
Senior Software Engineer - Email Channel
Customer.io is hiring a Senior Software Engineer to own an email channel end-to-end. Responsibilities include building and evolving product-facing frontends and scaling backend systems that handle high volumes of messages (queues, event streams, rate limiting), integrating with external providers, and operating observability and monitoring. Requires 7+ years experience, strong Go or similar statically typed language skills, React frontend experience, cloud-native familiarity (AWS/GCP), and MySQL experience. Salary range provided: $150,000–$200,000 USD per year.













