The phrase "a role which will" is correct and usable in written English.
It can be used when describing a position or function that is expected to perform a certain action or fulfill a specific purpose in the future.
Example: "She has accepted a role which will allow her to lead the new project team."
Alternatives: "a position that will" or "a function which will".
The ABC will recruit for a chief technology officer, a role which will be taken by David Pendleton until he leaves in June.
Higgins has been appointed chief financial officer and Liston, a former head of human resources, has been elevated to director of engagement, audiences and technology, a role which will see her control the new "content fund" which will build to $50m.
Today it is announced that Zhang is the BBC National Orchestra of Wales's new principal guest conductor, a role which will make her one of the UK's most prominent female conductors – she's the first woman to have a titled conducting role with a BBC orchestra – and which means she's going to be asked about the representation of her gender in the echelons in the conducting profession a great deal.
In financial services he has one - it's a role which will involve the supervision of banks, and other matters that affect the City of London.
The PMC provides a structure for achieving consensus positions among these stakeholders on crucial public policy issues, a role which will be vital to translating personalized medicine into widespread clinical practice.
He signed a multi-year deal to become an ambassador for the Chinese Super League, a role which will see him make three trips in 2013 to the country and play an exhibition game.
Lesley... is joining us to take a dual role which will be at the heart of the evolution and growth of our company," Joseph said in a message to Universal staff.
The σ2 plays a fundamental role, which will be each time smaller as the performance of the communication be better and better (i.e., as the EbNo increases, the σ2 will decrease until being almost equal to zero).
It is a relatively junior role, which will make her an assistant bishop in the diocese of Chester.
Under your leadership of the Department, Britain achieved a leading global role, which will be continued as Britain chairs the United Nations High Level Panel.
She has been promoted to women's development officer, a more strategic role which will see her spend at least another year overseas, organising tournaments and ensuring that clubs not only get girls playing but provide coaching to help them improve.
