Senior Site Reliability Engineer – Cloudflare & Acquia CMS

About the role

We are looking for a Senior Site Reliability Engineer to ensure the reliability, performance, scalability, and security of a high‑traffic, enterprise‑scale Acquia (Drupal) web platform. The role is fully remote within Armenia and focuses on assessing and optimizing the current multi‑tier delivery architecture.

Key responsibilities

• Evaluate and document the existing infrastructure, including integration between Cloudflare, Varnish, Memcached, and Acquia hosting.
• Analyze cache hit ratios at Cloudflare and Varnish layers, identify uncacheable components, and propose improvements.
• Maintain and optimize the end‑to‑end caching pipeline (Cloudflare Edge → Varnish → Memcached → Drupal backend).
• Implement robust cache invalidation strategies using Drupal Cache Tags, acquia_purge, and Cloudflare API.
• Author and tune VCL files for custom headers, redirects, and bypass rules.
• Set up monitoring, logging, and alerting dashboards across the stack, including Acquia logs, Varnish logs, Cloudflare Analytics, and APM tools.
• Participate in incident response, diagnose production bottlenecks, and conduct post‑incident reviews.

Required profile

• 3+ years of experience auditing complex web architectures and producing technical assessment reports.
• Proven experience working within the Acquia Cloud ecosystem.
• Strong understanding of Varnish caching, VCL scripting, and Memcached configuration.
• Ability to analyze web logs (Apache/Nginx) and use APM tools for performance profiling.

Required skills

• Cloudflare configuration
• Acquia Cloud platform
• Varnish and VCL scripting
• Memcached administration
• Drupal (CMS) internals
• New Relic or Datadog APM
• Monitoring, logging, and alerting setup
• Incident response and post‑incident review