Mid-Level AI Engineer

Job Description

Job Description

About the Role

Join an early-stage commerce-focused SaaS company as an AI Engineer owning the production AI layer of its product. You will build and improve systems used by merchants, make key architecture decisions, and help the team ship reliable AI features.

• Build end-to-end AI systems, including prompts, retrieval, tool use, agent orchestration, and fine-tuning when it is useful.
• Create evaluation systems that test model changes and catch regressions before release.
• Improve latency and operating costs so AI features perform reliably at merchant scale.
• Turn ambiguous product needs into solutions by identifying whether the issue is with the model, data, or user experience.
• Ship to production regularly and monitor how features perform with real users.

• Two to four years of experience building production LLM systems, with strong hands-on Python skills.
• Experience shipping an AI or ML system to real production users, rather than only building research prototypes or internal demos.
• Experience building LLM evaluation systems that have identified regressions.
• A computer science degree or equivalent strong computer science fundamentals.
• Experience in contract or freelance work, and at a startup, preferably one that has reached a growth stage.
• A track record of strong engineering, demonstrated through work experience, open-source contributions, papers, or side projects.
• Familiarity with ML or fine-tuning, and ideally commerce, Shopify, or marketplace products.
• Experience with Python, LLMs, React, TypeScript, and Node.js.

Base salary is $150,000 to $250,000 USD annually. Visa sponsorship is not available.

This is an on-site role in San Francisco, United States.