Sergey Morozik

About Sergey Morozik

Infrastructure / systems engineer with 30+ years of experience building and running large-scale Linux platforms. I specialize in high-traffic, high-availability systems and petabyte-scale storage.Today I work as a Staff Engineer at DigitalOcean, supporting one of the world’s top traffic services. My focus is on architecture, reliability, and total cost of ownership (TCO) – making sure that every rack, disk, and packet has a clear purpose.What I work on- PB-scale storage design, procurement, and lifecycle management across multiple data centers- High-load infrastructure: Linux tuning, schedulers, load balancers, database and cache clusters- Cost and TCO optimization: sizing, vendor negotiations, “cloud vs on-prem” trade-offsSelected highlights- Led storage expansions to 20+ PB while cutting vendor proposals by six figures through negotiation and proper sizing- Supported a top-10 global web property by traffic, keeping it stable under constant growth and attacks- Delivered long-term infrastructure support and advisory for clients via my own company, MSMSoft Technologies Consulting Inc.Occasionally open to short-term advisory / audit work around- Infrastructure and storage architecture- Cloud repatriation and cost optimization- Vendor and hardware strategy (storage, servers, data center footprint)

Experience

1. Staff Linux Systems Engineer

   DigitalOcean

   Aug 2023 — Present · US

   As a Staff Infrastructure Engineer, I lead the design, optimization, and operation of high-load Linux infrastructures supporting one of the world’s top traffic services. Focus on reliability, scalability, and total cost of ownership (TCO) for billions of daily requests- Architect and review infrastructure and storage designs, including PB-scale storage clusters (20PB+)- Lead multi-PB storage expansion projects across data centers, from sizing and vendor selection to rollout- Tune Linux kernels, schedulers, and network stack to improve performance for I/O- and network-heavy workloads- Drive performance troubleshooting and incident reviews for mission-critical systems- Coordinate with networking, SRE, and database teams on HA, disaster recovery, and capacity planning- Mentor engineers on systems design, performance, and large-scale operations.

Education

• Moscow State Institute of Radio Engineering, Electronics and Automation (Technical University)

  Bachelor, Computer Systems Networking and Telecommunications

  1997 — 2002

Skills

• High Availability
• Security
• Subversion
• Mysql
• Bash
• Virtualization
• Chef
• Red Hat Linux
• Unix Shell Scripting
• Centos
• Apache
• Git
• Performance Tuning
• Unix Operating Systems
• Freebsd
• Puppet
• Postfix
• Network Administration
• Infrastructure
• Linux Server
• Sql
• Linux
• Perl
• Domain Name System (Dns)
• Security Audits
• Nginx
• Linux System Administration