Senior Platform Engineer
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Reach the decision-maker — $5About the role
Saatchi \& Saatchi Canada is currently opening a new Senior Platform Engineer position to support an innovative AI initiative. This role is part of a growing team with an immediate start date. We are seeking a candidate with a minimum of 6 years of experience in cloud infrastructure and DevOps practices, who is passionate about automation, reliability, and enabling development teams to deliver value efficiently. A strong understanding of security, scalability, and operational excellence is essential.* Own the platform across many concurrent environments (dev, sit, staging, sandbox, live\-preview, prod, and chaos) — provisioning, configuration, scaling, and recovery. * Manage Google Kubernetes Engine (GKE) at production scale: node pools, autoscaling, HPA tuning, PDBs, blue\-green and rolling cluster migrations, and Cloud NAT / private node hardening. * Own Terraform across cloud resources (GKE, Cloud SQL, Memorystore, GCS, IAM, networking, Cloud Armor, WIF) — including the judgement calls about blast radius when state and reality diverge. * Build and maintain CI/CD across multiple tiers (frontend, backend, agentic services) on GitHub Actions, including gated deployments, image promotion, and safe rollbacks. * Run live infrastructure changes during high\-pressure live events (Builder Nights, client demos, integration partner releases) — communicating intent, status, and risk to the broader team in real time. * Lead incident response on infrastructure issues: triage, mitigate, communicate, post\-mortem, and turn the learnings into runbooks and follow\-up tickets. * Establish and operate the observability stack — metrics, logs, traces, alerts — so the team finds problems before users do, without drowning in noise. * Implement and enforce security and compliance baselines: secrets management, IAM least\-privilege, network segmentation, audit logging, supply\-chain hygiene. * Partner with the Dev Lead and application engineers on the application\-side reliability concerns (graceful shutdown, retry semantics, capacity planning) so the platform and the apps share the same operational contract. * Write down what you know — runbooks, decision logs, environment maps, on\-call guides — so the next platform engineer can read in instead of starting over. * You enjoy chaos. Live events, unpredictable load, and infrastructure surprises are why you took this kind of job — not what makes you want to leave it. * Strong written and verbal communication. You narrate decisions in real time, write clear status updates while things are on fire, and explain trade\-offs to non\-infra people without condescension. * Calm, deliberate decision\-making under pressure — especially around irreversible or high\-blast\-radius changes. * Clear ownership instincts — you can say 'I've got this' and follow through, and you can say 'this isn't mine' and explain why. * Generous documentation habit — you leave the platform more legible than you found it. * Pragmatic — you reach for the boring, well\-understood solution before the novel one. * Comfortable disagreeing with engineers, leads, and stakeholders when you see a real risk; respectful when you do.
**Nice to Have**
* Prior experience inside Publicis Groupe or another large holding\-company agency environment.
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