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Mainframe Developer Jobs in Connecticut (NOW HIRING)

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 ...

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 ...

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 ...

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

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

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

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.

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

software developer

Norwalk, CT · On-site

$21K - $128K/yr

A qualified software developer is needed by our organization to assist in the advancement of our ongoing projects. Writing code to create software and modifying it to correct bugs, adapt it to new ...

Senior Developer

Hartford, CT · On-site

$55 - $72.75/hr

Web accessibility developer Job Id: Digital Accessibility -Website Developer Client: CT DAS Duration: 06+ Months Location: Remote, Hartford, CT. The State of Connecticut (CT) is seeking a Digital ...

Application Developer Salary: 75k-80k Location: Windsor, CT Green card or citizen only No relocation Financial Services firm seeks an Application Developer for its staff. Responsibilities:

Familiarity with Azure DevOps or similar tools for tracking tasks, requirements, and defects ... Experience working with legacy mainframe applications, particularly COBOL-based systems. * Ability ...

Application Developer Location:55 Farmington Ave Hartford, Connecticut 06105 Description: • Microsoft .NET Certification : Candidates must possess a valid certification in Microsoft .NET ...

Senior Developer

Hartford, CT · On-site

$55 - $72.75/hr

Hi, Our client is looking for a Senior Developer in Hartford, CT location below is the detailed requirement. Job Title: Senior Developer Location: Hartford, CT * Bachelor's degree in related field.

Showing results 41-60

Mainframe Developer information

See Connecticut salary details

$9

$50

$68

How much do mainframe developer jobs pay per hour?

As of Aug 23, 2026, the average hourly pay for mainframe developer 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 developer?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

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

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.

What are some common challenges mainframe developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

Is a mainframe developer a good career?

A mainframe developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL, but it may require ongoing learning of evolving mainframe tools and certifications. Overall, it can be a good career for those interested in enterprise computing and system stability.

Is a mainframe developer hard to learn?

Mainframe developers typically need to learn specialized programming languages like COBOL and understand mainframe environments, which can have a steep learning curve for beginners. However, with prior programming experience and training, acquiring the necessary skills is achievable, and many employers offer on-the-job training or certification programs.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, insurance, and government, where legacy systems remain critical. They typically work with COBOL, JCL, and mainframe environments, and demand depends on the organization's reliance on mainframe technology and ongoing maintenance needs.

What are popular job titles related to Mainframe Developer jobs in Connecticut?

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

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

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

Infographic showing various Mainframe Developer 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, with an average salary of $105,618 per year, or $50.8 per hour.

Application Development Senior Advisor- Hybrid

Cigna

Bloomfield, CT • On-site

$154K - $203K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 20 days ago


Cigna Healthcare rating

8.3

Company rating: 8.3 out of 10

Based on 239 frontline employees who took The Breakroom Quiz

41st of 893 rated healthcare providers


Job description

Cigna-Evernorth Services Inc. seeks an Application Development Senior Advisor for the Bloomfield, CT location to design, develop, and integrate solutions to solve business and technical requirements across digital web applications.
Responsibilities:
• Develop reusable and scalable Application Programming Interfaces (APIs).
• Work independently and in close partnership with cross-functional teams and management.
• Design, develop and maintain high-quality software by analyzing business requirements and leveraging end-to-end business knowledge.
• Write clean, secure, efficient and modular code.
• Improve and simplify existing application code to ensure high unit test coverage.
• Identify potential challenges and resolving application complications.
• Collaborate with Product Owners, Quality Engineers, Scrum Masters, and Software Engineers as well as external teams to deliver value.
• Mentor junior engineers as necessary.
• Collaborate with architecture, design and development teams for critical applications such as Healthcare Eligibility, Claims, and Claim Reimbursement domains.
• Complete priority resolution incidents to support business needs.
• Hybrid Work Schedule.
Qualifications:
• Bachelor's degree in Computer Engineering, Information Technology or related field and 5 years of experience as a Senior Project Engineer or related occupation in the healthcare domain.
• Requires experience with: Working in/with clients in the healthcare or pharmacy benefit management industry;
• Designing, developing, and maintaining high quality software; Writing clean, secure, efficient, and modular code;
• Improving and simplifying existing application code to ensure high unit test coverage;
• Utilizing core application languages including IBM Integration Bus/App Connect Enterprise, AWS, Python, and Java;
• Collaborating with Architecture, Design, and Development Teams for critical applications including Healthcare Eligibility, Claims, and Claim Requirement Domain;
• Designing, developing, and integrating solutions to solve business and technical requirements across digital web applications;
• Designing APIs, data models, sequence diagrams, and class diagrams; and
• Using: IBM MQ, ESQL, DB2, Oracle Database, Shell Scripting, AI, REST-Based Services, Automated Integration Tests, Relational Databases including JDBC; Agile Methodology using Scrum, DevOps and Continuous Integration using Jenkins and Maven, Version Control Systems, Kafka, and accessing data on mainframes.
Salary Range: $154,024-$203,600/year
If you will be working at home occasionally or permanently, the internet connection must be obtained through a cable broadband or fiber optic internet service provider with speeds of at least 10Mbps download/5Mbps upload.
For this position, we anticipate offering an annual salary of 122,200 - 203,600 USD / yearly, depending on relevant factors, including experience and geographic location.
This role is also anticipated to be eligible to participate in an annual bonus plan.
At The Cigna Group, you'll enjoy a comprehensive range of benefits, with a focus on supporting your whole health. Starting on day one of your employment, you'll be offered several health-related benefits including medical, vision, dental, and well-being and behavioral health programs. We also offer 401(k), company paid life insurance, tuition reimbursement, a minimum of 18 days of paid time off per year, paid holidays, and leaves of absence. For more details on our employee benefits programs, click here.
About The Cigna Group
Doing something meaningful starts with a simple decision, a commitment to changing lives. At The Cigna Group, we're dedicated to improving the health and vitality of those we serve. Through our divisions Cigna Healthcare and Evernorth Health Services, we are committed to enhancing the lives of our clients, customers and patients. Join us in driving growth and improving lives.
Qualified applicants will be considered without regard to race, color, age, disability, sex, childbirth (including pregnancy) or related medical conditions including but not limited to lactation, sexual orientation, gender identity or expression, veteran or military status, religion, national origin, ancestry, marital or familial status, genetic information, status with regard to public assistance, citizenship status or any other characteristic protected by applicable equal employment opportunity laws.
If you need a reasonable accommodation to complete the online application process, please email seeyourself@thecignagroup.com for assistance. Please note that this email inbox is dedicated to accommodation requests only and cannot provide application updates or accept resumes.
The Cigna Group has a tobacco-free policy and reserves the right not to hire tobacco/nicotine users in states where that is legally permissible. Candidates in such states who use tobacco/nicotine will not be considered for employment unless they enter a qualifying smoking cessation program prior to the start of their employment. These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State.
Qualified applicants with criminal histories will be considered for employment in a manner consistent with all federal, state and local ordinances.

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About Cigna

Sourced by ZipRecruiter

Cigna Corporation exists to improve lives. We are a global health service company dedicated to improving the health, well-being and peace of mind of those we serve. Together, with colleagues around the world, we aspire to transform health services, making them more affordable and accessible to millions. Through our unmatched expertise, bold action, fresh ideas and an unwavering commitment to patient-centered care, we are a force of health services innovation. When you work with us, or one of our subsidiaries, you'll enjoy meaningful career experiences that enrich people's lives.

Industry

Health care and social assistance

Company size

10,000+ Employees

Headquarters location

Bloomfield, CT, US

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