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Api Developer Jobs in Toronto, ON (NOW HIRING)

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 ...

Aecon Group Inc.

Developer, SAP Integration

Toronto, ON · On-site

CA$90K - CA$105K/yr

Manage API lifecycle (design, publish, secure, monitor) via SAP API Management. * Implement event ... Having a CPI developer certification will be considered an advantage. * Understanding of ABAP ...

United Airlines

.NET Developer

Toronto, ON · On-site

OAuth 2.0, OpenID Connect, JWT, and API Gateway patterns Write unit, integration, and contract ... DevOps / Jenkins / GitHub Actions) Monitor and troubleshoot production systems using tools like ...

Pacer Group

.Net Developer

Toronto, ON · Hybrid

Job Title: .Net Developer Location: Toronto, ON Work Arrangement: Hybrid-3-4 Days onsite Employment ... NET Core/.NET 6+, and Web API development. * Strong experience in designing and developing ...

Mindlance

Python Developer

Toronto, ON · On-site

Full Stack Developer Duration : 12 Months (Need to go 3-4 times in week at onsite office) Location ... Experience in Python and rest API Development in Python framework. * Looking for someone coming ...

New

Smooth Commerce

Backend PHP Developer

Toronto, ON · On-site

CA$80K/yr

Backend PHP Developer About Smooth Commerce: Smooth Commerce is a dynamic B2B SaaS platform ... API & Backend Development Builds and maintains scalable backend services using PHP (primarily ...

Smooth Commerce

Backend PHP Developer

Toronto, ON · Remote

CA$80K/yr

Backend PHP Developer About Smooth Commerce: Smooth Commerce is a dynamic B2B SaaS platform ... API & Backend Development Builds and maintains scalable backend services using PHP (primarily ...

Media Resources

Be Seen First

Full Stack Software Developer

Mississauga, ON · On-site

CA$85K/yr

RESTful API design & integration, gRPC protocols. · Cloud & Infrastructure: AWS services, Docker containerization, Git (Kubernetes is a plus). · DevOps & Environments: Kubernetes, CI/CD pipelines ...

Citi

Full Stack Developer

Mississauga, ON

CA$94K - CA$141K/yr

The Applications Development Senior Programmer Analyst is an intermediate level position ... API Development: Proficiency in API and Web Services development using REST protocols. Testing:

Qubittron Consulting Inc.

SAP BTP Developer

Oakville, ON · Remote

CA$70K - CA$120K/yr

Job Overview: We are seeking a skilled SAP BTP Developer to join our dynamic team. The ideal ... Ensure seamless integration of BTP applications with third-party solutions using API Management and ...

Insight Global

MDM Developer

Toronto, ON · Hybrid

CA$72 - CA$80/hr

... API services. • Experience implementing customizations and enhancements within IBM MDM Server ... Insight Global is seeking an MDM Developer for a large financial institution undergoing a strategic ...

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Showing results 41-60

All JobsApi Developer JobsApi Developer Jobs in Toronto, ON

Api Developer information

See Toronto, ON salary details

$53K

$110.7K

$168.4K

How much do api developer jobs pay per year?

As of Sep 4, 2026, the average yearly pay for api developer in Toronto, ON is $110,679.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,707.00 and $125,495.00 per year, depending on experience, location, and employer.

What does an API developer do?

An API Developer is responsible for designing, building, and maintaining application programming interfaces (APIs) that enable software applications to communicate with each other. They ensure APIs are secure, scalable, and efficient, often working with technologies like REST, GraphQL, and SOAP. API Developers collaborate with front-end and back-end teams to integrate systems and improve functionality. Their role also involves debugging, optimizing performance, and documenting API usage.

What are the key skills and qualifications needed to thrive as an API developer?

To thrive as an API Developer, you need strong programming skills in languages like JavaScript, Python, or Java, as well as a solid understanding of RESTful and SOAP API protocols. Proficiency with tools such as Postman, Swagger, and familiarity with API security, cloud platforms, and relevant certifications (like AWS Certified Developer) are commonly required. Excellent problem-solving abilities, attention to detail, and clear communication skills help you collaborate effectively and navigate complex development challenges. These capabilities are crucial for building reliable, scalable APIs that enable seamless integration between diverse systems and deliver value to users and teams.

What does a typical workday look like for an API developer?

A typical workday for an API Developer involves designing, coding, and testing APIs to ensure they meet business requirements and function optimally. You’ll frequently troubleshoot integration issues, review code for security and performance, and collaborate closely with front-end, back-end, and product teams to address evolving project needs. Daily tasks may include updating API documentation, participating in agile sprint meetings, and responding to technical support queries from other developers or partners. The work environment is often dynamic and collaborative, with a strong emphasis on continuous learning and adapting to new technologies.

Are API developers in demand?

API developers are in high demand due to the increasing reliance on web services and integrations across industries. Skills in REST, SOAP, and cloud platforms like AWS or Azure enhance job prospects, and demand is expected to grow as digital transformation accelerates.

How much does an API developer make?

An API developer's salary varies based on experience, location, and skills, but typically ranges from $70,000 to $130,000 annually. Senior developers with expertise in RESTful APIs, security, and cloud platforms can earn higher salaries, especially in competitive markets.

Is an API developer a good career?

An API developer is a valuable role in software development, focusing on designing and maintaining application programming interfaces that enable different software systems to communicate. The role often requires knowledge of programming languages, API protocols, and tools like REST or GraphQL, and offers opportunities for growth in technology companies and development teams. It can be a stable and well-paying career path with demand driven by digital integration needs.

What are the most commonly searched types of Api Developer jobs in Toronto, ON?

The most popular types of Api Developer jobs in Toronto, ON are:

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

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

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

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

Api Developer jobs near you
Infographic showing various Api Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 86% Full Time, 4% Part Time, and 10% Contract. Highlights an 80% Physical, 7% Hybrid, and 13% Remote job distribution, with an average salary of $110,679 per year, or $53.2 per hour.

.NET Developer - Wealth

Infotek Consulting Inc.

Toronto, ON • Hybrid

CA$80 - CA$96/hr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

.NET Developer

Location: Toronto or Mississauga, ON

Contract Duration: September 1, 2026 to February 26, 2027

Work Model: Hybrid, 3 days per week in office

Rate: $80 to $96/hour

Employment Type: Contract

About the Opportunity

We are seeking an experienced .NET Developer, to join a technology team supporting enterprise applications within the financial services environment.

This role will focus heavily on analyzing, remediating, testing, and validating security vulnerabilities identified through penetration testing and security assessments across both legacy and modern .NET applications. The successful candidate will bring strong Microsoft application development expertise along with hands on experience in secure coding and vulnerability remediation.

Key Responsibilities

• Analyze and remediate vulnerabilities identified through penetration testing, vulnerability scans, and security assessments.

• Design, develop, enhance, and maintain applications using .NET Framework, .NET Core/.NET, ASP.NET Web Forms, ASP.NET Web API, and WCF Services.

• Build and maintain responsive user interfaces using Angular, React, JavaScript, jQuery, HTML5, CSS3, and Node.js.

• Support authentication and authorization solutions using Entra ID, Auth0, and AD LDS.

• Develop and optimize Microsoft SQL Server database objects, queries, and T SQL.

• Manage source code and CI/CD pipelines using GitLab and TFS/Azure DevOps.

• Configure, deploy, and support applications within IIS and Windows Server environments.

• Perform unit testing, code reviews, regression testing, and security validation.

• Collaborate with development, security, and technology teams to ensure vulnerabilities are effectively addressed and applications follow secure coding practices.

Required Qualifications

Must Have

• 4+ years of experience in Microsoft application development.

• Demonstrated experience supporting penetration testing remediation initiatives.

• Strong hands on experience with .NET Framework, .NET Core/.NET, and C#.

• Experience with ASP.NET Web Forms, ASP.NET Web API, and WCF Services.

• Front end development experience with Angular, React, JavaScript, jQuery, HTML5, CSS3, and Node.js.

• Strong Microsoft SQL Server and T SQL experience.

• Experience with GitLab, TFS/Azure DevOps, and CI/CD pipelines.

• Experience working with IIS and Windows Server.

• Knowledge of authentication and authorization technologies including Entra ID, Auth0, and AD LDS.

• Strong understanding of the OWASP Top 10 and secure coding practices.

Skills & Competencies

• Strong analytical and problem solving skills.

• Ability to investigate and resolve complex application security vulnerabilities.

• Strong attention to code quality, security, and testing.

• Ability to work independently while collaborating effectively within cross functional teams.

• Strong communication and technical documentation skills.

Interested?

If you are an experienced .NET Developer with a strong background in application security and penetration testing remediation, we would like to hear from you.

Apply or reach out to learn more about this contract opportunity in Toronto or Mississauga.

Apply