Our Team


Karolina van der Linden

Managing Director, Marketing and Sales

+61 409 101 197


Karolina brings her knowledge and experience in marketing, branding and project management to Bonartis Group, in addition to her good taste in fashion and all things luxury.


Born in Poland, raised in Canada and having lived in Denmark for six years prior to her move to Australia, Karolina has gathered over a decade of international professional experience, and exposure to diverse cultures.


With degrees in economics and political science from Montreal’s Concordia University and a graduate management degree from the John Molson School of Business, Karolina’s career started in the corporate world of multimedia, managing educational projects for top pharmaceutical companies in collaboration with leading North American universities. An offer to work at the European Environment Agency propelled a move to Copenhagen, Denmark, where Karolina spent six years working as a project manager in communication, brand management, and digital marketing.  In this role, she oversaw projects such as building an educational website available in 24 languages, developing brand building tools, social media strategies, building a professional network and managing of digital media channels. Working alongside environmental leaders has given her a good understanding of global environmental issues and enthusiasm for nature and sustainable development.


Her passion for brand building was expressed, among others, in a hospitality business when she purchased a 30m, two-story boat, turned it into a popular seaside hostel, and then sold it as a successful brand.


Karolina grew up in Montreal, Canada hence her bilingual French language skills and love of good food. Karolina and her husband moved to the Adelaide Hills in 2012 and have since grown their family by three dirt-loving boys. When not busy keeping up with them, Karolina enjoys gardening, reading up on world politics, planning long-term holidays and catching up with friends and family who are spread over the entire globe.

Kasia close-up

Katarzyna Sektas-Bilusich

Managing Director, Legal Counsel and Business Development

Australia +61 405 119 986 | Poland + 48 790 777 823


With degrees in law and business, Kasia’s superior negotiating skills are matched only by her charm. She is an entrepreneur by nature, but started out with a law degree from the University of Warsaw and the American Law University of Florida, which she followed up by an Executive Master of Business Administration (EMBA) from the prestigious ESADE Business School in Spain.


Kasia started her career as a corporate banking lawyer for international banks where she had the opportunity to observe and work with successful and inspiring entrepreneurs. With the vision of merging her expertise in law and business, Kasia founded her own law firm, Legal Care, in the heart of Warsaw. Her experience acquired while working for banks in the area of financing major loans for large multinationals has allowed her to switch sides and work directly with large corporations on banking transactions.


As of 2012, Kasia heads the Interbank Group within the structure of the Polish Bank Association, an association which, among other things, improves the efficiency of banks by supplying them with standard loan agreements, good practices and other tools used in restructuring transactions and loans.


Kasia leads a busy life, but always leaves time for her passion to travel. Her love of sailing has taken her around the world. Starting out with the smooth waters of the glorious Polish lake district, her hobby took her to the Mediterranean, the Indian Ocean off the coast of Thailand, the open seas of the Caribbean, the Canary Islands, with the pinnacle being her trip around Cape Horn, a feat that is still considered the Everest of yachting excursions in the sailing world.


When not traveling, Kasia slows down to practice her faith as well as spend time with her husband Daniel and their families. In summer, she plays tennis and in winter, she skis. Kasia also indulges in hobbies that include healthy, raw and natural eating as well as taking her Thermomix to the limits by exploring new vegetarian recipes.