The public affairs agency was chosen following a pitch for the brief, which will cover an 18-month project on the issue named Rebuilding Shattered Lives.
Laura Blake, account director at Connect Communications, is leading the team with operations director Emily Wallace.
Blake explained that the agency’s role would be to engage with a wide array of stakeholders, as well as helping run events as part of the campaign.
The campaign, which will be launched with a parliamentary event in June, will focus on themes including childhood trauma and domestic violence.
She added: ‘This addresses the need to recognise women within the homeless sector and we will be supporting them through the project, making sure they talk to the right people, and getting the right message across.'
Among those being targeted are MPs, members of local government and others within the voluntary sector.
Connect Communications’ team will be reporting to Tanya English, executive director of fundraising and comms at St Mungo's, and public affairs manager Kim Harper.
English said the charity wanted to use the agency’s ‘significant public affairs’ expertise, adding: ‘We want our Rebuilding Shattered Lives campaign to build the most comprehensive showcase of best practice and policy when it comes to supporting homeless and vulnerable women.’