api jobs in Toronto

Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs. This architecture allows Cerebras to deliver industry-leading training and inference speeds; over 10 times faster than GPU-based hyperscale cloud inference services. This order of magnitude increase in speed is transforming the user experience of AI applications, unlocking...

Advance your career as a Senior Backend Developer focusing on CAD solutions, designing and enhancing REST APIs. Play a key role in ensuring system resilience through effective data handling and integrations. This Software Developer IV position requires deep expertise in backend development and API services. You will be responsible for building REST APIs,...

TD Securities seeks a Channels Architect to define and steward full stack architecture for GTB client experience and connectivity. You’ll drive micro-frontend shells, API contracts, and the integration layer, partnering with Data and Platform architects to enable reliable, scalable delivery.This is a hands-on role with code, design reviews, and strategic...

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.Our customers are our compass,...

Support the Ontario Business Registry API gateway rollout through expert test planning, execution, and documentation. Guide partners testing new ReST-based integrations.This senior Systems Testing and QA Specialist serves as a subject matter expert for OBR web service configuration, access, and functionality. You will support internal and external Ministry...

Why you’ll love working here:high-performance, people-focused culture our commitment that equity, diversity, and inclusion are fundamental to our work environment and business success, which helps employees feel valued and empowered to be their authentic selves learning and development initiatives, including workshops, Speaker Series events and access to...

Build machine learning APIs at Cerebras Systems using Python and distributed systems expertise to power heterogeneous AI inference services.As a Senior Software Engineer, you will evolve the ML API layer across inference APIs, model integration, and request routing. The work spans API design, model serving, and distributed systems. You will translate model...

Design enterprise APIs and platforms at Stripe Radar, connecting machine learning and AI capabilities with customer fraud prevention workflows.As a software engineer, you will help businesses understand and stop fraud and abuse. The work includes APIs, dashboards, user experiences, and infrastructure. You will own projects from technical design through...

Engineer secure APIs and high-volume integrations in a hybrid senior assignment, using Java, Oracle, Kubernetes, and performance tuning.This Software Developer assignment delivers full stack programming for ICON, PHIX, STIX, and Panorama-connected services. You will design application logic, develop code and scripts, and conduct unit tests. The assignment...

Lead complex API integrations as a Senior Solutions Engineer at OpenTable in Toronto, using REST APIs and system integration expertise. This hybrid role expects office attendance two days weekly.You will independently own sophisticated implementations across OpenTable’s partner and restaurant ecosystem. The work spans technical discovery, solution design,...

RQ09373 - Software Developer - API - SeniorAbout the job RQ09373 - Software Developer - API - SeniorResponsibilitiesRequired to translate technical systems specifications into working, tested. This includes:developing detailed programming specificationswriting and/or generating codecompiling data-driven programs, maintaining, and conducting unitAnalyzes,...

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...

Join Wealthsimple as a Product Manager focusing on API strategy and client connectivity. Shape how clients interact with financial data securely and effectively. In this pivotal role at Wealthsimple, you will manage the APIs that streamline client access to financial data. You are expected to formulate the strategy for our Public API while improving the...

A technology consulting firm in Toronto is seeking a Senior Software Developer to work in a hybrid capacity. The role involves enhancing existing applications, developing APIs, and ensuring high-quality, scalable software solutions. Candidates should have experience in cross-platform mobile development and integration with various systems. Strong...

Use strong Rust expertise to develop cryptographic workflows, REST and gRPC APIs, and scalable services for a non-human identity platform.As a Backend Software Engineer, you will build systems where TLS, X.509 certificates, identity, and secure communication are central. The position combines backend development with systems programming, asynchronous...

Lead REST API and integration analysis onsite in Toronto as a Senior Business Systems Analyst supporting TD’s Loyalty ecosystem.At TD, this senior position bridges business needs and technology solutions across distributed applications, partner integrations, and complex initiatives. You will work with Product Owners, Engineering, Quality Engineering,...

RQ08889 - Software Developer - API - Senior About the job RQ08889 - Software Developer - API - Senior Description A Note on Assignment Type: This position is currently listed as "Onsite"; however, the Assignment under this request will provisionally be "Hybrid", working 7.25 hours per calendar day, sometime between 8:00 AM and 5:00 PM (excluding breaks)...

Strengthen McAfee VPN through secure API development, production troubleshooting, and AWS support from a hybrid Waterloo or Toronto location.This Full-Stack Developer position spans services, APIs, and customer-facing product experiences. You will work primarily in Scala on JVM services, contributing to Java and JavaScript when needed. Your work will help...

Build RESTful APIs with Java and Oracle ADF BC REST at CMiC on York University’s Toronto campus. Apply object-oriented programming and SQL skills.As a Software Engineer, you will support CMiC’s front-end applications through API development. The work includes Java, Jersey, J2EE, REST over HTTP, and database-level development using SQL and PL/SQL. You...

Seeking a Data Engineer specializing in backend API development in Toronto, ON. This contract role focuses on the creation of internal APIs crucial for enterprise data integration, emphasizing REST and event-driven architectures. To qualify, candidates must be PR or citizens residing in Canada for at least five years. You will design and construct APIs that...