Amsterdam, North Holland, Netherlands
Hi, I’m Joep, a Full-Stack Growth Engineer helping platforms, SaaS and e-commerce turn visitors into loyal customers. I ship engineering and growth across the entire funnel: programmatic SEO and landing pages to acquire, rapid experimentation and custom sales tooling to convert, and predictive LTV models, growth loops, and hyper-personalized CRM to retain and grow customer value. Since I write code myself, I (re)invent platforms and implement tools natively instead of stitching together third-party services. That means less overhead, faster iteration, and more time to find and maximize what actually works. If you’re looking to get more out of your business and customer base, let’s talk.
At Landed, I developed the full service investment platform and drove the early growth phase achieving €10M+ in raised capital. The platform lets people invest in real estate from just €100 through a fully managed model: sourcing, renovating, and managing the properties on behalf of investors, who earn around 9% annual returns backed by real estate. Today it supports 4,500+ investors through its web and native mobile app, scoring a 4.8 average across 280+ Trustpilot reviews.
My role centered around acquisition growth through new marketing initiatives, spanning offline marketing, partnerships, and the marketing automation tooling that made those channels compound. Rather than throwing spend at channels, I built systems that made each one measurably more efficient or scalable. A few of the marketing tools I shipped during my tenure: In-house targeting engine -> Cut 30%+ off the cost of every national and hyperlocal mailbox campaign by optimizing who we reached before a single campaign went out. Barter-influencer platform -> Built a platform for the full partnership lifecycle (acquisition, activation, retention) through integrated CRM workflows, automated reporting, and built-in campaign and promotion tooling. Deeplink generator -> Provided marketing and retail media a self-serve way to create links straight into in-app categories and campaigns, removing annoying clutter from their workflow.
Underdog was a webshop I set up during my studies, selling premium woven boxer shorts through a flexible membership model. I owned growth and retention, and built the front- and back-end applications powering both the customer experience and the customer care team's daily workflows.
As part of the management team, I owned the online channels for Bavaria Bierkoerier. I optimized the webshop, streamlined the ordering process, and introduced several new products, driving 40%+ YoY revenue growth.
As a freelance growth marketer, I helped brands acquire and retain customers, backed by the ability to produce my own video content and build the platforms as developer. That meant I ran campaigns end to end, from concept and creative through to the code that shipped them, without waiting on a production house or a dev team.