Sr Full Stack Software Engineer Job Toronto area,Ontario Canada,Software Development

Job Title: Sr Full Stack Software Engineer

Duration: 1 Year Contract with strong chance of extension

Our client is seeking a Senior Full Stack Software Engineer with strong expertise in building scalable APIs, modern web applications, and cloud-native solutions. This role requires hands-on technical leadership & delivery, deep knowledge of event-driven architectures, and the ability to work iteratively in a highly agile environment.

Responsibilities

Design and implement highly scalable APIs using best practices.
Build and maintain applications using React, NestJS, and Spring Boot.
Develop event-driven architectures and microservices for distributed systems.
Deploy and manage applications on Azure Container Apps, configure APIM, and implement CI/CD pipelines through Azure Dev Ops.
Use Bicep for IaC to automate cloud resource provisioning.
Work with Docker for containerized deployments.
Design and optimize relational and No

SQL databases.
Productively use secure AI tools for assisted development while adhering to compliance and security best practices.
Work iteratively in very agile environments, adapting to changing business priorities.
Partner with cross-functional teams to deliver incremental value.
Hands-on delivery focused rather than waiting for complete requirements; delivering quickly and often.
Knowledge of using feature flags to deploy quickly.
Strong sense of shipping products to production instead of just development.
Building observable code using Azure monitoring and telemetry.

Qualifications

10+ years of extensive experience building scalable APIs.
8+ years of modern web application development using React and Node.js frameworks (NestJS preferred)
Experience building scalable Spring Boot APIs.
Experience with security best practices for APIs.
Expertise in event-driven architecture and microservices.
Strong understanding of cloud-native architectures & container-based development.
Hands-on experience with Ideally Azure Container Apps, APIM, Docker, and CI/CD pipelines via Azure Dev Ops. (OR similar AWS stack)
Experience with Infrastructure as Code (IaC), preferably Bicep or equivalent tools such as Terraform, ARM Templates, or Pulumi.
Solid database knowledge (SQL and No

SQL).
Ability to pivot quickly based on incremental business requirements.
Strong sense of ownership is required.
Plan and manage code merges, branching strategies, and releases.
Ability to explain complex technical subjects, drive solution discussions.
Strong analytical and problem-solving skills to troubleshoot and resolve complex technical issues.
Familiarity with Agile/Scrum methodologies.

Nice-to-Have Qualifications

Experience building discounting rules engines.
Familiarity with Tan Stack for advanced React state management.
Producing technical design documents, solution option analysis
Excellent communication and presentation skills
Balancing delivery vs. excellence, trade-offs, competing priorities
Technical Leadership, planning & organization skills, work planning through Agile tools (ADO, JIRA), plan technical debt resolution, continuous improvements
Experience with Application Insights, Log Analytics, distributed tracing, dashboards, alerting and telemetry-driven troubleshooting.