Söderblom was chairman of the board and artistic leader of Q-teatteri between 1996-2002. On his initiative Q-teatteri founded the Baltic Circle, a network for free theatre groups around the Baltic Sea. Q-teatteri also hosts the important international Baltic Circle theatre festival. Söderblom was the first artistic leader of this festival.
Alongside with his work with Q-teatteri, Söderblom has directed in theatres around Finland and abroad. The best known of his international work is the prize-winning staging of Jouko Turkka´s play Connecting People in Von Krahli-theater in Tallinn.
In recent years he has returned to opera and is considered to be a leading Finnish opera director. He has directed performances such as the prize-winning productions of Mozart´s Entführung aus dem Serail and Le Nozze di Figaro at Pori Opera and the huge outdoor performance of Wagner´s Der fliegende Holländer in Turku.
Söderblom has been praised for his directions of contemporary opera. As a trained musician he has the ability to read also intricate new music scores and has directed the world premieres of several Finnish operas such as Tapio Tuomela´s Mothers and Daughters, Lars Karlsson´s Rödhamn and Mikko Heiniö´s The Hour of the Serpent, all at the Finnish National Opera and Veli-Matti Puumala´s Anna Liisa during the Helsinki Festival 2008.
For the Turku2011- European Capital of Culture, Söderblom directed yet another big scale opera production, the world premiere of “Erik XIV” by the composer Mikko Heiniö and dramatist Juha Siltanen.
The series of Söderblom´s productions of Mozart´s operas continued during Helsinki Festival 2013 with Don Giovanni.
Among Söderblom´s recent works are the staging of J.S. Bach´s St John´s Passion with Helsinki Baroque Orchestra in November 2013: and a semi-concertante performance of Dmitri Shostakovitsh long forgotten opera parody Orango in August 2014 for Helsinki Festival. In August 2015 he presented as his artistic farewell production as director for Helsinki Festival a widely praised semi-staged performance of Alban Berg’s opera Wozzeck.
Erik Söderblom´s role in Finnish theatre as an important pedagogue is worth mentioning. In the years 1998-2002 Söderblom was leading a famous music theatre class at Turku Polytechnic. From 2001 to 2009 he was a Professor of Acting at the Helsinki Theatre Academy. During the years 2005-2009 he also worked as vice rector for this university.
Söderblom was CEO and the Artistic Director of Helsinki Festival (www.helsinkifestival.fi) from 2009 up to August 2015. During his leadership the festival developed to become not only one of the most outstanding festivals of Europe, but with its 300.000 annual visitors also the biggest art festival in the Nordic countries. In September 2015 he left his position at the festival to focus on his own artistic work.