Practising in optics with a career spanning three decades and working with optometrists, opticians, optical dispensers and students as well as industry, Grant is at the forefront of ophthalmic optics in Australia and internationally after being named the 2022 Silmo IOA International Optician of the Year. He is the co-founder and director of the Academy of Advanced Ophthalmic Optics and co-owns a private independent optometry practice Hannaford Eyewear which was awarded the 2022 Australian Small Business Champion.

Grant is a physicist, lens designer and qualified optical dispenser. He graduated with a Bachelor of Science degree with a major in physics and pure mathematics from the University of New England. Grant holds a qualification in spectacle lens design with honours from the UK under the tutelage of Professor Mo Jalie and is the first and currently the only qualified spectacle lens designer in Australia. He has an interest in research and photonics.

Grant is a Fellow of the Association of British Dispensing Opticians and the Australasian Dispensing Opticians Association. He is also a senior lecturer at the School of Optometry and Vision Science UNSW. He is the past Chairman of the NSW Optical Dispensers Education Trust and the past Vice President of ADOA (NSW). Grant also consults for various international education projects providing resources for best practice dispensing models. He has been awarded as a Rotary Paul Harris Fellow and is formally recognised by the Australian government for his charitable works in Mongolia and Nepal.

Grant is currently a doctoral candidate at the School of Life and Health Sciences at Aston University, Birmingham England researching emmetopisation and ocular biometric development in children.