Customer.io, founded in 2012, operates a customer engagement platform that enables businesses to send personalised messages across channels including email, push notifications, in-app messages, and SMS. The system uses real-time behavioural data to power these communications, serving over 8,000 businesses that collectively send billions of messages each day. The company has grown to more than 360 employees and reports annual recurring revenue exceeding $100 million.
The engineering team works across several technical domains, including AI, Go, React, Ember.js, data privacy, and reliable delivery at scale. The platform is built primarily for technically proficient marketing teams seeking to automate customer journeys based on live user behaviour.
Customer.io is headquartered in Portland, Oregon, and operates as a remote-first company with staff distributed across more than 30 countries. The company emphasises data privacy and reliable message delivery as core product principles.
