Sweid is a graduate of the theater department at Tel Aviv University, and took his first steps in theater when he joined the Arab-Hebrew Theater in Jaffa. He went on to participate in television shows including Dancing again tonight (1991), Lane of White Chairs (a winner at the 1996 Acre Festival), Oh Brother Boom Boom (which in 2003 won at the Haifa festival for children's programming), Dragon (2004), and Immigrants (2005).
On stage, he performed alongside Ruth Kanner in 2001's Things You See Here Do Not See From There; in 2002 he appeared in Sea Shadow.
Sweid also participated in the international production The Time We Did Not Know Anything About Each Other, and in the dance production Barefoot. In 2001 he became director of a community theater program for both Arabs and Jews in Ramallah.