Fully remote senior engineer role on a small Solutions Squad building public APIs, SDKs, integrations, and developer tooling for an e-commerce loyalty platform. Hands-on work includes Ruby on Rails services, JavaScript SDKs and frontend libraries (React, Ember.js, TanStack), PostgreSQL, Kafka, and API security/ergonomics. Role expects significant overlap with Pacific Time working hours and at least 5 years of professional Rails experience.

Senior Full-Stack Engineer with a Front-End focus to design, build, test, and maintain shopper-facing and merchant-facing applications at Smile.io. Requires minimum 5 years' experience, expert-level front-end framework experience (Ember.js and/or React with TypeScript), back-end familiarity (e.g., Ruby on Rails, Node.js, Python), and experience with observability and high-traffic systems. Remote, Canada-based position with specified daily overlap with EST hours.