 In Dunedin her tutors included German-trained jeweller Georg Beer and Swiss-trained jeweller Kobi Bosshard.After completing her studies, Walker moved to Auckland, where along with Areta Wilkinson, Anna Wallis and Helen O'Connor she established the jewellery workshop Workshop 6.In 1995 Walker moved to Germany, and from 1995 to 2001 studied under jeweller Otto Kunzli at the 'Klasse Kunzli' at the Akademie der Bildenden Künste München in Munich.