Club career
Augustin, nicknamed Oneață, was born on 11 October 1955 in Bucharest, Romania and began playing junior-level football in 1966 at Dinamo București. In the summer of 1973, he helped the team win the national junior championship. He made his Divizia A debut for the senior squad on 23 April 1975 in a 5–0 victory against Chimia Râmnicu Vâlcea, winning the title in his first season spent at the club, coach Nicolae Dumitru giving him a total of five appearances. For the 1976–77 season, Augustin went to Jiul Petroșani in order to play more often. On 17 October 1976, he scored his first Divizia A goal in Jiul's 4–0 home win over ASA Târgu Mureș.
Afterwards, Augustin returned to Dinamo where for several years he would form a successful offensive trio with Gheorghe Mulțescu and Costel Orac, together being called "AMO" by the fans, a nickname inspired by the initials of their family names. From 1982 to 1984, he earned three consecutive Divizia A titles. In the first one, he played 31 matches under coach Valentin Stănescu, scoring seven goals. In the following two seasons, he worked once again with Dumitru who gave him 31 appearances each year, and Augustin scored 14 and 17 goals respectively, making these the most prolific seasons of his career. Augustin also won three Cupa României, but played in only one of the finals, the one in 1984 when coach Dumitru used him the entire match in the 2–1 win over rivals Steaua București. Over the years he scored two goals in the derby against Steaua in two 1–1 draws in the league. He made some notable performances with The Red Dogs in European competitions, such as helping the club eliminate Inter Milan by scoring one goal in the 4–3 victory on aggregate in the 1981–82 UEFA Cup. He also appeared in seven matches during the 1983–84 European Cup campaign, scoring three goals against Kuusysi Lahti, Dinamo Minsk, and Hamburg—the latter in a 3–0 first-leg victory that helped eliminate the title holders—before the team reached the semi-finals and were defeated by Liverpool.
In the middle of the 1985–86 season, Augustin went to play for Victoria București. In 1988, he joined Rapid București where on 11 December he made his last Divizia A appearance in a 2–0 victory against Argeș Pitești, totaling 383 matches with 111 goals in the competition and 33 games with 10 goals in European competitions. Augustin ended his career in 1990 after playing two seasons in Divizia B for Chimia Râmnicu Vâlcea and Unirea Slobozia.
Managerial career
Augustin began his coaching career at Dinamo București in 1992 as an assistant to Florin Halagian. In his early years of coaching, he had multiple tenures as assistant for Dinamo, and also for Romania's under-16 national team and ARO Câmpulung Muscel. In 1998, Augustin was named head coach at ARO Câmpulung Muscel in Divizia B, managing a second-place finish in the 1999–2000 season. In the following years, he continued to work for teams in the Romanian lower leagues such as Dacia Unirea Brăila, Gloria Buzău, Unirea Focșani, Juventus București, Dinamo București II, Minerul Lupeni, Phoenix Ulmu, CS Buftea and Viitorul Chirnogi. From 2012 to 2013, Augustin successively coached Romania's under-18 and under-19 national teams.
