About graimatter
I’m Jolyon Oattes. graimatter brings together my interests in the human mind and technology. I build apps inspired by situations I experience myself or see around me, with the hope that software can make a difference in everyday life.
Since February 2026, I have worked full-time through the Buurtteams as project lead for Amsterdam’s Mental Health Networks. My work focuses on innovation in support and appropriate care for Amsterdam residents experiencing mental health difficulties.
My background is in clinical neuropsychology. I started as a support worker in mental health care and later worked as a team manager and mental health care manager. Alongside my job, I develop the graimatter apps.
Working together
Before working together, I discuss what is feasible alongside my job and how much time I can set aside.
Focus
In my work in Amsterdam, I look at how people can find support that suits their situation. I believe they should have a say in those decisions. That support might come from professional care, loved ones or people in the neighbourhood.
With my apps, I want to support people in what they want to do or change: getting a clearer overview, feeling ready to take a next step, or feeling supported when things are difficult. Sometimes for themselves, sometimes for their child or family.
Background
Education
I have an MSc in Clinical Neuropsychology from VU Amsterdam and gained experience in neuropsychological assessment, including at VUmc.
I have temporarily paused my MBA at Nyenrode to make room for my family, my project lead role and graimatter.