Top Tech Jobs & Startup Jobs in Toronto

Own and scale Mozilla's web bug bounty program; triage and validate reports; drive end-to-end remediation with engineering teams; perform targeted code reviews (JavaScript, Python); collaborate with SIRT on incidents and post-incident reviews; build tooling and metrics to improve triage, automation, and program insights.

The Front End Engineering Manager will lead a distributed team, driving improvements to the Firefox Desktop experience, managing multiple projects, and ensuring quality software delivery while fostering an inclusive team environment.

Design, build, and maintain scripts, APIs, integrations and agentic AI workflows for workplace systems (collaboration tools and identity platforms). Implement monitoring, automate onboarding/offboarding and access provisioning, troubleshoot reliability and security issues, document shared libraries, and partner across IT, Security, and People teams to improve user experience and scalability.

Design, develop, and maintain Thunderbird's iOS app with a focus on performance, reliability, security, accessibility, and scalability. Own projects end-to-end, debug and test across unit/integration/automation, review code, reduce technical debt, document architecture, and collaborate with product, UX, and the open-source community.

Lead customer and partner go-to-market for a new browser automation platform. Identify design partners, build pipeline, run discovery and technical sales cycles, drive LOIs/POCs/pilots to commercial contracts, and shape integrations and product roadmap through close engineering partnership.