Senior Mainframe Developer Jobs in Connecticut
Senior Mainframe Developer jobs in Connecticut are open across Hartford, Stamford, and New Haven and other Connecticut metros, with employers like CVS Health, Travelers, and Yale University hiring at every experience level. Find a role that fits below and apply directly.
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Together we fight for everyone’s opportunity for a better financial future.
We will do this together — with customers, partners and colleagues. We will fight for others, not against: We will stand up for and champion everyone’s access to opportunities. The status quo is not good enough … we believe every individual and every community deserves access to financial opportunities. We are determined to support both individuals and communities in reaching a better financial future. We know that reaching this future depends on our actions today.
Like our Purpose Statement, Voya believes in being bold and committed to action. We are committed to a work environment where the differences that we are born with — and those we acquire throughout our lives — are understood, valued and intentionally pursued. We believe that our employees own our culture and have a responsibility to foster an environment where we all feel comfortable bringing our whole selves to work. Purposefully bringing our differences together to positively influence our culture, serve our clients and enrich our communities is essential to our vision.
Are you ready to join a company with a strong purpose and a winning culture? Start your Voyage – Apply Now
Duties: Develop and maintain Voya’s website, managing customer interactions, and ensuring seamless integration of various systems. Lead technical discussions and troubleshoot issues related to Drupal, Azure, C# and other platforms. Collaborate with different teams to ensure the successful implementation of projects. Serve as a critical developer for Voya’s websites, along with all integrations around it, capable of front-end development (UX, CSS, and mobile) and back-end development (API, ETL, database). Provide feasibility analysis on potential projects. Build and maintain systems based on applications architectures to improve business processes and in alignment or support of critical business strategies. Assess the business and organizational implications of key application technology alternatives for wide-impact initiatives to recommend appropriate strategic action. Facilitate continued process improvements within the team. Determine organizational impact of software maintenance issues and develop an overall strategy to address them. Integrate activities with business units and collaborate to ensure project costs and schedules are properly estimated and controlled. Telecommuting permitted.
Requirements: Requires a Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or foreign equivalent and five (5) years of experience as a Software Developer, Software Engineer, or related position.
Experience must include: Advanced experience with the latest .NET framework (C#) or Drupal CMS; Proven ability to manage complex integrations with external vendors, enterprise APIs, and platforms including Salesforce; Experience managing scalable cloud environments and infrastructure automation; Working with automated testing frameworks including Behat, PHPUnit, and functional testing, with ability to maintain comprehensive test suites; Implementing CI/CD pipelines using tools including Travis CI or GitHub Actions; Expertise in backend optimization, performance tuning, and automation using Varnish, Memcached, Solr, and shell scripting; and Writing scripts for deployment automation, asset management, and backend process efficiency.
Compensation Pay Disclosure:
Voya is committed to pay that’s fair and equitable, which means comparable pay for comparable roles and responsibilities.
The below annual base salary range reflects the expected hiring range(s) for this position in the location(s) listed. In addition to base salary, Voya offers incentive opportunities (i.e., annual cash incentives, sales incentives, and/or long-term incentives) based on the role to reward the achievement of annual performance objectives. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Voya Financial is willing to pay at the time of this posting.
Actual compensation offered may vary from the posted salary range based upon the candidate’s geographic location, work experience, education, licensure requirements and/or skill level and will be finalized at the time of offer. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked.
$151,000
Be Well. Stay Well.
Voya provides the resources that can make a difference in your lives. To us, this means thriving physically, financially, socially and emotionally. Voya benefits are designed to help you do just that. That’s why we offer an array of plans, programs, tools and resources with one goal in mind: To help you and your family be well and stay well.
What We Offer
- Health, dental, vision and life insurance plans
- 401(k) Savings plan – with generous company matching contributions (up to 6%)
- Voya Retirement Plan – employer paid cash balance retirement plan (4%)
- Tuition reimbursement up to $5,250/year
- Paid time off – including 20 days paid time off, nine paid company holidays and a flexible Diversity Celebration Day.
- Paid volunteer time — 40 hours per calendar year
Critical Skills
At Voya, we have identified the following critical skills which are key to success in our culture:
- Customer Focused: Passionate drive to delight our customers and offer unique solutions that deliver on their expectations.
- Critical Thinking: Thoughtful process of analyzing data and problem solving data to reach a well-reasoned solution.
- Team Mentality: Partnering effectively to drive our culture and execute on our common goals.
- Business Acumen: Appreciation and understanding of the financial services industry in order to make sound business decisions.
- Learning Agility: Openness to new ways of thinking and acquiring new skills to retain a competitive advantage.
Equal Employment Opportunity
Voya Financial is an equal-opportunity employer. Voya Financial provides equal opportunity to qualified individuals regardless of race, color, sex, national origin, citizenship status, religion, age, disability, veteran status, creed, marital status, sexual orientation, gender identity, genetic information, or any other status protected by state or local law.
Reasonable Accommodations
Voya is committed to the inclusion of all qualified individuals. As part of this commitment, Voya will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please reference resources for applicants with disabilities.
See All 446+ Senior Mainframe Developer Jobs in Connecticut
Find roles in Connecticut that match your experience and apply in just a few clicks.
Find JobsSenior Mainframe Developer Jobs by City in Connecticut
Where Connecticut roles are concentrated, by current openings.
Senior Mainframe Developer Job Market in Connecticut
A snapshot from current Connecticut openings, updated as new roles post.
Who's Hiring
- CVS Health29

- Travelers28

- Yale University22

- Thermo Fisher Scientific18

- KPMG17

Top Industries Hiring
- Consulting & Professional Services92
- Healthcare & Medical Services67
- Insurance62
- Accounting & Auditing36
- Technology & Software29
What Connecticut Employers Look For
The qualifications that appear most often in senior mainframe developer jobs across Connecticut.
- Five or more years of COBOL or PL/I development on IBM z/OS mainframe environments
- Proficiency with JCL, CICS, DB2, VSAM, and batch job scheduling tools such as CA-7 or TWS
- Experience with IBM Rational Developer for z Systems or similar mainframe IDEs
- Ability to analyze, debug, and optimize large-scale legacy batch and online transaction systems
- Familiarity with mainframe security frameworks including RACF, ACF2, or Top Secret
- Bachelor's degree in computer science, information systems, or a related technical discipline
Senior Mainframe Developer Jobs in Connecticut: Frequently Asked Questions
How many senior mainframe developer jobs are there in Connecticut?
There are 446+ senior mainframe developer openings in Connecticut on Migrate Mate as of June 2026, with the most roles in Hartford, Stamford, and New Haven. New positions post regularly as employers across Connecticut hire.
How much do senior mainframe developers make in Connecticut?
Senior mainframe developers in Connecticut earn a median of about $134,120 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $85,930 for the lowest 10% to over $205,160 for the top 10%. Pay rises with experience, specialty, and employer.
Which Connecticut cities have the most senior mainframe developer jobs?
Hartford, Stamford, and New Haven have the most senior mainframe developer openings in Connecticut right now, with additional roles spread across smaller metros statewide.
Which companies hire senior mainframe developers in Connecticut?
Employers hiring senior mainframe developers in Connecticut include CVS Health, Travelers, and Yale University, based on current listings on Migrate Mate as of June 2026.
Are there remote senior mainframe developer jobs in Connecticut?
Yes. About 30% of senior mainframe developer openings tied to Connecticut are remote or hybrid as of June 2026. The rest are on-site roles based in Connecticut metros.
How do I apply for senior mainframe developer jobs in Connecticut?
You can apply to senior mainframe developer jobs in Connecticut directly on Migrate Mate. Search the listings above, find roles that match your experience and preferred Connecticut location, then apply to each one that fits.
See All 446+ Senior Mainframe Developer Jobs in Connecticut
Find roles in Connecticut that match your experience and apply in just a few clicks.
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