RL Deep Learning Engineer
Midpage is seeking an RL Deep Learning Engineer to build the first RL environments and benchmarks for long-horizon legal reasoning. This role involves designing and scaling systems to turn millions of court filings into verifiable evaluation and training tasks, working with attorneys and AI lab partners.
Midpage is the search engine for legal data used by AI labs. We cover all US court data - 20M records. Over 300 law firms use our platform directly, 200k+ visitors read cases on our site every month, and five multibillion-dollar companies including Perplexity trust us as their legal data supplier. We're a team of 7 in Bowery, lower Manhattan. Our ARR has grown from $400k to $2M in the last 4 months.
We're seeking an engineering generalist to build the first RL environments and benchmarks purpose-built for long-horizon legal reasoning—tasks where AI agents must search, read, analyze, and draft across real case filings, the same work that still takes teams of lawyers days to weeks. Frontier labs are will use these environments to make future models more legally capable and we need an engineer to own the infrastructure that makes it all work.
You'll design and scale the systems that turn millions of real court filings into verifiable evaluation environments and RL training tasks. You'll work directly with our attorneys, our data pipeline, and our partners at frontier AI labs.
Posted June 8, 2026