In 2002, Olena graduated from the National Metallurgical Academy of Ukraine majoring in Economics of Enterprise.
In 2002-2007, she worked at Interpipe Nizhnedneprovsky Tube Rolling Plant (NTRP) where she grew from a labour organisation and rate-setting specialist to the head of the plant’s labour remuneration unit.
In 2009, Olena Semych joined DTEK as the Head of the Compensation and Benefits Unit in the Personnel Planning Department of the HR Division. In September 2010, she was promoted to the Head of the Personnel Planning Department in DTEK’s HR Division. In August 2014, Ms Semich was appointed the HR Director of DTEK Energy.