Experience

2012...: InnoGames

At InnoGames I am assigned to Network and Datacenter Operations team, duties include:

• Designing, building and monitoring a fault tolerant network across multiple datacenters.
• Developing traffic loadbalancer tools in C++.
• FreeBSD kernel development - fixing bugs and improving packet filter (pf).
• Developing DDoS protection tools.
• Serving colleagues with experience in solving network-related issues.

2007 - 2012: Hurra Communications

At Hurra Communications I was a member of the Administrators Team, later promoted 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

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

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.

Knowledge and abilities

Human languages: English (fluent), German (learning), Russian (only basics), Polish (mother tongue)

Computer languages: C, C++, Perl, Python, Java, bash / sh

Networking hardware: Cisco, Extreme Networks, F5, HP ProCurve, NetIron

Operating systems: CentOS / RHEL, Debian, FreeBSD