Remote Senior AI Engineer: Build & Scale Production LLMs

Ruby Labs Ltd; Georgia; À distance; USD 150 000 - 210 000; Plein temps

Avantages offerts par ce poste

Paid National Holidays

Flexible Independent Contractor</name>

Work from anywhere

Résumé du poste

Ruby Labs Ltd. is seeking a Senior AI Engineer to own and scale the AI layer of a core D2C subscription product.

You will own production LLM features, structured outputs, evaluation, observability, and model selection from experiment to live release, with a focus on quality, reliability and cost. Work in a modern TypeScript stack—Next.js, Cloudflare Workers, and containers—and drive end-to-end automation, from prompt systems to browser automation using LangChain, LlamaIndex, and OpenRouter-like

Qualifications

• 5+ years of software engineering with Node.js, TypeScript, Next.js and Postgres.
• Production experience with dynamic prompting and structured outputs.
• Experience with unified LLM APIs or AI gateways (OpenRouter, Cloudflare AI Gateway).
• Decides on benchmarks and trace data, not intuition.

Responsabilités

• Design dynamic prompt templates with conditional logic and context injection.
• Own LLM workflows and integrate into application logic.
• Build and maintain browser automation with Playwright and Browserbase Functions.
• Ship automations as versioned, reproducible workers and roll back safely.
• Build evaluation pipelines and AI gateway experiments from research to live production.
• Resolve production incidents in AI and automation systems with root-cause analysis.

Connaissances

Node.js

TypeScript

Next.js

Postgres

Browser automation

Playwright

Cloudflare Workers

LangChain

LlamaIndex

OpenRouter

Langfuse

A/B testing

LLM prompts

Outils

Browserbase Functions

Hono

Hatchet

Drizzle

Supabase Postgres

Description du poste

Ruby Labs Ltd. is seeking a Senior AI Engineer to own and scale the AI layer of a core D2C subscription product.

You will own production LLM features, structured outputs, evaluation, observability, and model selection from experiment to live release, with a focus on quality, reliability and cost. Work in a modern TypeScript stack—Next.js, Cloudflare Workers, and containers—and drive end-to-end automation, from prompt systems to browser automation using LangChain, LlamaIndex, and OpenRouter-like