Our Story
Most development agencies give you a choice: build fast with a cheap offshore team and deal with the consequences, or pay Silicon Valley rates and watch your runway disappear before you gain traction.
We built ROIJOY Digital to break that trade-off.
We are a vetted team of senior European developers who combine clean, scalable development with genuine product consulting. That means we don’t just execute what you hand us. We challenge assumptions, prioritise the features most likely to drive early traction, and make sure every line of code we write is something you won’t need to rewrite six months later.
We’ve partnered with founders from North America to Hong Kong across B2B SaaS, Fintech, Healthtech, and Marketplace verticals. The common thread across every engagement is the same: founders who needed a technical partner they could actually trust, not just a team to hand tasks to.
That’s what we are. And that’s the only kind of work we take on.
What We Believe In
Senior talent is non-negotiable. You won’t find juniors learning on your dime here. Every developer on your project has proven startup experience and takes full ownership of their work.
Strategy comes before code. The most expensive mistake in early-stage product development is building the wrong thing. We invest time upfront to make sure what we build is what your users actually need.
Transparency is the baseline. Clear milestones, fortnightly demos, and honest reporting. No black holes, no excuses, no surprises in board meetings.
One build. No rebuilds. We write clean, well-documented, scalable code from day one. Not because it looks good in a portfolio, but because rebuilds cost founders runway they can’t afford to lose.
Meet The Founder
David Simon, Founder
David founded ROIJOY Digital with a clear conviction: startups deserve a technical partner who thinks about the business, not just the build.
With over a decade of hands-on experience across digital products, web development, and marketing systems, David combines technical depth with commercial clarity. He has worked with 100+ businesses on improving tracking, conversion, and product performance, and led his team through 95+ startup engagements spanning MVPs, mobile applications, and enterprise-grade digital products across B2B SaaS, Fintech, Healthtech, and Marketplace verticals.
He leads a vetted European engineering network built around a simple principle: product, data, and growth strategy should work as one system, not three separate conversations with three separate teams.
His approach is grounded in transparency, simplicity, and long-term partnership. No vanity metrics. No guesswork. Just scalable systems built to drive real business outcomes.