170K–170K USD / year
Lead Engineer, AI Quality
AIRemote — Brazil
Published on 2026-09-30
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About this role
The Lead Engineer will oversee the AI Quality engineering team, focusing on building evaluation frameworks and improving the quality of AI systems at Circle. This involves hands-on development and team management to ensure the reliability and efficiency of AI agents used in the platform.
About the company
Circle is a technology company that provides a platform for building community-driven spaces, focusing on enabling creators and teams to engage and collaborate effectively. They offer tools for marketplace solutions, enhancing user experience through design and advanced technology.
The team
AI Quality engineering team
Stack
Ruby on RailsPython
What you'll do
- Build and own evaluation infrastructure
- Diagnose quality breakdowns
- Grow evaluation datasets
- Run structured experiments
- Lead the AI Quality engineering team
- Collaborate with AI Core engineering
What we're looking for
- 7+ years of experience in software production
- Experience with LLM-powered agents
- Proficiency in Ruby on Rails / Python
- Experience in ML/AI evaluation infrastructure
- Experience in designing datasets and annotation workflows
- Comfortable in a fast-paced, dynamic environment
- Strong English proficiency at C2 level
Benefits
- U.S.-benchmarked compensation
- Equity in the company
- 35 days of paid time off
- Twice a year company retreats