Senior SDK & Developer Experience Engineer, Integrations

Customer.io; United States; Remote; USD 150,000 - 200,000; Full time

Benefits offered by this job

Full benefits package

Remote work stipend

Parental leave

Professional development budget

Job summary

Customer.io is hiring a Senior Developer Experience Engineer to own SDKs and developer tooling across Android, iOS, Node and Go. You’ll drive API design, shipping of high‑quality experiences, and partner with product and design to empower integrations.

You’ll lead end‑to‑end SDK initiatives, improve CI/CD, and apply AI agents to multi‑file changes while delivering measurable developer value and strong customer empathy.

Qualifications

• Expert-level competency in at least one established programming language and strong API design fundamentals.
• Experience building and evolving production-grade software with an understanding of system composition and developer consumption.
• Fluency with current LLMs and agentic coding tools to navigate unfamiliar codebases and languages.

Responsibilities

• Build and evolve Customer.io's SDKs across 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.
• Partner with product and design to turn loosely defined goals into a great developer experience.
• 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.

Skills

Programming languages

API design

LLMs / AI tools

Autonomy

Communication

Multi-language stacks

Leadership

Tools

Claude/Cursor/Codex

CI/CD pipelines

SDK tooling

Job description

Customer.io is hiring a Senior Developer Experience Engineer to own SDKs and developer tooling across Android, iOS, Node and Go. You’ll drive API design, shipping of high‑quality experiences, and partner with product and design to empower integrations.

You’ll lead end‑to‑end SDK initiatives, improve CI/CD, and apply AI agents to multi‑file changes while delivering measurable developer value and strong customer empathy.