Jobs · Business Development · California

AI Prompt & Agent Developer

OpenCall.ai (YC W24) · San Francisco, CA · 2 mo ago
On-siteBusiness Development$90k–$145k/yrFull-time

Responsibilities

  • Write and maintain the prompts that run in production.
  • Ship iteratively against real call data.
  • Build evaluation harnesses.
  • Human-in-the-loop onboarding.
  • QA and continuous improvement.

Requirements

  • 2+ years of experience with AI/ML, NLP, or prompt engineering in production
  • Strong analytical and problem-solving mindset; comfort with ambiguity
  • Excellent written and verbal communication skills
  • Bachelor's degree and/or extensive experience in one or more of: Computer Science, Engineering, Math, Philosophy, Linguistics, Cognitive Science, English, Medicine, or a related field
  • Python chops beyond reading: APIs, data pipelines, testing frameworks
  • Prior work with voice AI, TTS, ASR, or telephony platforms (Twilio, etc.)
  • Contact center, SaaS, or customer-facing tech background
  • Healthcare or medical operations experience — you know what an NPI is, you've worked a front desk, you understand the weird chaos of dental scheduling
  • Automated prompt optimization experience (DSPy, GEPA, MIPROv2)
  • Fine-tuning experience

Qualifications

Comfort with code. You don't need to be a senior engineer, but you should read Python fluently and TypeScript comfortably, and you can get almost any coding task done by pairing with modern AI coding tools.

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