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2012 … current.: InnoGames
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At InnoGames I am assigned to Network and Datacenter Operations team, duties include:

  • Designing, building and monitoring a fault tolerant network across multiple datacenters using Cumulus Linux, FreeBSD, BIRD, strongSwan and Wireguard.
  • Developing traffic loadbalancer tools using FreeBSD.
  • FreeBSD kernel development - fixing bugs and improving packet filter (pf).
  • Developing DDoS protection tools.
  • Serving colleagues with experience in solving network-related issues.
  • Developing out in-house virtualization/cloud solution.

2007 - 2012: Hurra Communications
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At Hurra Communications I was a member of the Administrators Team, laterpromoted to position of Team Leader. Duties carried by me were:

  • Managing the BigIP F5 application delivery controllers.
  • Cooperation with developer teams, helping with applications architecture and deployment.
  • Preparing testing environments for developers to ensure consistency with production.
  • Monitoring systems’ and applications’ health and performance with Nagios and Cacti.
  • Managing office LAN (security, wifi, traffic management).
  • Asterisk based VoIP telephony.
  • VPN network between offices with IPsec and OSPF.
  • Various services on FreeBSD and CentOS/RHEL Linux (Apache, Tomcat, nginx, MySQL etc).

2004 - 2007: Citypartner
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At Citypartner I was responsible for managing of the backbone network and hosting services. During my work there I have created IMQ-devnames.

  • Dynamic routing protocols (BGP, OSPF).
  • Manageable switches with VLANs.
  • Long-distance WiFi links with Mikrotik RouterOS.
  • Advanced traffic management and QoS on Linux for hundreds of users.
  • Linux-based routers and firewalls.
  • Hosting services (Apache, MySQL, Postfix, Spamassassin) on FreeBSD.

1999 - 2005: ASK LANdrynka / Bieżanów.net
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I was one of creators of a neigbourhood computer network. The goal was to provide Ethernet-based broadband Internet access in the dark ages of dial-up for a few friends. The network become larger than initially expected and after merging with a similar effort created by other people on the other side of our district, it grew up to 250 connected computers.