Senior Software Engineer, Infrastructure

About this role This dynamic company is helping push the frontier of LLMs and AI Agents through novel datasets and experimentation. They work on building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows. They work with all 5 of the leading AI labs and are becoming the go-to partner for data infrastructure for YC companies. They have a sharp hockey stick growth rate and are extremely talent-dense, with most of our founding team coming from top IB and quant firms. What we're looking for: We are seeking a Senior Software Engineer with 6-10 years of experience in building and maintaining core infrastructure for a rapidly growing tech company. You should be comfortable architecting and developing shared infrastructure, mentoring junior engineers, and have a track record of building scalable, reliable, and high-throughput systems. Bonus points if you have experience in the human-in-the-loop data space or at a high-growth startup. Wha...

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