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Full Stack Developer

Job in Toronto, Ontario, C6A, Canada
Listing for: Avant Imaging and Integrated Media Inc.
Full Time position
Listed on 2026-09-24
Job specializations:
  • Software Development
    .NET Developer, Full Stack Developer, Backend Developer, Front End Developer
Salary/Wage Range or Industry Benchmark: 90000 - 130000 CAD Yearly CAD 90000.00 130000.00 YEAR
Job Description & How to Apply Below

Role Purpose

Reporting to the VP, Solutions & Delivery, we are looking for a talented and motivated Full Stack Developer – .NET to join our development team. The ideal candidate will have strong experience building scalable, secure, and high-performance web applications using the Microsoft .NET ecosystem, along with modern front-end technologies.

You will be responsible for designing, developing, testing, deploying, and maintaining end-to-end applications while working closely with product managers, business analysts, QA engineers, Dev Ops teams, and other developers.

Core Responsibilities
  • Design, develop, and maintain full-stack web applications using C#, .NET / .NET Core, ASP.NET Core, and Web API.
  • Build responsive and user-friendly front-end applications using React, Angular, Blazor, or similar modern JavaScript/C# frameworks.
  • Develop scalable RESTful APIs and integrate third-party services and enterprise systems.
  • Design and optimize relational databases using SQL Server, including tables, stored procedures, views, functions, and queries.
  • Implement secure authentication and authorization using technologies such as OAuth 2.0, OpenID Connect, JWT, and ASP.NET Core Identity.
  • Process and transform large fixed-width and delimited (CSV/flat) input files as part of data integration and batch workflows.
  • Generate large, well-structured XML output and associated XSD schemas for downstream systems and partners.
  • Integrate with document/PDF generation platforms such as Quadient, Exstream, or SmartCOMM to support customer communications.
  • Write clean, maintainable, reusable, and well-tested code following established coding standards and design patterns.
  • Participate in architecture and technical design discussions and contribute to application modernization initiatives.
  • Develop unit, integration, and automated tests to ensure application quality and reliability.
  • Troubleshoot and resolve application defects, performance issues, and production incidents.
  • Work with Dev Ops teams to support CI/CD pipelines, automated deployments, monitoring, and cloud infrastructure.
  • Collaborate with cross-functional teams to understand requirements and translate them into technical solutions.
  • Conduct code reviews and provide constructive feedback to team members.
  • Create and maintain technical documentation, API documentation, and development standards.
  • Stay current with emerging technologies and recommend improvements to development practices and application architecture.
Required Qualifications
Backend
  • Strong proficiency in C#
  • Hands‑on experience with .NET / .NET Core
  • Strong experience with ASP.NET Core
  • Experience developing RESTful Web APIs
  • Knowledge of Entity Framework Core
  • Understanding of dependency injection, middleware, configuration, logging, and application lifecycle
  • Good understanding of object-oriented programming and SOLID principles
  • Experience with common design patterns and clean architecture principles
  • Experience processing large fixed-width and delimited input files
  • Experience generating large XML files and XSD schemas
  • Experience integrating with PDF generation software such as Quadient, Exstream, SmartCOMM, or similar
Frontend
  • Strong experience with JavaScript / Type Script
  • Hands‑on experience with at least one modern framework:
    React, Angular, Vue.js, or Blazor (C#‑based)
  • Strong knowledge of HTML5, CSS3, and responsive web design
  • Experience consuming REST APIs and handling client-side state
  • Familiarity with frontend build tools and package managers such as npm
Database
  • Strong experience with Microsoft SQL Server
  • Proficiency in writing complex SQL queries
  • Experience with stored procedures, functions, views, indexes, and query optimization
  • Understanding of database design, normalization, transactions, and performance tuning
  • Experience…
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