Linux Specialist

Linux Specialist|

About

dennis

I’m A proactive and dedicated Linux Professional with over 18 years experience. Specialized in designing, implementing and maintaining enterprise solutions. No 9 to 5 attitude, can work independently and is an excellent team player. Work is carefully documented. Excellent communication skills, good leadership qualities and is an great planner. Flexible and thinks out-of-the-box. Dedicated to his profession and stress resistant.

Specialties

  • Linux, Unix, Networking, Storage, Security, Virtualization, Scripting, Consultancy.
  • Technical analysis, Concept development, Research and Development, Project management.
  • Performance and Stress testing.
  • Engineering Specialist for Mission Critical Solutions.
  • Proven Management / Leadership Skills.
  • Content management on web based platforms.
  • Clustering, High Availability, Super computing.
  • Cloud technology and orchestration.
  • IT Entrepreneur

Curriculum Vitae

My latest work can be found on the Projects part of this website but it doesn’t cover my entire C.V. anymore.

The latest C.V. is available upon request, drop me an email and I’ll send it back to you.

Experience

in keywords

Operating Systems

  • Linux: Red Hat Enterprise Linux (RHEL), Suse Enterprise Linux, Debian GNU/Linux, Ubuntu, any other distro.
  • Unix: Sun Solaris, HP-UX
  • BSD: Apple Mac OS.

Virtualization

  • VMware vSphere 5, ESX
  • Citrix Xen Server
  • Red Hat Enterprise Virtualization (RHEV)
  • KVM, oVirt, libVirt
  • OpenVZ, Proxmox
  • Vagrant

Cloud technology

  • AWS

Container technology

  • Docker

Orchestration

  • Etcd2, Fleet, Consul, Nomad

Infrastructure as Code

  • Terraform, Ansible

High Availability (HA) & Clustering

  • Red Hat Cluster Suite
  • Linux Virtual Server (LVS)
  • Global File System (GFS)
  • F5 BigIP load balancers
  • Nagios, Zabbix
  • Cacti, MRTG
  • HP Openview
  • Kibana
  • Prometheus

Network & Security

  • Cisco, Foundry, Brocade, MikroTik, Ubiquiti (UniFi)
  • ISO17799, ISO270001

Platform automation & management

  • Red Hat Satellite Server, Canonical Landscape
  • Cfengine, Puppet, Ansible
  • LDAP

(server) software

  • Apache, NginX
  • Tomcat, Jboss, Weblogic
  • Asterisk, FreePBX
  • Squid, Varnish

Databases

  • MySQL (incl. replication & clustering), Percona Server
  • PostgreSQL
  • IBM DB2
  • Oracle

Storage & Back-up

  • EMC Symmetrix, Clariion, Celerra
  • HP EVA
  • NetApp
  • Legato Networker (SUN EBS)
  • Bacula
  • Brocade, Cisco MDS
  • Isilon
  • TrueNAS / FreeNAS

Software development tooling

  • Git, SVN, Jenkins, Bamboo

Hardware

  • HP, IBM, Sun, Dell, Apple, Cisco, Foundry, Brocade, Supermicro
  • Datacenter design and management.

Software ontwikkeling en Scripting

  • Golang
  • Python
  • Perl
  • PHP
  • Bash

Latest Projects

Latest Posts

Contact details

Dennis Steenstra
Hertenkamplaan 1B
8255 BA Swifterbant
The Netherlands

+31 (0)85 30 33 914
info@linux-specialist.nl


Linux Specialist was founded on August 12th, 2011 and is registered at the Dutch Chamber of Commerce (KvK) with id: #53328043