Senior Backend Engineer

Summary

Join Customer.io, a company used by over 7,500 companies to send billions of messages daily, as a deeply experienced backend engineer. You will help architect and evolve the infrastructure behind their core platform, solving tough distributed systems challenges at scale. This role values ownership, customer focus, and a healthy skepticism for the status quo. You will design and evolve distributed systems, lead architectural decisions, improve service-to-service communication, and work across teams to resolve system issues. Leveraging AI tools and sharing knowledge are also key aspects of this position. Customer.io offers a competitive salary and comprehensive benefits package.

Requirements

• Significant experience (typically 10+ years) building scalable, distributed systems in Go (or similar statically typed languages)
• Deep experience with databases - relational (MySQL, Postgres) and non-relational (DynamoDB, BigTable) - and how to make them fast
• Comfort working in cloud-native environments (AWS, GCP)
• Familiarity with APIs, observability, and operating production systems
• A bias for action over perfection, and pride in owning technical decisions

Responsibilities

• Design and evolve distributed systems in Go to handle billions of daily events and messages and store and index petabytes of data
• Lead architectural decisions around performance, reliability, and real-time event processing
• Improve service-to-service communication through better APIs, messaging systems, and event-driven patterns
• Work across teams to uncover bottlenecks and system issues, and lead initiatives to resolve them for a smoother customer experience
• Tackle high-throughput challenges across data pipelines, queues, and scheduling infrastructure
• Able to debug production systems at scale using effective instrumentation, and resolve issues quickly and confidently
• Share knowledge and raise the bar through sharing your progress publicly with short videos, thoughtful writing, and mentorship
• Leverage AI tools to prototype, move faster, and make better decisions

Benefits

• 100% coverage of medical, dental, vision, mental health, and supplemental insurance premiums for you and your family
• 16 weeks paid parental leave
• Unlimited PTO
• Stipends for remote work and wellness
• A professional development budget