Born in Swedru Ghana N'Tiamoah moved to France with his family while he was still at a young age and since then he also holds a French passport.
[3] N'Tiamoah stayed in town but moved onto Concordia Basel, who at that time played in the second tier of Swiss football.
[4] In the summer of 2005 N'Tiamoah signed for Luzern under head coach René van Eck, in the second tier of Swiss football, and here he re-discovered his form.
The year before the club had signed Jean-Michel Tchouga, with whom N'Tiamoah had played together during their time in Basel, and together they formed the team's new attacking duo.
Then Tchouga netted both goals in a 2–2 home draw against SC Kriens, which didn't turn the tide, but it did get the first point.
[6] The duo stayed with the club for the 2006–07 league season and were successful in reaching the 2006–07 Swiss Cup final and avoiding relegation.
However, because N'Tiamoah did not really understand himself with the team's new head coach Ciriaco Sforza, the striker left the club during the winter break.
In the qualifying round to the 2007–08 UEFA Champions League match on 24 July 2007 against Dinamo Zagreb N'Tiamoah was booked twice and was therefore dismissed.
[9] At the end of the year N'Tiamoah returned to Switzerland but moved on to play for Servette, signing an 18 month contract.
Servette, at that time, played in the second tier of Swiss football and were involved in a hard fight against relegation, but they were able to hold their place in the division.