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Net Web Api Developer Jobs in Toronto, ON (NOW HIRING)

Flexstaf IT

Senior Web Developer

Toronto, ON

Application & API Development: Design, build, and maintain Web API services, REST Services, SOAP ... Backend Data Engineering: Write complex SQL queries, stored procedures, user-defined functions ...

New

Pacer Group

.Net Developer

Toronto, ON · Hybrid

NET 6+, and Web API development. * Strong experience in designing and developing enterprise-grade applications using ASP.NET MVC, RESTful APIs, and Microservices Architecture. * Proficiency in SQL ...

Infotek Consulting Inc.

.NET Developer - Wealth

Toronto, ON · Hybrid

CA$80 - CA$96/hr

NET Web Forms, ASP.NET Web API, and WCF Services. • Build and maintain responsive user interfaces ... NET Developer with a strong background in application security and penetration testing remediation ...

ThoughtStorm

Software Developer - API

Toronto, ON · On-site

Title Software Developer - API Description Responsibilities * Required to translate technical ... Converts web services from SOAP to REST or vice-versa * Resolves and troubleshoots technical ...

Foresters Financial Services

Web Developer

Toronto, ON · Hybrid

CA$59K - CA$84K/yr

Career Opportunity Role Title Web Developer Purpose of role The Web Developer is responsible for ... NET MVC, SQL Server, JavaScript, jQuery, Bootstrap CSS, Visual Studio, RESTful API and HTML * 3+ ...

Private AI

Junior Developer

Toronto, ON · On-site

Our platform is built from independently deployable services, including a web API layer and a ... As a junior developer, you'll get exposure to the full lifecycle of a production service, from API ...

CIBC US

Engineering Manager, API Development

Toronto, ON · Hybrid

Internally, this role operates as a Chapter Lead supporting API developers across multiple squads ... You have hands-on knowledge of Java/J2EE, Spring/SpringBoot, Web Services (SOAP, JSON, and RESTful ...

CIBC

Engineering Manager, API Development

Toronto, ON · Hybrid

Internally, this role operates as a Chapter Lead supporting API developers across multiple squads ... You have hands-on knowledge of Java/J2EE, Spring/SpringBoot, Web Services (SOAP, JSON, and RESTful ...

New

Pala Interactive

Senior Web Developer

Toronto, ON · On-site

The Senior Frontend Developer / Senior Web Developer will have primary responsibility for designing ... Experience with Facebook API's * Experience with logical data modeling and physical relational ...

Pala Interactive

Senior Web Developer

Toronto, ON

TheSenior Frontend Developer / Senior Web Developerwill have primary responsibility for designing ... Experience with Facebook API's * Experience with logical data modeling and physical relational ...

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All JobsNet Web Api Developer JobsNet Web Api Developer Jobs in Toronto, ON

Net Web Api Developer information

What is a .NET Web API developer?

A .NET Web API Developer is a software engineer who specializes in building and maintaining web APIs using Microsoft's .NET framework. These APIs enable different software systems to communicate over the web, often supporting front-end applications or mobile apps. The developer is responsible for designing, developing, testing, and deploying RESTful services that are secure, efficient, and scalable. They often work with technologies like C#, ASP.NET Core, and Entity Framework, and are skilled in integrating various data sources and services.

What are the key skills and qualifications needed to thrive as a .NET Web API developer?

To thrive as a .NET Web API Developer, you need solid programming skills in C#, experience with ASP.NET Core, and a good understanding of RESTful API design, typically supported by a degree in computer science or related field. Familiarity with development tools such as Visual Studio, version control systems like Git, and knowledge of cloud platforms (e.g., Azure) or certifications in .NET technologies are highly beneficial. Strong problem-solving abilities, effective communication, and the ability to work collaboratively make a developer stand out in this role. These skills ensure the creation of robust, scalable, and maintainable web services that meet business and user needs.

What are the most common challenges a .NET Web API developer faces when integrating APIs with front-end applications?

One of the most common challenges .NET Web API Developers encounter is ensuring seamless communication between the back-end APIs and diverse front-end frameworks. Issues such as handling CORS, authentication, consistent data formatting, and version control can arise during integration. Developers also need to coordinate closely with front-end teams to clarify API specifications and troubleshoot integration bugs. Proactive documentation, regular communication, and thorough testing are essential strategies to overcome these challenges, ensuring a smoother development workflow.

What is the difference between Net Web Api Developer vs ASP.NET Developer?

AspectNet Web Api DeveloperASP.NET Developer
Primary FocusDesigning and developing Web APIs for data exchangeBuilding web applications using ASP.NET framework
Required SkillsWeb API, C#, .NET, REST, JSONASP.NET, C#, MVC, Razor, Web Forms
Work EnvironmentBackend API development, server-side logicFull-stack or web application development
Common UsageCreating services for mobile apps, integrationsDeveloping enterprise web applications

While both roles involve .NET technologies, a Net Web Api Developer specializes in creating APIs for data exchange, whereas an ASP.NET Developer focuses on building complete web applications using ASP.NET frameworks. The roles often overlap but differ mainly in scope and primary responsibilities.

Are Net Web API developers in demand?

Net Web API developers are in high demand due to the widespread use of web services and cloud-based applications. Skills in C#, .NET framework, and RESTful API design are particularly valuable, and demand is expected to grow as businesses continue to develop scalable, secure web APIs. The role often requires knowledge of related technologies like SQL, Azure, and security protocols.

What are popular job titles related to Net Web Api Developer jobs in Toronto, ON?

For Net Web Api Developer jobs in Toronto, ON, the most frequently searched job titles are:

What job categories do people searching Net Web Api Developer jobs in Toronto, ON look for?

The top searched job categories for Net Web Api Developer jobs in Toronto, ON are:

Net Web Api Developer jobs near you
Infographic showing various Net Web Api Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 1% Internship, 81% Full Time, 11% Part Time, 1% Temporary, and 6% Contract. Highlights an 81% Physical, 6% Hybrid, and 13% Remote job distribution.

Senior Web Developer

Flexstaf IT

Toronto, ON

Full-time

Posted 3 days ago

New

Job description

We are seeking an experienced Web Services & Application Developer with strong C#, ASP.NET, and SQL Server capabilities to maintain, modernize, and enhance legacy web applications, REST services, and SOAP web services. In this role, you will bridge the gap between web application maintenance and backend service integration, ensuring system stability, building secure APIs, and optimizing complex database workflows.

Key Responsibilities
  • Application & API Development: Design, build, and maintain Web API services, REST Services, SOAP web services, and existing ASP.NET applications using C#, .NET Framework, HTML5, CSS3, JavaScript, and AJAX.
  • Service Integration & Modernization: Develop and consume RESTful APIs and SOAP/WCF web services to enable seamless integration across enterprise platforms and legacy architectures.
  • Backend Data Engineering: Write complex SQL queries, stored procedures, user-defined functions, triggers, and views in T-SQL, optimizing database performance and data exchange workflows.
  • Legacy Refactoring & Security: Identify performance bottlenecks in web applications and web services; refactor and optimize C# code and database scripts for performance, scalability, and security (e.g., OWASP compliance, SQL injection prevention).
  • System Support & Integration: Support system integration testing, debug web service communication, resolve production issues, and document technical architecture and API endpoints.
Required Qualifications
  • Experience: 5+ years of professional software development experience with C#, ASP.NET, Web Services, and Microsoft SQL Server.
  • Core Tech Stack: Deep proficiency in C#, ASP.NET, REST Services (Web API), and SOAP Services (WCF / ASMX), alongside front-end fundamentals (JavaScript, jQuery, HTML5, CSS3).
  • Web Services & API Design: Strong hands-on experience designing, consuming, and securing RESTful JSON endpoints and XML-based SOAP contracts (WSDL, XSD, SOAP envelopes).
  • T-SQL Mastery: Advanced skills in writing and optimizing complex T-SQL queries, stored procedures, execution plans, and database indexing to support service payloads.
  • Version Control: Experience with Git, Azure DevOps, or Team Foundation Server (TFS).
Preferred Qualifications
  • Experience migrating legacy ASP.NET applications and SOAP services to modern frameworks (ASP.NET Core, RESTful microservices, Angular, or React).
  • Deep understanding of IIS server configuration, SSL/TLS certificates, and API security authentication models (OAuth 2.0, JWT, API Keys, Basic Auth).
  • Knowledge of cloud platforms (Azure Web Apps, Azure API Management, Azure SQL) or C# unit testing frameworks (xUnit, NUnit, Moq)