Senior Mainframe Developer

• 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 troubleshooting, root-cause analysis, and resolution of complex production issues, ensuring minimal business impact
• Lead or contribute to modernization and integration initiatives, including impact assessment, interface design, data flow analysis, API or middleware integration, and safe migration strategies
• Participate in and support release planning, deployment, post-production validation, and operational readiness activities
• Participate in an on-call support rotation, including occasional weekends or off-hours
• Ensure adherence to development standards, documentation, security, audit, and compliance requirements
• Collaborate effectively with global teams, including onshore, offshore, business, QA, infrastructure, architecture, support, and cross-functional partners
• Proactively identify risks, dependencies, technical debt, and opportunities to improve system stability, delivery effectiveness, and team capability

Required QualificationsBachelor's Degree holder with 8+ years of hands-on Mainframe application development experience

• Strong hands-on expertise in:COBOLCICSJCLVSAMIDMS/DB2SORT utilities
• Excellent understanding of designing and developing applications in Mainframe technologies
• Strong experience supporting both batch and online mainframe applications
• Strong solutioning mindset with ability to design and implement technical solutions
• Demonstrated ownership mindset with the ability to work through ambiguity, proactively identify risks, and drive issues to closure
• Ability to quickly learn complex legacy applications, business processes, data flows, and integration points
• Willing to provide application support as needed and on rotation
• Ability to collaborate with multiple business teams and solve complex issues
• Strong analytical and problem-solving abilities
• Excellent communication, collaboration, and stakeholder-management skills
• Experience with enterprise systems integration
• Knowledge of security best practices and compliance requirements
• Ability to work independently and as part of a distributed team
• Strong team orientation with the ability and willingness to mentor team members and raise overall team capability

Preferred Qualifications

• Exposure to RPG
• Experience with Lotus Notes application development or support
• Understanding of API development, integration, or modernization strategies
• Experience with MQ, middleware, file-transfer patterns, or enterprise integration approaches
• Familiarity with Agile/Scrum methodologies
• Experience working inorder management, fulfillment, supply chain, finance, or other high-volume transactional systems
• Strong experience in production support and incident management
• Experience with tools such as TSO/ISPF, File-AID, Xpediter, Endevor, Changeman, Control-M, CA7, or similar mainframe development and scheduling tools
• Experience working with globally distributed teams, including onshore, offshore, and cross-functional delivery partners

Work Environment

• Location: Ottawa, Canada
• Work Model: Hybrid work model with a combination of onsite and remote work, as defined by team and business needs
• Support Expectations: Participation in a shared on-call rotation, including occasional weekends or off-hours support

What Success Looks LikeThe successful candidate will:

• Successfully leads projects and delivers high-quality, scalable, and maintainable solutions
• Provides effective design solutions aligned with business needs, system architecture, and long-term technology direction
• Acts as a technical mentor and go-to person for application knowledge, design guidance, code quality, troubleshooting, and delivery risk management
• Demonstrates strong leadership, ownership and accountability in delivery and production support
• Engages proactively with business stakeholders and adds value in discussions
• Quickly learns complex systems, business processes, and technical dependencies
• Identifies risks, technical debt, and improvement opportunities before they become delivery or production issues
• Continuously learns, explores new approaches, and drives problem-solving initiatives
• Contributes to team success, system stability, and modernization efforts
• Supports a positive, collaborative, and team-first culture by sharing knowledge, mentoring others, and helping the team succeed

Compensation

The estimated annualized pay range for this position in Ontario is $85,–$114,