Senior Full-Stack Software Engineer, Discover

Circle is building an AI-powered, all-in-one platform for digital businesses, enabling creators, educators, coaches, and businesses to manage communities, content, events, and payments. The Senior Full-Stack Software Engineer will help evolve Circle Discover by building discovery, recommendation, content feed, and purchasing experiences, while improving frontend and backend systems, data services, and product quality.

Responsibilities:

• Build polished, high-converting purchasing experiences that help members discover digital experiences and businesses sell digital memberships, courses, and content at scale
• Run A/B tests and experiments to validate changes that boost user acquisition, retention, and conversion behavior
• Implement and improve features in the Discover Next.js frontend application together with API endpoints in our Rails backend
• Work on data pipelines and services driving search and recommendations
• Proactively improve the quality of our codebase, processes and architecture
• Work closely with Circle's leaders throughout the feature design process
• Work closely with our designers to create a world-class user experience
• Foster a bias for action, prioritizing speed of iteration without compromising on the quality of code or user experience

Requirements:

• 5+ years experience working as a full-stack engineer on complex web applications with significant scale (100k+ rpm, 100GB+ databases)
• Strong proficiency in Next.js, ReactJS, TypeScript, Tailwind, Ruby on Rails and MySQL/Postgresql. Familiarity with both frontend and backend is necessary, but a high degree of proficiency in frontend is required
• A desire to work in an environment which values speed of iteration and individual autonomy, while also embracing personal accountability and the ability to collaborate effectively as part of a dynamic team
• Comfortable in a fast-paced environment with a certain level of ambiguity, especially when learning and picking up new technologies when projects require it
• Great communication skills both in writing and verbal/oral (English)
• Experience working on a fully distributed remote team
• Strong alignment with our values, find our values on our career page if you haven't read up on them yet
• You are proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5
• Previous experience working with creator-platforms, social content and video feeds, or marketplaces
• Experience with A/B testing and experimentation to optimize user experience, performance and conversion within consumer-facing applications
• Previous exposure to search, recommendation and personalization at scale
• Production experience with Next.js and hybrid React/Next.js systems for high-traffic applications