From the University of Maryland, Faber earned a B.S. in 1926, a M.S. in 1928, and a Ph.D. in bacteriology in 1937. In 1945, he was appointed the head of his alma mater's Department of Microbiology, a position he held for 18 years. During World War II, Faber joined the United States Army and served from 1942 to 1946, attaining the rank of major. He spent three years working at the Walter Reed Army Medical Center in Washington, D.C. While teaching bacteriology at Maryland, Faber also held coaching duties. He served as the head coach for the Maryland lacrosse team from 1928 to 1963. During his tenure, Faber's lacrosse teams compiled a 249–57 record and secured eight outright or shared USILA national championships and nine Atlantic Coast Conference championships. From 1930 onward, Faber shared coaching duties with Albert Heagy, with the former running the offense and the latter the defense. In 1936, Faber led Maryland to capture the first Wingate Memorial Trophy, the national championship bestowed by the USILA. The following year, they shared the title with Princeton. In the inaugural North-South Senior All-Star Game in 1940, Faber coached the South team, which lost to the North team coached by Princeton's William F. Logan, 6–5. He also coached all-star teams in 1946 and 1956. In 1955 and 1956, Faber led Maryland to back-to-back 11–0 seasons, with the only close matches coming against period powerhouse Navy, in 1955, and the highly successful Mount Washington Lacrosse Club, 12–11 in 1956. In 1959, Maryland finished with a 10–1 mark as USILA co-champions alongside Army and Johns Hopkins, and Faber was named the USILA Coach of the Year. Faber also served on the football staff. He became the assistant field coach under Curly Byrd in 1933. Byrd was able to devote less time to the team because of his duties as university vice president. In 1930, Faber enticed Bosey Berger, Maryland's first basketball All-American, to join the football team with the promise of free late night dining hall meals. In, Faber took over as head coach when Byrd was promoted to university president. Faber continued to employ his predecessor's pass-oriented "Byrd system" and hired Richmond head coach Frank Dobson as an assistant. Despite facing "an almost suicidal schedule", Faber's veteran team led by back Bill Guckeyson compiled a 7–2–2 record to finish in third place in the Southern Conference. Faber was succeeded as head football coach by Dobson in 1936, but in turn, replaced him as a co-head coach alongside Al Heagy and Al Woods in 1940 and 1941. Those teams finished with 2–6–1 and 3–5–1 records, respectively, to bring Faber's combined football coaching record to 12–13–4. The coaching trio was subsequently replaced by Clark Shaughnessy, who two seasons prior had orchestrated a remarkable one-year turnaround at Stanford using a revolutionary version of the T formation. Faber also spent time as an assistant basketball coach at Maryland, and in 1932, filled in for head coach Burton Shipley who had fallen ill. Faber served two terms as a president of the ACC.
