Top Tech Jobs & Startup Jobs in Toronto

Lead network security efforts including firewall and related security capability management, threat modeling, detection use-case development, network mapping, security testing and hardening, and stakeholder reporting. Provide SME guidance to product and architecture teams and review MSP changes to ensure secure network designs and configurations.

Investigate and triage security incidents, perform technical troubleshooting, threat containment and hunting, tune SIEM/IDS, support vulnerability management and incident response, maintain SOC procedures, and participate in on-call rotation.

Lead planning and execution of paid media and CRM programs, partner with Product Marketing and agencies, manage Salesforce Marketing Cloud operations, drive acquisition/retention campaigns, apply AI and MarTech to optimize performance and measurement.

The role involves leading infrastructure enhancement, optimizing disaster recovery, and ensuring service reliability for backup systems. Key responsibilities include developing infrastructure roadmaps, conducting tests, automating operations, and collaborating with teams for scalability and security.

As Payments Lead, you will drive technical direction and delivery of software solutions, oversee payments infrastructure, and ensure operational excellence.

Operate and maintain enterprise Kong API Gateway on OpenShift, build and run on‑prem OpenShift clusters, manage service mesh (Istio), ensure observability, incident response, change management, platform lifecycle (scaling, upgrades, certificates), and support databases and host foundations with automation-first tooling.

Operate and maintain Red Hat AMQ messaging and secure file transfer platforms on OpenShift, supporting lifecycle, scaling, upgrades, observability, and incident response. Build and run on‑prem OpenShift, manage service mesh, OS/database foundations, automation, and capacity planning while ensuring security, compliance, and change management.

Operate and maintain an on-prem OpenShift platform (clusters, operators, service mesh) including container/image lifecycle, CI/CD automation, ingress/TLS management, observability, DB support, incident response, and change management to meet SLOs and platform stability.

Lead and architect infrastructure solutions across physical and cloud environments (OpenShift, Azure/AWS/GCP). Ensure availability, security, monitoring, DR/BCP, vendor management, automation/IaC, and mentor platform teams while partnering with security and architecture.

Hands-on AppOps/SRE responsible for ensuring availability of large-scale Java applications across multi-datacenter environments. Troubleshoot full stack (RHEL/OpenShift, DB, API/messaging), instrument and tune Dynatrace/Splunk, build automation and self-healing, create dashboards/KB, and support 24x7 operations with a focus on reliability and performance.