Selected projects¹⁵

From Nairobi to West Bengal: work across data, product and design. Drag the globe, pick a project.

Nairobi, Kenya · 2024

Sevi: explainable credit for Kenyan retailers

ML credit decisions, the governance around them, and the full app design.
Sevi is a CBK-regulated fintech that finances stock purchases for retailers across Kenya. I built its AI credit verification system from zero: the ML pipeline, Kubernetes infrastructure, API and decision dashboard. I also designed the full customer app.

Around the models sits a governance layer of explainability, bias monitoring and audit trails, so credit decisions in thin-data markets are fast, fair and defensible. Today, as Chief Data Officer, I lead the data department and own how data becomes product and credit decisions.
- Machine learning
- Credit risk
- Explainable AI
- Product design
Visit sevi.io
Kurdistan Region of Iraq · 2026

Something new

A new project in the making.
A new project is taking shape in the Kurdistan Region of Iraq. More soon.
- In the making
Netherlands · 2019

Make it WorkPress

Fast, sustainable WordPress hosting for impact-driven organisations, plus open-source tooling.
Make it WorkPress provides fast, secure and sustainable WordPress hosting and development for impact-driven organisations: NGOs, social enterprises and mission-driven companies that need technology that simply works.

It is also the home of my open-source work. WP Components (a library of 30+ building blocks for themes and plugins), WP Custom Fields (an options and meta-field framework) and a multi-purpose theme were developed between 2015 and 2017 and became part of Make it WorkPress when it launched in 2019. Together they power the client sites we build and host.
- Hosting
- Open source
- PHP
- Linux
Visit makeitworkpress.com
Netherlands · 2020

CreativeSolvers method database

75 innovation, strategy and design methods, filterable by the problem you're facing.
CreativeSolvers is my innovation and strategy collective for mission-driven organisations. Its most-used asset is a curated database of 75 methods, tools and techniques we apply in our own practice: from the Opportunity Canvas and Fishbone Diagram to 5 Whys and prioritisation matrices.

Each method is tagged by problem space (understand customers, generate ideas, make decisions, design products and services) so teams can find the right tool for the question in front of them, with templates to get started straight away.
- Design thinking
- Strategy
- Knowledge base
Visit creativesolvers.com
Laxmikantapur, West Bengal · 2013

Community Cooling Center for rural India

A product-service system that lets small vegetable farmers store their harvest cold.
Small vegetable farmers in West Bengal lose much of their harvest because they must sell it the day it's picked, often at the lowest price. During months of field research and co-creation with farmers, our five-person TU Delft team designed the Community Cooling Center (3C) for Enviu and ONergy.

The 3C is a locally built, insulated brick shed, cooled by a standard air conditioner with a CoolBot controller that takes it down to 3°C, at a fraction of the cost of conventional refrigeration. A local entrepreneur owns and runs it on a bank loan and farmers pay per day of storage, so they can wait for better prices, avoid overnight spoilage and reach distant markets. We delivered the business model and a 15-month pilot plan for four centres at three locations, including a solar hybrid.
- Base of the pyramid
- Field research
- Business modelling
Atlanta, United States · 2019

Strategy toolkit for organisational change

A serious game that turned a global strategy paper into action.
OM, a global NGO, had a bold new strategy on paper but struggled to get it adopted across the organisation. After a research phase into how the organisation actually works, we designed a toolkit that looks and plays like a game. It turns the strategy into a step-by-step, playful process that moves teams from understanding to action. It launched at a global leaders' conference and is used by OM leaders worldwide. Built with Jan-Willem Bijzet under CreativeSolvers.
- Strategy design
- Serious gaming
- Research
Germany · 2020

TeenStreet: from event to online movement

Moving OM's youth event online and turning it into a movement.
When the pandemic forced TeenStreet, OM's international youth event, online, we used the moment to turn it into a year-round movement. I led a month of organisation-wide online brainstorms, selected the community platform, designed and built the new website (with events and a webshop) and set up its cloud hosting. Together with a social campaign, it launched the new TeenStreet brand. Built with Jan-Willem Bijzet under CreativeSolvers.
- Digital transformation
- UX design
- WordPress
Redding, California · 2016

His Story

UX design for a platform sharing real-time testimonies of what God has done.
At a business conference in California I met a team of developers building an app where people share testimonies, stories of what God has done in their lives, as they happen in real time. Over coffee and brainstorms we shaped the concept together. Back in the Netherlands I designed the application's screens, which became a short, long-distance collaboration.
- UX design
- Product concept
Netherlands · 2017

Shoptiment: AI product sentiment

Sentiment analysis across social media, rolled up into one product verdict.
My first venture into applied machine learning. Shoptiment collected what people said about products on Twitter and YouTube, scored it with sentiment analysis (negative, neutral, positive) and combined it with user reviews into one product verdict. It ran in Dutch, German and international editions.
- Sentiment analysis
- NLP
- Data pipelines
Netherlands · 2018

Marketplace for circular building materials

A marketplace giving reclaimed building materials a second life.
An engineering firm wanted a marketplace where reclaimed building materials could find a second life. I ran the strategy sessions, prototyped and tested the experience, and built the platform: ElasticSearch for fast, faceted search across materials and a REST API so external systems could publish stock automatically. An online marketing strategy completed the launch. The platform was later developed further and relaunched as Insert.
- Product design
- ElasticSearch
- REST API
Netherlands · 2018

Lemonade: a big-data workshop game

A tablet game that teaches teams to act on data.
A tablet game that teaches business teams to act on data. Teams run a lemonade stand and set prices and stock from weather forecasts and expected demand, then compare results live. I built the digital half: a facilitator console to run games, team screens on iPads and a shared leaderboard for the room. Three audiences, one Vue.js app.
- Data literacy
- Vue.js
- Game design
Netherlands · 2020

Escape-room workshop application

A browser app disguised as a Windows desktop for an escape-room workshop.
For an innovation workshop, I built a browser application that convincingly imitates a Windows desktop, with a working browser, mail client and "hacker tools", to guide teams through an escape-room scenario. A facilitator console registers teams and starts games, with Firebase keeping everything in sync in real time.
- Vue.js
- Firebase
- Interaction design
Netherlands · 2018

ICED19 conference identity & website

Identity and website for the International Conference on Engineering Design.
For the International Conference on Engineering Design 2019, hosted by TU Delft, I translated the organisers' values into a brand triangle and several identity routes, then designed and built the conference website around the chosen identity. A content workshop got the team aligned and the site live on time.
- Branding
- UX design
- WordPress
Netherlands · 2018

Schoolbegroting: designing for dense data

Research-based redesign of a data-dense budgeting app for schools.
A redesign of a budgeting application for schools, full of tables and editable figures. I audited the existing interface, grounded the table design in usability research and iterated through clickable prototypes that the client tested and commented on directly.
- UX design
- Data-heavy interfaces
- Prototyping
Kolkata, India · 2016

Volunteer web project in India

One week on location to redesign a development trust's website.
In one week on location in India, I assessed the trust's content, proposed a new structure and designed and built a new website. It was ultimately never launched, and the lessons I learned are in this article.
- Volunteering
- Information architecture
- Cross-cultural

Sevi: explainable credit for Kenyan retailers

Something new

Make it WorkPress

CreativeSolvers method database

Community Cooling Center for rural India

Strategy toolkit for organisational change

TeenStreet: from event to online movement

His Story

Shoptiment: AI product sentiment

Marketplace for circular building materials

Lemonade: a big-data workshop game

Escape-room workshop application

ICED19 conference identity & website

Schoolbegroting: designing for dense data

Volunteer web project in India