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Description

Robert Half is seeking a Senior Mainframe / AWS Developer to support an established insurance and financial services organization. This role focuses on building APIs and integration layers to expose data from legacy mainframe systems, while supporting ongoing maintenance (KTLO) and new capability development.

This is not a cloud-first or large-scale modernization role. The mainframe remains the system of record, and AWS is used selectively to support integration and downstream capabilities. This is a contract-to-hire opportunity!

Job Details

+ Schedule: Core availability 9:00 AM – 3:00 PM PST

+ Duration: Initial 4-month contract; contract-to-hire (3–6 month evaluation period)

+ Location: Remote

Job Responsibilities

+ Develop, enhance, and maintain IBM mainframe applications supporting legacy insurance and retirement systems

+ Build and support APIs and integration layers to expose mainframe data and functionality to downstream platforms

+ Maintain and enhance COBOL-based systems, including batch processing and online transactions

+ Support KTLO (Keep the Lights On) work, production stability, and ongoing system maintenance

+ Design and implement AWS-based solutions as needed to support integrations and platform capabilities

+ Participate in technical design discussions to ensure system reliability, scalability, and long-term stability

+ Contribute to new capability development on top of existing legacy systems (not net-new policy platforms)

Requirements

10+ years of hands-on IBM mainframe development experience in production environments

Strong experience with:

+ COBOL

+ CICS

+ DB2

+ JCL

+ VSAM

Experience building or supporting APIs on the mainframe

Strong understanding of legacy systems, batch processing, and transaction-based architectures

Hands-on AWS experience is required, including the ability to design and build solutions using services such as:

+ EC2

+ Lambda

+ DynamoDB

+ S3

+ (AWS architect-level experience is not required)

Experience with SOAP and/or REST integrations

Ability to work independently in a distributed team environment without dedicated AWS-only engineers

Nice-to-Haves

+ Experience with Vantage or similar annuity / insurance policy administration systems

+ Prior experience in insurance or financial services environments

+ Familiarity with AI-assisted development tools

+ Experience supporting or working across multiple versions of COBOL

Technology Doesn't Change the World, People Do.®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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