Senior Full Stack / Rails Engineer (AI Product Focus)

Role Summary

• •Join a core engineering team of 5 focused on building and scaling large Ruby on Rails applications with AI integration.
• •Lead backend-heavy projects including performance optimization, reliability, and maintainability of Rails APIs and PostgreSQL databases.
• •Work across the full product lifecycle: feature development, A/B testing, model integration, and AI agent pipelines.
• •Collaborate closely with founders and engineers to define product requirements and deliver high-quality, fast iterations.
• •Contribute to both backend and frontend (Next.js/React) development, focusing on AI-driven product innovation and user experience.

About the Company

• •The company operates in the AI product space, emphasizing cutting-edge LLM and automation technologies.
• •Values high-velocity iteration, product quality, and user value in a fast-moving startup environment.
• •Small, tight-knit team culture with about 5 core engineers, fostering close collaboration and ownership.
• •Focuses on building scalable platforms and AI systems that impact thousands of users directly.
• •Encourages experimentation and navigating ambiguity, reflecting a culture of innovation and pragmatism.

What You Should Know

• •Ideal for engineers with 5–10+ years of Rails experience who thrive in fast-paced, high-ownership roles.
• •Requires comfort working with non-deterministic AI systems and integrating LLMs into production workflows.
• •Opportunity to work at the intersection of backend engineering, AI, and product iteration with direct user impact.
• •Expect a hands-on role involving backend, frontend, and AI system architecture responsibilities.
• •Candidates should be pragmatic, able to make thoughtful trade-offs balancing speed and quality.

Key Required Skills