Lead / Senior Mainframe Developer (Assembler)

Job# : 3022722

Job Description :

Lead / Senior Mainframe Developer

Apex Systems is a global IT services provider and our staffing practice has an opening for a Lead / Senior Mainframe Developer  to place at our client, a top Canadian Bank under the Personal & Business Banking portfolio.

Client :  A Top Canadian Bank

LOB : Personal & Business Banking

Terms :   6-monthContract to start, subject to extensions (mutli-year)

Location :  Hybrid 2+ days a week Downtown Toronto

Some Specific Functions of This Role :

• Lead projects through all SDLC stages, coaching more junior staff, ensuring the bank's code standards are maintained
• Work on complex projects impacting core banking operations
• Provide senior level technical analysis and support for E2E project teams
• Support on-call as needed

Qualifications :

About this Role :

This Lead / Senior Mainframe Developer role supports a major Canadian bank within its Personal & Business Banking portfolio. The position leads end‑to‑end SDLC delivery on complex, business‑critical mainframe initiatives, provides senior technical analysis and guidance to project teams, and mentors junior developers while ensuring adherence to the bank's coding standards. The role requires deep expertise in core banking systems and mainframe technologies, backed by 10–15+ years of design, analysis, and programming experience, along with strong analytical and organizational skills.

EEO Employer

Apex is an Equal Employment Opportunity / Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at   or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview :   Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses / books / seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.