API Engineer Jobs in Toronto, ON

Drive client engagement and technical excellence by leading strategic projects, collaborating with cross-functional teams, and transforming payment infrastructures for top enterprises through expert i...

Champion integration excellence by designing robust enterprise solutions. Lead the API-first architecture, ensuring effective integration across platforms while managing security and compliance in a d...

Build and operate innovative solutions to detect and prevent fraud at scale. Collaborate with cross-functional teams to enhance user experiences and leverage AI capabilities, ensuring businesses can c...

Drive the development of backend services and APIs for search and discovery features, collaborating with cross-functional teams to enhance user experiences and ensure system reliability and performanc...

Partner with us to deliver innovative payment solutions, guiding merchants through complex integrations and technical decisions that enhance performance and scalability in a dynamic environment...

Innovate robust backend solutions for a behavioral intelligence platform, turning customer signals into actionable marketing triggers. Collaborate cross-functionally to build scalable systems that enh...

Join a team that's building and scaling global messaging solutions, enhancing performance and architecture. Tackle engineering challenges while collaborating with talented peers to innovate and optimi...

Transform your career by driving full-stack development for a user-focused AI patent platform. Collaborate with cross-functional teams to build scalable solutions that enhance user experiences while m...

Join a team that's shaping the future of eBay's developer ecosystem by designing scalable APIs and systems. As a hands-on technical leader, you'll influence engineering direction and enhance integrati...

Join a team that's dedicated to transforming business needs into actionable requirements. Collaborate with stakeholders and technology teams to enhance enterprise data and application initiatives, ens...

Join a team that's building innovative backend services and infrastructure for next-gen crypto and web3 solutions. Collaborate to deliver scalable, high-quality systems that enhance trading experience...

Lead the charge in developing and optimizing agent runtime patterns and integrations. Collaborate across teams to create production-quality implementations that adhere to standards, ensuring agents de...

Empower AI observability by delivering end-to-end solutions, collaborating with cross-functional teams to enhance user experiences and insights into agent performance, costs, and errors, while navigat...

Design and develop scalable backend applications in a collaborative, remote environment. Engage with cross-functional teams to enhance software quality and mentor peers while ensuring high performance...

Unlock potential by leading the development of scalable AI solutions. Collaborate with product managers and data scientists to implement cutting-edge technologies, optimize performance, and deliver in...

Elevate your career by driving platform migrations and building event-driven processing pipelines. Collaborate cross-functionally to ensure data compliance and operational excellence while managing la...

Build innovative AI solutions by collaborating with clients to tackle complex challenges. Design and deploy production-quality software while ensuring reliability and usability in real-world environme...

Innovate software solutions that enhance pharmaceutical research processes. Collaborate with teams to design, develop, and maintain applications aiming for efficiency and impact in the healthcare indu...

Drive software innovation by developing and maintaining applications for pharmaceutical R&D. Collaborate with cross-functional teams to deliver effective solutions and continuously enhance development...

Drive innovation by designing and delivering advanced AI agents that leverage high-cardinality observability data. Collaborate with a dynamic team to enhance Canvas capabilities, ensuring agents perfo...

Empower innovation by designing and maintaining scalable backend systems that drive AI workflows and operational decision-making. Collaborate across teams to deliver reliable, high-performance service...

Join us to drive complex backend initiatives, shape scalable architectures, and mentor engineers. Collaborate across teams to deliver high-quality solutions while ensuring system reliability and perfo...

Drive the evolution of a robust Fulfillment platform, shaping architecture and strategy while mentoring teams. Lead modernization efforts to enhance scalability, reliability, and performance, ensuring...

Take ownership of API development, optimizing performance and reliability for a high-traffic platform. Collaborate on critical infrastructure, enhance user experience, and implement robust security me...

Take ownership of developing a live, metered Exchange system to transform data partnerships into billable services. Collaborate with engineers to enhance developer experience and tackle complex produc...