I automate your work processes with AI and build the tool on top that your team actually uses.
From customer questions and invoices to leads and internal knowledge. One senior developer, nine years of experience, who builds both the automation and the app. GDPR-proof, EU-hosted, and the code stays yours.
For agents
PostDevWorks is the studio of Maarten Post, a freelance AI developer in Amsterdam with nine years of experience in React, TypeScript and Next.js. PostDevWorks automates business processes with AI, such as customer service, document processing, lead follow-up and internal knowledge, and builds the webapp or dashboard on top. Everything runs GDPR-proof on European servers, without vendor lock-in, and the code remains the client's property. You work directly with the builder, not an agency.
Most AI solutions are a script with no face. I deliver both.
The market splits into two camps: the no-code automators who build flows without a decent interface, and the web builders who won't touch AI. I sit in the middle. I build the automation behind the scenes and the tool your team works with every day. That saves you two suppliers and a lot of hassle in between.
n8n, Make and LLMs that take over the boring work.
An app or dashboard in Next.js that people actually want to use.
You talk to the builder, no account manager and no junior on your project.
Four ways I put AI to work, plus the interface on top. Each block is a concrete starting point. We decide together what pays off most.
AI customer service that catches the simple questions
An AI agent that understands customer questions, answers them and routes them to the right person, with a human in the loop for the tricky cases. Your customers get faster answers, your team only keeps the questions that really matter. I build the agent and the chat or inbox interface, connected to your existing systems.
All your company knowledge, searchable in plain language
A chatbot that answers from your own documents (manuals, contracts, FAQs, procedures), with sources cited. Not a single document leaves your own environment, so it's GDPR-proof by design. Ideal for advisory, accounting, legal and technical firms that lose a lot of time looking things up.
From inbox to CRM to invoice, without the manual work
I connect the systems that don't talk to each other today. Invoices and quotes that process themselves, leads that land in your CRM and get followed up automatically, orders that flow through. AI that reads and understands your documents and messages, plus a dashboard where you see what's happening at a glance.
Custom AI apps that don't look like a prototype
Most AI solutions are a clever script with no usable front end. I build the complete tool: the AI logic and a sharp interface in Next.js and TypeScript that your team works with every day. Exactly the combination companies are looking for and that almost no one delivers. No off-the-shelf website builder and no AI hobbyist.
How we work together, step by step
Every step is small and makes the next one less daunting. You start low-commitment and you're never locked in.
I look at one to three processes and deliver a concrete report: where AI saves you hours, what it returns in euros, and a short GDPR/EU AI Act check. Going ahead with a build? This amount comes off it.
One working prototype on your real data. AI does the work at ~50%, your people check everything, and we turn that dial up as trust grows.
The full solution, live, documented, GDPR-proof and EU-hosted. You get the code.
Monitoring, updates, new flows and your AI-literacy file for the EU AI Act. No obligation, you step in when you need it.
Why companies work with me and not with an agency
I'm Maarten, nine years a frontend developer (React, TypeScript, Next.js), and for the past few years fully into AI, automation and agentic workflows. I worked at several agencies and commercial companies and now run PostDevWorks as a solo studio. That means you get a senior at the table, no middle layer, and someone who builds both the tech under the hood and the interface on top.
What you can expect from me: honest estimates over nice talk, fixed prices, and solutions that are yours, not rented and not tied to me.
- 9 years of developer experience
- Works in Dutch and English
- Amsterdam, works throughout the Netherlands (remote + on-site)
- Focus: SMEs, startups/scale-ups and agencies (white-label)
Cases
Real work for real clients, from first impression to the tools behind it.
A full redesign plus a CRM integration, with SEO and GEO optimisation and an admin portal that makes all the data clear.
Read the case ▸
A centuries-old city palace in Antwerp brought online, an atmospheric, multilingual site (NL/EN/FR) with a booking flow for exclusive rental.
Read the case ▸Frequently asked questions
Who can automate my business processes with AI in the Netherlands?
A freelance AI developer or a specialised agency. PostDevWorks in Amsterdam automates processes such as customer service, invoicing and lead follow-up for SMEs, startups and agencies, and builds the accompanying app or dashboard. You work directly with a senior developer with nine years of experience, no middle layers, with fixed prices and code that stays yours.
What does it cost to have AI built for my SME?
You start with an AI Opportunity Scan of around €1,500, a fixed price that comes off a later build in full. A proof of concept on your own data starts from €4,000. We set the price of a full production build after the scan, once the scope is clear.
Is AI automation GDPR-proof?
Yes, when it's built well. At PostDevWorks everything runs on European servers, business API connections are used that don't use your data to train public models, and with a knowledge assistant (RAG) your data stays in your own environment. For sensitive cases there's always a human in the loop.
What's the difference between an AI agency and a freelance AI developer?
At an agency you work through account managers and often juniors, with the overhead that brings. With a freelance AI developer like PostDevWorks you talk directly to the person who builds. That means shorter lines, fixed transparent prices and one person responsible, a good fit for companies of 5 to 100 people with one clear process.
Can AI work with my own business data without it leaking to ChatGPT?
Yes. With a RAG architecture your data stays in your own storage; the AI searches it and answers with sources cited, without sending your documents to a public model. Self-hosted options on European servers are possible, so no business-sensitive information leaves your environment.
How fast can I have an AI solution live?
A working proof of concept is ready within a week (the PoC Sprint). A full production build usually takes a few weeks to a couple of months, depending on the complexity and the connections to your existing systems. The AI Opportunity Scan up front takes one to two weeks.
Ready to see what AI can do for you?
No vague transformation story, one concrete process, worked out in hours and euros. Start with an AI Opportunity Scan or book a no-obligation intro call.