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Mainframe Programmer Jobs in Connecticut (NOW HIRING)

Saransh Inc

IMS / CICS Systems Programmer

Hartford, CT · On-site

$55.50 - $70.50/hr

IMS / CICS Systems Programmer Location: Hartford, CT Job Type: Contract * Working knowledge of SMP/E software installation process, analyzing PTFs and HOLDDATA, triaging HIPER, FIXCAT, and PE'd PTFs.

Chubb

Head of Data Engineering, PRS

Simsbury, CT · On-site

You'll leverage your Mainframe and Data modernization, AI, engineering, technical, business and communication expertise to partner with functional leaders to define and prioritize key data needs and ...

Chubb

Head of Data Engineering, PRS

Simsbury, CT · On-site

You'll leverage your Mainframe and Data modernization, AI, engineering, technical, business and communication expertise to partner with functional leaders to define and prioritize key data needs and ...

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 ...

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 ...

Chubb

Head of Data Engineering, PRS

Simsbury, CT · On-site

$224K - $314K/yr

You'll leverage your Mainframe and Data modernization, AI, engineering, technical, business and communication expertise to partner with functional leaders to define and prioritize key data needs and ...

ASSA ABLOY

Lead RPA Developer

New Haven, CT · On-site

$116K - $146K/yr

As Lead RPA Developer , you will play a critical role in delivering high-quality, scalable ... Strong experience in automating SAP, legacy, and mainframe applications, including SAP GUI ...

Assa Abloy

Lead RPA Developer

New Haven, CT · On-site

$116K - $146K/yr

As Lead RPA Developer , you will play a critical role in delivering high-quality, scalable ... Strong experience in automating SAP, legacy, and mainframe applications, including SAP GUI ...

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 ...

Sonsoft Inc

Datastage Consultant

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 ...

Powersolv

Business Analyst II

East Hartford, CT · On-site

... developers. * Responsible for documenting "as-is" workflows for invoice intake, PO matching ... In addition to financial systems background, experience working with legacy mainframe applications ...

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Mainframe Programmer information

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How much do mainframe programmer jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for mainframe programmer in Connecticut is $51.48, according to ZipRecruiter salary data. Most workers in this role earn between $44.81 and $60.14 per hour, depending on experience, location, and employer.

What is a mainframe programmer?

Mainframe Programmers are specialized software developers who design, write, test, and maintain code for mainframe computer systems. These professionals primarily work with legacy programming languages such as COBOL, JCL, and sometimes Assembler, to ensure critical business applications run smoothly and securely. They are often employed in industries like banking, insurance, and government where mainframe systems remain essential for processing large volumes of transactions. Mainframe Programmers also troubleshoot system issues, optimize performance, and may assist in system upgrades or migrations.

What does a mainframe programmer do?

As a mainframe programmer, your job is to design and program applications for mainframe computers, which are powerful machines that help to run many commercial and industrial processes. In this role, you may conduct an analysis of existing software to ensure it is as error-free as possible, help test new software, and implement software in a way that makes it easy for users to access. Mainframe programmers often use coding languages like COBOL, C++, SQL, Java, and CLIST when programming software. Somewhat unusually, most companies prefer to stick with specific coding languages even when they are not necessarily the best language for the job in order to reduce complexity and the risk of errors.

What are the key skills and qualifications needed to thrive as a mainframe programmer, and why are they important?

To thrive as a Mainframe Programmer, you need a solid understanding of COBOL, JCL, DB2, and general mainframe architecture, often supported by a degree in computer science or related experience. Familiarity with tools like IBM z/OS, TSO/ISPF, and source control systems such as Endevor or Changeman is typically required. Strong problem-solving skills, attention to detail, and effective communication set top performers apart in this role. These abilities are critical for maintaining legacy systems, ensuring data integrity, and supporting business-critical operations in large organizations.

What are some common challenges mainframe programmers face when working on legacy systems?

Mainframe Programmers often encounter challenges such as understanding complex, decades-old codebases written in languages like COBOL or Assembler, and integrating these systems with modern technologies. Documentation may be sparse or outdated, requiring strong problem-solving and analytical skills to decipher business logic. Additionally, coordinating with cross-functional teams—including business analysts, testers, and infrastructure specialists—is essential to ensure smooth system updates and migrations. Adaptability and effective communication are key to overcoming these obstacles and supporting mission-critical applications.

What is the difference between Mainframe Programmer vs Mainframe Developer?

AspectMainframe ProgrammerMainframe Developer
Primary RoleWriting, testing, and maintaining mainframe codeDesigning and developing mainframe applications and systems
Skills & CertificationsCOBOL, JCL, DB2, certifications in mainframe technologiesSimilar skills, often with additional focus on system design and architecture
Work EnvironmentMainframe environments in banking, finance, governmentSame environments, with broader development responsibilities
Job FocusCode implementation and troubleshootingApplication development and system integration

While both roles work within mainframe environments and share skills like COBOL and JCL, Mainframe Programmers primarily focus on coding and maintenance, whereas Mainframe Developers are involved in designing and developing new applications and systems. The roles often overlap, but the developer role typically encompasses a broader scope in application lifecycle management.

Is a mainframe programmer a good career?

A mainframe programmer is a specialized IT professional who develops and maintains legacy systems using languages like COBOL and tools such as IBM Z. The role offers stable employment opportunities, especially in industries like finance and government, with demand for skills in mainframe environments remaining steady despite the rise of cloud computing. Certifications and experience with mainframe hardware and software can enhance job prospects and salary potential.

Is a mainframe programmer still in demand?

Mainframe programmers are still in demand in industries such as finance, government, and healthcare that rely on legacy systems. They typically need skills in COBOL, JCL, and mainframe environments, and demand remains stable due to the continued use of mainframe technology for critical applications.
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Mainframe Programmer jobs near you
Infographic showing various Mainframe Programmer job openings in Connecticut as of August 2026, with employment types broken down into 82% Full Time, 6% Part Time, 2% Temporary, 9% Contract, and 1% Nights. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $107,075 per year, or $51.5 per hour.

Informatica-MDM + IDQ Developer

InterSources Inc

Hartford, CT • On-site

Full-time

Re-posted 28 days ago

Job description

Job Summary:
InterSources Inc is a Small Business Enterprise specializing in IT Consulting and Staffing Solutions. They are seeking an Informatica-MDM + IDQ Developer with experience in Informatica MDM and IDQ to manage end-to-end application processes and data management tasks.
Responsibilities:
• Around 4 to 6 year experience in Informatica MDM and Informatica IDQ
• Should be Well versed with the Informatica end-to-end application, from the Architecture to the delivery with various sources and Targets, ranging from Mainframe to the Teradata Applications
• Should have track record in working various types of projects, OLAP, OLTP, Data Warehousing, Migration, BI Solutions project
• Should have Hands on experience in Informatica - IDQ
• Understands where to obtain information needed to make the appropriate decisions
• Demonstrates ability to break down a problem to manageable pieces and implement effective, timely solutions
• Identifies the problem versus the symptom
• Performs System analyst activities
• Strong data management concept understanding
• Should be well Versed with Different Tools for Accessing Databases and development in databases including TOAD, PLSQL Developer, ISQL PLUS, SQL PLUS, SQL Navigator
• Should have Hands on experience in Informatica
Qualifications:
Required:
• Around 4 to 6 year experience in Informatica MDM and Informatica IDQ
• Should be Well versed with the Informatica end-to-end application, from the Architecture to the delivery with various sources and Targets, ranging from Mainframe to the Teradata Applications
• Should have track record in working various types of projects, OLAP, OLTP, Data Warehousing, Migration, BI Solutions project
• Should have Hands on experience in Informatica - IDQ
• Understands where to obtain information needed to make the appropriate decisions
• Demonstrates ability to break down a problem to manageable pieces and implement effective, timely solutions
• Identifies the problem versus the symptom
• Performs System analyst activities
• Strong data management concept understanding
• Should be well Versed with Different Tools for Accessing Databases and development in databases including TOAD, PLSQL Developer, ISQL PLUS, SQL PLUS, SQL Navigator
• Should have Hands on experience in Informatica
Company:
InterSources Inc. solves operational problems where protection, performance, compliance, AI, and workforce capability must work together. Founded in 2007, the company is headquartered in Fremont, USA, with a team of 501-1000 employees. The company is currently Late Stage.
InterSources logo

About InterSources

Sourced by ZipRecruiter

In 2007, Our journey began as pioneers in the realm of technology and security. Since then, InterSources Inc. has evolved into a trusted partner, leading the way in Cloud Security, Cybersecurity, PLG Consulting, Digital Transformation, and Professional Services. With a rich history of excellence and a forward-thinking approach, we continue to secure your digital future and drive innovation. Explore our legacy of success and discover the possibilities that lie ahead.

Industry

Recruiting and staffing services

Company size

51 - 200 Employees

Headquarters location

Fremont, CA, US

Social media

Twitter

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