Customer.io seeks a Senior Software Engineer on the Platform team to design and evolve distributed systems in Go that handle billions of daily events, store petabytes of data, and ensure high availability and reliability. Role responsibilities include architecture decisions for performance and real-time event processing, improving service communication and APIs, tackling high-throughput data pipelines and queues, debugging production systems with instrumentation, and mentoring others. The role typically requires 10+ years of experience. Starting salary range listed as $150,000–$200,000 USD per year.

Customer.io is hiring a Senior Software Engineer (Backend) to design, build, and operate large-scale distributed systems in Go. The role requires 7+ years building scalable systems, experience with cloud-native environments (AWS/GCP), familiarity with MySQL, observability and operating production systems, and ownership of end-to-end architecture, testing, deployment, and monitoring. Salary range: $150,000–$200,000 USD/year.

Build and evolve distributed systems in Go to power large-scale messaging; own architecture, schema design, testing, deployment, and monitoring. Requires 7+ years building scalable distributed systems, experience with cloud-native environments (AWS/GCP), familiarity with MySQL and observability tooling, and strong focus on reliability and performance.

Customer.io seeks a Senior Full-Stack Software Engineer to design, build, and ship core product experiences. The role focuses on full-stack features using Go, React, and Ember, with responsibilities including API integration, relational database work, performance and scalability improvements, system design, and using AI agents for code changes. Requires 7+ years building and scaling backend services and product-facing features. Position is remote across EMEA; listed starting salary $150k–$200k USD.