Lead Reliability Engineer - Network and Security

Lead Reliability Engineer - Network and Security

What you'll be doing

You will build and operate the security controls that protect Zenoti's cloud estate, while partnering closely with InfoSec, Platform, and Engineering to enforce these controls.

• Own network architecture and connectivity. Design, build, and run the network backbone of a distributed, multi-tenant SaaS estate: vWAN/hub-spoke, ExpressRoute/VPN, cross-cloud (AWS↔Azure) connectivity, private endpoints, DNS, routing, and segmentation, engineered for redundancy and tested failover.
• Secure the edge and perimeter. Run the WAF, DDoS protection, Front Door/CDN, firewalls, and egress control, with no single points of failure, and keep network visibility high through flow analytics and cross-cloud path monitoring.
• Automate everything that repeats. Treat network and security as code: secure-by-default Terraform modules, IaC scanning gates, drift detection, policy-as-code (OPA, Azure Policy, SCPs), automated evidence collection, and certificate and secrets lifecycle automation.
• Operate detection, response, and resilience. Lead detection engineering, SIEM tuning, and incident command with RCA-to-control feedback loops, plus DR and ransomware-recovery architecture with failover runbooks tested on a schedule.
• Keep us continuously compliant. Maintain a control registry mapped to SOC 2, PCI-DSS, HIPAA, and regional privacy laws, and govern identity, PKI, and encryption in line with InfoSec policy.
• Be the architecture authority and set direction. Run design reviews and readiness assessments for new platforms and tools, manage risk-acceptance workflows, own the roadmap, mentor engineers, and give leadership clear, metric-anchored risk reporting.

What you'll bring

• 8+ years designing and operating infrastructure in Azure (primary) and AWS, with deep expertise in both network and security.
• Deep cloud networking: vWAN/hub-spoke, ExpressRoute/VPN (IPSec), BGP and routing, DNS, load balancing, private connectivity, and firewall and WAF management, including diagnosing complex cross-cloud connectivity issues.
• Security fundamentals: TLS/PKI, IAM, SIEM, threat analysis, and EDR and vulnerability/patch management across Windows and Linux.
• Strong automation skills: production IaC (Terraform preferred; ARM/Bicep/Ansible a plus), CI/CD pipeline integration, and scripting in Python, PowerShell, or Bash to eliminate manual toil.
• Multi-tenant SaaS architecture: tenant isolation, blast-radius thinking, and data residency across regions, including GDPR and regional laws.
• Workload and data security: Kubernetes (AKS/EKS) hardening, encryption and key management, and SQL Server and PaaS datastore hardening.
• Brownfield pragmatism: migrating legacy estates to secure baselines without outages, through phased adoption.
• Solid command of SOC 2, PCI-DSS, and HIPAA audits, including customer security questionnaires.
• Clear written communication: ADRs, and translating risk into business terms for leadership and auditors.
• Ability to influence through technical depth in a fast-paced, scaling SaaS environment.

Nice to have: AZ-500/SC-100, AWS Security Specialty, CISSP/CCSP, CKS.