Fedorova was introduced to figure skating by her grandmother at the age of four years.
Initially a singles skater, she took up pair skating in 2009 with Maxim Miroshkin.

In the 2011–12 season, Fedorova/Miroshkin made their Junior Grand Prix debut, finishing 5th in Austria.
They won the silver medal at the 2012 Winter Youth Olympics.

The following season, Fedorova/Miroshkin won silver and gold at their Junior Grand Prix events in Austria and Germany respectively, qualifying them for the JGP Final.
After taking the junior gold medal at the 2012 Warsaw Cup, they competed at the JGP Final in Sochi, Russia, where they also won gold.
Fedorova/Miroshkin finished 8th at their first senior Russian Championships and won the junior title.
They won the bronze medal at the 2013 World Junior Championships after placing 7th in the short program but first in the free skate.

In 2013–14, Fedorova/Miroshkin started their season by winning silver at the 2013 JGP Slovakia, behind teammates Maria Vigalova / Egor Zakroev.
They won gold at their next event, the 2013 JGP Czech Republic.
Their results qualified them to the JGP Final in Fukuoka, Japan.
At the final, Fedorova/Miroshkin placed second in the short program and third in the free skate, winning the bronze medal behind Vigalova/Zakroev.
At the Russian Championships, the pair finished sixth on the senior level and fourth on the junior level.

In the 2014–15 Junior Grand Prix, Fedorova/Miroshkin were assigned at the 2014 JGP Czech Rep. where they finished 2nd to Canadians Julianne Séguin / Charlie Bilodeau.
In their next event, they won another silver medal qualifying them to their third ISU JGP Final held in Barcelona, Spain.
In the finals, they won the silver medal with a total of 165.78 points.
They then competed at the 2015 World Junior Championships and won the bronze medal.
Fedorova was introduced to figure skating by her grandmother at the age of four years. Initially a singles skater, she took up pair skating in 2009 with Maxim Miroshkin.
In the 2011–12 season, Fedorova/Miroshkin made their Junior Grand Prix debut, finishing 5th in Austria. They won the silver medal at the 2012 Winter Youth Olympics.
The following season, Fedorova/Miroshkin won silver and gold at their Junior Grand Prix events in Austria and Germany respectively, qualifying them for the JGP Final. After taking the junior gold medal at the 2012 Warsaw Cup, they competed at the JGP Final in Sochi, Russia, where they also won gold. Fedorova/Miroshkin finished 8th at their first senior Russian Championships and won the junior title. They won the bronze medal at the 2013 World Junior Championships after placing 7th in the short program but first in the free skate.
In 2013–14, Fedorova/Miroshkin started their season by winning silver at the 2013 JGP Slovakia, behind teammates Maria Vigalova / Egor Zakroev. They won gold at their next event, the 2013 JGP Czech Republic. Their results qualified them to the JGP Final in Fukuoka, Japan. At the final, Fedorova/Miroshkin placed second in the short program and third in the free skate, winning the bronze medal behind Vigalova/Zakroev. At the Russian Championships, the pair finished sixth on the senior level and fourth on the junior level.
In the 2014–15 Junior Grand Prix, Fedorova/Miroshkin were assigned at the 2014 JGP Czech Rep. where they finished 2nd to Canadians Julianne Séguin / Charlie Bilodeau. In their next event, they won another silver medal qualifying them to their third ISU JGP Final held in Barcelona, Spain. In the finals, they won the silver medal with a total of 165.78 points. They then competed at the 2015 World Junior Championships and won the bronze medal.
Lina Fedorova