After impressing for the England Lions in the West Indies in the early part of 2011, he was called up to the senior team as a replacement for Ajmal Shahzad for the knock out stages of the 2011 Cricket World Cup[3] and made his Twenty20 and ODI debuts later that year against Sri Lanka.

Derek Pringle described him in The Daily Telegraph as a fast bowler who is capable of obtaining conventional and reverse swing, as well as of deceiving the batsman by bowling a variety of slower balls.

"[8] His consistency and regular wicket-taking for Surrey was rewarded with a place on the 2011 England Lions tour to the West Indies, before a late call-up to England's 2011 World Cup squad made him the first Surrey youth academy graduate to secure recognition at this level.

His 2011 season was capped with a Man of the Match performance in the CB40 Final, where his 4/30 helped lift Surrey to victory.

[9] It was announced in July 2021 that Dernbach was to leave Surrey at the end of the season due to a lack of playing time.

He was called up to the senior team as a replacement for Ajmal Shahzad for the knock out stages of the 2011 Cricket World Cup[11] but was not picked to play.

[17] In September 2021, he was named in Italy's squad for the 2021 ICC Men's T20 World Cup Europe Qualifier.