Pierre's racing career began in karts, when, aged ten, he contested the French Minime Championship, finishing the season 15th overall. The following season he finished sixth, and in 2008, now in Cadets, he finished fourth.
In 2009 he made the move to international karting, finishing 3rd overall in the CIK-FIA World Cup (KF3) series and SKUSA Super Nationals XIII - TaG Junior and Grand Prix Open Karting (KF3).
Finishing runner-up in the CIK-FIA European Championship (KF3) in 2010, the following year Pierre made the move to single-seaters, contesting the French F4 Championship. Wins at Spa, Albi and Le Castellet were enough to see him finish fourth in the championship.
2012 saw him in Formula Renault 2.0 NEC and Formula Renault 2.0 Eurocup, but with little success.
He remained in Formula Renault 2.0 Eurocup in 2013, taking the title with wins at Moscow, the Hungaroring and Le Castellet. The final, title deciding event, saw a controversial clash with title rival Oliver Rowland, who incurred a drive-through penalty.
In 2014, by now part of the Red Bull Driver Programme, Pierre switched to Formula Renault 3.5 Series with Christian Horner's Arden team, the youngster finishing runner-up to Carlos Sainz Jr.
That same year, Pierre made his GP2 debut at Monza, replacing Caterham Racing driver Tom Dillmann who had "other commitments". He subsequently took part in the post-season GP2 test with DAMS, opting to join the team for 2015 alongside (Williams test driver) Alex Lynn.
Whilst it was a mixed season for Pierre, the Frenchman involved in more than his fair share of incidents, 2015 at least saw the Frenchman make his F1 debut having been named as reserve driver for the Red Bull teams. At the post-Spanish GP test, Pierre, driving the Toro Rosso, completed 131 laps, finishing the day seventh overall. Next day, now in the Red Bull, he finished third overall, another outing in the RBR11 coming in the post-Austrian GP test.
In mid-January 2016, still a member of the Red Bull Junior Programme, it was announced that Pierre would contest the GP2 Series with Prema, which was making its debut in the series. His teammate was 2015 European Formula 3 runner-up and GP2 rookie Antonio Giovinazzi.
Pierre won the 2016 GP2, making history in the process as the championship was to subsequently be renamed F2.
With 4 wins, the Frenchman narrowly beat his rookie teammate to the title, the difference being just 8 points.
At the end of 2016, Pierre was given the chance to broaden his experience, by racing in the highly competitive Japanese Super Formula Championship along with his commitments as test driver for Red Bull and Toro Rosso and an outing with the Renault e.dams Formula E team replacing Sebastien Buemi in New York as the Swiss fulfilled his WEC commitments.
On 26 September, it was announced that Pierre would make his F1 race debut in the Malaysian GP, replacing Daniil Kvyat. Finishing 14th, what was most impressive was that the youngster made it to Q2 on his F1 qualifying debut.
Finishing 13th in Japan, Pierre was forced to miss the United States Grand Prix in order to contest the final round of the Super Formula series. In one of those strange twists of fate, while Kvyat was called in to replace him in the Toro Rosso, bad weather meant the cancellation of the Super Formula event and therefore Pierre missed out on the title.
Solid performances in Mexico and Brazil were followed by a half-hearted outing in Abu Dhabi, but by that time the Faenza outfit had already decided to retain Pierre for 2018.
Five outings wasn't nearly enough for us to get an idea of the French youngster's ability, but it gave him some decent ground work ahead of his first full season.
Going into 2018 however, the question mark wasn't so much hanging over Pierre, but rather the team's new engine partner Honda, not forgetting the fact that the car would be the 13th chassis from Toro Rosso... and we know how tempting fate worked out for Red Bull with the RB13.
Ominously, having qualified last in Melbourne, next day's race saw Pierre retire after just 13 laps, the Frenchman suffering a power unit failure.
All that was forgotten a couple of weeks later however, when the youngster finished an amazing fourth in Bahrain - having qualified sixth - and while the retirements of the Red Bull pair and Raikkonen certainly aided his cause, the fact is that even without their various issues he would have finished best of the rest.
While it was back to reality in China, where he finished 18th, it was by now becoming clear what the team's philosophy was, as reports emerged that just three races into the season an approach had been made to secure the services of McLaren protege Lando Norris to replace Hartley.
While the team played down the reports, it was clear that when updates became available they were to be found on Pierre's car long before his kiwi teammate got a look-in.
When it was finally confirmed that Red Bull would be switching to Honda engines for 2019, it came as no surprise that Toro Rosso was called on to act as guinea pig, and though Hartley bore the brunt of the numerous grid penalties that followed as the Japanese manufacture sought further improvements, so too Pierre had his fair share.
As a result of the penalties Sunday afternoons were that little bit harder, and in a midfield as hotly contested as that witnessed for much of the season it was inevitable that points finishes would be hard to come by.
Nonetheless, Pierre finished a strong 7th in Monaco and 6th in Hungary, and though there were just two further points finishes over the course of the year he out-scored his teammate by 25 points.
Known to be one to run to the media even before he entered F1, Pierre continued to show signs of this in 2018, and as the season progressed he appeared to delight in rubbishing his teammate. Indeed, as the relationship soured, in Brazil he refused the order to yield to Hartley and in the process cost the kiwi and the team a point or two.
Following the departure of Ricciardo to Renault, for 2019 Pierre is promoted to the 'big team', where he will partner Verstappen.
Like the Dutch youngster, Pierre has a very high opinion of himself and his talent and is not known for his compromising nature.
Aside from having to deal with a new engine partner, Messrs Horner and Marko could well find themselves having to deal with two warring teammates... and we all know how that worked out when Vettel was partnered with Mark Webber.