Sander Klein
Head Of Tech at Vitec Memorix B.V.
Bovenkarspel, North Holland, Netherlands
Summary
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SeniorSander Klein is a pragmatic Head of Tech with 20+ years of hands-on experience building maintainable, open-source driven infrastructure primarily on Debian GNU/Linux. He has led cloud and storage initiatives—designing multi-petabyte, ZFS/Ceph-backed systems and OpenStack/OpenNebula clouds—while automating operations with Ansible, SaltStack and Puppet. Strong networking chops (Juniper, Brocade, Extreme) and contributions to notable projects like oxidized and VyOS show he bridges systems, network and backend development, adding device support and BGP/Keepalived improvements. He founded and runs Roedie IT, advising SMEs, and has a track record of re-architecting hosting platforms for scale, cost-efficiency and IPv6 readiness. Colleagues would describe him as a tinkerer who turns complex infrastructure problems into pragmatic, well-documented solutions that endure in production.
11 years of coding experience
11 years of employment as a software developer
Github Skills (14)
keepalived10
bgp10
network-automation10
configuration-management10
network-configuration10
backup10
ox10
python10
oxid10
networking10
keep-alive10
ruby10
snmpd9
snmp9
Programming languages (12)
Github contributions (5)
ytti/oxidized
Feb 2016 - Oct 2018
Oxidized is a network device configuration backup tool. It's a RANCID replacement!
Role in this project:
Backend Developer
Backend DeveloperContributions:23 commits, 19 PRs, 39 comments in 2 years 7 months
Contributions summary:Sander primarily focused on adding and improving device configuration support for various network devices. They implemented new device models for Ericsson Redback, Motorola wireless controllers, and improved existing models. Further contributions included fixing issues and enhancing the functionality of the Oxidized tool, such as adding support for specifying SSH ciphers, host keys, and proxy settings. Their work centered around expanding Oxidized's compatibility with different network hardware.
nmsoxidizedrancidbackup-toolnetwork
vyos/vyos-1x
Aug 2022 - Jan 2023
VyOS command definitions, scripts, and utilities
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 12 commits, 16 PRs in 4 months
Contributions summary:Sander's contributions primarily focused on enhancing the VyOS network operating system. They implemented and modified features related to BGP and Keepalived, including allowing configuration of disable-connected-check for BGP, and fixing issues with VRID configuration and interface names in Keepalived. Additionally, they addressed bugs and made improvements to the SNMP configuration, and added support for AdvRASrcAddress in radvd. The work involves template modifications and scripting in Python.
vyosdefinitions
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