Former OKCoin manager of international operations Zane Tackett has announced he will join Hong Kong-based bitcoin exchange Bitfinex.

Tackett became the latest public-facing figure to resign from OKCoin on 10th March. At the time, he cited a “difference of opinion” as well as “unsolved problems” facing the exchange as motivating factors.

Tackett revealed his position at Bitfinex will be familiar, as he will take over community outreach and product development, roles he also played at OKCoin. Further, he discussed some of the challenges facing the USD bitcoin trading leader, arguing the exchange must not stay complacent given the competition in the sector.

Tackett told CoinDesk:

“I think the best way to gain users is to interact with them and offer the best exchange in the world, and that’s what I’ll be looking to do at Bitfinex.”

The announcement notably follows the departure of OKCoin’s CTO Changpeng Zhao last month, and comes amid signs the exchange is shifting focus away from international trading.

Bitfinex is currently the market leader in USD bitcoin trading, according to data from Bitcoinity, trading 1.2m BTC over the last 30 days. By contrast, OKCoin is the number two exchange in both USD and CNY trading, trailing BTC China in its home market.