
Hi! Ik ben Xander
Ik ben een 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 met meer dan 25 jaar ervaring in het bouwen van snelle, schaalbare en gebruiksvriendelijke webapplicaties.
Mijn kernexpertise ligt in 𝐑𝐞𝐚𝐜𝐭, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 en 𝐍𝐞𝐱𝐭.𝐣𝐬. Ik richt me op het creëren van hoogwaardige, toegankelijke interfaces met uitstekende prestaties en een schone architectuur.
Met een solide achtergrond bij 𝐈𝐁𝐌 en diverse projecten breng ik ook ervaring mee in Java, Kotlin en GoLang. Dit full-stack perspectief stelt me in staat om effectief samen te werken met verschillende teams en robuustere oplossingen te leveren.
Ik heb succesvol gewerkt voor startups en ondernemingen in de marketing-, finance-, sales- en retailsector — waarbij ik consequent pragmatische, hoogwaardige resultaten lever.
Momenteel sta ik open voor nieuwe kansen waarbij ik kan bijdragen aan ambitieuze producten in samenwerking met sterke engineering teams.
Laten we connecten als je iets spannends aan het bouwen bent.
Bol.
Jul 2025 - Mrt 2026
• React
• Typescript
• react-router
• Storybook
• vitest
• Kotlin
• GraphQL
Frontend Developer
Bij bol.com zijn we gemigreerd van een strak gekoppelde legacy frontend/backend naar een modulaire NX-gebaseerde React frontend met TypeScript, React Router, Vitest en Storybook. Ons team is verantwoordelijk voor het Account-domein, inclusief bestellingen, retouren en klantinstellingen. Daarnaast heb ik verspreide Java/Kotlin businesslogica samengebracht in één service, Aloha, die verantwoordelijk is voor de orderstatus.
The Happy Doctor
Feb 2025 - Mei 2025
• Design
• UX
• Wix Studio
• CSS
• Javascript
• SEO
• Marketing
Frontend Developer
Using Wix Studio, developed and designed a dynamic, user-friendly website, https://www.thehappydoctor.nl, leveraging Wix and its robust CMS to deliver a responsive, visually appealing design with seamless database integration and optimized SEO functionality. Handling marketing to grow online reach and interaction.
Gain.pro
Mei 2023 - Aug 2024
• React
• TypeScript
• Go
• SQL
• MUI
• Google Cloud
Frontend Developer
In my second term at Gain.pro, I focused on maintaining and optimising the APP and CMS while developing key data integrations using GoLang. I built import pipelines to integrate data from DealRoom into Gain.pro and implemented export solutions to seamlessly transfer Gain.pro insights into DealCloud customer environments.
Action
Okt 2021 - Jan 2023
• React
• Next.js
• Vercel
• Apollo GraphQL
• Algolia
• Tailwind CSS
Frontend Developer
At Action.com, we upgraded the tech stack by migrating from a Vue.js application with an EPI Server CMS hosted on Microsoft Azure to a React-based app leveraging Apollo Federation for communication. The new setup runs on Vercel while retaining the existing CMS and integrating Algolia for enhanced search and sorting capabilities.
Rabobank
Jan 2021 - Aug 2021
• React
• D3.js
• AWS
• Tailwind CSS
• Serverless
• DynamoDB
• Storybook
Frontend Developer
I developed www.raboelectric.nl for Rabobank, a platform promoting electric vans for small to medium-sized businesses. The website features an intuitive subsidy and financial lease calculator, helping businesses make informed decisions. Built with React and a serverless architecture powered by DynamoDB, it ensures scalability, performance, and seamless user experience.
NTR
Okt 2020 - Dec 2020
• React
• Next.js
• JSON
• css-modules
• framer motion
• Storybook
Senior Frontend Developer
For NTR, we developed NPOkennis.nl, a dynamic platform featuring videos, stories, series, polls, and quizzes to engage and educate users. Designed for seamless content delivery, the website enhances storytelling and interactivity.
Gain.pro
Apr 2019 - Sep 2020
• React
• Redux
• RxJS
• D3.js
• JSON-RPC
• css-modules
• Storybook
Lead Frontend Developer
At Gain.pro, a startup providing deep insights into the private equity market, I was part of a small, agile team of four, building their new website and CMS from the ground up. We leveraged React, Redux, and D3.js to create a high-performance, data-driven platform for financial professionals.Tech stack: React,
Ahold
Okt 2016 - Mrt 2019
• React
• Redux
• RxJS
• Next.js
• PWA
• JavaScript
• Docker
• Kubernetes
Senior Frontend Developer
Contributed to the development of AppieToday.nl, Ahold’s video platform, and created various promotions and widgets for AH.nl. My last project was the redesign of Allerhande.nl, enhancing the user experience for one of the Netherlands' most popular recipe platforms.
Info.nl
Apr 2016 - Sep 2016
• JavaScript
• jQuery
• Sass
• Java
• Srping
• Mockitoy
• Rest
• MVN
Frontend Developer
At Info.nl, I worked on the Greenwheels project, enhancing their REST API to support a new mobile app that seamlessly integrates multiple applications into one. This upgrade improved performance, scalability, and user experience for car-sharing services.
Ahold
Sep 2012 - Mrt 2016
• JavaScript
• Backbone
• jQuery
• Sass
• HTML5
• NPM
• Grunt
• Bower
Lead Frontend Developer
As Lead Developer at Ahold, I managed a team of 10+ front-end developers across multiple teams, driving the development of key e-commerce platforms, including AH.nl, AH.be, and Etos.nl. Focused on scalability, performance, and UX, we delivered high-impact digital experiences for millions of users.
ING
Okt 2011 - Jul 2012
• Java
• Mockito
• SQL
• JSP
• JSTL
• JavaScript
• CSS
• Jfreechart
Senior Java Developer
I created a new Web service for their exiting Vortex Credit Risk system and extended the Risk Rater Web Application with multiple screens using Jfreechart.
Mirabeau
Dec 2010 - Mei 2011
• Java
• JavaScript
• HTML5
• Apache Camel
• jQuery
• Spring
• Hibernate
Senior Java Developer
At Mirabeau I helped build the vakgilde.nl website from scratch. Building multiple use cases including setup of the database and services to the contract and vacature modules.
Quince
Mei 2010 - Jul 2010
• JavaScript
• jQuery
• jQuery UI
• HTML
• CSS
• Grails
• Groovy
Frontend Developer
I was asked to fix 2 major problems with the Vamos KPN mobile sales Web application. First was the speed of the website, second was the layout of the website.
Fortis
Jul 2009 - Nov 2009
• Java
• J2EE
• JSP
• Spring
• SQL
• CSS
• JavaScript
• SQL
Senior Java Developer
Solon project at Fortis was the migration of old and very old code of multiple web application to the newly chosen Windows environment.
Net Effect
Sep 2008 - Feb 2009
• Java
• JSP
• JSTL
• SQL
• CSS
• JavaScript
• jQuery
• Spring
• Jfreechart


Frontend Developer
European Directories wanted a new sales tool for their employees. This included building multiple web portlets and export functionality of different report to PDF.


























