2012 was a big year for mobile user acquisition and monetisation platform Chartboost as it powered to more than six billion sessions per month.

But 2013 is going to be given bigger given that Sequoia Capital has led a $19 million Series B funding round.

Existing investors TransLink Capital and SK Telecom Ventures also participated.

Chartboost previously raised $2 million in October 2011.

All aboard the gravy train

The investment shows the potential with which the big VC companies view fast-growing outfits such as Chartboost, which are building the infrastructure for many mobile game developers' success.

2011 also saw lots of Chartboost's competitors and fellow travellers raising funds: Flurry ($25 million), SessionM ($20 million), Fiksu ($10 million), MoPub ($12 million), and Kiip ($11 million).

"In a historically opaque industry, Chartboost is laser-focused on empowering developers with transparency and control over their businesses," said co-founder and CEO Maria Alegre.

"We have big dreams for the future and we are thrilled to be partnering with Sequoia going forward."

Fired up and hiring

The company has announced its technology now reaches more than 300 million monthly active devices, handling six billion game sessions per month. It says this activity positions it as the "world's largest mobile gaming technology platform".

"Maria and Sean [Fannan, co-founder] built Chartboost to solve problems they encountered in the mobile gaming space and embody the authenticity we look for in founders," commented Sequoia partner Jim Goetz, who becomes a Chartboost board member as part of the investment.

"Their unique approach to app discovery and pro-developer mindset frees up studios large and small to do what they do best: make great games. We are excited to be part of the Chartboost team."

Given the size of the investment, the company is now aggressively expanding its team. You can find open positions and apply here.