Software Engineer - Search Ranking

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. The X Search team is responsible for building and operating the core search engine that powers discovery on X. We own the full end-to-end search stack — from real-time retrieval and indexing to ranking and the end-user search experience. Our goal is to create the most relevant, fast, and intelligent search experience on the internet by combining state-of-the-art information retrieval systems with Grok’s reasoning capabilities.

Responsibilities

Build search and retrieval algorithms that scale to millions of users; Build and operate large scale search engine and search infrastructure; Train state of the art ML ranking models; Integrate Grok in search systems and products

Requirements

Tech Stack: Python, Go, Rust; Have worked with vector databases, search indices, or similar data stores for search applications; Have worked on large-scale search systems; Have deep experience building or working with production ML systems; Take full ownership of problems and learn whatever you need to solve them; Can move quickly in a fast-paced environment with shifting priorities and tight deadlines; Strong work ethic and prioritization skills; Strong communication skills

Benefits

equity; comprehensive medical coverage; vision coverage; dental coverage; 401(k) retirement plan; short & long-term disability insurance; life insurance; discounts and perks