Sandra Jessen

In February 2016, Sandra joined Bayer Leverkusen on loan for the rest of the 2015–16 Bundesliga season. She rejoined Þór/KA in May 2016. On 28 September 2017 she won the Icelandic championship with Þór/KA after defeating FH, in the last game of the season, 2–0 with goals from herself and Sandra Stephany Mayor. On 4 January 2018 Sandra joined Slavia Praha on loan until the end of April. She is scheduled to return before the start of the 2018 Úrvalsdeild kvenna season. On 22 September 2018, Sandra was voted as the Úrvalsdeild kvenna Player of the Year. In January 2019, Sandra signed with Bayer Leverkusen. In January 2022, Sandra signed back with Þór/KA. On 21 June 2023, she suffered a broken hand in a match against Tindastóll. In August 2025, Sandra joined 1. FC Köln. In the away game against SGS Essen, she scored both goals for her team for a 2–1 victory.

On 13 June 2025, Sandra was called up to the Iceland squad for the UEFA Euro 2025.

International

Scores and results list Iceland's goal tally first, score column indicates score after each Jessen goal.

Þór/KA

Úrvalsdeild kvenna: 2012, 2017 Icelandic Women's Super Cup: 2013 Icelandic Women's Cup runner-up: 2013 Individual

Úrvalsdeild kvenna Player of the Year: 2018