Research Engineer, Applied Research is open at Sierra in San Francisco, CA. The posting gives no salary; similar roles in the United States advertise a median of $194K. Posted on Oct 5, 2026, and still on Sierra’s careers page when we last checked, on Nov 14, 2026.
About the role
Tackle unsolved applied AI and ML problems. Pushing the boundaries of post-training, voice AI, and long-horizon task execution, building agents that can reason, adapt, and reliably carry out complex tasks for customers. - Determine when to build specialized models and when to use externally provided frontier intelligence, balancing quality, speed, and cost to deliver customer value. - Turn ambiguous product and…
The opening lines of the posting. The rest is on Sierra’s careers page.
Hiring at Sierra
Sierra has 198 open roles right now, 21 of them remote. Most are in Engineering, Sales & Business Development and Product. The median advertised salary across its roles with a published range is $285K. See all its roles
