In 1929 he graduated from the workshop of figurative painting. Tillberga in Latvian Academy of art with degree work "Washerwoman".
For further study he traveled to European centers of art – Paris, Florence, Rome, Venice, Vienna and German cities.
After graduating from the Academy, the artist worked as a drawing teacher.
In exhibitions, Y. Jeghers participated since 1928.
He participated in all exhibitions organized by the cultural Foundation (in 1942 received an award of FC).
In 1934 organized a separate exhibition with J. Zvirbulis and O KRC.
In 1944 he emigrated to Germany and in 1950 goes to the USA, where also organized two exhibitions of his work.