Nick van Iersel - Full-stack Developer & IT Consultant at VanIersel Development

Nick van Iersel is a Dutch full-stack developer and IT consultant based in Waalwijk, the Netherlands. Through VanIersel Development he designs, builds and ships modern websites, SaaS platforms and web applications.

From idea to digital reality

Full-stack development, IT consulting and digital solutions that make an impact

Full-stack development services

VanIersel Development is the one-person studio of Nick van Iersel, based in Waalwijk, the Netherlands. We design and build modern websites, complex full-stack web applications, multi-tenant SaaS platforms, REST and GraphQL APIs, React Native mobile apps and cloud-native DevOps infrastructure - primarily in Next.js, TypeScript and React.

Who is Nick van Iersel?

Nick van Iersel is a Dutch full-stack developer and IT consultant with over 6 years of experience shipping production software. He started as a developer in 2019, moved into full-stack engineering in 2020, went independent in 2022, launched the Salonnare SaaS platform in 2024 and founded VanIersel Development in 2025.

Featured product: Salonnare

Salonnare is an all-in-one SaaS platform for beauty salons, hairdressers, nail studios and barber shops. It combines online appointment management, a Point of Sale (POS) system with iDEAL, inventory management, client CRM, reporting, loyalty programs and automated reminders in a single, mobile-friendly application - also known as salon software, hair studio software or a salon agenda system.

Which services does VanIersel Development offer?

VanIersel Development offers custom software development (maatwerk software), websites and landing pages, full-stack web applications, multi-tenant SaaS platforms, REST and GraphQL API development, Stripe integrations, React Native mobile apps, Docker and CI/CD deployments, architecture reviews and technical advisory. Typical engagements range from a landing page in one week to a complete SaaS platform built over several months.

How does a project start?

Every engagement begins with a free 20–30 minute intro call to discuss goals, technical requirements and timeline. Within three business days VanIersel Development delivers a fixed-price quote with scope, tech stack, milestones and deliverables. Only once the quote is accepted does the build start - with weekly preview links, iteration rounds and a final delivery including documentation, training and a 30-day bug-fix warranty.

Service area: Waalwijk, Brabant and the Netherlands

Based in Waalwijk (Noord-Brabant), Nick van Iersel works remote-first with clients across the Netherlands - including Tilburg, 's-Hertogenbosch, Breda, Eindhoven, Rotterdam, Utrecht and Amsterdam - and across Belgium and the EU. Available as a freelance full-stack developer, ZZP software engineer or IT consultant, either hourly or on a fixed-price project basis.

Frequently asked questions

What does VanIersel Development do?: VanIersel Development is the one-person software studio of Nick van Iersel, based in Waalwijk, the Netherlands. It builds modern websites, full-stack web applications, SaaS platforms and mobile apps, and provides IT consulting for companies across the Netherlands, Belgium and the EU.
Which technologies does Nick van Iersel specialize in?: Nick specializes in Next.js, TypeScript, React, Tailwind CSS, Node.js and PostgreSQL for web and SaaS development, and React Native with Expo for mobile apps. Infrastructure runs on Docker with CI/CD pipelines.
Is VanIersel Development available for freelance projects?: Yes. VanIersel Development takes on freelance and consulting projects - from landing pages and custom web applications to full SaaS builds, technical advisory and architecture reviews.
How much does a project cost?: A landing page starts from €250. A full web application or SaaS MVP typically runs between €15,000 and €60,000, depending on scope, integrations and iteration rounds. Every project gets a fixed-price quote within three business days - no hourly billing surprises.
How long does a typical project take?: Landing pages ship in 1–2 weeks. A full web application or SaaS MVP typically takes 6–12 weeks end-to-end, including design iterations, integrations, testing and launch preparation. Weekly preview links keep you in the loop throughout.
Does VanIersel Development work with existing codebases?: Yes. Beyond greenfield builds, we also take on architecture reviews, refactoring, performance audits and extending existing Next.js, React and Node.js codebases. Code quality, test coverage and security are evaluated before proposing changes.
Who owns the code and intellectual property?: On full payment, the exclusive rights to all project-specific code are transferred to you as the client. Generic components, libraries and frameworks built by VanIersel Development remain reusable across projects, and third-party open-source components stay under their original licenses.

Main pages

Specialized and local pages

All services

Website & Landing Page Development - Modern websites and landing pages that convert
Full-Stack Web Applications - Complex web applications from concept to production
SaaS Development - Multi-tenant SaaS platforms with subscription billing
API Development & Integrations - REST, GraphQL and third-party integrations
Mobile App Development - Cross-platform mobile apps with React Native and Expo
IT Consulting & Advisory - Technical advisory and architecture reviews
DevOps & Cloud Infrastructure - CI/CD, Docker, monitoring and cloud hosting

Portfolio case studies

Latest blog posts

The first salons are signing up for Salonnare - what I learned from launch to first customers - Salonnare is live and the first sign-ups are coming in. An honest account of what happens after you hit 'deploy': the bugs your tests didn't find, onboarding friction, per-tenant infrastructure, and why 'live' doesn't mean 'done'.
Nginx or Next.js: where do your security headers belong? - A practical guide to where security headers fit in a Next.js production stack - what you let Cloudflare handle, what nginx does, and what Next.js owns, based on a recent migration.
Next.js i18n with next-intl: path prefix, hreflang and canonical without bugs - A production guide for multilingual Next.js sites with next-intl - path prefix routing, hreflang tags, canonical URLs and the redirect status codes that make or break your SEO.
From Knex to Drizzle ORM: what nobody tells you about the migration - An honest retrospective on migrating a production multi-tenant SaaS from Knex query builder to Drizzle ORM - including the sharp edges of TypeScript, ESM and the runtime decisions you'll have to make along the way.
Why Next.js is my default stack in 2026 - A sober take on why Next.js 16 with TypeScript and Tailwind is my default for websites, apps and SaaS - and when it's the wrong choice.
Stripe Connect or Mollie Connect? Platform payouts for Dutch SaaS - An honest comparison between Stripe Connect and Mollie Connect for building a Dutch SaaS where your customers receive payments themselves - fees, OAuth flow, iDEAL support and what you actually notice in production.
Multi-tenant SaaS: 7 pitfalls you only learn in production - Seven concrete mistakes I've made or watched happen building Salonnare - multi-tenant SaaS is hard, and you'd rather not learn these the way I did.
MariaDB on a 4GB VPS: what breaks and what actually works - What I learned from running a production multi-tenant MariaDB on a 4GB VPS - Docker memory limits, connection pool tuning, idempotent migrations and the settings that decide between running and swapping.
Why I only take fixed-price freelance projects - Hourly billing looks flexible but is usually more expensive for both sides. Here's why VanIersel Development works fixed-price by default - and the exceptions.

Other language version

Nederlandse versie

Frequently asked questions

What clients ask before starting a project.

What does VanIersel Development do?

VanIersel Development is the one-person software studio of Nick van Iersel, based in Waalwijk, the Netherlands. It builds modern websites, full-stack web applications, SaaS platforms and mobile apps, and provides IT consulting for companies across the Netherlands, Belgium and the EU.

Which technologies does Nick van Iersel specialize in?

Nick specializes in Next.js, TypeScript, React, Tailwind CSS, Node.js and PostgreSQL for web and SaaS development, and React Native with Expo for mobile apps. Infrastructure runs on Docker with CI/CD pipelines.

Is VanIersel Development available for freelance projects?

Yes. VanIersel Development takes on freelance and consulting projects - from landing pages and custom web applications to full SaaS builds, technical advisory and architecture reviews.

How much does a project cost?

A landing page starts from €250. A full web application or SaaS MVP typically runs between €15,000 and €60,000, depending on scope, integrations and iteration rounds. Every project gets a fixed-price quote within three business days - no hourly billing surprises.

How long does a typical project take?

Landing pages ship in 1–2 weeks. A full web application or SaaS MVP typically takes 6–12 weeks end-to-end, including design iterations, integrations, testing and launch preparation. Weekly preview links keep you in the loop throughout.

Does VanIersel Development work with existing codebases?

Yes. Beyond greenfield builds, we also take on architecture reviews, refactoring, performance audits and extending existing Next.js, React and Node.js codebases. Code quality, test coverage and security are evaluated before proposing changes.

Who owns the code and intellectual property?

On full payment, the exclusive rights to all project-specific code are transferred to you as the client. Generic components, libraries and frameworks built by VanIersel Development remain reusable across projects, and third-party open-source components stay under their original licenses.