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Senior Mainframe Developer

Thermo Fisher Scientific

Ottawa, Ontario, Canada Full time July 07, 2026

Opportunity Description

  • Lead the design, development, testing, implementation, and maintenance of applications using COBOL, CICS, JCL, VSAM, IDMS and SORT utilities
  • Own and drive end-to-end delivery of projects, enhancements, defects, and production fixes, ensuring quality, timeliness, and business alignment
  • Analyze business requirements and translate them into scalable, maintainable, and reliable technical solutions
  • Prepare technical design documents, impact assessments, implementation plans, data flow analysis, and interface specifications
  • Collaborate with business stakeholders to understand requirements, identify risks, and propose practical and strategic solutions
  • Mentor and guide junior and intermediate developers, conduct code reviews, and promote engineering standards and best practices
  • Act as a trusted technical resource for application knowledge, design guidance, code quality, troubleshooting, and delivery risk management
  • Lead troublesho...
  • Full time Computer Occupations

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