Sunset is a free estate settlement platform for families. Find, claim, and close every account, asset, and debt the deceased left behind. Start today. Backed by Y Combinator.
About the role
This is a production product-engineering role for someone who has shipped and operated LLM-backed software—not a prompt-engineering, research, or company-wide AI strategy position.
More about this role
At its core, Replay was founded to help founders. We started by supporting startups through shutting down, but we have since expanded into unlocking a new revenue stream for all types of businesses.
In 2025, we had a unique insight: the data every company generates each day through collaboration, communication, and building is some of the most valuable training data in the world. Public and synthetic data can only get frontier models so far, so the next generation of model progress depends on real, proprietary data grounded in how actual businesses operate. We are a primary source of it, partnering directly with the frontier AI labs building what comes next.
We have scaled from $0 to a multi-eight-figure run rate in a matter of months
We have raised from top-tier investors, including Floodgate, Afore, Ludlow, and Hustle Fund
We are small enough that you will carry outsized responsibility and grow as quickly as the company does
You will partner with and build for some of the fastest and most important companies in the world
You will help build a massive, category-defining business from the ground floor
This is a production product-engineering role for someone who has shipped and...
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