Moritz began his career with Avaí FC's youth categories, signing a professional contract with SC Internacional in 2003, aged 16. He was assigned to the academy and was top goal scorer in most of the Youth tournaments. He was promoted to first team in 2006, playing some matches in State League. Due to limited chances, Moritz signed a contract with Fluminense FC. He helped the club to avoid relegation in the last game of the season, and also to win the 2007 Copa do Brasil. Moritz left Flu and signed a contract with Turkish club Kasımpaşa, in 2007. After three full seasons in Kasımpaşa, he signed a three-year contract with Kayserispor. And signed a two-year contract with Mersin in 2011 summer. Moritz then went on trial at Rangers in Scotland. On 15 August 2012, his trial period at Rangers came to and end. Moritz said "My time with Rangers has come to an end, I enjoyed it but it was not meant to be... Talking with english clubs..." On 24 August, he signed a one-year contract with Crystal Palace. On 6 November 2012, he scored his first goal for Crystal Palace in the 5–0 victory over Ipswich Town, in Ian Holloway's first game in charge. In his next match, he scored the equaliser for Crystal Palace in a 1–2 win against Peterborough united on 10 November 2012, continuing his goalscoring run, before finding the net again on 17 November 2012 with a volley against Derby County – his third goal in three games. He then went on to score two free kicks against Wolverhampton Wanderers on 1 January 2013, receiving praise from Crystal Palace manager Ian Holloway. Moritz joined Bolton Wanderers on a one-year deal on 1 August 2013. On 9 November, Moritz scored his first goal for Bolton Wanderers against Millwall in a 3–1 victory. In July 2014, Bolton confirmed that at the expiration of his contract, Moritz had left the club. In September 2014, South Korean Club, Pohang Steelers announced that Moritz joined the club on a two-year contract which began on 1 January 2015. On 10 October 2014, it was announced that Moritz will play for Mumbai City FC in the inaugural Indian Super League. On 18 October, Moritz scored his first goal for the club en route to the league's first ever hat-trick in a 5–0 win over FC Pune City at the DY Patil Stadium. In July 2015, Moritz agreed to return to Mumbai City for the 2015 season, but After only 1 game in October, Moritz returned to parent club Pohang Steelers. On 6 December 2015, Moritz joined Buriram United in Thai Premier League for the 2016 season. On 3 January 2018, he signed with Brazilian second tier Avaí Futebol Clube after a stint with Turkish club Denizlispor.
Moritz has got a two tattoos on his right elbow as one dedicated to his parents and one is an iconographic symbol of Star and crescent. Moritz learned to speak Turkish during his spells in Turkey. In 2010, he expressed that he would be delighted to play at Turkey national football team.
