Thomas-Oliver began his career at Florida International as a wide receiver and had 36 receptions for 489 yards and a touchdown in two seasons.

[1] He became a cornerback prior to his junior year after jokingly covering teammates in practice, making 24 starts over his last two seasons.

As a senior, he earned second-team All-Conference USA honors after posting eight passes defensed, an interception, 2.0 sacks, and 4.0 tackles for loss.

[1] Thomas-Oliver was selected in the seventh round of the 2020 NFL draft with the 221st overall pick by the Carolina Panthers.

[7] On August 29, 2023, Thomas-Oliver was waived for final roster cuts, but signed to the Panthers' practice squad the following day.