Lead Site Reliability Engineer - Canada, Remote (CA)

Our Team The Incident Response Team sits at the intersection of every customer-impacting failure across Vista. We coordinate response to critical incidents, drive learning out of every event, and partner with engineering teams across the organisation to make Vista more reliable. Today the team is strong on incident handling, and we are deliberately raising the engineering bar to match. What You Will Do Identify patterns of failure across the organisation. Analyse incidents and post-incident reviews to find the recurring technical root causes behind customer impact, rather than treating each incident as a one-off. Prioritise the biggest improvement levers. Focus reliability effort where it most reduces Mean Time to Detect and Mean Time to Resolve, and where it proactively prevents the next incident from happening at all. Turn those patterns into the right engineering intervention and influence the teams who can build it. This includes safe deployment defaults, secret and credential rotation, resilience patterns such as circuit breakers and fallbacks, observability and alerting standards, contract testing, and infrastructure pre-flight validation. You drive the what and the why; the owning teams build it. Help teams hands-on, in their code , through Merge Requests, pairing, code review, and active technical support, favouring the simplest intervention that prevents recurrence over the most elaborate one. Disseminate and evangelise improvements across the organisation . Identify best practices, document them, and transfer the learning to other teams so that local fixes become shared practice and improvements compound rather than stay siloed. Lead the technical conversation in post-incident reviews and operational forums. Ask the questions that surface missing monitoring, untested failure modes, incomplete rollback strategies, and unaddressed dependency risks, and steer toward the simplest solution that holds. Help the Incident Response Team grow its engineering practic