Sr. Application Developer - (Java / AWS / Payment Systems / Leadership)

08/23/2026

Address:

33 Dundas Street WestTechnology

Drives the overall software development lifecycle including working across functional teams to transform requirements into features, managing development teams and processes, and conducting software testing and maintenance. Specific project areas of focus includes translating user requirements into technical specifications, writing code and managing the preparation of design specifications. Supports system design, provides advice on security requirements and debugs business systems and service applications. Applies deep knowledge of algorithms, data structures and programming languages to develop high quality technology applications and services - including tools, standards, and relevant software platforms based on business requirements.

Key Responsibilities:

• Lead hands-on design and development for payment API services

• Build secure, scalable, resilient, event-driven solutions using Amazon Web Services Lambda, DynamoDB, EventBridge, CloudWatch, SNS/SQS…etc.

• Design and review solutions for error handling, retries, idempotency, timeout strategies, monitoring, logging, and operational readiness.

• Develop cloud-native services using Node.js and serverless patterns where appropriate.

• Partner with product, business analysis, quality engineering, architecture, and support teams to deliver robust production-ready solutions.

• Support adoption of generative AI for engineering productivity, documentation, design support, and test acceleration.

Qualifications:

• Strong hands-on experience in enterprise software engineering, including senior or lead-level development responsibility

• Strong experience building API services, microservices, and event-driven cloud services

• Strong experience with Amazon Web Services, especially Lambda, DynamoDB, EventBridge, CloudWatch, SNS/SQS

• Strong experience with Node.js for service development is preferred.

• Solid understanding of resilience engineering, including retries, idempotency, timeout handling, observability, and recovery design

• good understanding of secure software design, including authentication, authorization, encryption, secrets management, and data protection

• Experience in payments, wire processing, or financial services platforms is preferred

• Experience with AI-assisted software delivery is preferred

$75,900.00 - $141,900.00Salaried

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.