter

InstantServe provides a one-stop solution to all Healthcare, IT/Non-IT Staffing needs. Established in 2016, InstantServe is a strong workforce of over 100+ go-getters with a demonstrated background in IT/Non-IT service. We are a nationally certified SBE from the Department of Administration (State of PA). As a proud Minority Woman Owned Small Business Enterprise (M/WBE), InstantServe boasts of a strong team of professionals who have extensive experience catering to several Federal, Public, Commercial, and Healthcare Clients which includes 26 States and 46 government agencies. InstantServe is a client-centric organization that offers cost-effective and reliable solutions. Client satisfaction is sacrosanct! Our team strives to provide the best staffing and IT solutions to take your business to the next level.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Wayne, PA, US

Year founded

2016

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