Customer.io

Customer.io builds a customer engagement platform designed to help businesses create personalized journeys and drive better outcomes across messaging channels including email, push, SMS, and in-app messaging. The platform serves over 9,000 brands, ranging from startups to global enterprises, by unifying data, messaging, and artificial intelligence into a single system. Its technology helps teams turn customer data into personalized experiences, optimize messaging with insights from results, and build automated campaigns through features like data-driven segmentation and an AI Agent that works with tools using MCP, CLI, API, or webhooks.

The company incorporates artificial intelligence and machine learning into its platform infrastructure to support teams and AI agents, enabling users to build automations in a conversation, analyze performance instantly, and find smarter paths to better outcomes. Under the hood, the engineering stack utilizes technologies such as Go, React, and AI to scale communication handling billions of interactions, daily API calls, and webhooks for active users.

The open roles indicate that Customer.io is building engineering teams focused on product and artificial intelligence development. The available positions include senior-level individual contributor roles, specifically a Staff Software Engineer for Product and AI, which are structured as remote positions located in the Americas.