Keynote Speaker • Science Communicator • Event MC • Leadership Development Facilitator
Learners, educators, scientists, corporate teams, universities, government agencies and organisations seeking engaging science communication, leadership development and educational inspiration.
Dr Gillian Arendse is an accomplished South African science communicator, educator and keynote speaker known for his ability to make complex scientific concepts accessible, meaningful and inspiring to audiences of all ages. Born in Paarl, he completed a Ph.D in Experimental Nuclear Physics at Stellenbosch University, where he later served as a physics lecturer for a decade. His academic depth, combined with his natural talent for connecting with people, positioned him as a national leader in science advancement.
From 2008 to 2013, Dr Arendse managed the Community Interaction and Training Division at iThemba Labs, overseeing nationwide initiatives designed to promote science awareness among learners, educators and the general public. His work included developing communication strategies, delivering training, and driving programmes that strengthened South Africa’s science engagement ecosystem.
In 2014, he became Head of the Centre for Mentor, Tutor and Leadership Development at Stellenbosch University, where he continues to empower students through mentorship, academic support structures and leadership development frameworks.
Born in Paarl, Dr Gillian Arendse attended Nederburg Primary School and Paulus Joubert SS. He studied at the University of Stellenbosch from 1989 – 1996, with a Ph.D (Experimental Nuclear Physics).
From 1997 to 2007, he was the lecturer in the Department of Physics at the University Stellenbosch where he went on to become the Manager of the Community Interaction and Training Division at iThemba Labs from 2008 to 2013.
His portfolio at iThemba labs consisted of Science Advancement – overseeing the activities aimed at promoting awareness and appreciation of science amongst learners, teachers, students and the general public as well as Communication – developing material to create a brand awareness (both internally and externally).
In 2014, Dr Gillian Arendse became the Head of the Centre for Mentor, Tutor and Leadership Development at Stellenbosch University.
Dr Gillian Arendse has spoken at the following events:
“Thank you very much indeed for interacting with the final year bursary students and graduates of this bursary program.
You connect so well with young people, but you don’t just entertain them – you also challenge them and ask thought-provoking questions, which should engage their minds even for some time after the Retreat.
Thanks for supporting us in our endeavour to prepare these science and engineering students for the workplace and to start building their future careers.” The National Science & Technology Forum
Thank you very much, once AGAIN, for your brilliant MC’ing at the NSTF-Billiton Awards Gala Dinner! You always keep it fresh and new by improvising. We really appreciate the manner in which you not only direct the program efficiently but provide entertainment which our guests delight in and have come to expect at this event!” Jansie Niehaus, Executive Director, National Science and Technology Forum
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This short 15-second video captures a lively moment from one of Dr Gillian Arendse’s WOW programme sessions, a community-based science engagement platform designed to spark curiosity and excitement among young people. In the clip, Dr Arendse demonstrates his signature delivery style: energetic, humorous and deeply engaging. Speaking partly in Afrikaans, he interacts directly with learners, prompting laughter and enthusiasm while setting the tone for an accessible and enjoyable science experience.
Though brief, the clip showcases his ability to create instant rapport, shift energy in the room and make science feel playful and relevant. His combination of expressive movement, warm humour and inclusive language reflects why his sessions remain highly impactful across schools and community groups. This moment underscores the effectiveness of his approach—transforming educational content into high-impact, memorable learning experiences that leave audiences inspired and eager for more.
Speaker fees can vary depending on factors such as expertise, demand, and event specifics. While some speakers may charge a flat fee for their services, others may have hourly rates. It’s best to discuss fee structures directly with the speaker or their representative to understand the pricing model.
Virtual speaking appearances can indeed offer cost savings compared to in-person events. Virtual speaking rates are often 10-50% cheaper than in-person rates due to factors such as reduced travel expenses and logistics. This makes virtual events a cost-effective alternative for organizations looking to book speakers within a budget.
Keynote speeches typically range from 30 to 90 minutes, with the duration determined by the speaker’s expertise, the event’s agenda, and audience preferences. Keynote speeches often include a combination of inspirational stories, practical insights, and actionable advice tailored to the event’s theme or objectives.
The scale of the event and audience size can indeed impact a speaker’s fee. Larger events with a broader reach or higher attendance may command higher fees due to increased exposure and demand. Conversely, smaller events or niche audiences may offer opportunities for more flexible pricing arrangements.
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