42,471+ Sr Api Developer Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Sr. API Developer

TAre you an experienced API Developer looking to make a direct impact on critical integration projects? Apply Now! Working with one of our top financial clients, this role calls for a Senior API Developer. This position involves developing and supporting RESTful APIs within a high-profile insurance ...

Sr. API Developer

TAre you an experienced API Developer looking to make a direct impact on critical integration projects? Apply Now!Working with one of our top financial clients, this role calls for a Senior API Developer. This position involves developing and supporting RESTful APIs within a high-profile insurance tech ...

Sr. API Developer

TAre you an experienced API Developer looking to make a direct impact on critical integration projects? Apply Now! Working with one of our top financial clients, this role calls for a Senior API Developer. This position involves developing and supporting RESTful APIs within a high-profile insur ...

RQ09605 Sr. Software Developer API

About the job RQ09605 - Sr. Software Developer - API RQ09605 - Sr. Software Developer - API Downtown, Toronto On-site (hybrid, depending on HM requirements for the project) Security Level: CRJMC (must get clearance before start date) <li ...

RQ09605 Sr. Software Developer API

About the job RQ09605 - Sr. Software Developer - APIRQ09605 - Sr. Software Developer - API Downtown, Toronto On-site (hybrid, depending on HM requirements for the project) Security Level: CRJMC (must get clearance before start date) A senior API Software Developer with 8+ years of experience will be re ...

RQ09885 Sr. Software Developer API

About the job RQ09885 - Sr. Software Developer - API RQ09885 - Sr. Software Developer - APIOn-site (During the duration of the assignment, you will be under the discretion of the Hiring Manager's requirements for the Project you are assigned to)Contract 1 year, 2 possible extensions ...

RQ09885 Sr. Software Developer API

About the job RQ09885 - Sr. Software Developer - API RQ09885 - Sr. Software Developer - API On-site (During the duration of the assignment, you will be under the discretion of the Hiring Manager's requirements for the Project you are assigned to) Contract 1 year ...

RQ09964/RQ09965 Sr. Software Developer API

RQ09964/RQ09965 - Sr. Software Developer - API About the job RQ09964/RQ09965 - Sr. Software Developer - API RQ09964/RQ09965 - Sr. Software Developer - API Contract 1 year 2 Openings Security Level: CRJMC Scope <li ...

RQ09964/RQ09965 Sr. Software Developer API

RQ09964/RQ09965 - Sr. Software Developer - APIAbout the job RQ09964/RQ09965 - Sr. Software Developer - APIRQ09964/RQ09965 - Sr. Software Developer - API Contract 1 year 2 Openings Security Level: CRJMC Scope A senior API Software Developer with 8+ years of experience will be responsible for c ...

API Developer

Role: API Developer (REST, Microservices, Cloud) Location: Toronto, ON - Hybrid Responsibilities Lead and contribute to the migration of existing Azure / PCF applications to Atlas , including analysis, refactoring, and deployment. Refactor ba ...

API Developer

Role: API Developer (REST, Microservices, Cloud)Location: Toronto, ON - HybridResponsibilitiesLead and contribute to the migration of existingAzure / PCF applications to Atlas , including analysis, refactoring, and deployment.Refactor backend services and UI comp ...

API Developer

Role: API Developer (REST, Microservices, Cloud) Location: Toronto, ON - Hybrid Responsibilities Lead and contribute to the migration of existing Azure / PCF applications to Atlas , including analysis, refactoring, and deployment. ...

API Senior Developer

Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity ...

Senior Developer API

On behalf of our Public Sector client, Wirehead has a new contract opportunity for a Senior Developer. Client: Government Type: Contract Role: Senior Developer API Term: 12 Months + extension Pay Rate: Open Start date: 2-3 weeks Location: Hybrid (21 C ...

API Developer (Toronto)

API Developer Location: Scarborough - Hybrid: 3-4 days in-office Anchor days: Thursday. Flexible other days Contract Duration: 6 months with extension Business group: Client Engineering - Microservices Project: CIS API software currency modernization project. Resp ...

Senior Developer API

On behalf of our Public Sector client, Wirehead has a new contract opportunity for a Senior Developer.Client: GovernmentType: ContractRole: Senior Developer APITerm: 12 Months + extensionPay Rate: OpenStart date: 2-3 weeksLocation: Hybrid (21 ...

API Senior Developer

Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity is re ...

API Senior Developer

Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity ...

Senior Developer API

On behalf of our Public Sector client, Wirehead has a new contract opportunity for a Senior Developer. Client: Government Type: Contract Role: Senior Developer API Term: 12 Months + extension Pay Rate: Open Start date: 2-3 weeks ...

Sr. Technical Writer, API Docs

Why Consider this Job Opportunity: Salary range up to $109,000 (base salary) + bonus + equity + benefits Opportunity for career advancement and growth within a cutting-edge technology company Work in a collaborative environment with a focus on innovation ...

API Developer Python, AWS

Overview API Developer Responsibilities Design, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regu ...

Senior Software Developer API

Do you have extensive experience in designing, building, and consuming REST APIs, including experience with API documentation and testing? Do you have experience with asynchronous communication, multi-threading? If so, this would be a great opportunity for you! Our client is looking for a Senior So ...

PL/SQL & API Developer

About CMiC Headquartered in Toronto, CMiC is a software company focused on the Construction industry. We have built a comprehensive platform for construction companies to manage their most important workflows. Our customers have their choice of a SaaS or Private Hosted platform that includes indu ...

Senior Java API developer

Associate Business Partner - Senior Talent Acquisition - IT Financial Services at Iris Software Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Java API developer for a long-term opportunity. W ...

API Developer Python, AWS

OverviewAPI Developer ResponsibilitiesDesign, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regular testing and troubleshooting Work with oth ...

PL/SQL & API Developer

About CMiC Headquartered in Toronto, CMiC is a software company focused on the Construction industry. We have built a comprehensive platform for construction companies to manage their most important workflows. Our customers have their choice of a SaaS or Private Hosted platform that includes industry focused mod ...

Senior Java API developer

Associate Business Partner - Senior Talent Acquisition - IT Financial Services at Iris Software Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire aJava API developerfor a long-term opportunity.Work Loca ...

API Developer Python, AWS

Overview API Developer Responsibilities Design, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regu ...

Senior Software Developer API

Do you have extensive experience in designing, building, and consuming REST APIs, including experience with API documentation and testing? Do you have experience with asynchronous communication, multi-threading? If so, this would be a great opportunity for you!Our client is looking for a Senior Softwar ...

API Developer Python, AWS

Overview API Developer Responsibilities Design, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regu ...

Senior Java API developer

Associate Business Partner - Senior Talent Acquisition - IT Financial Services at Iris Software Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Java API developer for a long-term opportunity. W ...

PL/SQL & API Developer

About CMiC Headquartered in Toronto, CMiC is a software company focused on the Construction industry. We have built a comprehensive platform for construction companies to manage their most important workflows. Our customers have their choice of a SaaS or Private Hosted platform that includes ...

API Developer Python, AWS

Overview API Developer Responsibilities Design, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regu ...

Senior Java API developer

Associate Business Partner - Senior Talent Acquisition - IT Financial Services at Iris Software Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Java API developer for a long-term opportunity. ...

Sr. Developer

Job Title: Sr. Developer Job ID: Job Location: Toronto, ON (2 days/week onsite) Job Travel Location(s): # Positions: 3 Employment Type: W2 Duration: Long Term # of Layers: 0 Work Eligibility: All Work Authorizations are Permitted – ...

Sr. Developer

Job Title: Sr. Developer Job ID: Job Location: Toronto, ON (2 days/week onsite)Job Travel Location(s):# Positions: 3Employment Type: W2Duration: Long Term# of Layers: 0Work Eligibility: All Work Authorizations are Permitted – No Visa Transfer ...

Sr. Developer

Job Title: Sr. Developer Job ID: Job Location: Toronto, ON (2 days/week onsite) Job Travel Location(s): # Positions: 3 Employment Type: W2 Duration: Long Term # of Layers: 0 Work Eligibility: All Work Authorizations are Permitted – ...

Sr. Developer

Job Title: Sr. Developer Job ID: Job Location: Toronto, ON (2 days/week onsite) Job Travel Location(s): # Positions: 3 Employment Type: W2 Duration: Long Term # of Layers: 0 Work Eligibility: All Work Authorizations are Permitted – ...

Sr. Developer

Job Title: Sr. Developer Job ID: Job Location: Toronto, ON (2 days/week onsite) Job Travel Location(s): # Positions: 3 Employment Type: W2 Duration: Long Term # of Layers: 0 Work Eligibility: All Wor ...

.Net Developer Payments, API development

Job DescriptionJob Title: .NET Full‑Stack DeveloperLocation: Toronto, ON – Hybrid (4 Days WFO) Duration: 12 months Essential Skills – Real‑Time Payments Deve ...

Software Developer (Java/Restful API)

Software Developer (Java/Restful API)ScotiabankTorontoRequisition ID: Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture.Business group: Canadian Digital Banking Engineering - Digital Payments – Provide microservices to mobile and web; deal with day-to-day ...

.Net Developer Payments, API development

Job Title: .NET FullStack Developer Location: Toronto, ON Hybrid (4 Days WFO) Duration: 12 months Essential Skills RealTime Payments Developer .NET Core with strong API development experience SQL REST API Azure services including: Azure Functions Cosmos DB Key Vault 810 years overall development experience Min ...

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