Kubiak enters his fourth season with the 49ers, and first as the team's offensive passing game specialist, after spending the previous three seasons as the assistant quarterbacks coach (2022-23) and defensive quality control coach (2021).

As the team's assistant quarterbacks coach, Kubiak has worked closely with QB Brock Purdy, helping him break multiple records and lead the 49ers to a 21-6 record (postseason included) over the previous two seasons (2022-23). In 2023, Purdy set the single season franchise records for passing yards (4,280) and passer rating (113.0) and became the first 49ers quarterback to throw 30-or-more touchdowns since the 2001 season. When Purdy became the starter in 2022, Kubiak played a role in helping him become the first quarterback in franchise history to win their first five starts and the third rookie quarterback in NFL history to win at least their first five starts. In 2021, Kubiak assisted a defensive unit that that ranked third in the NFL in total defense, holding opponents to 310.0 yards per game.

Kubiak enters his fourth season with the 49ers, and first as the team's offensive passing game specialist, after spending the previous three seasons as the assistant quarterbacks coach (2022-23) and defensive quality control coach (2021).

As the team's assistant quarterbacks coach, Kubiak has worked closely with QB Brock Purdy, helping him break multiple records and lead the 49ers to a 21-6 record (postseason included) over the previous two seasons (2022-23). In 2023, Purdy set the single season franchise records for passing yards (4,280) and passer rating (113.0) and became the first 49ers quarterback to throw 30-or-more touchdowns since the 2001 season. When Purdy became the starter in 2022, Kubiak played a role in helping him become the first quarterback in franchise history to win their first five starts and the third rookie quarterback in NFL history to win at least their first five starts. In 2021, Kubiak assisted a defensive unit that that ranked third in the NFL in total defense, holding opponents to 310.0 yards per game.

Prior to joining the 49ers, Kubiak spent three seasons (2018-20) as head coach at Strake Jesuit (TX) College Preparatory, leading the Crusaders to a 24-11 record and a playoff appearance in each season. Kubiak is the only coach in the school's history to win double-digit games as part of the University Interscholastic League (UIL), which Jesuit joined in 2003.

A native of Houston, TX, Kubiak attended Colorado State University where he was a quarterback for the Rams from 2007-10. He majored in English at the school and would later earn a master's degree in the subject from Texas Christian University in 2013. Kubiak is the son of longtime NFL coach, and former 49ers quarterbacks coach, Gary Kubiak. His brother, Klint, is the offensive coordinator of the New Orleans Saints.