Case Study: How Firstwork scaled AI hiring interviews to 20,000 calls a minute with Plivo
Key results
The challenge
Firstwork automates frontline hiring for hospitality, medical staffing, and logistics, and runs AI voice agents for screening interviews, making voice the backbone of its product. In frontline hiring, a dropped call is a lost applicant. The team spent five to six months evaluating platforms; most degraded before reaching the required volumes or failed on multilingual calls under real load.
The solution
Firstwork stress-tested Plivo the way it had tested other providers, starting at 100 calls per minute and pushing higher, running Spanish for US logistics hiring and Hindi for Indian operations on the same platform without a separate pipeline per language.
“They were not just demo ready. They actually did what they spoke about. And that was the best part about partnering with Plivo.”
MMohitGlobal Head of Business Development, Firstwork
The results, in context
Within three months, Firstwork was running 20,000 calls per minute with zero breaks and no degradation in call quality, up from 100. It reported 99.95% uptime across global voice operations, zero call drops, and two languages (Spanish and Hindi) live under production load.