Simplify the following text for a Grade 6 native English-speaking person.
Original: Maarten Stekelenburg ( ; born 22 September 1982 in Haarlem ) is a professional Dutch football goalkeeper who currently plays for Ajax and the Netherlands national football team .
Simplified: Maarten Stekelenburg ( born 22 September 1982 ) is a Dutch football player . He plays for Ajax and Netherlands national team .