api developer jobs in Toronto

Build OSOR application enhancements as a Senior .NET API Developer in a provisionally hybrid assignment, using ASP.NET and Microsoft development tools. This senior position requires 10+ years of .NET experience. You will support a new OSOR-NSOR data exchange interface and related application work. The assignment covers design, development, testing,...

Build tested applications with C#, .NET, and REST APIs as a Senior Software Developer focused on API development and integration.This senior developer translates technical specifications into working software. The work includes programming, unit testing, troubleshooting, and application support. You will develop secure .NET applications, collaborate...

Select how often (in days) to receive an alert: Create Alert Date: Oct 9, 2026 Location: Toronto, ON, CA Company: NTT DATA Services NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, We are currently seeking a ...

Req ID: 389309OnBase API Developer - Remote Canada Position We are looking for an OnBase API Developer with strong experience in Hyland OnBase, API integrations, and enterprise application development. The ideal candidate should have hands-on expertise in building, enhancing, and supporting integrations between OnBase and other enterprise systems...

A technology firm in Toronto is seeking a Senior Software Developer to design and implement REST APIs in a complex enterprise environment. The ideal candidate has over 5 years of experience in API development and integration, strong skills in platforms like IBM API Connect and a solid understanding of microservices. This role requires excellent...

Req ID: 389309 OnBase API Developer - Remote Canada Position We are looking for an OnBase API Developer with strong experience in Hyland OnBase, API integrations, and enterprise application development. The ideal candidate should have hands-on expertise in building, enhancing, and supporting integrations between OnBase and other enterprise systems using...

A leading software development company in Toronto is seeking a Senior Software Developer specializing in API development. The ideal candidate will have at least 4 years of experience in C# and 3 years in .NET Core or .NET 5+. Responsibilities include translating technical specifications into applications and collaborating across teams. This role requires...

Select how often (in days) to receive an alert: Create Alert Date: Oct 9, 2026 Location: Toronto, ON, CA Company: NTT DATA Services NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, We are currently seeking a OnBase API...

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of...

Turn business requirements into API solutions at MaintainX, using connectors, data transformation, and software development expertise for client integrations. As an Integration Developer, you will work alongside Integration Consultants on custom solutions for MaintainX clients. The position combines technical design with customer communication, quality...

Work on Java REST API development, HL7/FHIR integration, and tested software applications from the 5700 Yonge St office weekly. This Junior Software Developer assignment supports full stack delivery across Angular, Spring Boot, Java, databases, and web services. You will design, implement, troubleshoot, and document applications while collaborating with IT...

Role: API Developer Hybrid: 2 days in office API development using REST / JSON (and SOAP if applicable) Java / Spring Boot API Gateway experience (Azure/AWS API Gateway) API security: OAuth 2.0, JWT, SSO, API key management API documentation: Swagger / OpenAPI Integration experience with microservices and backend systems Experience with Postman, unit...

A tech company in Toronto is seeking an experienced API Developer for a hybrid role that requires working in the office two days a week. The successful candidate will utilize their expertise in API development with REST / JSON, Java, and Spring Boot, while ensuring robust security measures such as OAuth 2.0. Familiarity with API documentation and integration...

A leading software development company in Toronto is seeking a Senior Software Developer specializing in API development. The ideal candidate will have at least 4 years of experience in C# and 3 years in .NET Core or .NET 5+. Responsibilities include translating technical specifications into applications and collaborating across teams. This role requires...

Application Deadline:10/30/2026Address:33 Dundas Street WestJob Family Group:TechnologyHybrid role (2 days/week in office). Out of province candidates should consider relocating. This role is not eligible for Virtual/Remote work.Drives the overall software development lifecycle including working across functional teams to transform requirements into...

OnBase API Developer - Remote Canada Position NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization. Key Responsibilities Design, develop, and support OnBase integrations with internal and external enterprise applications. ...

Build RESTful API integrations and reusable front-end components as a Senior Full Stack Software Developer, working two to three days weekly onsite.This role seeks a senior developer with 10+ years of experience across RESTful APIs, Swagger files, AngularJS, and front-end interfaces. You will create self-contained modules, develop unit tests, fix code...

Lead REST API integration and application troubleshooting as a Senior Software Developer, working with Apigee, SOAP conversion, and security frameworks.This senior developer designs, codes, tests, and implements Web and Rich Internet Applications. You will support system integration, scripting, gateways, migrations, and technical assistance during software...

OnBase API Developer - Remote Canada PositionNTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us.If you want to be part of an inclusive, adaptable, and forward-thinking organization.Key ResponsibilitiesDesign, develop, and support OnBase integrations with internal and external enterprise applications.Build and...

Strengthen Salesforce integrations and platform performance with Altus Group, working remotely with a preference for Toronto-based candidates.As a Salesforce Platform Developer reporting to the Director of Enterprise Applications, you will support enterprise solutions across Altus Group’s Salesforce platform. Your work connects Salesforce with other...