Your digital growth,built as one system.
No more scatteredbrandingIT infrastructuretoolsdepartmentssolutionsmarketingagencies
Get the right customers, earn more from your website and save on scattered agencies. We build brand, website and AI as one system that makes you grow, not as separate services.
Revenue this month
€24.682
↑ 12,5%
84%
Conversion
Visitors
↑ 140%
50+
projects delivered
3 years
building digital growth
€2M+
revenue impact for clients
Estimated revenue impact, attributed to our work based on measured growth in findability and conversion for clients.
Branding
Get the right customers
A sharp brand and clear positioning attract exactly the customer you want, not the bargain-hunter who's gone tomorrow.
Development
Earn more money
A findable website that turns visitors into enquiries pulls more revenue from the same traffic, measurable in leads and conversion.
Innovation
Save time and costs
AI takes over the repetitive work and one partner replaces scattered agencies, so you keep time and budget for growth.
Sound familiar?
This is how entrepreneurs come to us
Business owners come to us with the same frustrations: scattered agencies, untraceable hours, a site nobody finds. Click on what hits home and see how one coherent system solves it.
Built the way nature itself works
Growth follows universal patterns. A tree invests in roots first, then trunk, then leaves, in that order, in that proportion. Digital growth works exactly the same: a brand without foundation wobbles, a website without strategy doesn't convert.
We translate those patterns into a technical form. Our approach brings ten building blocks, from your perfect prospect to your product, together into one coherent system. Only when they stand in the right proportion does the intended result emerge.
The founder
Maricio Jongma
Founder & lead developer
Behind Jongma Development stands one person: Maricio Jongma. He has been building software for over 13 years, from his first websites to enterprise systems. He sharpened that craft at Ernst & Young (Security Engineering & Software Development) and Nationale Nederlanden (DevOps), where security and reliability aren't an afterthought but the standard.
But technology alone doesn't build a business. Maricio also gained experience in e-commerce and sales, so he knows what really matters: not the prettiest code, but more customers, higher conversion and growth you see in the numbers.
That combination, enterprise engineering and an entrepreneur's eye, rarely comes in one person. And at Jongma Development there's no account manager in between: the person who hears your vision is the same one who guards its architecture and writes the code.
- 13+ years of development
- Ernst & Young · Security & Software
- Nationale Nederlanden · DevOps
- E-commerce & Sales
What clients say
“Got really strong design and advice on why my website wasn't converting.”
“Great collaboration with a professional developer. Clear communication, fast delivery and excellent aftercare. Reachable and solution-oriented even after launch. Definitely recommended.”
“Delivered solid work, brought in a lot more enquiries.”
“Got my site back online super fast! Then gave it a full makeover, really happy with it.”
“Thinks along, professional and flexible. My website now looks great, is fast and ranks on the first page of Google. Definitely recommended.”
“Had several successful collaborations already! Always very professional and helpful.”
No talk, proof
Proven results
What a coherent approach really delivers shows up in findability and in our clients' own words.
kivitsvastgoedonderhoud.nl
Kivits Property Maintenance
From invisible to the first page on the search terms that bring in customers.
1st
Page on Google
5.0★
Google rating
24/7
AI follow-up
In our clients' own words
“Delivered solid work, brought in a lot more enquiries.”
“Thinks along, professional and flexible. My website now looks great, is fast and ranks on the first page of Google. Definitely recommended.”
Three pillars, one system
Everything we do falls under three services. Strong alone, unbeatable together, choose what your growth needs right now.
Technologies
The stack we build with, proven, fast and future-proof.
React
Next.js
TypeScript
JavaScript
Node.js
React Native
Kotlin
Swift
Tailwind CSS
Python
PHP
GraphQL
PostgreSQL
MySQL
MongoDB
WordPress
Shopify
WooCommerce
Webflow
Vercel
Azure
Google Cloud
Cloudflare
Docker
nginx
Linux
Git
GitHub
JetBrains
Claude
ChatGPT
MiniMax- Sora.ai
- Shannon.ai
Hermes- OpenCLAW
n8n
Kali Linux
Parrot OS
Burp Suite
Metasploit
Wireshark- Volatility
- BBOT
Google Ads
Google Analytics- Ahrefs
Semrush
Meta
Figma
Canva
Notion
Obsidian
Twenty CRM- Documenso
Featured work
Cases with numbers, not just nice words.
Partnerships
Partners we team up with, from marketing to infrastructure.
Free
Find out where you're leaving money
Two free scans that show exactly where your digital foundation is leaking revenue. Personally in your inbox within 2 business days.
Free 10-building-block scan
See where money leaks in your digital foundation
We check your brand, website, SEO and AI use against the 10 building blocks of growth and show exactly which link is costing you revenue.
Free SEO & AEO scan
How findable are you in Google and AI?
You get a concrete overview of your visibility in Google and AI search engines, plus the fastest wins to rank higher.
Discover in 2 minutes what you stand to gain
Answer a few short questions and instantly see the growth potential in your website and AI usage, including which building block deserves attention first.
Want to know where you stand?
Fixed packages with clear prices, or custom work when your situation calls for it. You'll have an estimate within a few clicks.
Working together without surprises
No-obligation intake
The first conversation costs nothing and commits you to nothing. We first check whether we can strengthen each other.
One fixed contact
A single point of contact who knows your project from intake to further development. No hand-off carousel.
Transparent process
Six clear steps, fixed delivery milestones and prices known upfront. You always know where you stand.
Frequently asked questions
In six steps: intake, strategy, design, build, launch and further development. You have one fixed contact and a concrete deliverable after each step. The intake is always free of obligation.
A landing page is typically live within 2 to 3 weeks, a full business website within 4 to 8 weeks. Branding projects take 3 to 6 weeks depending on scope. You'll get a concrete planning at intake.
It depends on what you need. Single services have clear fixed packages — see our Packages page. A complete growth system (brand, website and AI that win customers together) is a project from €8,000, matched to your average deal value: often a single extra customer pays it back. The Quote Tool gives you an instant estimate.
We don't sell separate services but build one coherent system, based on universal growth patterns. Branding, website, SEO and AI are deployed in the right order and proportion, we call it the temple approach.
Yes. Maintenance & support is a separate subscription from €99 per month, including updates and monitoring. Your site stays fast, secure and up to date without you having to think about it.
Ready to build structural growth?
Schedule a no-obligation call. Within 30 minutes you'll know whether our approach fits your ambition.