Sereikaitė started the World Cup in Dresden for the first time in February 2011 and finished 29th over 500 m and 13th place over 1500 m. Her best placement at the 2011 European Championships in Heerenveen was 12th place over 500 m. At the Junior World Championships in Melbourne in 2012 , she won silver over 500 m. In March 2013 at the World Championships in Budapest she won 35th place over 1000 m, 34th place in the all-around and 16th place over 500 m. In her first Olympic participation in Sochi in 2014 , she came in 24th place over 500 m and 16th place over 1500 m. Her best result at the following World Championships in 2014 in Montreal was 12th place over 1000 m. In the 2014/15 season she achieved her first podium in the World Cup with third place over 1500 m in Dresden. At the 2015 European Championships in Dordrecht , she was sixth in the all-around competition. She achieved third place over 1000 m. In February 2015 she won the bronze medal in the 500 m at the Winter Universiade in Granada . The following month, seventh place over 1000 m was her best result at the World Championships in Moscow . At the 2017 European Championships in Turin , she came 12th in the all-around competition. Her best result at the 2017 World Championships in Rotterdam was 31st place over 500 m.
Personal bests
500 m 43.551 sec. (installed on March 14, 2015 in Moscow)
1000 m 1: 29.830 min. (installed on September 27, 2013 in Shanghai)
1500 m 2: 20.398 min. (installed on February 15, 2014 in Sochi)
3000 m 5: 30.274 min. (installed on January 25, 2015 in Dordrecht)