Sr Application Software Developer - (Cloud Native/ AWS/ Lambda/ Java)

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This role drives the end-to-end software development lifecycle by collaborating across functional teams to translate user requirements into technical specifications and deliver high-quality software solutions. The Senior Developer will design, build, and maintain scalable, secure, cloud-native applications leveraging AWS services, backend programming languages, and enterprise integration platforms.

Key Responsibilities

• Translate complex user requirements into clear technical specifications and actionable development plans.
• Develop, test, and deploy backend services and APIs, ensuring alignment with security, performance, and quality standards.
• Collaborate with cross-functional teams to support system design, integration, and troubleshooting activities.
• Manage application lifecycle processes including release management, version control, and documentation.
• Continuously evaluate emerging technologies for suitability and impact on existing systems.
• Provide technical guidance and support to stakeholders and team members.
• Handle non-routine and complex issues independently, escalating when necessary.

Technical Expertise

• Programming Languages: Expert in Java (primary backend language); proficient with Node.js and Python.
• Cloud & Serverless Technologies: Hands-on experience with AWS Lambda, Amazon S3, and AWS API Gateway to build scalable serverless applications.
• Databases: Strong development experience with Oracle and PostgreSQL (preferably using AWS RDS).
• API Development & Integration: Skilled in designing and implementing RESTful APIs using AWS API Gateway and Lambda, capable of handling high-volume workloads.
• Middleware & Enterprise Integration: Experience with webMethods development is a strong advantage.

Qualifications

• Foundational skills: creative thinking, relationship management, emotional agility.
• Intermediate skills: quality assurance, cloud computing, microservices, requirements analysis, adaptability, communication, collaboration, analytical problem-solving, data-driven decision making.
• Advanced skills: programming, application integration, test-driven development, SDLC, troubleshooting, system integration.
• Typically 5–7+ years of relevant experience with a related post-secondary degree or equivalent education and experience.
• Demonstrated technical proficiency through hands-on delivery of complex, scalable cloud-native applications.

Focus of the Role

Design, develop, and maintain cloud-native, scalable applications that provide robust data storage, efficient API communication, and seamless integration across the AWS ecosystem, leveraging Java-based backend services, serverless AWS components, relational databases via AWS RDS, and enterprise middleware tools.

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: https://jobs.bmo.com/global/en/Total-Rewards

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 https://jobs.bmo.com/ca/en.

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.