Senior Mainframe z/OS Developer to support a key project for a financial institution.

Our financial client is looking for a Senior Mainframe z/OS Developer to support their key project.

Duration: Until September 30, 2025 (with a possibility of extension)

Work model: On-site in Toronto at least twice per week

Responsibilities:

Develop, maintain, and optimize mainframe applications using PL/I, JCL, DB2, and SQL.

Write and modify efficient, scalable, and well-structured mainframe code to meet business and technical requirements.

Utilize JCL (Job Control Language) to define and manage batch jobs, ensuring smooth execution and performance.

Design and optimize DB2 database structures, queries, and stored procedures for better performance and scalability.

Troubleshoot and resolve mainframe-related issues, including job failures, performance bottlenecks, and database inefficiencies.

Collaborate with the client's Business Team to understand business needs and translate them into technical solutions.

Implement best practices for performance tuning, data integrity, and system security in mainframe environments.

Document processes, technical designs, and operational procedures for future reference.

Must-Have Skills:

5+ years of hands-on experience working with mainframe technologies, including z/OS, PL/I, JCL, DB2, and SQL.

Strong understanding of mainframe batch processing, job scheduling, and database optimization.

Experience working in banking or financial institutions with exposure to core banking applications and transaction processing.