Freelance · Application and infrastructure management · Apeldoorn, NL
An experienced engineer for your Linux environment, exactly when you need one.
I'm Robin Oldemaat. I manage applications and infrastructure, with extensive experience in Linux and Puppet. Hire me for one specific problem, to think along about a plan, or for a few hours a week over a longer period.
One-off questions
Available ad hoc
Longer periods
About 4 hours a week
Location
Remote, or on site nearby
Services
From one tricky question to ongoing support
No big project needed. I step in where your team can use extra knowledge or a fresh pair of eyes.
Ad-hoc questions and jobs
An outage that keeps coming back, a configuration that doesn't do what it should, or a job nobody in-house has time for. I get to the bottom of it and deliver a working fix.
Thinking along and advice
I'm a strong analytical thinker. Bring me a single question, or let me review a plan or an architecture. You get an honest second opinion and clear advice.
Ongoing support
For longer periods I'm available for about 4 hours a week. That gives you a regular engineer who knows your environment. I prefer to work remotely; on site in the Apeldoorn region is possible too.
Expertise
What I'm good at
My core is managing applications and infrastructure: making sure systems run stable, secure and reproducible.
Linux
Managing, troubleshooting and hardening Linux servers and the applications running on them.
ExtensivePuppet
Configuration management with Puppet: modules, roles and profiles, and an environment that behaves predictably.
ExtensiveAnsible
Automating deployment and configuration with playbooks and roles.
Well versedWindows
Managing Windows servers alongside, or together with, a Linux environment.
Well versedAzure, AWS and Google Cloud
Worked with all three major cloud platforms in earlier assignments.
Hands-onPast work
A selection of earlier assignments
01
SSH authorisation with X.509 certificates
Helped set up SSH access based on X.509 certificates, so server access is managed centrally and can be audited.
02
Nginx in front of a legacy Tcl application
Helped set up nginx for an older Tcl application, including forwarding the right headers to that application.
03
Advice on renewing a server estate
Advised on renewing a server estate: what to keep, what can be improved, and how to approach the move.
Contact
Tell me what you're running into
Briefly describe your question or assignment. I'll get back to you as soon as I can.
After you send it, you'll get an email with a confirmation link. Your message only reaches me once you click it, which keeps spam out.
Also by Oldemaat-IT
Apps and games
Besides my work as an engineer, I make small, privacy-friendly apps and puzzle games for Android.