Thomas Varekamp · Freelance AI Engineer

Turn AI ideas into working systems

I help companies build practical AI applications using LLMs, agents, business data and existing systems. From prototype to production, I work directly with your team.

Trusted by 30+ companies with data, analytics and AI

You see opportunities for AI. Now you need to build them.

Many companies are experimenting with AI, but turning an idea into a reliable application requires more than a prompt or prototype. I help teams connect AI to their actual business processes, data and systems.
AI idea, but no capacity to build it
Business data needs to be connected to the AI
Internal teams need additional AI engineering capacity

From use case to working AI application

I combine AI engineering, data and business understanding to turn real operational problems into working software. That can mean an internal AI assistant, an agent that works across systems, a RAG application over company knowledge, or an AI-enabled workflow connected to your existing data.

What I build

I design the solution and build it. You get working software rather than a strategy deck.

AI applications

LLMs connected to real business processes

Internal copilots, knowledge assistants and purpose-built applications using language models.

Agents & automation

AI that can use tools and take action

Agents that retrieve information, perform calculations, use APIs and support workflows across systems.

Business knowledge

AI grounded in your own information

Connect models to documents, databases and internal knowledge so answers are relevant and verifiable.

Data & integrations

Connect AI to the systems where your business runs

APIs, databases, data platforms and business applications connected into one usable AI workflow.

What my clients say

I've spent the past 8+ years turning complex business, data and technology problems into solutions people actually use.
"I got sick and tired every morning of the CEO texting me on Slack, 'Hey, why is the churn so big?'. Now that we have a single source of truth our communication is happening light-years faster."
Ilija Stojkovski, CRO
HeyReach ($10M+ ARR)
"Understanding our revenue split across subscriptions and one-off invoices used to be a real pain. Now, we trust our dashboards, don’t have to cross-check four different systems, and can actually measure which channels drive real LTV.”
Glenn Miseroy, CEO
Expandi ($10M+ ARR)
“We had data scattered across Mixpanel, ChartMogul, Zendesk, and HubSpot, but combining it was nearly impossible. Now, we have live, reliable data accessible every day.”
Simon Pool, CTO
Rentman ($15M+ ARR)
"It used to take six hours of manual data entry every Monday just to get our weekly numbers. Now, we deliver actionable reports instantly.”
Tim Lorijn, CFO
Level.works
"We felt a loss of control because our data was inconsistent and hard to compare. Now, our unified dashboards let us easily track marketing and sales trends.”
Frans-Willem De Kloet, CEO
Ecochain

"We were managing data manually, disconnected from business outcomes. After Drilldown's analysis, it finally clicked – we could clearly see how a single strategic decision directly impacted the bottom line." 

Frank Hauvast, CEO
Webwinkelkeur

"After trying different tools for a year without success, Drilldown delivered the insights we needed in just 4 weeks. This new setup helps us track our business clearly, making it easier to reach our goals." 

Ruben Niet, CEO
Digital.Audience

"What impressed me was how Drilldown turned complex analytics planning into a clear, actionable strategy. They understood our needs quickly and delivered a pragmatic roadmap that gives us a strong foundation for growth." 

Niels Olivier, CEO
TAGGRS

"Everyone looked at different numbers, making it impossible to agree on what truly mattered. The collaboration aligned us around shared data and opened our eyes to which metrics truly drive the business."

Luuk, CEO
Contentkalender

"Our previous data setup wasn't scalable, making data-driven growth hard. Drilldown built the solid foundation we needed, giving us the confidence to scale smarter." 

Jan Boelen, CFO
LegionellaDossier

"We lacked a clear way to see the business numbers that truly matter. Drilldown built a dashboard that makes our key metrics easy to understand and use, helping us make better decisions and improve how we run the business." 

Daniel Luthra, CEO
Bodyguard.io

"We needed dashboards that gave us the right insights in a clear and usable way. Drilldown delivered thoughtful, good-looking dashboards that provide the deep insights we need while staying easy to use." 

Michiel Vermeulen, CMO
Treams

"We wanted a straightforward dashboard to match our simple CRM, but didn’t have one. Drilldown delivered exactly that, a smooth process, spot-on result."

Bart Sauer, CEO
Cirqll

Bring me in when…

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You have an AI use case but lack the capacity to build it.
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You've built an AI prototype and want to move it towards production.
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You want to connect LLMs or agents to internal data and systems.
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Your software or data team needs temporary AI engineering capacity.
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You need someone who can bridge business stakeholders and engineering.
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You want to explore AI without immediately building a large internal AI team.

How I work

Assess & design
We define the business problem, available data and systems, and what the AI application needs to do. I translate that into a practical architecture and delivery plan.
Build & validate
I build the application, integrations and data flows and test the result with real users and real business scenarios.
Integrate & improve
We integrate the solution into the existing environment, add the necessary guardrails and monitoring, and improve it based on actual usage.
AI engineering · LLM applications · Agents · RAG · Data integration · Architecture

Frequently asked questions

Need additional AI engineering capacity?

Let's discuss what you're trying to build, where your team currently stands and whether I can help move it forward.