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Senior Software Engineer, Product/AI

Customer.io· Engineering
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Hybrid (Americas Remote)$150k - $250k + equityFull-timePosted 3mo ago

About the role

Senior Fullstack (Product) Engineer at Customer.io focused on building core product experiences with Go, React, Ember and AI, owning features end-to-end, and contributing to scaling and reliability.

Responsibilities

  • Build fullstack features in Go, React, and Ember that power key customer workflows
  • Collaborate with others to turn ideas into shipped customer value
  • Share knowledge and raise the bar through sharing progress publicly with short videos, thoughtful writing, and mentorship
  • Participate in an on-call rotation as required, supporting the reliability of the systems you build
  • Help evolve our systems to scale with more customers, messages, and use cases
  • 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 and scaling backend services and product-facing features
  • Fluency in TypeScript, React (or similar), and a statically typed backend language like Go
  • A strong care for frontend polish, backend performance, and the overall customer experience
  • Proficiency with APIs, relational databases, and writing testable, performant code
  • A bias for action over perfection, and pride in owning technical decisions

Skills

Required:Fullstack developmentGoTypeScriptReactAPIsRelational databasesTesting
Nice to have:EmberOn-call / SRE practices

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
  • professional development budget
Last updated Oct 18, 2026. Interested? Apply on the company site.

About Customer.io

Customer.io Platform: Automation, Data, Content Creation

The customer engagement platform for personalized customer journeys across all channels, fueled by first-party data.

AutomationContent CreationCustomer JourneysCustomer engagementDataFirst-party dataPlatformbrex-fastest-growing-2025
Company profileWebsite

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