[4] Notable performances during her years onstage as a theatre actress include those in works by such varied authors and playwrights as: Rainis, Venta Vīgante, Boris Kabur, Gunnars Priede, Oskar Luts, Eduard Vilde, Aldo Nicolaj, Erskine Caldwell, Maxim Gorky, Astrid Lindgren, August Jakobson, Ardi Liives, Hella Wuolijoki, Fyodor Dostoyevsky, Molière, Henrik Ibsen, and Terence Rattigan.
[6] Eili Sild's first prominent television appearance was the character Mari in the 1965 feature-length Ants Kivirähk and Valdur Himbek-directed drama Külmale maale for Eesti Telefilm.
She has appeared frequently on Eesti Rahvusringhääling (ERR) in radio plays and reading monologues and short stories by authors such as A. H. Tammsaare, Lilli Promet, and Jaan Kaplinski, among many others.
[9] Eili Sild's first substantial film role was that of Maia in the 1964 Grigori Kromanov and Jüri Müür-directed black-and-white drama Põrgupõhja uus Vanapagan for Tallinnfilm, based on the multi-layered eponymously titled 1939 novel by A. H. Tammsaare.
[13] In 1992, Sild made a small appearance in the Lembit Ulfsak-directed family comedy Lammas all paremas nurgas, which follows the adventures of two young boys who discover a painting that was believed to be lost long ago.
[14] In 2012, Sild returned to the screen as the character Ilme in the Anna Hints-directed dramatic short Vaba maa, opposite actors Rita Raave and Raivo Trass.