Based on descriptions on the FHI website, it looks like Kyle Scott filled this role, from July 2015 to September 2017.
From the earliest snapshot of his FHI bio page:
The page is still up but it doesn't look like he holds the position anymore.
He seems to be a project manager at BERI now:
On November 13, 2017 FHI opened the position for applications.
ETA: Louis Francini comes to the same conclusion on Quora. (Context: I asked the question on Quora, figured out the answer, posted this comment, then Louis answered my question.)
Has there been any news on whether this position has come to fruition?