Staff, Rust Engineer - Core Infrastructure

Sequen AI is leading the charge for building frontier ranking models for search and recommendations. Sequen AI's technology specializes in designing end-user behavior for large consumer enterprises. We are a small, highly technical team at an early stage, focused on turning recent advances in AI into systems that are reliable, useful, and capable in practice. The problems we are working on are often ambiguous, with meaningful real-world constraints and impact. If you are interested in building blistering fast, memory-safe backend architectures and shaping how frontier AI models serve production traffic at enterprise scale, we would like to meet you.

We are looking for a Core Systems Engineer with a deep mastery of Rust to design, build, and optimize Sequen’s underlying model serving infrastructure and real-time performance engines. This role sits at the absolute core of our technical strategy. You will be responsible for ensuring our frontier ranking and recommendation APIs process petabyte-scale data and compute complex inference logic with ultra-low latency. You will replace high-overhead bottlenecks with elegant, production-grade Rust systems, building a reliable foundation that scales alongside our rapid enterprise customer growth.