As a Lead Mainframe Developer you will make an impact by leading the development, support, and modernization of critical mainframe applications supporting enterprise banking operations. You will be a valued member of the delivery team, working closely with client stakeholders, offshore teams, architects, business analysts, and production support teams to ensure the stability, performance, and continuous improvement of mission-critical systems. Lead the analysis, design, development, testing, implementation, and support of mainframe applications on the IBM z/OS platform.

Collaborate with business and technical stakeholders to understand requirements, assess impacts, and deliver effective solutions. Develop and maintain applications using COBOL, DB2, JCL, and VSAM technologies while ensuring adherence to coding and quality standards. Coordinate offshore delivery teams, review deliverables, and drive successful production implementations.

Based on this role’s business requirements, this is a hybrid position requiring 3 days per week in a client or Cognizant office in Toronto, Ontario . This may change based on the project you’re engaged in, as well as business and client requirements. 8+ years of hands‑on experience in mainframe development and support.



~ Strong expertise in COBOL, JCL, DB2, and VSAM within IBM z/OS environments. ~ Proven experience analyzing, designing, coding, testing, documenting, and supporting enterprise applications. ~ Experience leading technical teams and serving as an independent contributor on complex initiatives. ~ Ability to collaborate effectively with onshore and offshore teams in a client‑facing setting. ~ These Will Help You Stand Out Experience with CICS and IBM MQ (MQ Series).

Experience supporting large-scale technology transformation initiatives. Ability to influence design decisions with a strong focus on customer experience and operational excellence.

Experience driving continuous improvement and implementing best practices across application support and delivery teams. The annual salary for this position is between CAD $71,000 - $112,000 , depending on experience, qualifications, and other factors permitted by law. Medical, dental, and vision coverage Life and disability insurance Employee assistance program (EAP) Registered retirement savings and savings programs Paid vacation and company holidays Learning and professional development opportunities

📌 Lead Mainframe Developer (Mississauga)
🏢 Cognizant
📍 Mississauga