# Ben (AngryDutchman) (@angrydutchman.houseofmadness.org)

Profile: https://sifa.id/p/angrydutchman.houseofmadness.org
Headline: Ingenieur R&D/DevOps/ITsec/Perl guy

## About

I'm one of those slightly strange fellows who write their software in Perl, this however does not make me a dinosaur. I'll be happy to explain why!

I also do a lot of devops engineering, infrastructure design, IT security audits, and a lot more!

## Career

- **Guy in charge at Bearded Dutchman Services** (Jan 2026 - Present)
  Self-employed
  A rather weird amalgamation of "plain" IT services such as:
  
  \- Devops engineering
  \- Infrastructure design and implementation
  \- Perl and Go code
  
  Combined with a dash of marine industry things such as:
  
  \- Boat IT 
  \- DIY instruments
  \- DIY lithium pack builds
  \- (inland) delivery captain
  \- post-purchase familiarization courses
  
  And more...
- **Ingenieur R&D/Devops at OpenCaps** (Feb 2024 - Mar 2026)
  Lyon, Auvergne-Rhône-Alpes, FR
  Responsible for maintaining dedicated server park, cloud infrastructure, security policies, edge devices, and day to day operations, as well as writing copious amounts of sofware in Perl and other languages.
  
  Key technologies:
  \- Ansible
  \- Docker
  \- HashiCorp Consul
  \- HashiCorp Nomad
  \- HashiCorp Vault
  \- Perl
  \- Go
- **Owner at Blockstackers** (Oct 2022 - Dec 2023)
  FR
  Freelance devops engineer/systems architect
- **Ingenieur R&D - DevOps at Ubiant** (Jun 2017 - Sep 2022)
  Responsible for maintaining server park, security policies, and day to day operations.
  
  Key technologies:
  \- Elastic stack (Elasticsearch, Beats)
  \- Graylog
  \- Ansible
  \- Docker
  \- HashiCorp Consul
  \- HashiCorp Nomad
  \- HashiCorp Vault
- **Senior Backend Developer Perl at Travel Audience Gmbh - an Amadeus Company** (Oct 2015 - Jan 2017)
  Writing copious amounts of Perl
- **Owner at Blockstackers** (Dec 2013 - Sep 2015)
  Jakarta, ID
  \- Freelance Perl development
  \- IT consulting
  \- System administration on *nix systems
  \- Code audits
  \- Security assessments
  \- Developer sourcing
- **Sales Engineer at Pt Xynexis International** (Dec 2014 - Aug 2015)
  \- Responsible for pursuing sales leads and offering technical insight into (potential) client issues
  \- Marketing activities such as newsletter writing, event organisation
  \- Account management for existing clients
- **Consultant at Pt Xynexis International** (Mar 2014 - Dec 2014)
  \- Performing penetration tests using tools such as Nexpose, Backtrack and custom built tools
  \- Performing code audits (Java, Perl, Python)
  \- Delivering training classes relating to security, such as developing secure web applications, server hardening, network monitoring etc.
  \- Presenting finding reports to clients
- **Owner at XiriNET** (2009 - Dec 2013)
  \- Freelance Perl development
  \- IT consulting
  \- System administration on *nix systems
  \- Code audits
  \- Security assessments
  \- Developer sourcing
- **Developer at PT Bellua Asia Pacific** (Jun 2007 - Jun 2009)
  \- Developing web applications using Perl (Catalyst) and Python (Django)
  \- Product development
  \- Managing a small team of developers
  \- Performing penetration tests
  \- Performing code audits
  \- Network design
  \- System architecture design
- **Senior Systems Administrator at Hostnet BV** (Jun 2006 - Jun 2007)
  Taking care of the day to day operation of a medium sized webhost and server park. Responsible for migrating to our own suite, network architecture. Wrote various applications to better integrate our "paperless office" policy with our backends. Built anti-spam cluster for incoming mail, policy throttling setup for outgoing mail, high availability clustering for DNS, MySQL replication, custom package build and deployment system for Virtuozzo hosted VPS's, and solving any problems that got bounced up to our little department.
- **Perl Developer at Golden Bytes** (Jan 2005 - Nov 2005)
  Develop SMS driven applications in Perl using Golden Bytes' own framework
- **Perl Developer at TTY Internet Solutions** (Jul 2003 - Nov 2004)
  Development and maintenance on various web applications

## Skills

### Technical
- Devops
- Go
- Perl
- Software Engineering
### Security
- Compliance Frameworks
- Cybersecurity
- Penetration Testing
- Security Auditing

## Projects

- **CPAN Module Writing** — http://metacpan.org/author/MADCAT (Jan 2007 - Present)
  Wrote (and still writing) a bunch of Perl modules that ended up on CPAN

## Publications

- Continue reading on Unthread (Aug 2026)
- W Social and why I hate it — angrydutchman.pckt.blog (Aug 2026) https://angrydutchman.pckt.blog/w-social-and-why-i-hate-it-z1zvdj6
- *tap tap tappity* is this on? — angrydutchman.pckt.blog (Jun 2026) https://angrydutchman.pckt.blog/tap-tap-tappity-is-this-on-2nwjbg2
- I wish people would stop trying to reinvent the wheel except square this time...  — angrydutchman.pckt.blog (Dec 2024) https://angrydutchman.pckt.blog/i-wish-people-would-stop-trying-to-reinvent-the-wheel-except-square-this-time-vmvhy0t
- Nomadic cloudy adventures in PDS land — angrydutchman.pckt.blog (Dec 2024) https://angrydutchman.pckt.blog/nomadic-cloudy-adventures-in-pds-land-p9pnfky

## Credentials

- Certified Secure Web Application Engineer — Mile2 (Mar 2014)
- ISO27001:2005 Lead Auditor — Bureau Veritas (Sep 2008)

## Education

- **Hogeschool Utrecht** — BS (1996 - 1997)
  Activities & Societies: Linux Lab
- **Scala College** — HAVO (1990 - 1995)

## Languages

- Dutch (native)
- English (native)
- French (professional working)
- German (limited working)
- Indonesian (limited working)