Jan Garaj

in DevOps

Download my full CV in PDF

Summary

7+ years of Docker experience in production
15+ years in DevOps / AWS / IAM / Cloud / Docker / Kubernetes
5000+ Github stars for my public open source projects
14 000 000+ download of published Grafana dashboards and plugins
99 000 000+ pulls of my public Docker images
Knowledge of IT operation, automation, high availability, UNIX

Jobs

DevOps microservice engineer

July 2015 - current

Monitoring Artist - www.monitoringartist.com

Development / operations of monitoring and microservice systems for 3rd party companies
Docker images development and size and speed optimization
Supported technologies: Docker, Kubernetes, Terraform, AWS, GCP, Elasticsearch, Grafana, Mongo, Go lang, microservices, Python, Keycloak, ...

DevOps engineer in monitoring team

February 2014 - June 2015

BBC - www.bbc.co.uk

Development / operations / improvement of monitoring systems for all digital BBC products (web, broadcast TV/radio, streaming) and infrastructure (AWS cloud, CDN, dedicated servers, ….)
Supported technologies: Zenoss, Zabbix, Python, Linux, bash, AWS, Puppet, Ansible, CDN, ...

Digital app support engineer

April 2013 - August 2013

GlaxoSmithKline - www.gsk.com

Supporting of internal digital projects
Coordination of projects between brand department/agencies/webhosting team
Supported technologies: JSP (Websphere), .Net, MS SQL, Oracle

UNIX 2^nd line support specialist

November 2012 – January 2013

Soitron - www.soitron.com

Fixed term contract - outsourcing for Hewlett-Packard Bratislava
Dedicated onsite UNIX support for Volkswagen Slovakia
Incident and change management for HP-UX, AIX, Red-Hat, Linux, alternatively EMC
Used/supported technologies: HP OpenView Performance Agent (OVPA), HP OpenView Operations (OVO), HP Asset Manager, HP Universal CMDB, Oracle, DB2, Ingress, MySQL

Support Server/Client Automation

November 2011 – May 2012

Soitron - www.soitron.com

Fixed term contract - outsourcing for Hewlett-Packard Bratislava
Outsourcing (contractor) for Hewlett-Packard Bratislava
Worldwide L1/L2 support for:
- HP Server Automation (F/K/A Opsware)
- HP Client Automation (F/K/A RADIA)
Development utility for support team based on HPSA Java API

Operation Coordinator

January 2011 – September 2011

Zoznam - www.zoznam.sk

Defining change requests/tickets for configurations of servers/operations systems (Linux, Windows, Solaris, FreeBSD)
Controlling IT costs OPEX/CAPEX
Responsibility for production infrastructure, preservation defined SLA with cooperation of server administrators
Contributing on the concept of web application development in high availability environment, defining the processes of software development and maintenance

Developer IT

September 2009 – December 2010

WIMC - www.wimc.sk

Development and maintenance of information system for monitoring objects (vehicles, persons) based on GPS/GSM/GPRS technologies, frontend technology is PHP
Virtualization project based on Citrix XenServer – deployment and administration of hypervisor and virtual servers based on Debian, CentOS, FreeBSD
Implementation of monitoring system based on Zabbix
Optimization of performance and query time in big MySQL database

Programmer of web applications

May 2006 – June 2009

Positive - www.positive.sk

Development of web pages in CMS for presentation webs, web-shops
Designing of MySQL databases
Analysis of customers requests for web pages and MLM functions
Implementation of functions for multi level marketing systems, mainly computation provisions of insurance products for MLM networks

Projects

Zabbix Docker monitoring
Zabbix C module and template for Docker container monitoring. C module provides high performance with low footprint. It can be used also for LXC container monitoring.
Technologies: Zabbix, C, Docker
Grafana 2 for Zenoss 5
Commercial integration shipped as Docker image. Easy user deployment via Zenoss Control Center and seamless integration with Zenoss 5.
Technologies: Grafana 2, Docker, Go, Node.js
Zenoss with Zabbix Agent
Zenpack, which provides Zabbix agent functionality for agentless Zenoss monitoring. It's based on open Zabbix architecture and source code.
Technologies: Zenoss, Zabbix, Python, C, XML
Zenpack TCP Statistics
Zenoss SSH-based ZenPack provides TCP state statistics for IPv4 and IPv6. It's based on custom parser of file /proc/net/tcp(6).
Technologies: Zenoss, Python, Linux
Mastering Zabbix
I accepted role of technical reviewer for Zabbix book. I feel almost such a Zabbix expert, but some ideas in the book was new and usefull for me.
PHP error handling (demo)
Project for error/monitoring management of PHP applications with integration PHPIDS as application firewal. Technologies: PHP, Nette, PHP IDS, MySQL
Photo contest FIITAPIXEL
Photo competition for students and others. Technologies: CSS, Prototype/Scriptaculous JS, Highslide JS, CakePHP, (media) RSS, PostgreSQL, Microformats, LDAP
Zabbix Template for Zenoss
Zabbix template for monitoring of Zenoss. 200+metrics, 60+ triggers, 15+ graphs. Log monitoring and custom user parameters for rrd, cpu/mem utilizations are included.

Education

MEng: Software engineering

September 2007 – June 2009

Faculty of Informatics and Information Technologies - www.fiit.stuba.sk

Accredited Course of British Engineering Council UK, accredited by The Institution of Engineering and Technology
Analyzing, projecting, maintenance of software systems. Management of development team. Awareness ethical, social, juridical and economical relations and impacts on the software.

BEng: Information technology

September 2004 – September 2007