Senior Full-stack Engineer, Applied AI

Responsibilities

• Ship full-stack AI projects end-to-end on a product built in Ruby on Rails backend and React frontend
• Design and run experiments to validate AI features
• Build and integrate components for AI infrastructure
• Improve processes, tools, and systems to scale AI features
• Help stay up-to-date with cutting-edge AI research
• Work closely with Circle's leaders and designers
• Foster a bias for action by prioritizing speed of iteration

Requirements

• 6+ years experience working as a full-stack engineer on high-traffic production applications
• Strong proficiency in Ruby on Rails, MySQL / PostgreSQL, ReactJS
• Hands-on experience building AI features in production
• Strong experimentation mindset
• A desire to work in a fast-paced environment
• Strong alignment with company values
• Proficient in English (CEFR Level C2 / ILR Level 5)