Senior Full-stack Engineer, Applied AI

Circle.so is revolutionizing the online community platform space by building an all-in-one solution that enables creators, coaches, educators, and businesses to bring their audiences together. As a fully remote company with 180+ team members across 30+ countries, they're seeking a Senior Full-stack Engineer to join their Applied AI team.

The role combines traditional full-stack engineering with cutting-edge AI development, focusing on implementing real-world applications of large language models (LLMs). The ideal candidate will have 5+ years of full-stack experience and strong proficiency in both web development technologies (Ruby on Rails, MySQL/PostgreSQL, ReactJS) and AI-focused programming languages (Python, JavaScript, TypeScript).

Key responsibilities include shipping end-to-end AI projects such as AI Agents and Retrieval-Augmented Generation (RAG), architecting AI solutions, and optimizing AI infrastructure. The position requires hands-on experience with modern AI frameworks (OpenAI, Anthropic, Hugging Face) and a deep understanding of NLP, ML, and LLM fundamentals.

Circle.so offers an attractive compensation package ranging from $130,000 to $140,000 USD annually, plus equity. The company provides comprehensive benefits including 35 days PTO, medical coverage, parental leave, and unique perks like bi-annual company retreats in locations worldwide. Their culture emphasizes autonomy, trust, and outcome-focused work, making it an ideal environment for self-driven professionals who want to make a significant impact in the AI and community platform space.

The company strongly values diversity and inclusion, offering US-benchmarked compensation regardless of location and actively seeking candidates from underrepresented backgrounds. This role presents an exceptional opportunity to work at the intersection of community building and artificial intelligence while enjoying the flexibility of remote work and the benefits of a growing, innovative company.