Senior Full-Stack Software Engineer, AI Core
New
C
CircleAI Platform
We’re proud to be a fully remote company of around 270 (and growing!) team members from 30+ countries around the world., Collaborate across time zonesFull-TimeSenior
Salary$130K - $140K; $130K – $140K • Offers Equity; Annual cash compensation (USD), paid semi-monthly: $130K – $140K • Offers Equity
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Job Details
- Languages
- You are proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5.
- Experience
- 6+ years
- Required Skills
- PostgreSQLArtificial IntelligenceFull Stack DevelopmentMySQLRuby on RailsReactA/B testingLLM
Requirements
- 6+ years experience working as a full-stack engineer on high-traffic production applications.
- Strong proficiency in Ruby on Rails, MySQL / Postgresql, and ReactJS.
- Hands-on experience building AI features in production, such as RAG systems, AI agents, or LLM-powered tools.
- Proven experience shipping at least one real AI use case in production.
- Strong experimentation mindset with experience designing and running A/B tests and measuring results.
- Comfort working in a fast-paced environment with ambiguity.
- Demonstrated ability to collaborate effectively as part of a dynamic, autonomous team.
- Proficiency in English at a CEFR Level C2 / ILR Level 5.
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 (including A/B tests, AI evaluations, or others) to validate AI features, measure impact, and guide iteration.
- Build and integrate components for AI infrastructure and optimize them for performance and reliability to support production-level inferencing.
- Improve processes, tools, and systems to scale AI features into production-ready solutions.
- Help the team stay up-to-date with cutting-edge AI research, techniques, and tools.
- Work closely with Circle's leaders and designers throughout the feature design process.
- Foster a bias for action by prioritizing speed of iteration, experimentation, and learning.
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