Led the architecture and operation of a private cloud serving thousands of customers.

• Designed and deployed a full-stack Private Cloud (CloudStack, Ceph, KVM) from bare metal to production.
• Engineered a 2PB+ Ceph storage solution, ensuring data integrity and high IOPS for critical workloads.
• Orchestrated the migration of 3,000+ VPS from legacy legacy platforms to modern infrastructure with zero data loss.
• Standardized infrastructure via Ansible and Docker, enforcing security compliance and reducing provisioning time.
• Revolutionized disaster recovery, achieving 99.9% backup success rates through automated verification.

Managed high-volume email infrastructure and Linux platform security.

• Built a high-throughput Email Security Gateway processing millions of messages with Postfix and custom filters.
• Hardened Linux environments and optimized kernels for low-latency performance requirements.
• Developed a custom Debian package repository to ensure consistent software delivery across the fleet.
• Drastically reduced inbound spam and improved IP reputation through multi-layer filtering strategies.

Architected high-performance backends for travel technology.

• Engineered a real-time hotel metasearch engine aggregating pricing from multiple external APIs.
• Implemented async multi-threaded processing to maximize data throughput and reduce latency.
• Optimized complex MySQL schemas to handle heavy concurrent search traffic.

Provided advanced technical troubleshooting for ISP connectivity issues.

• Resolved complex network layer issues using structured troubleshooting methodologies.
• Consistently maintained top-tier resolution metrics in a high-pressure environment.