As an amateur, Helligkilde won the 2015 Turkish Amateur Open Championship and represented Denmark at the
2016 Eisenhower Trophy and the
2017 European Amateur Team Championship. Helligkilde turned professional in late 2017 and joined the
2018 Nordic Golf League (NGL), where he recorded 10 top-10 finishes and secured his maiden professional title at the Ekerum Öland Masters in September. He finished fifth on the NGL Ranking to earn a
Challenge Tour card for 2019. With limited success on the
2019 Challenge Tour, he found himself back on the 2020 NGL where he won the Lumine Hills Open in Spain in February. He finished secondon the NGL Ranking and again earned a Challenge Tour card for 2021. Helligkilde found success on the
2021 Challenge Tour and won two tournaments in quick succession, the
Vierumäki Finnish Challenge and the
Swiss Challenge. He climbed into third place on the Challenge Tour Ranking following his victory at the Swiss Challenge in October, with three tournaments left of the season. ==Amateur wins==