Senior AI Engineer
Core
Own and scale the AI layer of a core D2C subscription product, including production LLM features and browser automation.
Role type
Senior AI Engineer (LLM & Browser Automation)
Builds
Production LLM features, browser automation workers, evaluation pipelines, and AI gateways.
Domain
Consumer tech, D2C subscriptions, LLMs, browser automation
Deliverable
production ML models
Required skills
TypeScript, Node.js, Next.js, Postgres, Cloudflare Workers, Playwright, dynamic prompting, structured outputs (JSON mode, function calling), LLM APIs/gateways, LLM observability, evaluation methodology
Preferred skills
LangChain, LlamaIndex, RAGAS, LLM-as-a-judge, fine-tuning
Technologies
Next.js, Cloudflare Workers, Containers, Hono, Hatchet, Drizzle, Supabase Postgres, Vercel Blob, Browserbase, Playwright, Langfuse, OpenRouter, Cloudflare AI Gateway
Responsibilities
Design dynamic prompt templates with conditional logic and context injection; Enforce predictable outputs with JSON mode, function calling, and validators; Build and maintain browser automation on Browserbase and Playwright; Build evaluation pipelines with test datasets and LLM-as-a-judge; Trace complex LLM chains to find bottlenecks; Take AI features from experiment to live production; Manage rate limits, fallbacks, and model cost; Resolve production incidents with root-cause analysis
Seniority
Senior, hands-on IC
