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Fruition Executive Search

Applied AI Engineer

Posted 14 Days Ago
In-Office
San Francisco, CA, USA
Mid level
In-Office
San Francisco, CA, USA
Mid level
Build and ship production infrastructure for reliable AI agents handling complex, multi-step tasks. Responsibilities include agent execution, retrieval and memory systems, evaluation harnesses, production improvements, customer collaboration, orchestration, and hiring. The role requires owning the full development cycle and improving agent performance using real-world feedback.
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Applied AI Engineer


San Francisco, CA · On-site · Full-time
Relocation and visa sponsorship available

We’re building AI agents that work reliably in production—not just in demos. As our Applied AI Engineer, you’ll own the infrastructure that helps agents handle complex tasks, retain useful context, and know when to bring in a human.

You’ll ship to production in your first week and help shape how our agents plan, remember, fail, and recover.

What you’ll do
  • Build infrastructure for reliable agent execution across long, multi-step tasks.
  • Design retrieval and memory systems that make messy operational data useful over time.
  • Develop evaluation harnesses teams can trust when deciding what’s ready to ship.
  • Improve production systems through the full cycle: build, measure, test, fix, and learn.
  • Work with customers and use real-world feedback to strengthen agent performance.
  • Take ownership across infrastructure, orchestration, customer collaboration, and hiring.

Requirements
What we’re looking for
  • 3+ years of relevant experience building and shipping production AI systems.
  • Strong Python skills and hands-on experience with agent orchestration.
  • Experience building retrieval and memory 

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