Jonker is a multi-disciplinary artist who works close to nature from his home studio in the Overberg village of Baardskeerdersbos. He is also a pioneer of artisan breadmaking in South Africa and offers monthly workshops, both in baking and outdoor painting.
Jonker has been painting direct from the landscape for almost a decade, especially the South Western Cape, which he came to love while growing up in the Klein Karoo. Today Niel works prolifically both as painter and figurative sculptor. He has been commissioned to create public monument work and is collected locally and internationally.