Top Tech Jobs & Startup Jobs in Toronto

Lead hands-on engineering execution and people management for Thunderbolt, defining production readiness, release discipline, and engineering practices for an enterprise-ready open-source AI product across desktop, web, and mobile.

Design, build, and operate AI platform services for model training and inference at scale. Own reliability, Kubernetes/GKE deployments, GitOps pipelines, Terraform provisioning, observability, packaging and deployment automation, and incident response while collaborating with product, infrastructure, security, and data teams.

Execute digital marketing activities to grow Thunderbird's brand and users: create and publish social, blog, and email content; manage campaign calendars; track and report metrics; support email automation, surveys, and cross-functional campaign execution; and ensure consistent brand messaging.

The Staff Data Scientist will own the analytical strategy for Firefox, driving data-informed decisions through measurement frameworks, experiments, and user growth analysis, while mentoring other data scientists.

The Staff Data Scientist will lead analytical strategies for Firefox, focusing on product growth, measurement frameworks, and mentoring data scientists while guiding data-driven decisions.

Work on Firefox's accessibility engine (Gecko) to improve architecture, stability, performance, and platform integration. Debug multi-process, multi-threaded and OS-specific issues, build tests and prototypes, collaborate with cross-functional teams, influence web accessibility standards, and engage with the open-source community to make web content accessible to all users.

Produce and publish short-form social media content (Instagram Reels, Stories, TikTok) to build awareness and community. Collaborate with the Social Media Manager, appear on camera, edit high-performing content, and deliver ~15–20 hours/week as an independent contractor. Remote (USA/Canada).

As a Senior Data Engineer, you'll build and manage data pipelines, ensure data quality, collaborate with teams, and uphold data governance at Mozilla.

Lead product strategy and execution to build a new PC gaming product and business from the ground up. Own market research, product vision, go-to-market, metrics, and roadmaps; manage cross-functional design and engineering teams; drive product-market fit and growth; represent the product externally and align stakeholders across Mozilla leadership and partners.

Lead data-driven strategy by partnering with senior executives to deliver rigorous analytical solutions. Design and implement sophisticated analyses on large-scale data, build trusted cross-functional relationships, mentor data scientists, and influence long-term product and business decisions.