System Engineer / SRE (Cloudflare & Acquia CMS)

We are seeking a Senior Site Reliability Engineer (SRE) to oversee the reliability, performance, scalability, and security of the client's high-traffic, enterprise-scale Acquia (Drupal) web platform. This role is centered on managing and optimizing a sophisticated, multi-tier delivery architecture, with a primary and immediate focus on conducting comprehensive platform assessments of the current infrastructure, delivery pipelines, and caching configurations spanning Cloudflare, Varnish, and Memcached to identify bottlenecks, security gaps, and optimization opportunities. This is a fully remote position that offers you the flexibility to work from any location in Armenia, whether it's your home or well-equipped offices in Yerevan or Gyumri. Responsibilities Evaluate and document the existing infrastructure, including the integration between Cloudflare, Varnish, Memcached, and the Acquia hosting platformAnalyze cache hit ratios (CHR) at the Cloudflare and Varnish layers, identify uncacheable components, and recommend changes to maximize edge and proxy cachingCompare current configurations against Drupal, Acquia, and industry-standard SRE best practices, generating actionable roadmaps and recommendations for remediationMaintain, configure, and optimize the end-to-end caching pipeline (Cloudflare Edge → Varnish → Memcached → Drupal Backend) to minimize origin loadImplement and manage robust cache invalidation strategies, such as Drupal Cache Tags, acquia_purge, and Cloudflare API purges, to ensure content freshness without risking origin stampedesAuthor and tune Varnish Configuration Language (VCL) files to manage custom headers, redirect logic, and bypass rulesSet up and maintain monitoring, logging, and alerting dashboards across the entire stack, including Acquia logs, Varnish logs, Cloudflare Analytics, and APM tools like New RelicParticipate in incident response to diagnose and resolve production bottlenecks, service disruptions, or latency spikesRun thorough Post-Incident Reviews (PIR) to prevent recurrences Requirements 3+ years of experience auditing complex web architectures, generating technical assessment reports, and translating findings into prioritized technical backlogsExperience working within the Acquia Cloud ecosystemUnderstanding of Varnish caching, VCL scripting, and administrative tuningSkills in configuring and troubleshooting MemcachedKnowledge of Cloudflare configurationEnglish proficiency at B2 level or higher Nice to have Background in hosting and tuning enterprise-grade Drupal sitesFamiliarity with Drupal internals for debugging, including how Drupal bootstraps, how settings.php overrides caching behavior, and how to debug PHP-FPM slow logs, memory exhaustion, and DB locks during assessmentsProficiency in New Relic (native to Acquia) or Datadog to profile slow transactions, database query times, and external API call latencies during auditingExperience parsing and analyzing web logs, including Apache/Nginx logs on Acquia, Varnishncsa logs, and Cloudflare LogpushFamiliarity with Git, Acquia Cloud Pipelines, or alternative tools like GitLab CI/CD, GitHub Actions, and deployment orchestration We offer We connect like-minded peopleDelivering innovative solutions to industry leaders, making a global impactEnjoyable working environment, whether it is the vibrant office or the comfort of your homeOpportunity to work abroad for up to two months per yearRelocation opportunities within our offices in 55+ countriesCorporate and social eventsWe invest in your growthLeadership development, career advising, soft skills and well-being programsCertifications, including GCP, Azure and AWSUnlimited access to EPAM's internal learning databaseFree English classes with certified teachersWe cover it allParticipation in the Employee Stock Purchase PlanMonetary bonuses for engaging in the referral programComprehensive medical & family care packageFour trust days per year for personal needsDiscounts for fitness clubsBenefits package (hotels, restaurants, stores and services) EPAM Armenia is a team of talented innovators united by a passion for technology. In 2014, we opened our first office in Yerevan, and now we have a second engineering hub in Gyumri. We've built a continuously learning organization that helps its employees rapidly advance their careers. Here you will work with the world's industry leaders, support impactful projects using the latest technologies, collaborate with multi-national teams, and have access to a wide variety of development opportunities.