Senior Software Engineer, Backend

Stack

Responsibilities

• ▹Design and build distributed systems in Go that help customers send timely, relevant messages at scale
• ▹Collaborate across teams to debug issues and deliver reliable solutions
• ▹Own problems end to end - from architecture and schema design to testing, deployment, and monitoring
• ▹Share knowledge and raise the bar through videos, writing, and mentorship
• ▹Use AI agents to make multi-file changes by scoping the work, writing the prompt, and verifying the output

Requirements

• ▹7+ years of experience building scalable, distributed systems in Go (or similar statically typed languages)
• ▹Comfort working in cloud-native environments (AWS, GCP)
• ▹Familiarity with relational databases (MySQL) and an understanding of performance tradeoffs
• ▹Experience with observability tooling and operating production systems
• ▹A bias for action over perfection, and pride in owning technical decisions

Soft skills

What we offer

• ▹Starting salary $150,000-$200,000 USD (or equivalent in local currency) depending on experience
• ▹100% coverage of medical, dental, vision, mental health, and supplemental insurance premiums for employee and family
• ▹16 weeks paid parental leave
• ▹Unlimited PTO
• ▹Stipends for remote work and wellness
• ▹Professional development budget

About the company

Customer.io's platform is used by over 8,000 companies - from scrappy startups to global brands - to send billions of emails, push notifications, in-app messages, and SMS every day. Under the hood, Go, React, Ember, and AI help the team ship fast and scale with confidence.