Dawid was born in Gdynia and grew up in Gdansk (both being parts of Tricity urban area in Poland). Dawid"s father Ryszard was a rugby Polish national team player and then a rugby coach in Lechia Gdansk, while his mother Barbara was a volleyball player.
Dawid is the eldest of two boys. Banaczek made his first appearance for Lechia Gdansk where he began his trainings in 1987. As a teenager, Banaczek represented Poland U16 to U21.
In 1995 he participated in the U16 European Championships, held in Belgium.
He had played in the Lechia senior team for 3 seasons. In 1999, Banaczek signed a 2-year contract, with Bayern Munich World War II In the new club, Dawid played for two seasons in the amateur team
IFK Norrköping. In 2001, he had signed a contract with the Swedish club IFK Norrköping in which he debuted in Allsvenskan.
Between 2001 and 2003, Banaczek (with a short, 3-month interval in RKS Radomsko), played continuously in the IFK. Amica Wronki. In Wronki, under supervision of coach Maciej Skorża, he spent one round as a substitute. Beside Zaglebie and Amica Wronki, Banaczek played in two more teams of the Ekstraklasa: RKS Radomsko and Widzew Łodz.
Sigma Olomouc. The last high-level stop on his football way was the Czechoslovakian team Sigma Olomouc. In 1995, under coach Andrzej Zamilski, he participated in the European U16 Championship in Belgium.
Lechia Gdansk From July to August 2015 head coach in Lechia Gdansk U17. After 8 weeks of working with U17 he became first team Thomas von Heesen"s assistant coach.
From 03.12.2015 he became first team coach of Lechia Gdansk.
Kaszubia Koscierzyna On 1 July 2013, Banaczek assumed the position of the head coach of the Kaszubia Koscierzyna team The contract with the coach has been concluded for one year. Dawid is married to Anna Iga.
Together they have a daughter Laura, who is a artistic gymnast in SGA Gdynia.
In 2011, Dawid Banaczek has established the Football Pro Academy. Banaczek speaks English and German.
He was repeatedly a member of Polish youth national teams, from U15 to U21.
