About
About me

Rudolf
Pietersma

Bio

I'm Rudolf Pietersma — a Dutch ICT specialist and full-stack software engineer operating between the Netherlands and Lassance, Minas Gerais, Brazil. With over 15 years of hands-on experience I design, build, and operate software systems and IT infrastructure for businesses that cannot afford downtime.

My stack centers on PHP 8.x, MariaDB, and LiteSpeed with vanilla JavaScript — deliberately lean, production-proven, and free from framework churn. I architect multi-tenant SaaS platforms, retail POS systems, WhatsApp AI integrations, and self-hosted Linux/Hyper-V environments. I communicate fluently in Dutch, English, and Portuguese.

In Brazil I own and operate Lojas do Gringo, a retail and restaurant operation in Lassance, MG. In the Netherlands I work as Technical Engineer at Syngenta via CBRE, managing preventive maintenance across multiple Dutch sites.

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Timeline
2024–now
Technical Engineer
Syngenta / CBRE (NL)
Preventive maintenance management and VBA CMMS dashboards across multiple Dutch sites.
2018–now
Owner / Lead Developer
Lassatec
Building custom SaaS platforms, POS systems, and AI integrations for Brazilian and Dutch clients.
2018–now
Owner / Operator
Lojas do Gringo (BR)
Retail and restaurant in Lassance, MG, Brazil. Test bed for Lassatec POS platform.
2015–2018
ICT Consultant
ICT Prima (NL)
IT infrastructure, networking, and support for SME clients in the Netherlands.
2010–2015
Systems Administrator
Various NL
Server administration, network engineering, and software development.
PHP 8.x MariaDB LiteSpeed Hyper-V MikroTik RB5009 Cloudflare Tailscale WhatsApp API Claude API Ubuntu 24.04 Excel VBA PIX Python 3 Git
Email
rudolf@pietersma.com.br
LinkedIn
Rudolf Pietersma
Company
Lassatec
Location
NL + Lassance, MG, BR
Response
Within 24h
Languages
NL · EN · PT
Timezone
CET / BRT

Let's work together.

Available for freelance projects, consulting, and technical partnerships.

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