Remote Mainframe Developer

Post Date

Jan 28, 2026

Location

Hartford,
Connecticut

ZIP/Postal Code

06105
US
Apr 04, 2026 Insight Global

Job Type

Contract

Category

Software Engineering

Req #

HTD-4adcafc1-ddb1-4f30-82cc-303900743103

Pay Rate

$38 - $48 (hourly estimate)

Job Description

A healthcare insurance provider is looking for a Mainframe Developer to join their team remotely. The IBM Mainframe Developer will support multiple initiatives within a large internal data application as the organization transitions from a distributed mainframe environment to the GCP cloud. This role involves working with legacy mainframe components and contributing to the migration from UNIX on the mainframe to AIX DB2. A key responsibility includes analyzing and consolidating data dispersed across 20+ servers—where millions of rows are currently duplicated—by extracting data, removing redundancies, generating flat files, and reloading optimized database tables. The developer will partner closely with the team that manages data exchange across enterprise data lakes and upgraded applications, ensuring accuracy, performance, and reliability throughout the ecosystem. While mainframe expertise is essential, the position also offers opportunities to work with modern technologies such as Python and SQL as part of the broader application modernization and data engineering efforts.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Required Skills & Experience

5+ years of experience as a Mainframe Developer or related role
Expertise with Unix, DB2, AIX, SAS, Cobol
Previously worked on a mainframe migration effort
Previously worked on additional projects using newer technologies such as Python and SQL

Nice to Have Skills & Experience

Cloud expertise, preferably GCP
Previous healthcare experience

Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.