Early years Dech debuted in the
State Basketball League (SBL) with the
East Perth Eagles in
2013. For the
2013–14 NBL season, he joined the
Perth Wildcats as a development player and was a member of the championship-winning team in April 2014. That year, he was named the
SBL's Most Improved Player and helped the Eagles win the
championship for the
2014 SBL season. He then continued on with the Wildcats as a development player in
2014–15 before playing a third season with East Perth in
2015.
College The 2015–16 season saw Dech
redshirt with the
Metro State Roadrunners. He returned to the Eagles for the
2016 season and then made his college debut with the Roadrunners in the 2016–17 season. In 28 games for the Roadrunners, he averaged 13.0 points and a team-high 6.9 rebounds per game. Dech transferred to
Barry University and joined the
Buccaneers for the 2017–18 season to play his final season of eligibility. In 32 games, he averaged 13.3 points and a team-high 7.0 rebounds per game. He earned
SSC All-Newcomer Team honours and was named in the SSC All-Tournament Team. After a three-game stint with the
Rockingham Flames at the back-end of the
2018 SBL season, Dech re-joined the Perth Wildcats for the
2018–19 NBL season as a training player. He was later designated as Perth's nominated replacement player and filled in for the injured
Damian Martin and
Mitch Norton throughout the season. In March 2019, he was crowned a champion for the second time when the Wildcats defeated
Melbourne United in the
2019 NBL Finals. Dech was subsequently awarded the Coaches' Award by head coach
Trevor Gleeson. He went on to play in New Zealand during the off-season, where he helped the
Wellington Saints win the
NZNBL championship. On 9 April 2019, Dech signed a two-year deal with the
Illawarra Hawks after being highly sought after as a free agent. His remaining contract with the Hawks was voided when the club was liquidated on 18 May 2020. Dech initially signed with the
Southland Sharks before they withdrew prior to the start of the
2020 New Zealand NBL season. On 22 July 2020, Dech signed a three-year deal with the
Adelaide 36ers. He built a reputation as one of the league's standout defenders during the
2020–21 NBL season. Following his first season with the 36ers, Dech played for the
North Adelaide Rockets of
NBL1 Central during the
2021 NBL1 season. He helped the Rockets win the
NBL1 Central championship while earning grand final MVP honours. Dech missed the start of the
2021–22 NBL season with a
hematoma of his quad. Dech joined the
Canterbury Rams for the
2022 New Zealand NBL season. Dech made his debut for the team on 8 May 2022 against the
Auckland Tuatara. On 21 May 2022, Dech scored an NZNBL individual season-high 35 points in a loss to the Nelson Giants. On 29 April 2022, Dech signed a three-year contract extension with the 36ers. Following the
2023–24 NBL season, he joined the
East Perth Eagles of the
NBL1 West for the
2024 season. On 31 May, he recorded a
triple-double with 20 points, 11 rebounds and 10 assists in the Eagles' 90–78 win over the
Perth Redbacks. Dech missed seven games during the
2024–25 NBL season due to a hamstring injury. Dech joined the
Knox Raiders of the
NBL1 South for the
2025 season. He was named
NBL1 South Defensive Player of the Year. On 22 April 2025, Dech signed a three-year deal with the Perth Wildcats, returning to the club for a third stint. A calf injury prevented Dech from playing throughout the pre-season and he was subsequently ruled out of the
2025–26 season opener. On 14 April 2026, Dech and the Wildcats agreed to mutually part ways.
National team In 2022, Dech was selected to play for the
South Sudanese national team in the
FIBA World Cup Qualifiers. Dech was named in South Sudan's final roster for the
2024 Olympics. ==Personal life==