From 2003 till 2006, Sergei worked for the Estonian Public Broadcasting as editor. Afterwards Sergei worked for Estonian newspapers as well as international news photo agencies Scanpics, Xiuhua, Ria Novosti as photographer. Making documentary photos, Sergei fell in love with the documentary genre. From
2007 till 2009 he worked as cameraman on a number of films for different production companies in Estonia. After the success in film festivals and on Estonian TV of the films "Generation 0" and "War and peace of Semjon Shkolnikov", Alyona and Sergei decided to create their own production company to produce creative
documentaries. All film made by Trofimov have strong sosial issue.