Senior Development Lead - (Cloud /Payment Systems)

Application Deadline: 09/13/2026 Address: 33 Dundas Street West Job Family Group: Technology The Senior Software Development Lead provides hands-on technical leadership for the design, development, modernization and production stability of enterprise wire payment services. The role will mainly focus on the cloud-native applications while supporting integration with on-prem applications and upstream/downstream systems. The successful candidate will combine strong AWS serverless engineering capability with application design, coding, troubleshooting and delivery leadership. This person will guide internal and vendor developers, review designs and code, drive resilient implementation patterns, and remain actively involved from requirements and estimation through production implementation and post-release verification. Key Responsibilities Provide hands-on technical leadership for the design, development and modernization of wire payment services. Translate business and regulatory requirements into scalable, secure and resilient cloud-native solutions. Design, develop and review AWS serverless applications using Node.js, Lambda, DynamoDB, SQS, SNS, EventBridge, S3, APIs and AWS CDK. Lead solution design, code reviews, technical documentation, effort estimation and implementation planning. Establish engineering standards for resiliency, error handling, retry, recovery, observability, security and performance. Partner with QA on unit, integration, white-box, regression, performance, chaos and production-readiness testing. Diagnose complex production issues, lead root-cause analysis and ensure permanent corrective actions are implemented. Drive technology-currency, vulnerability and runtime remediation across application components and environments. Provide technical guidance to internal and vendor developers, ensuring quality, accountability and knowledge transfer. Promote automation and approved AI-assisted engineering practices to improve delivery speed, testing effectiveness and code quality. Required technical skills: AWS and cloud-native engineering AWS Lambda DynamoDB SQS and DLQ SNS EventBridge S3 API Gateway or enterprise API management CloudWatch or comparable logging and monitoring IAM and role-based security AWS CDK and Infrastructure as Code ECS/ECR knowledge for dashboard components Resiliency, high-availability and failure-recovery patterns Application development: Node.js and Java is a bonus REST APIs and backend service development Microservices and event-driven design Message-driven processing using Kafka, MQ or equivalent CI/CD pipelines and automated deployment Code review, troubleshooting and performance analysis Production incident diagnosis and root-cause analysis NFR, performance, chaos and fallback testing Observability, logging, tracing, alerting and telemetry Estimation, planning and dependency management Technical documentation and architecture review Preferred qualifications: AWS Certified Developer Associate or AWS Certified Solutions Architect Associate. Experience with wire payments, financial messaging or other high-value payment systems is a bonus Knowledge of ISO 20022, SWIFT, Fedwire, Lynx or payment-message processing is a bonus Experience applying AI-assisted development, test design, log analysis or code-quality tooling. Salary : $94,600.00 - $176,000.00 Pay Type: Salaried The above represents BMO Financial Group’s pay range and type. Salaries will vary based on factors such as location, skills, experience, education, and qualifications for the role, and may include a commission structure. Salaries for part-time roles will be pro-rated based on number of hours regularly worked. For commission roles, the salary listed above represents BMO Financial Group’s expected target for the first year in this position. BMO Financial Group’s total compensation package will vary based on the pay type of the position and may include performance-based incentives, discretionary bonuses, as well as other perks and rewards. BMO also offers health insurance, tuition reimbursement, accident and life insurance, and retirement savings plans. To view more details of our benefits, please visit: About Us At BMO we are driven by a shared Purpose: Boldly Grow the Good in business and life. It calls on us to create lasting, positive change for our customers, our communities and our people. By working together, innovating and pushing boundaries, we transform lives and businesses, and power economic growth around the world. As a member of the BMO team you are valued, respected and heard, and you have more ways to grow and make an impact. We strive to help you make an impact from day one – for yourself and our customers. We’ll support you with the tools and resources you need to reach new milestones, as you help our customers reach theirs. From in-depth training and coaching, to manager support and network-building opportunities, we’ll help you gain valuable experience, and broaden your skillset. To find out more visit us at . BMO is committed to an inclusive, equitable and accessible workplace. By learning from each other’s differences, we gain strength through our people and our perspectives. Accommodations are available on request for candidates taking part in all aspects of the selection process. To request accommodation, please contact your recruiter. Note to Recruiters: BMO does not accept unsolicited resumes from any source other than directly from a candidate. Any unsolicited resumes sent to BMO, directly or indirectly, will be considered BMO property. BMO will not pay a fee for any placement resulting from the receipt of an unsolicited resume. A recruiting agency must first have a valid, written and fully executed agency agreement contract for service to submit resumes.