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Principal Support Engineer (L3, Edge Network)

Gcore  ·  Poland, Poland, Lithuania, Cyprus
Remote Full-time Lead Customer Support

Job Description

What You’ll Do

  • Act as the 3rd-level escalation point for complex technical issues related to CDN and Edge Network products.
  • Diagnose and resolve advanced issues involving caching, DNS, routing, load balancing, SSL/TLS, and web security.
  • Take ownership of high-severity incidents (P1/P2) and drive resolution in collaboration with Engineering, Network, and Operations teams.
  • Asist with root cause analysis (RCA) and contribute to preventive measures to reduce incident recurrence.
  • Analyze traffic patterns, cache efficiency, and node performance to optimize content delivery.
  • Support production changes, maintenance windows, and software upgrades.
  • Provide technical guidance and mentorship to L1 and L2 Support Engineers.
  • Maintain and improve internal documentation, runbooks, and troubleshooting guides.
  • Participate in post-incident reviews and continuous improvement initiatives.
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