Building software in Delft since 2012.
Susan and Tom Pesman started 9to5 with a single app: nummi, a game they came up with at their hockey club. Today a small team builds websites, web apps and mobile apps. More and more of that work includes AI, but far from all of it. We do this for clients and for our own products.
How we work.
We are a small team, and you notice that. You talk directly to the people who build your software, including Susan and Tom, who still write code every week.
The people who advise also build
The developer who hears your question is usually the one who solves it. There is no account manager in between.
We start with what is already there
With an existing product we first look at the code, the data and how people use it today. Only then do we talk about tools.
We run products ourselves
We maintain nummi, ParkMyBike and OmgevingsAlert ourselves. So we know what it is like when something breaks in the evening, and we set up tests and monitoring before anything goes live.
Handover is part of the job
Does your team want to carry on by itself afterwards? Then we keep the code readable and write down the important decisions.
Next to client work, we build our own products.
nummi: using data to guide product development
An online multiplayer product where retention, onboarding, engagement, acquisition, ads and subscriptions directly inform product decisions.
View the caseParkMyBike: software that has to work beyond the browser
Mobile apps, backend, dashboard, payments, BLE, IoT and physical locks come together in one production-ready system.
View the caseOmgevingsAlert: from scattered data to relevant notifications
A wide range of public and live data sources are imported, normalised and linked geographically before being turned into relevant information for the right user.
View the caseOn the Nieuwelaan in Delft.
Since December 2019 we have worked from a circular building by cepezed at Nieuwelaan 72. The whole building can be taken apart and put back together somewhere else. Our office is also home to Dolly, our life-size robot, named after Dolly Parton's song '9 to 5'. Feel free to drop by for coffee.
More about sustainable business
The team.
Developers for iOS, Android, web and backend, a UX designer and a few working students.
