Senior Software Engineer – Email Channel

Hi, I'm Brian, Senior Director of Engineering at Customer.io. We're looking for experienced engineers who want to own the email channel end to end — from the infrastructure that delivers billions of messages reliably, to the product surfaces our customers use to build, send, and analyze their campaigns. You'll work across the stack, bringing both systems thinking and product craft to one of the most technically rich channels in the industry.

Over 8,000 companies — from scrappy startups to global brands — use our platform to send billions of emails, push notifications, in‑app messages, and SMS every day. Customer.io powers automated communication that people actually want to receive.

We help teams send smarter, more relevant messages using real‑time behavioral data. Under the hood: Go, React, Ember and AI help us ship fast and scale with confidence.

What We Value

Ownership

You own ...