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Senior Developer Experience Engineer, Integrations

Customer.io· Engineering
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Hybrid (Americas Remote)$150k - $200k + equityFull-timePosted 3mo ago

About the role

Developer Experience Engineer focused on building and evolving Customer.io SDKs and developer tools across platforms, leading SDK initiatives, and enabling reliable, high-quality developer experiences with AI-assisted workflows.

Responsibilities

  • Build and evolve Customer.io's SDKs across platforms - including Android, iOS, Node, and Go - and the developer tools that support them
  • Lead SDK initiatives end to end: set technical direction, write the code, manage the release, and own the outcome
  • Improve SDK delivery infrastructure - CI, automated testing, versioning, publishing, and release processes - so shipping is reliable and low-friction
  • Partner closely with product and design to turn loosely defined goals into a great developer experience
  • Participate in an on-call rotation as required, supporting the reliability of the systems you build
  • Use AI agents to make multi-file changes across unfamiliar codebases and languages by scoping the work, writing the prompt, and verifying the output
  • Bring strong customer empathy to the role - understanding what the engineers integrating with our SDKs actually need, and occasionally engaging directly with them

Qualifications

  • Expert-level competency in at least one established programming language, with strong software design and API design fundamentals
  • Experience building and evolving mature, production-quality software, with a clear understanding of how systems fit together and how other developers consume them
  • Exceptional fluency with current LLMs and agentic coding tools (e.g., Claude, Cursor, Codex) - using AI to understand unfamiliar codebases, work across languages, and run things in parallel or autonomously
  • High autonomy in ambiguous environments - you clarify the problem, validate its value, and drive implementation without close direction
  • Strong written and verbal communication, with the ability to explain technical decisions and tradeoffs clearly
  • Ability to work effectively across multiple languages and stacks; prior experience in every language we support (Swift, Kotlin, Node, Go) is not required

Skills

Required:Programming language proficiencyProduction-quality software developmentAI and agentic coding toolsAutonomy in ambiguous environmentsCommunicationMulti-language collaboration

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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