He is on the books of SKU Ertl Glas Amstetten and wears shirt number 20. His main role on the pitch is Forward. His estimated market valuation currently stands at 125K €.

During the Austrian 2.Liga 2025-2026 campaign, Martin Grubhofer made 18 appearances, scoring 0 goals and adding 1 assists. He averaged 0 goals per match from 0 shots, with 0 on target.