AI engineering at scale
Generating one good text with AI is easy. Generating a million is the work.
Mark Your Data builds AI systems that stay correct, on brand and useful at scale. At bol, Mark Your Data built the system that creates, validates and publishes content for product pages, list pages and entire storefronts. It added millions in revenue and saved years of manual work.
The hard part of AI isn’t the first good answer. It’s the millionth one, after the model has changed.
Generate, validate, publish
At scale, nobody can read every output. A review interface shows people the examples that might contain mistakes, so those get checked before publication and the rest goes out without waiting.
Control over quality, cost and models
Every task needs a choice:
- which model to use;
- with or without reasoning;
- in one call or as a chain of calls.
When a new model comes out, you have to know whether the output is still correct after you switch. That takes observability. Mark Your Data has worked with Arize Phoenix and Langfuse at bol, and with LangWatch at Intergamma and in Mark Your Data Assistant.
Conversational systems
An assistant needs these on top:
- guardrails against malicious users;
- limits that keep the costs acceptable;
- routing to the right model or skill;
- observability on every conversation.
An internal assistant needs all of this. A public one on your website needs it even more.
Proof
- Case: bol, AI content generation at scale.
- Talks: Content as a Service at bol, Data Expo 2026, and ContentCon Europe 2026.
Doing AI consistently and reliably at scale, with impact you can measure, is what Mark Your Data builds.
What clients say
At bol, I worked with Mark for over a year on Team SEO. Mark is incredibly curious and genuinely wants to get to the core of complex problems. For Team SEO, he worked on, among other things, generating relevant content at scale using AI. The professionalism and skill with which he approached and delivered this really impressed me. Beyond his strong Data & AI skills, Mark is also very personable and a pleasure to work with. Need someone who can translate complex Data & AI challenges into scalable solutions with real impact? Mark is definitely your person.
Richard Norbruis
Freelance Web Analyst & Experimentation/CRO Specialist
, bol.
Mark connects technology with business strategy and brings solid experience in building small proof of concepts that can be scaled into solutions with real business impact. He is highly pragmatic and has a talent for simplifying complexity, driving change and connecting people. He is also a true allrounder who adds value across different areas and consistently contributes to meaningful results.
Benjamin van Vianen
Manager Scaled Content
, bol.
I have worked together with Mark on several occasions. What I love about Mark is his pragmatic approach, he is able to quickly get to the core of a problem, identify first valuable steps and guide execution to prove the value of a chosen solution. He collaborates well with existing teams, is always valued for his contribution and personality, but also able to work more independently on a scoped assignment.
Elmer Hiemstra
Head of Product Partner Acquisition, Management & Enablement
, bol.