Zello runs a push-to-talk voice platform on a polyglot backend (C++, Rust, Go, Python) backed by MySQL, MongoDB, ScyllaDB and Cassandra on GCP with Kubernetes and Terraform. A full Grafana/Prometheus/Loki/Tempo observability stack plus open roles in support, data and ops point to a focus on reliability, incident response and cutting support escalation time as enterprise accounts grow.
Zello is a privately held company founded in 2012 and headquartered in Austin, Texas, with 51–200 employees. It offers a digital walkie-talkie app that turns smartphones and other devices into push-to-talk radios over Wi-Fi and cellular networks. The product serves frontline workers, business teams and emergency responders, with features such as private channels, message replay, location tracking and emergency alerts. Go-to-market runs on HubSpot, Gong and Aircall, and current hiring is based in the United States.
Zello uses C++, Rust, Go and Python, with MySQL, MongoDB, ScyllaDB, Cassandra and Redis on GCP, Kubernetes and Terraform, observability via Grafana, Prometheus, Loki and Tempo, and Snowflake with dbt for analytics.
Zello is hiring in the United States across data, marketing, support, engineering, legal, ops and sales, mostly at senior level, though hiring velocity is currently slowing.
Zello is headquartered in Austin, Texas. It is a privately held company founded in 2012 with 51–200 employees.
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Zello's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →
This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.
