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Mainframe Developer With Cobol Jobs in Connecticut

Polarits

ETL Developer

Hartford, CT · On-site

$110 - $170/hr

Job Title ETL Developer Location Hartford, CT, hybrid schedule Length 12 months+ Visa H4 EAD, GC ... Ideally recent experience with COBOL mainframe systems, migrating from * Data Mapping, Data ...

Polar IT Services

ETL Developer

Hartford, CT · On-site +1

$51.50 - $67.25/hr

Job Title: ETL Developer Location: Hartford, CT, hybrid schedule Length: 12 months+ Visa: H4 EAD ... Ideally recent experience with COBOL mainframe systems, migrating from * Data Mapping, Data ...

nLeague

Mainframe Systems Programer

Hartford, CT · On-site

$55.50 - $70.50/hr

Ensure compliance with enterprise change management, security, and audit requirements. * Required Qualifications * 10+ years of Mainframe Development experience. * Expert-level COBOL programming ...

Tech Mirrors

Mainframe Systems Programmer

Hartford, CT · On-site

$100 - $130/hr

Ensure compliance with enterprise change management, security, and audit requirements. Qualifications * 10+ years of Mainframe Development experience. * Expert-level COBOL programming experience.

ICONMA

Mainframe IT Project Manager

Hartford, CT

$99K - $117K/yr

... Programming Tools System Design Qualifications Mainframe background leveraging Cobol and Endeavor, partners with GSO team that is scaled based on demand; GSO engagement is leveraging the Project ...

Neshent Technologies

We are seeking a Senior Dell EMC Mainframe Storage Engineer with expertise in Mainframe Enablers (MFE) and Geographically Dispersed Disaster Restart (GDDR) to support a highly available enterprise ...

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Mainframe Developer With Cobol information

What is a mainframe developer with COBOL?

Mainframe Developers with COBOL are IT professionals who specialize in developing, maintaining, and supporting applications that run on mainframe computers using the COBOL programming language. They work with legacy systems, often in industries like banking, insurance, or government, where mainframes are still prevalent due to their reliability and processing power. Their responsibilities include coding, debugging, testing, and optimizing COBOL programs, as well as integrating mainframe applications with newer technologies. Mainframe Developers also ensure the performance and security of mission-critical systems that handle large volumes of data.

What are the key skills and qualifications needed to thrive as a mainframe developer with COBOL?

To thrive as a Mainframe Developer with COBOL, you need expertise in COBOL programming, mainframe systems (such as IBM z/OS), JCL, and database management, typically supported by a degree in computer science or a related field. Familiarity with tools like TSO/ISPF, DB2, CICS, and source control systems is commonly required, and certifications in mainframe technologies can be advantageous. Strong problem-solving, attention to detail, and effective communication skills help you manage complex legacy systems and collaborate with cross-functional teams. These skills and qualifications are vital for maintaining, enhancing, and supporting critical business applications that rely on mainframe environments.

What are some common challenges faced by mainframe developers working with COBOL, and how can they be overcome?

Mainframe Developers working with COBOL often encounter challenges such as maintaining legacy code, integrating mainframe systems with modern technologies, and adapting to evolving business requirements. Legacy systems may lack proper documentation, making it crucial to develop strong debugging and reverse-engineering skills. Collaborating closely with business analysts and other IT teams helps ensure a clear understanding of requirements and smoother integration projects. Staying up-to-date with mainframe modernization tools and participating in knowledge-sharing sessions within your team can also help overcome these challenges and support career growth.

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For Mainframe Developer With Cobol jobs in Connecticut, the most frequently searched job titles are:

What job categories do people searching Mainframe Developer With Cobol jobs in Connecticut look for?

The top searched job categories for Mainframe Developer With Cobol jobs in Connecticut are:

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Cities in Connecticut with the most Mainframe Developer With Cobol job openings:

Mainframe Developer With Cobol jobs near you
Infographic showing various Mainframe Developer With Cobol job openings in Connecticut as of August 2026, with employment types broken down into 79% Full Time, 4% Part Time, 2% Temporary, and 15% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Sr. Mainframe Developer

Cognizant Technology Solutions

Hartford, CT • On-site

$60K - $90K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 3 days ago

New

Cognizant rating

7.2

Company rating: 7.2 out of 10

Based on 86 frontline employees who took The Breakroom Quiz

52nd of 72 rated business consultants

Job description

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Sr. Mainframe Developer
Cognizant is seeking an experienced Sr. Mainframe Developer with 7+ years of strong expertise in mainframe technologies and Healthcare Claims processing. The successful candidate will design, develop, maintain, and support enterprise Claims applications while partnering with cross-functional and offshore teams to deliver scalable, efficient, and compliant solutions.
Responsibilities
  • Develop and implement technical solutions for Claims applications by transforming business requirements into scalable, efficient, and compliant mainframe systems.
  • Design, develop, test, debug, and maintain mainframe Claims applications using COBOL, JCL, DB2, VSAM, CICS, and MQ.
  • Collaborate with business analysts, QA teams, project managers, and support teams to ensure successful project execution.
  • Provide technical leadership and mentoring to offshore team members and coordinate onsite-offshore activities.
  • Serve as a key point of contact for technical issue resolution.
  • Troubleshoot production issues and optimize application performance.
  • Conduct code reviews and ensure compliance with established coding standards and best practices.
  • Support SIT, UAT, production deployments, and post-implementation activities.
Required Qualifications
  • Strong experience with mainframe technologies, including COBOL, JCL, DB2, VSAM, CICS, and MQ.
  • Experience with Healthcare Claims Adjudication processes and related business workflows.
  • Strong understanding of code migration and release management processes.
  • Experience with package creation and code promotion across Development, Test, QA, and Production environments.
  • Knowledge of post-deployment validation and backout procedures.
  • Excellent analytical, troubleshooting, and problem-solving skills.
  • Strong communication and interpersonal skills with the ability to collaborate with business stakeholders, cross-functional teams, and offshore development teams.
  • Experience working in Agile development environments.
  • Ability to work independently while contributing effectively within a team environment.
Why Apply?
We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role.
Salary and Other Compensation
The annual salary for this position is between $60,000 and $90,000, depending on the experience and other qualifications of the successful candidate.
This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.
Benefits
Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:
  • Medical, Dental, Vision, and Life Insurance
  • Paid holidays plus Paid Time Off
  • 401(k) plan and contributions
  • Long-term and Short-term Disability
  • Paid Parental Leave
  • Employee Stock Purchase Plan
Disclaimer
The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Important Disclaimers
Please note: A few of our roles may require in-person interviews at Cognizant offices or client locations, depending on project or client needs.
Candidates must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.
Application Deadline
Applications for this position will be accepted until August 20, 2026. Candidates are encouraged to apply as early as possible, as the posting may close sooner if a sufficient pool of qualified applicants is identified.
About Cognizant
Cognizant is one of the world's leading professional services companies, transforming clients' business, operating, and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build, and run more innovative and efficient businesses.
About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization's unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.

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