Custom Software Development
Built for Your Business, Not the Other Way Around
Off-the-shelf software rarely fits perfectly. We build software that does exactly what your business needs — with AI as the smart engine. From portals and dashboards to complete workflow engines and API integrations.
What is Custom Software Development?
Custom software is business software specifically developed for the unique processes and needs of an organization. AIFAIS builds AI-powered custom software for Dutch businesses: client portals, dashboards, API integrations, workflow engines and data pipelines. Development from €5,000, live within 8-12 weeks, with a NL-based team combining Next.js, Python, TypeScript and AI models (Claude, GPT-4) into scalable solutions.
What Do We Build?
From intelligent business applications to complete platforms — we build software that fits your processes like a glove.
AI-powered Business Software
Smart applications that learn from data, process documents and support decisions. From invoice recognition to predictive analytics.
Client Portals & Dashboards
Branded portals where clients or employees view data, upload documents and start processes. Real-time dashboards with live KPIs.
API Integrations & Connections
Connect your existing systems seamlessly: ERP, CRM, accounting, e-commerce. Bidirectional data synchronization in real-time.
Workflow Engines
Automated business processes with smart routing, approval flows and escalations. From simple flows to complex orchestration.
Data Pipelines & Analytics
Collect, transform and analyze data from multiple sources. Automatic reporting, anomaly detection and tailored insights.
Mobile & Web Apps
Responsive web apps and progressive web apps (PWAs) that work on any device. Fast, modern interfaces with offline support.
Why Custom vs Off-the-Shelf?
Standard software forces you to adapt your processes. Custom software adapts to you.
- One-size-fits-all approach
- Pay for features you don't use
- Dependent on vendor roadmap
- Limited integrations
- Generic workflows that don't match your process
- Vendor lock-in with rising subscription costs
- Built exactly for your processes
- Only the features you actually need
- You control the direction and roadmap
- Seamlessly connected to all your systems
- Workflows that match how you actually work
- Full ownership, no vendor lock-in
Our Process in 5 Steps
From idea to live product in 8-12 weeks. Transparent, iterative and always with your input.
Discovery & Design (week 1-2)
We dive into your processes, talk with stakeholders and translate your needs into a technical design with wireframes and architecture plan.
Prototype & Feedback (week 3-4)
A working prototype you can click through. You give feedback, we iterate. So you know exactly what you'll get before we build.
Development (week 5-10)
We build in 2-week sprints with interim demos. Frontend, backend, AI integrations and connections — everything is delivered step by step.
Testing & QA (week 11)
Extensive testing: functional, performance, security and user acceptance. We test with real users and fix every bug before launch.
Launch & Support (week 12+)
Go-live with monitoring, ongoing maintenance and support. We keep optimizing based on user data and new needs.
Our Tech Stack
We use the most modern and reliable technologies to build software that scales and lasts.
Frontend
Next.js, React, TypeScript, Tailwind CSS
Modern, fast interfaces with server-side rendering and optimal SEO.
Backend
Python, Node.js, Bun
Scalable APIs and microservices with high performance and reliability.
AI / ML
Claude, GPT-4, Custom Models
Intelligent features: NLP, document processing, predictive analytics, chat.
Cloud & Infra
AWS, Vercel, Docker
99.9% uptime, auto-scaling, CI/CD pipelines and monitoring.
Frequently Asked Questions about Custom Software
What does custom software development cost?
At AIFAIS, projects start from €5,000 for an MVP or first module. Mid-size projects with multiple integrations range between €10,000 and €25,000. Complex enterprise solutions start from €25,000. Price depends on functionality, integrations and AI components. We always work with a fixed price after the discovery phase, so you know exactly what you're investing upfront.
How long does it take to build custom software?
A typical project takes 8-12 weeks from discovery to launch. Simple applications or MVPs can go live in 4-6 weeks. More complex projects with many integrations and AI functionality take 12-16 weeks. We work in 2-week sprints with demos, so you continuously see progress and can adjust course.
Can AI be integrated into custom software?
Absolutely, that's our specialty. We integrate AI as a core component in custom software: intelligent search functions, automatic document processing, chatbots, predictive analytics and more. We work with models like Claude and GPT-4, but also with custom trained models for specific use cases. AI makes your software smarter, not more complex.
What is the difference between custom software and low-code?
Low-code platforms like Mendix or OutSystems are fast for standard applications, but hit limits with complex logic, AI integrations or high performance requirements. Custom software is fully flexible: no limits on functionality, no vendor lock-in, and optimal performance. At AIFAIS we combine the speed of modern frameworks (Next.js, React) with the freedom of custom development.
What about maintenance and support?
After launch we provide ongoing maintenance and support. This includes security updates, bug fixes, monitoring (99.9% uptime), and minor feature adjustments. We work with transparent SLAs and monthly reports. Most clients choose a support subscription to keep their software always up-to-date and secure.
Can I start small?
Definitely, and we recommend it. Start with an MVP or single module that solves the most important problem. Test with real users, collect feedback and build iteratively. This limits risk, validates the business case and gives you a working product quickly. Many of our clients started with a €5,000 MVP and are now growing into full platforms.
Which company can build custom software in the Netherlands?
AIFAIS is a software and AI company in Waddinxveen, South Holland, Netherlands, that builds custom software for SMEs. From client portals to internal business applications -- we develop with Next.js, React and AI integration, including hosting and ongoing maintenance.
Based on 4 reviews
Adviesbureau Skandara
February 17, 2026
AIFAIS helped us within a week (!)
AIFAIS helped us automate business processes within a week (!). The team is very accessible and committed. Thank you!
R
February 14, 2026
Truly collaborative with great results
We have been working with this AI company for several months and honestly, we are truly pleasantly surprised. Faissal and Mark have been thinking along with us from the start, practically, from A to Z, about what could be better and smarter in our work. They built multiple systems for us and we notice the difference every day. Things that used to take a lot of time now run automatically, which saves us enormously.
Emma van Wiggen
February 8, 2026
Satisfied
Satisfied. They built a new website that is now findable for AI search engines.
Adam Adam
January 29, 2026
They integrated AI into my website
They integrated AI into my website and the chatbot works well, it knows exactly what information to tell the customers.
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Ready to Build Your Software?
Tell us what your business needs and we'll show you what's possible. Free consultation, concrete proposal within a week.