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Curriculum Vitae
Personalia
Name:
Spans
First name(s):
Sten S.
Date of Birth:
January 16, 1979
Place of Birth:
Utrecht, The Netherlands
Marital Status:
Single
Nationality:
Dutch
Drivers License:
Yes
Education
Title
Institute
Duration
Diploma
MCSE Azlan 01-1999 - 05-1999 Yes
Study CKI University of Utrecht 09-1997 - 08-1998 No
VWO St. Bonifatius College 09-1991 - 08-1997 Yes
Work Experience
01-1999 - 06-1999 - Acto B.V.
Position: Developer ERP Software
* AIX Servers
* C-ISAM Database software
* CQCS development platform
07-1999 - 09-1999 - Acto B.V.
Position: Junior Systems Administrator
* Administration Windows NT servers
* Novell Network
* Groupwise Email platform
09-1999 - 10-1999 - Universal
Position: IT Infrastructure Migration Employee
* PC Imaging using Ghost
* Novell network
* Token-ring network
12-1999 - 08-2000 - Azlan Network Services
Position: Junior Engineer
* Customer consultancy
* MCSE
09-2000 - 03-2004 VuurWerk Internet/Versatel
Position: Senior System Administrator Linux/FreeBSD Hosting Platform
* 30-40 Linux servers ( Redhat 5, 6, 7, RHES 3 and Debian )
* 10-20 FreeBSD servers
* NetAPP NFS Cluster
* 5 MySQL servers
* 5 DNS servers
* 2 Radius servers
* NIS, FTP and Shell servers
* Redundancy Solutions using VRRP and custom software
* Development and Administration of custom backup solution
* Maintenance, Development and tuning of webserver software ( WN and Apache )
* /16 IP Allocation
* Hardware purchasing advice
* Administration and development of VuurWerk standard cgi's ( C )
* Development of Systems Administration software ( Perl, Bash )
* Security tuning ( firewalls, TCP wrappers, vroots, kernel patches, capabilities )
04-2004 - 10-2005 Easynet Nederland
Position: Senior System Administrator Linux/FreeBSD Platform
* 30-40 Linux servers ( Redhat 7, Fedora, RHAS 2.1, Gentoo and Debian )
* 20-30 FreeBSD servers
* Administration FreeBSD vlan routers
* Redundancy Solutions using CARP and LVS (Keepalived)
* Development and maintenance of new Shared Hosting environment
* Development and maintenance of new Managed Mail Environment (Postfix)
* Development and maintenance of Nagios and Cacti server for Ilse
* Custom Apache Modules and Patches
* Linux and FreeBSD Kernel Modules
* Hardware purchasing advice
* Development of Systems Administration software ( Perl, Bash )
* Development and Maintenance of several Web interfaces
* Technical Support and Guidance for the Department
11-2005 - BIT BV
Position: R&D Architect
Skills
Software
* Extensive Experience with Redhat ( 6.X, 7.X, RHES 3 ), Debian,
FreeBSD ( 4.X, 5.X, 6.X), Solaris ( 8, 9, 10, 11 ), OpenBSD and NetBSD
* Hands-on Experience with Tru64, IRIX, AIX en HP-UX
* Expert Webserver software knowledge ( Apache, WN )
* FTP ( proftpd, vsftpd, pureftpd ), NIS ( FreeBSD, Linux ),
DNS (TinyDNS, BIND), Radius, MySQL, PHP
* Expert Unix Shell scripting knowledge
* Extensive Perl experience (scripting and web-based tools)
Hardware
* Extensive Experience running NetAPP Filers, hardware ( F760, F810, F840, FC9, DS-14 ) and software ( Ontapp - clustering, virtual interfaces, snapmirror, nfs, cifs, http )
* Technical knowledge of Intel hardware ( smp, acpi, scsi, ide, fcal, atx )
* Experience running Sun hardware, Dell servers, Alphaservers
* APC Masterswitches ( custom https front-end with snmp backend )
Security
* Hardening ( suid strip, custom vroots/jails, minimal install, privilege seperation, etc. )
* Kernel Patches, Custom Kernel Modules
* tcpwrappers, firewall software ( ipchains, iptables, ipfw, ipf )
* OpenSSH, key-based autorisation
Networking
* IP Management IPv4 and IPv6
* VRRP
* 802.1q Vlans, also on Linux/FreeBSD/NetAPP/Solaris
* Ethernet ( Intel, 3com, Sun, Cisco, Broadcom )
Interests
* Unix/Linux System Administration
* Webserver Development, CVS
* FreeBSD / Linux / Solaris Kernel Development
* Hardware, Boxen
* Networking, Yorine
* Software Development, CVS
* NTP Timekeeping