Germishuys turned professional in March 2019 while still a teenager. He joined the
Sunshine Tour, where he was runner-up at the
Vodacom Origins of Golf at Stellenbosch in October, a stroke behind
Thriston Lawrence. He secured his maiden title at the inaugural Sishen Classic in his fourth season, beating
Louis de Jager in second by six strokes. In 2022 Germishuys joined the
Challenge Tour, where he was runner-up at the
Hopps Open de Provence, three strokes behind
Joel Sjöholm. He finished 20th in the season rankings to
graduate to the 2023
European Tour, where he tied for 3rd alongside
Rasmus Højgaard in the
KLM Open at
Bernardus Golf, three strokes behind winner
Pablo Larrazabal, and finished 125th in the Order of Merit. In 2024 he was runner-up at the
SDC Open before winning the
Limpopo Championship. Back on the European Tour in 2025, he finished 3rd at the
Magical Kenya Open, five strokes behind winner
Jacques Kruyswijk. Germishuys secured his third professional title at the 2025
South African PGA Championship, South Africa's second oldest professional golf tournament and one of the most prestigious on the Sunshine Tour. ==Personal life==