[2] In 2008, Langeler moved from Rohda Raalte to FC Zwolle, where he became responsible for the youth academy together with Hans van Dijkhuizen and also became a head coach of the U17 team.

At the end of 2009, FC Zwolle announced that Langeler would succeed Jan Everse, who had been dismissed in October 2009, as head coach with effect from 1 January 2010.

This led to criticism from opposing candidate for the job, Theo Vonk, who accused the club of using Langeler as a front man in order to allow Claus Boekweg and Jaap Stam, who temporarily observed the training sessions but did not have the correct diplomas, to continue their work.

The Langeler-Stam-Boekweg triumvirate came to an end in March 2012, when Langeler decided to reshape the functions of the first team and to add Gert Peter de Gunst, who had until then been coach of the U17 to the staff.

[9] In his first season as head coach in the Eredivisie, PEC Zwolle entered the winter break in 14th position, with the same number of points as VVV-Venlo and Roda JC.

[13] PSV had been looking for a successor for Jelle Goes for some time, who had resigned in September 2012, and previously saw Wiljan Vloet and Adrie Koster drop out for the position.

[15] He also wrote a weekly column on the PSV website about, among other things, current themes in the youth academy, looking ahead on the matches of the weekend.

[20] After he announced that he would leave PSV, he came to an agreement with technical manager Jelle Goes of the KNVB in February 2017 to become the permanent coach of the Netherlands U21.

[23] On 11 March 2021, Langeler signed a two-year contract to become the new head coach of PEC Zwolle, starting 1 July 2021, which marked his return to the club.

[24] He stepped down a few months after his appointment, on 16 November 2021, citing lacking perspectives to turn around the club, who were firmly bottom of the league.

[26] Starting 1 July 2022, he also served as Head of Upper Youth Football Development at FC Groningen's academy, signing a contract until 2025.