[Hiring] Senior Software Engineer, Backend @Customer.io

Role Description

We’re looking for experienced backend engineers who care deeply about reliability, performance, and scalability. You’ll design, build, and evolve the systems that power communication at massive scale - while helping us push the boundaries of what great engineering can look like.

What You’ll Do

• 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 sharing your progress publicly with short videos, thoughtful writing, and mentorship
• Use AI agents to make multi-file changes by scoping the work, writing the prompt, and verifying the output

Qualifications

• 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 (we use 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

Compensation & Benefits

• Starting salary for this role is $150,000 - $200,000 USD (or equivalent in local currency) depending on experience and subject to market rate adjustment
• 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
• And more

Our Process

• Application - We review everyone with care. Tell us why you're interested.
• Recruiter Call (30 mins) - Let’s chat about what you’re looking for and how we work.
• Behavioral Interview (60 mins) - Talk with one of our hiring managers about your experience, values, and working style.
• Technical Interview (60 mins) - A collaborative system design conversation focused on scaling challenges.
• Take-Home Assignment - Complete a short, realistic task similar to what you’d work on here.
• Assignment Review Call (60 mins) - Walk us through your work and discuss tradeoffs, priorities, and how you’d iterate.

Join Us!

If you’re excited by what you read and want to build software that makes communication better for everyone—apply now.