"need to be proficient" is a correct and usable phrase in written English.
It can be used in a sentence to convey the need for someone to have a certain level of skill or expertise in a particular area. Example: In order to succeed in this job, you need to be proficient in Microsoft Excel and other data analysis tools.
I wanted to be a stunt man until I realised you need to be proficient in several martial arts, gymnastics and acrobatics, and all I had was proficiency in doing stupid things, I was pretty young!
Graphics assistants will need to be proficient in Photoshop and other digital imagery software.
Although the eight-day journey does include training and practice climbs, you will still need to be proficient with ice axe and crampons before you go.
Those who are to fly the highest and earn the most need to be proficient not in engineering, but in management.
But a definitive analysis by the Georgetown Center on Education and the Workforce forecasts that in the decade ahead a mere 5 percent of entry-level workers will need to be proficient in algebra or above.
In this article, "storyteller and technologist Latoya Peterson explores why all journalists need to be proficient in the technology and how it is developed". The Markup, a nonprofit journalism outlet for providing independent analysis of how technology is changing the news ecosystem, officially launched last week.
We felt we got these kids, they worked really hard, and they stayed with it, but they didn't get the skills they needed to be proficient.
Everyone on the team needs to be proficient.
The custodian needs to be proficient in producing English-language daily and monthly client reports, such as statements and transaction overviews; as well as annual tax reporting with the U.S. required content that you can give to your tax advisor.
After researching a little, it became apparent that inventors needed to be proficient with intellectual property (e.g., patents) to protect their ideas.
Kiser, a 20-year-old from Butler, Pennsylvania, needs to be proficient at firing TOW missiles in the desperate heat of battle to kill enemy tanks about to overrun his position.
