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Senior Full Stack Software Developer

Upstaff


Job Location:

Toronto - Canada

Monthly Salary: K 10 - 10
Experience Required: 5years
Posted: 1 September 2026 (17 hours ago)
Application Deadline: 29 November 2026
Vacancies: 1 Vacancy

Job Summary

Job Title: Senior Full Stack Software Developer
Client: Community Services Cluster
Location: Toronto Ontario
Work Arrangement: 100% Onsite 5 Days/Week
Contract End Date: March 31 2027
Openings: 1

Position Overview
We are seeking an experienced Senior Full Stack Software Developer to design develop test debug and maintain complex enterprise applications. The successful candidate will have strong expertise across modern technologies Azure Cloud services API development front-end development database technologies and DevOps practices.
This role requires a highly technical professional capable of translating technical specifications into scalable secure high-performing and accessible applications while collaborating effectively throughout the Software Development Life Cycle (SDLC).
This position requires onsite work in Toronto 5 days per week.
Key Responsibilities
  • Design develop test debug and maintain full-stack enterprise applications.
  • Design and continuously enhance data pipelines involving extraction transformation and loading activities.
  • Translate technical system specifications into high-quality tested software solutions.
  • Develop detailed programming specifications and reusable software components.
  • Conduct unit testing and ensure code quality throughout the development lifecycle.
  • Troubleshoot and resolve technical issues related to software applications implementations conversions and migrations.
  • Design and develop scalable front-end and back-end architectures.
  • Develop and integrate RESTful APIs and web services.
  • Integrate front-end user interfaces with APIs and backend services.
  • Design and model relational databases for web-based applications.
  • Build secure Azure Cloud applications and support CI/CD pipelines.
  • Ensure applications meet accessibility standards including WCAG AA and AODA compliance.
  • Collaborate with business stakeholders subject matter experts and technical teams.
  • Develop technical specifications system documentation and development documentation.
  • Participate in Agile/Scrum development environments and deliver work within sprint timelines.


Requirements
Mandatory Technical Skills
Full Stack & .NET Development
Candidates must have demonstrated extensive experience designing developing testing and debugging system enhancements using:
  • C#
  • / Core
  • Web API
  • Blazor WASM
  • Web Forms
  • .NET Core
  • .NET Entity Framework
  • LINQ
  • WCF
  • Crystal Reports
  • Redis Cache
  • xUnit
  • Moq
  • JavaScript / JScript
  • CSS
  • HTML
Azure Cloud & API Development
Strong hands-on experience with:
  • Azure Cloud Services
  • Azure API technologies
  • Azure Active Directory / Microsoft Entra ID
  • OAuth
  • Azure AD Security
  • Azure App Registrations and Policies
  • Azure Multi-Factor Authentication (MFA)
  • Single Sign-On (SSO)
  • Azure Functions
  • Azure App Service
  • Azure Container Instances
  • Azure Key Vault
  • Managed Identities
  • CORS configuration
  • Swagger
  • Postman
  • Thunder Client
  • API coding and testing
  • RESTful API development
DevOps & CI/CD
Demonstrated experience with:
  • Azure DevOps
  • CI/CD pipelines
  • DevOps/TFS
  • Agile/Scrum methodologies
  • Working in short development iterations
  • User stories and sprint-based delivery
  • Estimation and task tracking
Front-End Development & Accessibility
Strong experience developing modern responsive and accessible web applications using:
  • Angular / Angular Material Design
  • JavaScript
  • HTML
  • CSS
  • Multi-browser application support
  • WCAG AA compliance
  • AODA-compliant application development
  • Front-end integration with APIs
  • UX/UI fundamentals
Software Architecture & Development Practices
Demonstrated knowledge and experience with:
  • SOLID design principles
  • Dependency Injection
  • Simple Injector
  • Design patterns
  • Reusable and testable software components
  • NuGet and other package managers
  • Object-oriented programming
  • SDLC methodologies and standards
  • Application architecture
  • Unit testing and debugging
Database Technologies
Strong database development and design experience with:
  • Oracle
  • SQL Server
  • PL/SQL
  • PL/SQL Developer
  • TOAD
  • Relational database design and modelling
  • SQL development
Additional Technical Experience
Experience with the following technologies and concepts will be considered highly valuable:
  • Java programming for web applications
  • Java WebLogic
  • Tomcat
  • EJB
  • Servlet
  • REST and SOAP web services
  • Middleware and gateways
  • Internet-ready applications
  • Rapid Application Development (RAD)
  • Multi-threaded Windows Services
  • Product installation scripts
  • Application deployment and troubleshooting
  • Post-implementation support
General Skills & Qualifications
  • Extensive experience throughout the Software Development Life Cycle.
  • Experience in application design development implementation maintenance and troubleshooting.
  • Ability to work with structured development methodologies.
  • Strong experience with front-end and back-end integration.
  • Experience eliciting and documenting information from business stakeholders and subject matter experts.
  • Ability to analyze requirements and determine functional requirements for reports and system enhancements.
  • Experience supporting business users across multiple highly interdependent applications and data sources.
  • Experience working in complex multi-client or partner environments.
  • Ability to create technical specifications and development documentation.
  • Strong analytical problem-solving and decision-making abilities.
  • Excellent verbal and written communication skills.
  • Strong interpersonal and stakeholder management skills.
  • Proven ability to work collaboratively as part of a team and meet project deadlines.
  • Experience leading business users and supporting successful delivery of complex assignments.
Preferred Experience
  • Public sector experience.
  • Experience supporting education systems or education-sector projects.
  • Knowledge of Information Management principles concepts policies and practices.
  • Experience conducting design walkthroughs with project teams.
  • Ability to develop user and system documentation.
  • Knowledge of AODA regulations and accessibility standards.
Mandatory Candidate Profile
The ideal candidate must demonstrate strong hands-on experience across the following core areas:
C# .NET Core Web API Blazor WASM Azure Cloud Azure AD/Entra ID OAuth Azure Functions App Service Azure DevOps CI/CD REST APIs Swagger Postman Angular JavaScript HTML/CSS WCAG AA AODA Oracle SQL Server PL/SQL Entity Framework LINQ WCF Redis Cache xUnit Moq SOLID Dependency Injection Agile/Scrum


Required Skills:

Required Technical Skills: Esri GIS ArcMap ArcGIS Pro ArcGIS Pro SDK ArcObjects ArcGIS Portal ArcGIS Online File Geodatabases VertiGIS Geocortex GIS Infrastructure Enterprise GIS VBA C# .NET C SDK Development Functional Testing Integration Testing Regression Testing System Testing Performance Testing Load Testing Stress Testing UAT Test Strategy Test Planning Test Automation CASE Tools SDLC AODA Compliance GO-ITS Standards Enterprise Application Modernization


Required Education:

EducationOne of the following is required:Degree or Diploma in:CybersecurityComputer ScienceInformation SystemsNetwork EngineeringInformation TechnologyOREquivalent practical industry experience.