About Beacon AI
We’re a fast-moving team of aviators, engineers, and operators building an AI platform to make flying safer, more efficient, and more capable. Backed by top investors, we’ve secured a dozen Department of Defense contracts and partnered with major airlines to deliver mission-critical systems. We operate without silos or heavy processes. Small, focused teams own what they build, ship quickly, and learn fast, pushing the boundaries of how humans and AI work together in aviation.
You will ship LLM-powered product features end-to-end. That means designing retrieval and tool-calling flows, writing the services that run them, building evals and guardrails, and watching cost, latency, and quality in production. You’ll partner with the ML/infra teammates on embeddings, indexing, and model hosting, and with the product teammates on user experience and outcomes. We move fast, and we care about reliability in a safety-critical domain.
This role is for senior engineers who can own a feature or service end-to-end (5-8 years experience, including some in production ML/LLM systems).



You'll make independent architecture and eval decisions within your service's scope and partner directly with product and infra.
What you’ll do
Build user-facing LLM features
- Design and implement retrieval-augmented generation and tool-calling flows using frameworks like LangChain or equivalent primitives, where simpler is better.
- Deliver robust JSON and schema-bound outputs with validation, retries, and fallbacks.
- Add function calling to integrate with internal tools, search, routing, and data services.

Own the service layer
- Ship APIs and workers in Python or TypeScript with clear contracts, streaming, and backoff.
- Add caching, request shaping, prompt templates, and context packing to control latency and cost.
- Integrate with AWS Bedrock, OpenAI, Anthropic, or self-hosted endpoints as needed.

Retrieval and data prep
- Collaborate with infrastructure teammates to develop chu

📌 Senior Software Engineer, Artificial Intelligence/LLM (San Carlos)
🏢 Beacon AI
📍 San Carlos