Senior Software Engineer (Mainframe)

by TD Canada Trust

Reference #: 1503448
Position Type: Regular, Full-time
Remote work options: No
Location: London, Ontario
Date Posted: Aug 08, 2026
TD Canada Trust

Job Description

Job Description:

Key Accountabilities

  • Perform moderately complex to complex technical tasks independently, with appropriate guidance for highly complex or high-risk changes.
  • Develop program specifications; design, code, integrate, test, debug, and implement mainframe solutions in accordance with business, technical, and control requirements.
  • Support business inquiries and operational needs through small enhancements, maintenance, and break/fix implementations, including source code, JCL, batch cycle, and related configuration changes; contribute to peer code reviews as required.
  • Participate in quality management reviews, including reviews of designs, prototypes, technical specifications, and requirements artifacts, to ensure completeness, quality, and alignment with business needs.
  • Develop and maintain high-quality code in compliance with enterprise standards, support unit testing, system testing, integration testing, production implementation, and post-deployment stabilization activities.
  • Provide technical support during incident management by analyzing production incidents and outages, performing impact assessments, supporting recovery activities, and communicating clearly with technology and business stakeholders throughout resolution.
  • Contribute to the development and maintenance of processes that help prevent recurring issues, and support root cause analysis, problem determination, and timely incident resolution using appropriate quality and control measures.
  • Adhere to enterprise engineering frameworks, software development methodologies, release processes, and control standards applicable to mainframe development and delivery.
  • Actively identify and support continuous improvement, automation, and modernization opportunities across mainframe engineering practices, including code quality, testing, deployment, and operational efficiency.
  • Identify opportunities to improve efficiency, reduce operational costs, and enhance stakeholder experience through practical, well-reasoned technical recommendations and solutions.
  • Support and implement remediation actions to address performance, risk, audit, compliance, and governance issues within the application and production environment.
  • Keep team members and stakeholders informed of project status, delivery progress, risks, dependencies, and other relevant day-to-day updates.
  • Proficiency with Git and familiarity with enterprise source control, change management, release management, and deployment practices in regulated environments.
  • Strong communication skills with the ability to collaborate effectively across engineering, infrastructure, operations, and business teams.

Education:

Undergraduate degree in Computer Science, Engineering, or equivalent experience.

Must-Have Qualifications

  • Strong engineering background delivering enterprise applications, including mainframe solutions, batch processing systems, online transaction processing, and service-enabled integrations.
  • Undergraduate degree, Postgraduate degree or Technical Certificate
  • Strong academic background (e.g., computer science, engineering)
  • 7+ years of application development experience, including end-to-end design, development, testing, implementation, and production support.
  • Hands-on experience in application design and development, with strong working knowledge of mainframe technologies such as COBOL, JCL, CICS, DB2, VSAM, and batch processing frameworks.
  • IMS DB/DC, SAS, CA-7, SQL, IBM OS/390, Z/OS, TSO, ISPF, QMF, SPUFI, CLIST, File-aid, TIBCO, NDM, FTP, Endevor, Test Sets, Service Now, Microservice, API
  • Develop, enhance, and maintain solutions in support of engineering programs and projects within the assigned business and technology domain.
  • Strong knowledge of the relevant business domain, engineering frameworks, mainframe platforms, development tools, processes, and procedures used within the organization.

Preferred:

Experience in financial services or customer-focused service industries