The phrase "a massive team of" is correct and usable in written English.
It can be used to describe a large group of people working together towards a common goal or project.
Example: "The company assembled a massive team of experts to tackle the complex challenges of the new project."
Alternatives: "a large group of" or "an extensive team of".
To keep them, Obama and other dignitaries safe, a massive team of military, civilian and private security officers are dramatically limiting the freedom of movement in swathes of Washington.
With each iteration, Ford planners tested the system with consumers, while a massive team of software designers watched remotely.
Instead, he'd have to employ a massive team of people to click "view ads" on every advertiser Page on Facebook — and do so continuously, so long as his brand lasts — to try to stay ahead of the scammers.
Google has over the years built up a massive team of people working in areas like machine learning, natural language processing and artificial intelligence to build out features in search, mobile and many of its applications.
It used to be the only way to make a game and reach millions was to toil in the service of a traditional studio on a massive team, devoting all of one's education to the physics of a character's hair, or to the light on a knife if one was a veteran.
Unless you have a massive team -- managing all of the different accounts feels scary.
"It's great fun being at the school gates, and looking after my children full-time," she says, "but it's not quite the same as the buzz that you get from running a massive team and being in charge of a £4bn budget.
"But the Tour is the biggest race in the calendar and for a rider in my position, with the backing of a massive team, it would be crazy not to do it".
A lot of people will see it as an individual piece of brilliance but it was a massive team contribution to go through 41 phases of rugby.
He sees rugby as the perfect springboard to a medical career: "Being a doctor, you work in massive teams of nurses, physios and pharmacists, so the skills you learn from meeting people in rugby crossover nicely.
