Sekekete was born in Johannesburg, where he attended Queens High School. In 2012, he was selected to represent the Golden Lions at the premier rugby union competition for high schools in South Africa, the Under-18 Craven Week. He started all three of their matches as a lock, as his team qualified to play in the unofficial final match of the tournament, where they lost to Gauteng rivals the Blue Bulls.
2013–2015 : Youth rugby
After school, Sekekete joined the Golden Lions academy. He featured in all fourteen of the team's matches in the 2013 Under-19 Provincial Championship, starting thirteen of those and playing off the bench in the other. He scored three tries during the season – one against the s and one in each of their matches against the s. The Golden Lions topped the log to qualify for the semi-finals, at which stage they beat 27–25, before losing 23–35 in the final against the. Sekekete started the 2014 season by playing in the Varsity Cup competition for, being utilised as a flanker for the first time. He featured in all seven of their matches in a disappointing season that saw the team finish second-bottom of the log which meant they had to compete in a relegation play-off to retain their Varsity Cup status. Sekete started the play-off match in which UJ easily beat Varsity Shield runners-up to remain in the top tier. He was then included in the South Africa Under-20 squad that competed at the 2014 IRB Junior World Championship in New Zealand. He was not included in the squad for their opening match in Pool C, a 61–5 victory over Scotland, but played off the bench in their next match, a 33–24 victory over the hosts. He was named on the bench for their remaining three fixtures in the competition – a 21– win over Samoa to secure top spot in Pool C to qualify for the semi-finals, a 32–25 win over New Zealand in the semi-finals and a 20–21 loss to England in the final – but failed to get any game time in those matches. He returned to domestic action by making twelve appearances for the team in the 2014 Under-21 Provincial Championship. He scored two tries during the competition – both in a 113–3 victory over – as the Golden Lions finished in third spot on the log before losing to the Blue Bulls in the semi-finals, the only match of the season that Sekekete did not feature in. He made his domestic first class debut on 13 March 2015, appearing as a replacement in the 's 31–21 victory over the, his only appearance in the competition. He again featured in every match for the team in the 2015 Under-21 Provincial Championship. In his most prolific season so far in his career, he scored tries against the Sharks, Eastern Province and Leopards during the regular season, and another one in their 20–43 defeat to Western Province in the semi-finals of the competition.
2016–present : Golden Lions
Sekekete's second taste of domestic first class action came in the 2016 Currie Cup qualification series for the Golden Lions XV, making two starts and coming on as a reserve in six matches, scoring a brace of tries in their final match in the competition, a 24–28 loss to the in Grabouw. He was included in the ' Currie Cup squad for the first time for the 2016 season. He was named on the bench for their opening match of the season against the and made his Currie Cup debut by coming on for the final twelve minutes of a 68–26 victory.
