ZipRecruiter

Log In

1

Mainframes Developer Jobs in Connecticut (NOW HIRING)

Polar IT Services

ETL Developer

Hartford, CT · On-site

$51.50 - $67.25/hr

Job Title: ETL Developer Location: Hartford, CT, hybrid schedule Length: 12 months+ Visa: H4 EAD ... This person must have strong experience and understanding of COBOL and mainframe systems, they will ...

Polar IT Services

ETL Developer

Hartford, CT · On-site

$51.50 - $67.25/hr

Job Title: ETL Developer Location: Hartford, CT, hybrid schedule Length: 12 months+ Visa: H4 EAD ... This person must have strong experience and understanding of COBOL and mainframe systems, they will ...

ICONMA

Mainframe IT Project Manager

Hartford, CT

$99K - $117K/yr

Our Staff Members Our in-house team offers a broad range of Information Technology, Engineering ... Mainframe IT Project Manager Location: Hartford, CT Duration: 6 months with possible contract to ...

Sonsoft Inc

Datastage

Hartford, CT

Hands-on experience in integrating data from heterogeneous data sources spanning across mainframes ... Experience and understanding of in Production support and performance engineering. * Technical ...

Sonsoft Inc

Datastage

Hartford, CT · On-site

Hands-on experience in integrating data from heterogeneous data sources spanning across mainframes ... Experience and understanding of in Production support and performance engineering. * Technical ...

Unisys

Field Engineer Technician

East Hartford, CT · On-site

Serves as Field Engineer for large, complex clients and across the range of company products and ... Tests and certifies mainframes, servers and other infrastructure associated with networks and ...

Unisys

Field Engineer Technician

East Hartford, CT · On-site

What success looks like in this role: • Serves as Field Engineer for large, complex clients and ... certifies mainframes, servers and other infrastructure associated with networks and peripherals.

Sonsoft Inc

Datastage Consultant

Hartford, CT

Hands-on experience in integrating data from heterogeneous data sources spanning across mainframes ... Experience and understanding of in Production support and performance engineering. * Technical ...

next page

Showing results 1-20

All JobsMainframes Developer JobsMainframes Developer Jobs in Connecticut

Mainframes Developer information

What does a mainframe developer do?

A mainframe developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work in environments that require high reliability and security, and may also handle system updates, performance tuning, and integration with other systems.

What is mainframe developer salary?

The salary for a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Senior roles or those with specialized skills in COBOL, JCL, or mainframe environments may earn higher compensation. Many positions also offer benefits such as health insurance and retirement plans.

Can mainframe be replaced by AI?

Mainframes are large-scale computing systems used for critical enterprise applications, and while AI can automate certain tasks and improve efficiency, it does not replace the core functions of mainframes. Mainframe developers often work with legacy systems, COBOL programming, and security protocols, which require specialized skills that are not fully replaced by AI technologies.

Is mainframe still in demand?

Mainframes remain in demand for large enterprises such as banks, insurance companies, and government agencies that rely on their reliability, security, and processing power. Mainframe developers with skills in COBOL, JCL, and mainframe environments are sought after to maintain and upgrade legacy systems, though the overall demand has decreased as organizations adopt cloud and distributed computing. Certification and experience with mainframe tools can enhance job prospects in this specialized field.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What are popular job titles related to Mainframes Developer jobs in Connecticut? For Mainframes Developer jobs in Connecticut, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Connecticut look for? The top searched job categories for Mainframes Developer jobs in Connecticut are:
Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Connecticut as of June 2026, with employment types broken down into 32% Full Time, and 68% Contract. Highlights an 94% In-person, and 6% Hybrid job distribution.
ETL Developer

ETL Developer

Polar IT Services

Hartford, CT • On-site

$51.50 - $67.25/hr

Other

Posted 19 days ago

Job description

Hello Folks,
Hope you are doing good!
Please find the below requirement and let me know your interest?
Job Title: ETL Developer
Location: Hartford, CT, hybrid schedule
Length: 12 months+
Visa: H4 EAD, GC, GC EAD and USC only
Looking for 10+years of experience only
We are looking for the professional to have strong experience with data conversions and migrations from legacy systems. This person must have strong experience and understanding of COBOL and mainframe systems, they will likely be migrating away form COBOL. Must have strong skills in SSIS, data mapping, data cleaning. In addition to SSIS, must be strong in Python.
  • ETL - strong SSIS
  • Strong Python
  • Ideally recent experience with COBOL mainframe systems, migrating from
  • Data Mapping, Data Cleansing
  • Strong experience extracting data from target sources, legacy systems.

Thanks
Jagdish | Manager - IT Staffing
T (443)-489-4433 | Jagdish@polarits.com
6095 Marshalee Dr, Suite 250, Elkridge, MD 21075
Note: If you have received this message in error, please notify us immediately by reply e-mail so that we may correct our internal records. Please then delete the original message (including any attachments) in its entirety. Thank you

Apply