South Shields MP Emma Lewell-Buck has been promoted in Labour leader Jeremy Corbyn's reshuffle of his shadow cabinet.
The 37-year-old was been appointed shadow minister for devolution and local government after a shake-up which took more than 30 hours of wrangling.
She will answer to Jon Trickett, the shadow secretary of state for communities and local government.
Ms Lewell-Buck succeeded David Miliband as MP for South Shields in May 2013
Since her election she has campaigned on a number of issues, including opposing the bedroom tax, calling for action on the cost of living crisis and calling for reform of child protection.
She sits on the House of Commons’ Work and Pensions Select Committee, which deals with issues including food safety, wildlife and the natural environment.
Recently, she has been the Parliamentary Private Secretary to Andy Burnham, Labour’s Shadow Home Secretary.
Her appointment came as part of a reshuffle which saw Mr Corbyn sack two senior figures for "disloyalty" and install a Trident opponent in the key shadow defence brief as he seeksto get a grip on his top team.
After the news, she Tweeted: "Sad to be leaving Home Office Team as @andyburnhammp PPS but pleased to be joining DCLG as Shadow Jnr Minister."