About Us

Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we’re always looking for passionate individuals to join us. Learn more about our story at:
About The Role
At Ruby Labs we are looking for a Senior AI Engineer to own and drive the quality, reliability, and evolution of our AI systems in production.
This is a high-ownership role. You will be responsible for end-to-end delivery of major AI features, production stability of AI systems, and data-driven experimentation using tools like Langfuse, Mixpanel and OpenRouter. You’ll work in a modern stack built on Next.js, TypeScript, Node.js, and Redis, collaborating closely with product, growth, data, and billing teams. Increasingly, this includes building agentic, tool-using AI systems — defining clean tool contracts (including MCP-based tools)



and orchestrating how AI interacts with internal services and business systems.
Our engineering organization uses a squad-based structure. You will operate within an AI engineering squad, contributing as a senior technical voice and driving engineering quality within your area of the product.
Key Responsibilities
- Take complete ownership and deliver major AI engineering features within agreed timelines.
- Own AI output quality, structure, and predictability across all user-facing AI interactions.
- Design, implement, and maintain output-type-based AI systems, including segmentation, routing, and enforcement.
- Ensure consistent output structure and formatting across different LLMs for the same request type.
- Integrate and orchestrate multiple LLM providers via OpenRouter, managing model selection, fallback strategies, and cost optimisations.
- Design and orchestrate tool-using and agentic AI workflows, defining clean tool contracts (including MCP-based tools)

📌 Senior AI Software Engineer (Italia)
🏢 Able
📍 Italia