On August 15–17, Vladinova competed at the 2015 Sofia World Cup and finished 7th in the all-around ahead of Azeri gymnast Marina Durunda.

[8] On March 17–20, she then competed at the 2016 Lisboa World Cup where she finished 6th in the all-around with a total of 70.250 points, she also qualified to hoop, ribbon and clubs final.

In 2017, Vladinova competed at the 2017 Grand Prix Moscow finishing 4th in the all-around and qualified to all the apparatus finals, placing 4th in hoop, ribbon, 5th in ball and 7th in clubs.

On March 31 - April 2, Vladinova competed at the 2017 Grand Prix Marbella finishing 4th in the all-around behind Russia's Iuliia Bravikova, she qualified to all the apparatus finals winning 3 silver medal in clubs, ribbon, ball and a bronze in hoop.

She qualified for all 4 finals, finishing 4th in hoop and clubs, taking another bronze with ball and her first ever title from a WC - a gold with ribbon.

At the same competition, Neviana was also voted "Queen of the world cup" by all the accredited journalists present and was awarded a special tiara.

Vladinova competed at the quadrennial held 2017 World Games in Wrocław, Poland from July 20–30, she qualified in all the apparatus finals finishing 8th in hoop, 5th in ball, 7th in clubs and 4th in ribbon.

On August 5–7, Vladinova finished 5th in the all-around behind Russia's Iuliia Bravikova at the 2017 Minsk World Challenge Cup, she qualified in all apparatus finals and won gold medal in hoop ahead of Aleksandra Soldatova, she also won silver in clubs, a bronze in ribbon and finished 7th in ball.

On August 30 - September 3, Vladinova and Katrin Taseva represented in the individual competitions for Bulgaria at the 2017 World Championships in Pesaro, Italy; she qualified in 3 apparatus finals: finishing 4th in clubs, 5th in hoop and won a bronze medal in ball.

On April 13–15; she returned to competition at the 2018 Pesaro World Cup finishing 7th in the all-around; she qualified in 3 event finals placing 8th in hoop, 5th in ball and 7th in clubs.

On April 20–22, at the 2018 Tashkent World Cup, Vladinova finished 6th in the all-around behind Israel's Nicol Zelikman, she qualified to 3 apparatus finals.