Connah's Quay Nomads Maxwell spent a six-month
loan spell at
Welsh Premier League team
Connah's Quay Nomads during the
2008–09 season, making 20 appearances in all competitions, before being recalled by Wrexham in January 2009. allowing Maxwell the opportunity to start. Maxwell went on to play 21 consecutive games and kept 10 clean sheets during Russell's absence. His contribution was acknowledged when he agreed an extension to his contract keeping him at the club until the end of the 2010–11 season. Maxwell regained the place ahead of Russell to play the last nine games of the season keeping a further five clean sheets. A number of defensive club records were broken; clean sheets, goals conceded and the first season where no more than two goals were conceded in a single game. Maxwell was recognised for his performances with a number of fans awards, including being named the Wrexham Football Association 'young player of the season'. During the 2010–11 pre-season, Maxwell was joined at Wrexham by the more experienced
Scott Shearer, and found himself once again fighting for the starting place. Maxwell took over the position in the starting line up just 10 games into the new season and soon started to attract the attention of higher league clubs. He cemented his claim to the number one position when Shearer left the club during the January transfer window. Wrexham managed a play-off spot, but lost out to
Luton Town in the semi-final play-off games. Maxwell finished the season with a number of fans awards including the Wrexham Football Association Young Player of the Season for the second year running. Maxwell remained at Wrexham for the start of the 2011–12 season. After a frustrating season under new player manager
Andy Morrell and starting only 11 times after losing the number one position to
Joslain Mayebi, having been absent from the squad after being called up to the Wales under-21 side. He decided he wanted to leave the club and was subsequently released.
Fleetwood Town Maxwell was immediately signed by newly promoted Football League newcomers,
Fleetwood Town on 23 May 2012.
Return to Wrexham on loan On Transfer deadline day in January 2013 Maxwell signed for his former club
Wrexham on loan for the remainder of the 2012–13 season after first team goalkeeper Joslain Mayebi was ruled out with an injury for the rest of the season. Maxwell made his second Wrexham debut in a
Conference Premier match away to
Forest Green Rovers. In March 2013 Maxwell picked up his first career honour winning the
FA Trophy at Wembley with Wrexham. Wrexham went on to play at Wembley a second time where they lost to
Newport County in the
Conference play-off final.
Cambridge United loan Maxwell signed for
Cambridge United on loan until January 2014 and quickly established himself as part of the team. He was handed the number 1 shirt by manager Richard Money despite being on loan and made his team debut on the first day of the 2013–14 season with a win against
FC Halifax Town. The season started with a 16-game unbeaten run. His loan with Cambridge ended on 6 January 2014 and he returned to Fleetwood Town. During his loan period, Maxwell kept a total of 18 clean sheets and conceded only 10 times during 24 league games.
Return to Fleetwood Town After Cambridge failed to secure Maxwell's services for the remainder of the season Maxwell again returned to
Highbury to battle both
Scott Davies and
David Lucas for the number one spot. Maxwell finally made his club and simultaneously his Football League debut under new manager
Graham Alexander away from home against
Wycombe Wanderers in a 1–1 draw on 11 February 2014 Maxwell retained his place for the remainder of the season helping Fleetwood to a fourth-place finish and a place in the League Two play off finals. Maxwell kept a total of 11 clean sheets in 22 games for Fleetwood bringing his season total to 29 in 50 games with 24 in 41 competitive league games. Fleetwood went on to win the play-off final at Wembley on 26 May, beating
Burton Albion 1–0 in normal time. Following Fleetwood's promotion to
League One, Maxwell signed a two-year contract extension with Fleetwood until the summer of 2016. Fleetwood made an impressive start to the 2014–15 season with 10 points from the first 4 games good enough to top the League One table. Maxwell continued collecting clean sheets with three consecutive shut outs and only conceding one goal from a penalty in the season opener against
Crewe Alexandra. Maxwell continued as the club number one and played every game during the season helping Fleetwood finish in 10th equal on points with
Rochdale in 8th place. Only the top three clubs had a better defensive record. Maxwell's efforts were recognised with a number of personal awards; Players Player, Supporters Player of the season and The Community Player of the season. A change of strategic direction for the 2015–16 season saw the club fighting relegation for the entire season only securing League One status on the last day with a 2–0 win over already relegated Crewe Alexandra. Fleetwood eventually finish in 19th spot above relegated Fylde Coast rivals
Blackpool. Despite being constantly in and out of the relegation zone only the top seven clubs had a better defensive record. Maxwell's effort were recognised with a number of personal awards; The PFA Community Player of the season, the League One unsung hero award for April 2016 and was a finalist in the North West MBNA Football awards for the 2014–15 season.
Preston North End On 16 May 2016, Maxwell signed for
Championship side
Preston North End on a three-year deal, commencing 1 July 2016. He found himself competing for a starting place with
Anders Lindegaard who returned to Preston following a loan spell during the previous season, signing on a free transfer from
West Brom. Maxwell made his debut on 23 August in a 2–0 win against Oldham Athletic in the EFL Cup. He made his league debut on 23 September in a 1–0 win against Wigan Athletic. Maxwell replaced Lindegaard as first choice for the remainder of the 2016–17 season, and was rewarded with a contract extension to 2020. At the end of the season, he was named Community Player of season at the club's annual awards.
Declan Rudd was signed by Preston in June 2017, as competition for the number 1 spot. Maxwell secured the starting place for the first game of the 2017–18 season, but Rudd became the regular first choice.
Charlton Athletic loan On 8 January 2019, Maxwell signed for
League One side
Charlton Athletic on loan until the end of the 2018–19 season. Maxwell returned to Preston at the end of the season, without having made a first team appearance for Charlton.
Hibernian loan Maxwell was loaned to
Scottish Premiership club
Hibernian in July 2019, with the arrangement due to run for the whole of the 2019–20 season. He began the season as deputy to
Ofir Marciano who was dropped in September giving Maxwell his first-team chance.
Blackpool Maxwell joined
Blackpool on 24 January 2020, on a deal until the end of the season. He signed a new two-year contract at the end of the 2019–20 season, taking him until the summer of 2022. In December 2020 he tested positive for
COVID-19 and had to self-isolate, missing matches. Maxwell won the League One
EFL Golden Glove for the 2020–21 season after keeping (as of the 4 May victory over
Doncaster Rovers) 21
clean sheets. On 22 July 2021, Maxwell signed a new two-year contract, with an option to extend by a further twelve months.
Huddersfield Town In July 2023 Maxwell joined Huddersfield Town on a two-year contract. Maxwell announced his retirement on 24 April 2025. ==International career==