[6] In 2023 Nijman returned to the international darts circuit and competed in the 2023 PDC Development Tour series, winning three titles.

[10] Nijman reached the semi-finals at the 2023 PDC World Youth Championship, losing there to Gian van Veen.

At sixth European Tour event of the year, the 2024 Baltic Sea Darts Open in May, he achieved a shock 6–3 victory over Luke Littler,[13] before losing to Michael van Gerwen 6–2 in the second round.

Nijman topped the 2024 PDC Development Tour series Order of Merit, which qualified him for the 2024 Grand Slam of Darts.

[15][16] On 1 October, Nijman won his first senior PDC title at Players Championship 24, defeating Stephen Bunting 8–5 in the final.