Senior Software Engineer, Full Stack

at Customer.io

📍 Argentina
📍 Brazil
📍 Canada
📍 Chile
📍 Colombia
📍 Mexico
📍 Peru
📍 United States

USD 150,000-200,000 per year

SENIOR

✅ Remote

Tech Stack
Tag name is followed by "@" symbol and proficiency level value. About proficiency levels:

1-2 — basic awareness. Minimal hands-on experience, and a rudimentary understanding of the technology's purpose;

3-6 — daily use. Comfortable and regular usage, capable of handling common tasks and challenges related to the technology;

7-9 — you are an expert, you can teach others, you know all the pitfalls and tricks;

10 — exceptional knowledge, comprehensive understanding, and adeptness in all aspects of the technology, including advanced problem-solving. Think twice before claiming or demanding such level.

AI API @ 6 Go @ 6 React @ 6 TypeScript @ 6

Details

Customer.io is looking for a curious, driven Full Stack Product Engineer to own significant parts of the product and build core experiences for customers. The role involves designing, building, and shipping communication tools powered by real-time behavioral data.

Responsibilities

Build full-stack features in Go, React, and Ember that support key customer workflows.
Collaborate with teammates to turn ideas into shipped customer value.
Share knowledge and raise the bar through short videos, thoughtful writing, and mentorship.
Help evolve systems to support more customers, messages, and use cases.
Use AI agents to make multi-file changes by scoping work, writing prompts, and verifying the output.
Own problems end to end, make technical decisions, and drive complex projects through ambiguity.
Contribute to frontend polish, backend performance, and the overall customer experience.

Requirements

7+ years of experience building and scaling backend services and product-facing features.
Fluency in TypeScript, React or a similar frontend framework, and a statically typed backend language such as Go.
Strong attention to frontend quality, backend performance, and customer experience.
Proficiency with APIs, relational databases, and writing testable, performant code.
A bias for action over perfection and pride in owning technical decisions.

Compensation And Benefits

Starting salary of $150,000–$200,000 USD, or the 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 employees and their families.
16 weeks of paid parental leave.
Unlimited paid time off.
Remote work and wellness stipends.
Professional development budget.