Customer.io
Senior Software Engineer, Backend
Remote Backend Engineering role with clear candidate location fit.
PostedJul 6, 2026
Eligible countries10 accepted countries
Seniority signalSenior
Work settingRemote
Accepted candidate locations
Role overview
Senior Software Engineer, Backend
Requirements and responsibilities
Readable role content extracted into sections for faster review.
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
What we're looking for
- 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
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. We’ll explore topics like ownership, product thinking, and collaboration.
- 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.
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