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Senior Mainframe Developer Jobs in Whitby, ON (NOW HIRING)

... DevOps for deployment, and Git repositories. Understanding and experience with Spring Framework ... have: mainframe development experience and enterprise architectural knowledge/experience ...

Sr. Business Systems Analyst

Toronto, ON · On-site

CA$81K - CA$115K/yr

If you have an engineering mindset and a passion for deeply engaging with Journey partners to fully ... The ideal candidate brings a solid IT background-preferably in Mainframe-exceptional communication ...

Manager II, Business Analysis

Toronto, ON · On-site

CA$96K - CA$136K/yr

Operating in Agile routines, the Product Owner will align with senior management to follow a ... Advanced microservice and cloud patterns - understanding service mesh, chaos engineering, event ...

Showing results 21-28

Senior Mainframe Developer information

What are the key skills and qualifications needed to thrive as a senior mainframe developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

What are some common challenges faced by senior mainframe developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What is a senior mainframe developer?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.
What cities near Whitby, ON are hiring for Senior Mainframe Developer jobs? Cities near Whitby, ON with the most Senior Mainframe Developer job openings:
Infographic showing various Senior Mainframe Developer job openings in Whitby, ON as of August 2026, with employment types broken down into 79% Full Time, 3% Part Time, and 18% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Programmer Analyst Senior

Scotiabank

Toronto, ON

Full-time

PTO

Re-posted 14 days ago


Job description

Requisition ID: 255947 
Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture.

 As a Programmer Analyst within Core Banking Engineering, you will be responsible to develop and support technology solutions that support various products and business lines across Canadian Banking, delivering secure, reliable, scalable, and efficient systems as part of an agile team in a fast-moving environment.

Is this role right for you? In this role, you will:

   Support off hours pager on rotation basis
   Analyze highly complex business requirements
   generate technical specifications to design or redesign complex software components and applications
   Maintain, support, and enhance existing applications.
   Leverage industry best practices to design, test, implement and support a solution
   Assure quality security and compliance requirements are met for supported area
   Be flexible and thrive in an evolving environment
   Analyze, maintain security features for application development, servers, authentication, and procedures
   Adapt to change quickly and adjust work accordingly in a positive manner
   Work closely with all team members in agile lab and agile environment
   Be a true team player who values the perspectives and opinions of others while leading with humility and confidence
   Take accountability for results and exhibits a "can do attitude"
   Demonstrate a high level of emotional intelligence (self-awareness, self-regulation, empathy, motivation, and social skills)
   Have an appetite to continuously evolve and improve, to tackle difficult problems and seek/give constant feedback
   Embrace change and see it as an essential driver to solve complex issues
   Demonstrate flexibility and be able to move forward without having all of the answers
   Consistently seek to understand, meet, and deliver on customers' expectations

Do you have the skills that will enable you to succeed in this role? We'd love to work with you if you have:


   4+ years of experience in information technology, developing and supporting applications
   Strong Java, Unix shell skills - working in Eclipse based environments 
   Solid understanding of DevOps for deployment, and Git repositories. 
   Understanding and experience with Spring Framework 
   Experienced with Azure and/or GCP Cloud framework/system
   Assess and analyze technology options to evaluate solution alternatives that meet business needs 
   A positive attitude and a reliable, self-motivated, team player with excellent communication, problem-solving and analytical skills.
   SQL Databases and related security model
   Kotlin
   Strong understanding of cloud concepts and implementation
   Experience with API management and developing microservices
   Familiar with Network, LAN TCP/IP, security and communication protocol concepts
   Good to have: mainframe development experience and enterprise architectural knowledge/experience
   Undergraduate Degree in Computer Science or technical equivalent


What's in it for you?
Diversity, Equity, Inclusion & Allyship - We strive to create an inclusive culture where every employee is empowered to reach their fullest potential, respected for who they are, and are embraced through bias-free practices and inclusive values across Scotiabank. We embrace diversity and provide opportunities for all employee to learn, grow & participate through our various Employee Resource Groups (ERGs) that span across diverse gender identities, ethnicity, race, age, ability & veterans.
   Accessibility and Workplace Accommodations - We value the unique skills and experiences each individual brings to the Bank and are committed to creating and maintaining an inclusive and accessible environment for everyone. Scotiabank continues to locate, remove, and prevent barriers so that we can build a diverse and inclusive environment while meeting accessibility requirements. 
   Upskilling through online courses, cross-functional development opportunities, and tuition assistance. 
   Competitive Rewards program including bonus, flexible vacation, personal, sick days, and benefits will start on day one.
   Community Engagement - no matter where you choose to work from; we offer opportunities for community engagement & belonging with our various programs.

Location(s):  Canada : Ontario : Toronto 
Scotiabank is a leading bank in the Americas. Guided by our purpose: "for every future", we help our customers, their families and their communities achieve success through a broad range of advice, products and services, including personal and commercial banking, wealth management and private banking, corporate and investment banking, and capital markets.  
At Scotiabank, we value the unique skills and experiences each individual brings to the Bank, and are committed to creating and maintaining an inclusive and accessible environment for everyone. If you require accommodation (including, but not limited to, an accessible interview site, alternate format documents, ASL Interpreter, or Assistive Technology) during the recruitment and selection process, please let our  Recruitment team know. If you require technical assistance, please click here. Candidates must apply directly online to be considered for this role. We thank all applicants for their interest in a career at Scotiabank; however, only those candidates who are selected for an interview will be contacted.