Mainframe Software Developer

Posting Start Date: 10/2/26 Join CPKC, North America’s first transnational railroad connecting U.S., Canada, and Mexico, where your career drives progress and safety is paramount. We connect communities, fuel economic growth, and provide meaningful work in a culture that values diversity, accountability, and pride. With opportunities for training, development, and advancement, you’re not just building a career—you’re part of something bigger. Together, we move goods, connect people, and create lasting change. Your future starts here. PURPOSE OF THE POSITION: Drive business success by designing, developing, testing, implementing, and maintaining robust software solutions on Mainframe Computer Systems. Deliver projects within an SDLC framework, support mission-critical applications, and foster best practices across the development team. This is a 7 month fixed term contract with possible extensions. POSITION ACCOUNTABILITIES: Analyze, implement, maintain, and document system and application softwareDiagnose, isolate, and resolve complex software issues; provide expert troubleshooting and problem fixingReview, modify, and test existing programming systems, ensuring reliable and efficient operation in large-scale environmentsLead needs analysis and requirement gathering for application development and implementationEnsure all delivered solutions align with business requirements and follow established SDLC methodologiesDevelop, code, and test new application programs and features; maintain thorough documentation of all development and revisionsShare knowledge—coach developers on best practices and provide code reviews for quality assuranceParticipate in 24/7 on-call support rotation to provide rapid response and resolution for business-critical systemsMonitor software health and performance, ensuring optimal application operation across the system lifecycleContribute to post-implementation reviews to foster continuous improvement POSITION REQUIREMENTS: Minimum 3 years of hands-on experience developing and supporting complex, integrated application systems for Mainframe systemsProficient with a variety of programming languages, including Cobol-DB2/IMS, JCL and strong unit testing skillsStrong understanding of SDLC processes and best practices PRE-EMPLOYMENT REQUIREMENTS: Background Investigation Criminal history checkEducation verificationProfessional references BECOMING A RAILROADER: As an employee with a North American presence, the possibility does exist that the location of your position may be changed based on organizational requirements. Management Conductor Program Becoming a qualified conductor or locomotive engineer is the single best way for a management employee to learn the business at CPKC. You may be required to obtain a certification or to maintain your current certification/qualification as a conductor or locomotive engineer. CULTURE OF INCLUSION: For our U.S. applicants, CPKC is an equal opportunity/affirmative action employer, inclusive of protected veterans and individuals with disabilities. For Canadian applicants CPKC is an employment equity employer committed to the principles of employment equity and inclusion. We encourage all qualified candidates to apply including: women, Black, Indigenous, People of Color (BIPOC), members of the LGBTQ+ community and people with disabilities. Accommodations for the job application process can be provided, as appropriate, upon request. All applicant information will be managed in accordance with the federal Personal Information Protection and Electronic Documents Act (PIPEDA). Req ID: 106420Department: Information Services & Network Service Centre (NSC)Job Type: Fixed TermPosition Type: Non-UnionLocation: Calgary, AlbertaCountry: Canada% of Travel: 0-10%# of Positions: 1Job Grade: 4Job Available to: Internal & External