Aleksandr Donskoy, Developer in Saint Petersburg, Russia

Aleksandr Donskoy

Network Programming Developer

Saint Petersburg, Russia
Toptal Member Since
August 21, 2015

Aleksandr is an accomplished systems administrator with 9+ years of experience managing server infrastructures and data centers. He is professional, with strengths in effectively planning, setting up, and tuning IT infrastructures to consistently achieve high availability and performance. He has the ability to adapt his communication style to diverse audiences including both business and technical.

Aleksandr is available for hire
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Virtualization, Load Balancers, Web Services, Linux
Irkutsk Regional ISP
High-availability Systems, Infrastructure, High-load, FreeBSD, Networking, Linux
Irkutsk National Sanitary Office
Networks, Corporate, Windows, Linux


Saint Petersburg, Russia



Preferred Environment


The most amazing...

...thing I've designed and implemented is an ISP infrastructure for a regional network for 40,000 subscribers. It has more than 3,000 switches and 100 servers.

Work Experience

2014 - PRESENT

System Administrator

  • Designed and implemented infrastructure for HA Web service.
  • Designed and implemented infrastructure for a web development company.
  • Implemented a backup strategy with Bacula software.
  • Fixed many performance and security problems.
Technologies: Virtualization, Load Balancers, Web Services, Linux
2008 - PRESENT

Lead System Administrator

Irkutsk Regional ISP
  • Designed and implemented a regional network and three private data centers. We built the network with more than 3000 switches and routers and 90+ Linux servers of different types.
  • Reduced reclamations 50% by introducing technical corporate standards.
  • Implemented a fault-tolerant PPPoE cluster with MPD on FreeBSD and a pool of distributed FreeRadius servers.
  • Implemented a network monitoring system with Zabbix that has about 30000 data elements and performs at 120 elements/sec.
  • Customized billing software using Perl and Python.
  • Designed and implemented a complete set of ISP services.
  • Built an efficient team of system administrators.
Technologies: High-availability Systems, Infrastructure, High-load, FreeBSD, Networking, Linux
2006 - 2008

System Sdministrator

Irkutsk National Sanitary Office
  • Designed, deployed, and integrated a corporate network for 100+ users.
  • Implemented a backup strategy.
  • Upgraded corporate servers with open source software.
Technologies: Networks, Corporate, Windows, Linux



Apache, KVM/Qemu, NGINX, Git, Nagios, Zabbix, Asterisk, Vagrant


Linux, FreeBSD, Windows, Debian Linux




Network Programming, Routing, Mason, HAProxy, BGP, Web Services, Load Balancers, Virtualization, Corporate, Networks, Networking, High-load, Infrastructure, High-availability Systems, Iptables, FreeRADIUS, Bacula


Python, Perl




Agile Software Development


2003 - 2008

Master's Degree in Physics, Telecommunication Networks and Systems

Irkutsk State University - Irkutsk, Russia