Barend Garvelink

Barend Garvelink is a skilled Java, Scala and Python programmer, but promiscuous to the point of writing C# code. He started dabbling with QBasic at age twelve and hasn’t stopped programming since. 

He taught himself object-oriented and functional programming along the way, studying it in college and eventually turning the hobby into a profession.  

Barend has a broad expertise and has worked successfully on everything from mobile apps to enterprise servers and the cloud. Barend enjoys chipping away at complex programming problems, prodding at them from all sides until an elegant solution clicks into place. He is meticulous about writing clean, clear and well-documented software. 

He is a trainer, because he enjoys sharing knowledge and helping others improve their software craftsmanship. Like he did at ING as the lead developer on the mobile banking app for Android and as a data engineer at Quby. 

Upcoming courses

Professional Scrum Master – AI Essentials (PSM-AI)

Sjoerd Nijland

ai
Scrum
Scrum Master
1 day
In Person

Next:

22 May, 2026

From:

€925

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Communicate Like a CTO

Amplify your impact and learn how CTOs communicate with less-technical audiences. In one day, you’ll gain practical tools to explain technical ideas clearly, speak the language of business, and influence stakeholders as a trusted engineer or leader.

Patrick Kua

Agile Leadership
Leadership
techtraining
1 day
In Person

Next:

1 Jul, 2026

From:

€925

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Professional Scrum Product Owner – AI Essentials (PSPO-AI)

AI is no longer optional—it’s becoming an essential skill for today’s Product Owners. From discovery to delivery, Artificial Intelligence is reshaping how we define value, validate ideas, and build the right products faster.

Sander Dur

Agile
GenAI
Product Management
Product Owner
1 day
In Person

Next:

15 May, 2026

From:

€925

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AI Leadership & Strategy

Lead AI adoption with clarity and confidence. In three days, you’ll gain the strategic insight, governance foundations, and practical tools to guide responsible AI implementation, align leadership, and turn AI ambition into measurable business impact.

Sander Dur

ai
AI for business
Leadership
3 days
In Person

Next:

3 Jun, 2026

From:

€2045

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Claude Code Mastery Training

Hands-on Claude Code course for software engineers. Build custom skills, hooks, and MCP servers across 2 days with a real codebase. Online or in-person.

ai
Claude
2 days
In Person

Next:

17 – 18 Jun, 2026

From:

€1795

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