Top Tech Jobs & Startup Jobs in Toronto

Administer and optimize enterprise collaboration platforms (Microsoft 365, Slack, Google Workspace); manage email security (Exchange Online, Cisco Cloud Email Security, DKIM/DMARC/SPF); integrate and support adjacent SaaS tools; lead incident response, change management, documentation, and mentor support teams to drive secure, reliable collaboration globally.

Build and maintain scalable backend services, APIs, and web applications for eBay Seller Hub. Lead projects from technical design through implementation, testing, rollout, and iteration. Collaborate with product managers, designers, and engineers to deliver customer-facing seller experiences, contribute to system architecture, write well-tested code, and improve engineering standards across orders, listings, acquisition, and other seller workflows.

Build and maintain a scalable authentication platform across the full stack, with emphasis on frontend development. Design React or Angular experiences, backend services, REST APIs, relational database solutions, cloud-native deployments, and CI/CD practices. Own features from architecture through production support, contribute to technical decisions, evaluate technologies, use AI-assisted development tools, and mentor engineers in a new greenfield product environment.

Design and operate scalable AWS cloud infrastructure and Kubernetes platforms. Improve developer productivity through automation, CI/CD, and infrastructure as code. Partner with software engineering teams to build reliable cloud-native platforms, applying SRE principles, Linux, networking, observability, and operational best practices. Experience with Amazon Bedrock, SageMaker, Go, Python, Terraform, Prometheus, Grafana, and CloudWatch is desirable.

Lead cross-functional corporate strategy projects, develop data-driven recommendations, analyze competitive dynamics, present strategic options to senior executives, and mentor strategy team members. Responsibilities include project leadership, insight generation, business and financial modeling, strategy development, executive communication, consensus building, and implementation planning across eBay’s marketplace, category, buyer, seller, and functional strategies.

Design and implement state-of-the-art models for ranking, recommendations, personalization, and pricing. Develop core ML platform and feature engineering systems (Zipline). Productionize research models by building ETL/ELT workflows, inference pipelines, and deployment automation. Implement MLOps, model serving, monitoring, observability, and optimize model performance SLOs and system costs.

eBay is hiring ML Scientists to design state-of-the-art ranking, recommendation, personalization, and pricing models, and ML Engineers to productionize models by building ETL/ELT workflows, inference pipelines, MLOps infrastructure, deployment automation, monitoring, and cost/ performance optimization. Both roles contribute to feature engineering, model serving, observability, and maintaining production ML platform components like Zipline.

The Senior Systems Engineer will design and develop data applications, lead software development teams, oversee data integration projects, manage BI systems, and ensure optimized performance while collaborating across teams.

The Staff Full Stack Engineer will design, develop, and maintain scalable applications and APIs, lead architectural decisions, enhance advertising features using AI, and engage in technical discussions within an Agile team environment.

Own the strategy, vision, roadmap, backlog, and delivery of eBay Advertising’s ad reporting and measurement products. Partner with Engineering, Design, Analytics, Legal, Marketing, Finance, and Operations to provide sellers with actionable performance insights. Define goals, prioritize investments, manage dependencies, communicate with executives, and optimize products using customer insights, data, and business objectives.