Watford Having originally joined the club as an Under-15, Jakubiak signed a scholarship deal with Watford in May 2012. In his first year, Jakubiak's strike against
Peterborough United's academy side won the January 2013 League Football Education Goal of the Month award. On 11 March 2014, towards the end of his scholarship, Jakubiak was loaned to
Braintree Town, joining his Watford teammate
Bernard Mensah at the
Conference side. His loan spell ran until 13 April, but in that time he made 11 appearances, including two starts, and scored one goal, on his debut against
Wrexham. Jakubiak was subsequently involved in Watford's final three games of the 2013–14 season. He was an unused substitute in games against
Derby County and
Charlton Athletic before making his debut from the start in Watford's defeat at home to
Huddersfield Town on 3 May 2014. Six days after making his Watford debut, Jakubiak signed his first professional contract, a two-year deal with Watford having a further option for an additional year. Despite reporting a two-year deal in 2014, at the conclusion of the 2014–15 season Watford announced Jakubiak had signed a new one-year contract with the club. In June 2016 Watford reported they had taken up their option of a further year on Jakubiak's contract, but in August they announced that he had now signed a new four-year contract with the club. On 23 June 2020, Watford announced that they would not be offering Jakubiak a new contract.
Professional-era loan spells On 13 August 2014, Jakubiak moved on loan to
League Two side
Oxford United until 4 January 2015. He made his debut as a substitute in a 2–1 defeat to
Mansfield Town on 16 August 2014. Jakubiak scored his first Oxford United goal, on his first start, in their game against
Dagenham & Redbridge on 30 August 2014. After three months at the club, he was recalled by Watford on 4 November. On 27 November 2014, he joined League Two side Dagenham & Redbridge on a one-month-long youth loan. Jakubiak scored on his debut the next day, on 28 November 2014, in a 2–0 win over
Bury. His loan spell was extended on 31 January 2015. The day Jakubiak's loan spell expired, Jakubiak scored his second goal for Dagenham & Redbridge, in a 3–1 win over
Cheltenham Town. After that, Jakubiak's loan spell with the club was extended further until the end of the season. Jakubiak then scored his third goal of the season, in a 3–1 loss against
Burton Albion on 21 February 2015 and two months later on 18 April 2015, Jakubiak scored, in a 3–2 win over
Newport County. Jakubiak made 23 appearances and scored four times for the club. On 31 August 2016, Jakubiak joined
Fleetwood Town on loan until January of the 2016–17 season. Although he originally joined for the duration of the season, he was recalled by Watford in January 2017 after an injury crisis at the club. On 30 January 2017, Jakubiak joined
Wycombe Wanderers on loan until the end of the 2016–17 season. In January 2018, he moved on loan to
Scottish Championship club
Falkirk. On 9 August 2018 Jakubiak moved on loan to League One side
Bristol Rovers for the 2018–19 season. He opened his account for Bristol Rovers in an
EFL Trophy tie against
West Ham Under-21s on 18 September. He made 38 league appearances for the club, 26 off the bench, scoring twice. In July 2019 Jakubiak joined League One club
Gillingham on a season-long loan deal. Despite leaving the club in January he ended the season as the Kent side's top goalscorer in the league with six goals. In January 2020, Jakubiak left Gillingham, and joined
Scottish Premiership side
St Mirren on loan until the end of the season.
Dundee In August 2020, Jakubiak signed a two-year deal with
Scottish Championship side
Dundee. Jakubiak picked up an ankle injury in a pre-season win against
Peterhead that would sideline him for several weeks. Jakubiak would make his return from injury and first competitive appearance for Dundee as a substitute against
Ayr United. In December, during a league game against
Inverness Caledonian Thistle, Jakubiak picked up a tendon issue in his thigh, which would leave him out of action for a few months. He would once again return to the pitch in a home win against
Raith Rovers. After achieving promotion with the club, Jakubiak would score his first competitive goal for Dundee the following season in the
Scottish League Cup in July 2021. In September, Jakubiak was injured once again in bizarre fashion, suffering a dislocated shoulder during an altercation at a Dundee nightclub. The injury would require surgery, which would again leave him out of action for the remainder of the year. On 31 January 2022, Jakubiak signed a one-year contract extension with
Dundee and joined
Scottish Championship side
Partick Thistle on loan until the end of the season. Jakubiak would score with his first competitive touch of the ball of the
2022–23 season for Dundee, converting from the penalty spot in a
Scottish League Cup win over
Hamilton Academical. He would go on to have a very successful start to the season, scoring four goals in four League Cup group stage games including a brace against
Forfar Athletic. After hamstring and thigh issues respectively early in the season, Jakubiak returned to action for Dundee as a substitute in a home league victory over
Ayr United in October. Jakubiak would finally score his first league goal for Dundee on 28 January 2023 as a substitute in a 3–0 win over league leaders
Queen's Park, in which he also set up the opener. After years of injury disappointment, Jakubiak would form a successful striking partnership with
Zach Robinson and would have a massive impact for Dundee, scoring 10 goals in 30 games including the opener in their
Scottish Championship title-clinching win away to
Queen's Park. On 31 May 2023, Dundee announced Jakubiak had not been offered a new contract and would leave the club.
Dunfermline Athletic On 8 September 2023, after spending several weeks training with the club, Jakubiak reunited with former manager
James McPake and joined
Scottish Championship club
Dunfermline Athletic on a deal until the end of the season. He made his debut the following week as a substitute in an away league win against
Queen's Park. Jakubiak would open his scoring account for the
Pars on 30 December, netting a brace away to
Ayr United. On 19 March 2024, Jakubiak was named to the
SPFL's Team of the Week after a strong performance in a league win over leaders
Dundee United. On 21 May 2024, Dunfermline announced that Jakubiak would leave the club upon expiry of his contract.
Partick Thistle return Three years after his initial loan spell, Jakubiak returned to
Partick Thistle in February 2025, signing a short-term deal until the end of the season. On 11 March, Jakubiak made his second Partick Thistle debut off the bench and scored in a 2–0 away win over Queens Park. On 4 June, Thistle confirmed Jakubiak had left the club.
Al Ittihad Jakubiak joined
UAE Second Division League club Al Ittihad in 2026. ==International career==