Mainframe developer

About the role

As a Mainframe Developer, you will make an impact by designing, optimizing, and modernizing mission-critical healthcare payer systems that support claims processing, member management, eligibility, billing, and provider operations. You will be a valued member of the technology team and work collaboratively with business stakeholders, product owners, architects, developers, and operations teams to deliver scalable, reliable, and compliant mainframe solutions.

In this role, you will:

• Design and implement scalable mainframe architectures utilizing COBOL, CICS, VSAM, DB2, and JCL to support critical healthcare payer applications.
• Partner with business and product teams to translate payer business requirements into robust technical solutions that improve claims processing, member services, and operational efficiency.
• Optimize CICS transactions, VSAM data structures, and DB2 databases to enhance system performance, availability, and data integrity.
• Develop and maintain JCL workflows and COBOL applications supporting batch and online processing across payer platforms.
• Conduct architecture reviews, impact assessments, and performance evaluations to ensure solutions remain secure, maintainable, and aligned with evolving business and regulatory requirements.
  

Work model

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a hybrid position requiring associates to work from a client or Cognizant office as determined by project needs in Mississauga, ON. . Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

What you need to have to be considered

• 4–6 years of hands-on experience designing and developing solutions using COBOL, CICS, VSAM, DB2, and JCL in enterprise mainframe environments.
• Strong knowledge of healthcare payer operations, including claims adjudication, eligibility determination, provider management, billing, and policy administration.
• Experience designing secure, scalable, and high-performance data solutions using DB2 and VSAM.
• Proven expertise developing and maintaining COBOL applications and JCL procedures for complex batch and online processing environments.
• Hands-on experience with CICS transaction processing, performance tuning, and system optimization to support business-critical applications.
  

These will help you stand out

• Experience performing architecture reviews, impact assessments, and modernization initiatives for large-scale mainframe environments.
• Knowledge of healthcare industry regulations, compliance requirements, and data privacy standards affecting payer operations.
• Ability to analyze system performance across multiple technology layers and implement solutions that improve reliability and operational efficiency.
• Strong collaboration and communication skills with experience working in cross-functional and hybrid delivery teams.
• Experience supporting high-volume transactional systems requiring exceptional availability, resilience, and scalability.
  

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.