Senior Software Engineer - Backend Platform

Customer.io is seeking a Senior Software Engineer to join their remote Platform team, focusing on backend infrastructure for a data-intensive marketing automation platform. The role involves tackling complex distributed systems challenges, including designing for fault tolerance and scaling services under production pressure. Candidates should have substantial experience with distributed systems and large-scale backend architecture, as well as a strong understanding of reliability, observability, and fault tolerance. Familiarity with event-driven systems, message queues, or data pipelines is advantageous. The position requires a collaborative mindset and the ability to enhance team performance. The technology stack includes Go, React, Ember, and AI, which support rapid deployment and scaling. This role is ideal for individuals who thrive at the intersection of scale, reliability, and developer experience, and who are eager to take ownership of critical infrastructure.