Personal Data

Name	Ronny Roethof
Address	Geldersehoek 41
	8223 ZC Lelystad
Phone	+31 (0) 320785341
Mobile phone	+31 (0) 629383572
E-mail	cv (at) roethof (dot) net
Date of birth	4 february 1978
Place of birth	Kootwijk
Nationality	Dutch
Drivers license	Dutch license B (Car)
Marital status	Single

Summary

I am a driven professional with extensive all-round knowledge of system administration, security and networking. My passion lies within the ICT, especially in the field of open source. I have worked as a Linux system administrator, technical specialist and migration specialist at several Internet companies such as Scarlet, Nuon ICT, LeaseWeb / EvoSwitch, ACN Europe and News Service. I have more than 10 years experience in various complex Linux environments and still see many challenges and learning opportunities.

Education

2000 – 2009	Various industry-related courses, including: LPIC 1 : Linux Professional Institute Certification (no exams) LPIC 2 : Linux Professional Institute Certification (no exams)
1993 – 1995	Dutch MAVO D, Scholen Gemeenschap Lelystad (degree)
1990 – 1993	Dutch Middenschool, Scholen Gemeenschap Lelystad (degree)

Work experience

Linux Systemadministrator (april 2011 – december 2011)
Company, location:	News-Service Europe BV, Amsterdam
Activities:	Within News Service I was engaged with all running Debian Linux systems and the related UseNet platform. News-Service has, as a healthy functioning company, ceased its activities by external factors, resulting in the termination of my work. My tasks included: Design, implementation and maintenance KVM clusters Design, implementation and maintenance Puppet configuration systems Maintenance and troubleshooting Linux / Unix Servers Maintenance of custom Debian packages and associated mirror Maintenance UseNet clusters Maintenance Storage Platforms Maintenance Mail hosting cluster Maintenance Web hosting cluster Implementatie en onderhoud Nagios monitoring oplossing Implementation and maintenanceNagios monitoring solution
Operating Systems:	Debian 5/6
Hardware:	Dell PowerEdge series, Dell PowerVault series, SuperMicro Storage series
Software:	MySQL 5.x, KVM, Apache 2.x.x, Postfix, Spamassassin, Nagios, Diablo NNTP

Senior Linux Systemadministrator (augustus 2010 – april 2011)
Company, location:	ACN Europe BV, Amsterdam
Activities:	Within ACN Europe I was engaged with all running Linux systems and developed several tooling based on Open Source Software. I was also the backup manager for the Windows platform and network backup management. My tasks included: Design, implementation and maintenance KVM clusters Design, implementation and maintenance Puppet configuration systems Design, implementation and maintenance Squid webfilters Design, implementation, conversion and migration from Exchange to Zimbra Maintenance and troubleshoot Linux/Unix servers Maintenance Webhosting clusters Implementation and maintenance abbix monitoring solution Backup netwerk engineer (Juniper SRX240/EX4200 / Cisco 9513/3650) Backup Windows engineer (Windows 2003/2008, IIS 7, Exchange 2007) Backup Storage engineer (EMC CX3/4, EMC AX5)
Operating Systems:	CentOS 5.5, Windows 2003/ 2008, Cisco IOS, JunOS 10.1R2.8
Hardware:	HP Proliant series, HP BladeCenters, Cisco switches, Cisco routers, Juniper switches, Juniper firewalls, EMC SAN storage
Software:	MySQL 5.x, VMWare ESX 3/4, Apache 2.x.x, Postfix, Spamassassin, Zabbix, Zimbra, Samba, IIS 7, MS Exchange 2003/2010, Active Directory

Senior Linux Systemadministrator (december 2008 – juni 2010)
Company, location:	LeaseWeb B.V., Haarlem
Activities:	LeaseWeb BV is a leading provider of hosting infrastructure solutions and owner of a private hosting network that offers a bandwidth of over 500Gbps. I was responsible off all systems that were using Linux and/or Unix. I was also involved in several projects, writing the technical input provided. Furthermore I was responsible for the design and implementation of these projects. The department where I worked consisted of six people and provided support to approximately 130 workstations and the management and development of over 250 physical and virtual servers and appliances. My tasks included: Installation, Maintenance and troubleshoot Linux/Unix servers Design, implementation and maintenance internal network (Cisco ASA/2950/3650) Design, implementation and maintenance van VPN connections (Juniper SRX650) Design, implementation and maintenance VMware ESX 4 enviroment Design, implementation and maintenance internal en external DNS servers Design, implementation and maintenance Voice Over IP telephony, faxes Design, implementation and maintenance Mail hosting clusters Design, implementation and maintenance Web hosting clusters Design, implementation and maintenance Back-up servers Design, implementation and maintenance Opsview/ Nagios monitoring cluster Support the Programming department with changes and implemenations of new software
Operating Systems:	Debian 4/5, Ubuntu 8/9/10, CentOS 5, FreeBSD 7/8, Windows 2003/ 2008
Hardware:	Dell PowerEdge series, HP Proliant series, Supermicro storage servers, Cisco switches, Cisco firewalls, HP switches, Juniper firewalls
Software:	MySQL 5.x, VMWare ESX 3/4, Apache 2.x.x, Postfix, Spamassassin, Samba, IIS 5/6, MS Exchange 2003/2007, Active Directory, Asterisk 1.2/1.4

Linux Systemadministrator (januari 2008 – december 2008)
Company, location:	Nuon ICT, Schiphol-rijk, Haarlem
Activities:	As system administrator I was responsible for all hosting servers that use the Linux operating system. I also introduced changes and implementations of the NUON hosted IT systems. My tasks included: Design, implementation and maintenance Mail hosting clusters Design, implementation and maintenance Web hosting clusters Design, implementation and maintenance Back-up servers Design, implementation and maintenance Nagios monitoring cluster Support the WebDevelopment department with changes and implemenations of new software
Operating Systems:	RedHat Enterprise 4/5, Debian 4
Hardware:	VMare virtuele servers
Software:	MySQL 5.x, Apache 2.x.x, Postfix, Spamassassin

Systemadministrator Linux / Migratiespecialist (november 2007 – januari 2008)
Company, location:	PINS Internet, Amsterdam
Activities:	As a migration specialist I was responsible for the migration of FreeBSD to RedHat Enterprise. Furthermore I was responsible for the daily management of RedHat-based hosting servers. My tasks included: Migrate, document and support the FreeBSD servers to RedHat Enterprise servers Design, implementation and maintenance Mail hosting clusters Design, implementation and maintenance Web hosting cluster
Operating Systems:	FreeBSD 5/6, RedHat Enterprise 4/5, Debian 4
Hardware:	IBM X Series
Software:	MySQL 4.x/5.x, Apache 2.x.x, Postfix, Spamassassin

Webdeveloper (juni 2007 – november 2007)
Company, location:	BudgetPC V.O.F., Lelystad
Activities:	BudgetPC maakte gebruik van een webshop systeem welke gebaseerd was op het verouderde PHP4. Er moest verhuisd worden naar een PHP5 hoster en het verzoek aan mij was om dit te herprogrammeren. My tasks included: Analyse existing system Analyse the wishes and posibilitys Design functional design Program the system Support the implementation within the organisation
Operating Systems:	Debian 4
Hardware:	HP Proliant series
Software:	MySQL 5.x, Apache 2.x, PHP4, PHP5

Systemadministrator Linux / Migratiespecialist (januari 2006 – maart 2006)
Company, location:	DenIT B.V., Amsterdam
Activities:	As a migration specialist I was responsible for the migration of FreeBSD to Fedora. Furthermore I was responsible for the daily management of Fedora-based hosting servers. My tasks included: Migreren, documenteren en nazorg leveren van FreeBSD servers naar Fedora servers Onderhoud Mailhosting clusters Onderhoud Webhosting clusters
Operating Systems:	FreeBSD 5/6, RedHat Enterprise 4/5, Debian 4
Software:	MySQL 4.x/5.x, Apache 2.x.x, Postfix, Spamassassin

Systemadministrator Linux / Migratiespecialist (december 2005 – januari 2006)
Company, location:	WideXS B.V., Hoofddorp
Activities:	Als migratiespecialist was ik verantwoordelijk voor de migraties van FreeBSD servers naar CentOS. Daarnaast was ik verantwoordelijk voor het dagelijks beheer van op CentOS gebaseerde hostingservers. My tasks included: Migrate, document and support the FreeBSD servers to CentOS servers Design, implementation and maintenance Mail hosting clusters Design, implementation and maintenance Web hosting clusters
Operating Systems:	FreeBSD 5, CentOS 4
Software:	MySQL 4.x/5.x, Apache 2.x.x, Postfix, Spamassassin

Junior Systemadministrator / Support Engineer (maart 1999 – november 2005)
Company, location:	XS4All, Diemen / Euronet, Amsterdam / Scarlet Telecom, Lelystad
Activities:	For these employers, I was employed for the guidance of the support department. Over time I moved on to junior administrator and I did the daily management of various platforms. My tasks included: Providing proper functioning Internet and internal networks Installations and troubleshooting for servers, clients Support for corporate clients in server housing Providing training to support staff Assist support staff Treatment of complaints about Internet abuse
Operating Systems:	Windows 9x, Windows 2000, FreeBSD 4, Debian 3

Beroepsmilitair (1995 – 1999)
Company, location:	Royal Dutch Army
During this period I was active as a professional soldier and I was sent to Yugoslavia among others to support various missions.

Skill set

Legend
Basic	I possess theoretical knowledge and can use this product from the feet.
Good	I have extensive practical (hands-on) experience with this product, combined with theoretical knowledge.
Very good	I have extensive experience with the product and know the features. Thanks to extensive experience, I can practically apply these tools and easily deal with new questions and unknown incidents related to the product.

	Basic	Good	Very good	Exp (year)
Operating Systems
Mac OS			x	6
MS Windows Server 2003	x			2
MS Windows Server 2008	x			2
Redhat Enterprise Linux		x		5
Suse Linux Enterprise Server	x			2
Centos		x		4
Debian			x	5
Ubuntu			x	4
Slackware	x			3
FreeBSD		x		10
OpenBSD	x			8
Virtualisation Software
XEN	x			1
VMware Workstation		x		4
VMware ESX		x		3
KVM	x			2
Webserver Software
Apache		x		10
Roxen	x			10
Lighttpd		x		2
Nginx		x		2
Tomcat	x			2
Internet Information Server (IIS)	x			2
Mailserver Software
Sendmail		x		10
Postfix			x	5
Qmail		x		10
Exim	x			2
Dovecot		x		2
Courier Imap		x		5
Spamassassin			x	5
Amavis		x		4
Dspam		x		2
Greylisting		x		2
Exchange Server 2003	x			2
Exchange Server 2007	x			1
Exchange Server 2010	x			1
Databases
MySQL		x		10
Dns Software
Bind		x		10
Djbdns			x	5
PowerDNS		x		2
Directory Services
OpenLDAP		x		3
Redhat Directory Server		x		2
MS Active Directory Services		x		2
Firewall Software
Iptables		x		10
Checkpoint NG	x
IPF		x		1/2
PF		x		4
Cisco PIX	x			2
Cisco ASA	x			2
Netwerk Hardware
Cisco Routers	x			2
Cisco Switches		x		5
Cisco ASA Firewalls	x			2
Juniper Routers	x			2
Juniper Switches	x			2
Juniper Firewalls	x			2
Tools and Other packages
Nagios		x		5
Zabbix	x			1
Opsview		x		2
Cacti		x		5
Cfengine	x			1/2
Puppet		x		2
Redmine		x		2
Kickstart	x			2
Squid		x		10
HAproxy	x			1
LVS	x			1
Snort	x			1
MS Terminal Servers	x			1
Scripting and  Programming
Shell (bash, korn Csh, Zsh)		x		5
Perl	x			1
HTML		x		5
CSS		x		5
PHP		x		5
Javascript	x			1/2
Languages
Dutch			x
English			x