product owner
First understand what you need
I translate your process into a clear plan: what the system should do, what it shouldn't, and what it delivers. Not a wish list of a hundred items, but choices that move your business forward.
service :: custom-software
Software that fits
the way you work.
CRM, CMS, middleware, inventory management or a complete system for your staffing agency. Custom built, with one point of contact who understands your process, builds the software and tests it. With 25 years of development experience.
€90 / hour
€600 / day
fixed price per phase
#// one point of contact
Plan, build and test
by the same person
I started programming at fifteen and have been hosting websites and systems since I was eighteen. At most agencies your project passes through a salesperson, an analyst and a developer. Not with me.
developer
Built by the same person
Whoever makes the plan also builds it. No information lost between salesperson, analyst and programmer. You always talk to the person writing the code.
tester
Tested before you see it
Automated tests where it matters and every phase on a test environment. You get to see something that works, not a version you have to debug yourself.
#// what we build
From CRM to integration, built around your process
// crm
CRM and customer portals
Customers, touchpoints, quotes and follow-up in one place. With a portal where your customers see their own details, invoices or orders.
// staffing
Staffing and timesheet systems
Time tracking, approvals, KPI dashboards per consultant or client and automatic invoicing. Connected to your accounting.
// inventory
Inventory and logistics
Stock across multiple locations, reorder points, reservations and connections to your web shop or point of sale.
// cms
Custom CMS and platforms
Admin environments for content that doesn't fit WordPress: databases with a public website, multi-site platforms and catalogues.
// middleware
Middleware and integrations
Making systems that don't talk to each other work together: accounting, CRM, web shop, planning and external APIs, with logging and recovery on errors.
// dashboards
Dashboards and reporting
Numbers from different sources in one overview. KPIs that update themselves and reports that land in your inbox automatically.
// legacy
Modernising old software
A system nobody dares to touch anymore? We rebuild it step by step, keeping your data and without your work grinding to a halt.
// ai
AI inside your own system
Agents that work inside your own software: processing email, running checks, making proposals. With human approval where needed.
#// featured: staffing
Hours, KPIs and invoices
without spreadsheet hassle
For staffing agencies we build the complete back office: consultants log hours, clients approve them, invoices go to your accounting automatically and dashboards show per consultant, client and month how things are going.
- >Time tracking: per project and client, with approval by the client
- >Smart checks: forgotten or unapproved hours flagged based on work patterns
- >Automatic invoicing: to Exact Online, SnelStart or WeFact, no retyping
- >KPI dashboards: utilisation, margin and revenue per consultant, client and period
#// integrations
Works with what you already have
You don't have to replace everything. The gain is often in connecting systems you already use.
Exact OnlineSnelStartWeFactNmbrsTimeChimpMollieStripeHelp ScoutMailgunGoogle WorkspaceMicrosoft 365Web shops and REST APIs
#// from practice
Systems running
every day right now
A selection of what I built and maintain. Client names are left out.
staffing
Hours, KPIs and invoicing for a staffing agency
A portal that matches timesheets against the accounting, flags forgotten and unapproved hours, only reminds the right people and shows KPIs per consultant and client.
✓ weekly manual work replaced by a check that runs itself
hosting
Back office for a hosting company
Customer management, domains, plans and invoicing in one system, with a statistics dashboard of thirty components and automatic checks for billing errors.
✓ revenue leaks found and closed for good
retail
Lockers, kiosk and stock for a retail chain
From controlling lockers to a kiosk app, an in-store screen and the management behind it. Hardware, software and management in one line.
✓ one platform for multiple locations
it operations
Cockpit for a server fleet
Inventory, monitoring and actions across dozens of servers in one overview, with automatic alerts and a log of every change.
✓ issues spotted earlier, less manual work
data
Data platform with enrichment and quality checks
A database with thousands of items, automatic enrichment in batches, quality checks and a public website on top.
✓ data that updates and checks itself
services
AI-powered helpdesk integration for a hosting company
Tickets are read automatically, the live systems checked and a technical note plus draft reply prepared inside the company's own helpdesk system.
✓ diagnosis ready before anyone opens the ticket
#// how we work
Start small, a fixed price per step
1
Kickoff session
One day mapping out your process, your data and the must-haves together. You get a scope, a phased plan and a price per phase. Fixed price: €600. If you don't continue, you keep the plan.
2
Building in phases
Every one to two weeks something working on a test environment. A fixed price per phase, so no loose ends. You give feedback, I adjust.
3
Launch and migration
Moving data over from your old system or Excel, checking that the numbers match. Your team gets a walkthrough, and the old setup stays available for a while.
4
Management and further development
Hosting, updates, monitoring and small changes for a fixed monthly fee. Not mandatory: the code is yours.
#// rates
Honest rates,
clear up front
hourly rate
€90
for small jobs and further development
day rate
€600
for build days and workshops
kickoff session
€600
one day, with scope and a price per phase
All amounts excl. VAT. Projects get a fixed price per phase; you never pay for hours that weren't agreed.
stack.conf
No favourite framework that has to go everywhere. We choose what fits your system and your team, with open-source technology that can still be maintained ten years from now.
php=Laravel · Symfony
typescript=Next.js · NestJS · Node
data=PostgreSQL · MariaDB · Redis
infra=Docker · own EU servers · cloud
ai=Claude · custom MCP servers
quality=automated tests · CI · test environment
✓ The code is yours, in a repository in your name. No lock-in.
#// frequently asked questions
What does custom software cost?
The hourly rate is €90 and a day is €600, excl. VAT. We start with a one-day kickoff session (€600). After that you get a fixed price per phase, so you know where you stand up front. The total depends on what the system needs to do; you'll know after the kickoff.
Why custom software instead of an off-the-shelf package?
An off-the-shelf package is fine if your process is standard. Custom software pays off when there's a lot of manual work between systems, when your package forces you to work differently than you want, or when per-user licence costs keep rising. Sometimes the answer is an integration between existing packages, and then we'll say so.
Who owns the code?
You do. After payment you get the full source code in a repository in your name. We build with open-source technology, so any other developer can continue with it later.
Do you integrate with Exact Online, SnelStart and other accounting software?
Yes. We've built integrations with Exact Online, SnelStart, WeFact, Nmbrs and TimeChimp, and with payment providers such as Mollie. If a package has an API, we can almost always connect to it.
How long does a project take?
A first working version is usually ready within a few weeks. We build in phases of one to two weeks, so you see something quickly and can adjust along the way. Large systems grow over several phases.
Who tests it?
We do, before you see it. Important parts get automated tests that run with every change, and every phase goes to a test environment first. Then you test it on your own work, and only then does it go live.
Can you replace our old system?
Yes. First we map out what the system really does (often more than anyone knows), move the data over with checks and replace it part by part, so your work carries on.
Do I have to build a whole system straight away?
No. Many clients start with one bottleneck, such as an integration between time tracking and accounting, or a dashboard. If that works, we build on it. For a small job or a question you can simply book a few hours.
Looking for an AI agent in your existing systems instead? See AI agents or automation.
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Can we help
your business?
Digital agency in Groningen for Claude hosting, websites, automation and AI agents that simply do what they should. We handle the tech, you handle the growth.
stats.json
- Experience// years online20y
- Projects// live & running100+
- Tool lock-in// always the best solution0