Prompt Engineer Job ID 2026-1581

Internet BrandsEl Segundo, CA
Onsite

About The Position

We're looking for a skilled Prompt Engineer to join our AI team and shape how our products communicate with large language models. You'll sit at the intersection of linguistics, engineering, and product — crafting the instructions that make AI genuinely useful. You have a genuinely curious, inventive mindset — you explore model behavior with a habit of probing edge cases, questioning assumptions, and regularly surfacing insights the team didn't know to look for. As a Prompt Engineer, you will design, test, and iterate on prompts that drive our AI-powered products. Working alongside product managers, engineers, and designers, you'll be responsible for the quality, consistency, and safety of all LLM outputs — from customer-facing features to internal automation pipelines.

Requirements

  • 2+ years of hands-on experience in prompt engineering or a closely related AI/NLP role with significant focus on working with LLMS and Generative AI; demonstrated expertise in prompt engineering
  • Hands-on experience with tool-calling patterns, function routing, and structured output formatting in the context of agent orchestration
  • Systematic testing and experimentation methodologies and iteration
  • Creative problem-solving to find innovative solutions using AI
  • Understanding of token economics, context windows, and model limitations
  • Strong written communication skills — clarity and precision are your superpowers
  • Ability to document processes and communicate technical findings to non-technical stakeholders
  • Comfortable working in-office five days a week in a fast-paced, collaborative environment

Nice To Haves

  • Prior work in a product-led or SaaS environment
  • Experience collaborating with clinicians, medical writers, or editorial teams in a publishing setting, translating domain expertise into precise, compliant LLM instructions

Responsibilities

  • Partner with product, engineering, and design to rapidly prototype and iterate on prompts for production LLM applications across diverse use cases.
  • Turn around prompt revisions within tight cycles, maintaining quality without sacrificing speed
  • Test and iterate on prompts systematically to improve accuracy, consistency, speed and output quality
  • Build prompt templates and libraries that enable reusable, scalable AI solutions across the organization
  • Document prompt patterns, techniques, and findings for team knowledge sharing
  • Evaluate AI model outputs against quality criteria and implement improvement strategies
  • Collaborate with engineers to integrate prompts into scalable, reliable pipelines
  • Monitor model behaviour post-deployment, implement versioning and A/B testing strategies and respond to regressions or edge cases
  • Research emerging prompting techniques and apply them
  • Contribute to red-teaming and safety reviews to identify risks in LLM outputs

Benefits

  • health insurance options such as medical, dental, and vision coverage
  • flexible spending accounts (FSA) for medical and dependent care
  • short-term and long-term disability insurance
  • life and AD&D insurance
  • 401(k) retirement savings plan with a company match
  • paid time off (PTO)
  • paid holidays
  • commuter benefits
  • access to our Employee Assistance Program (EAP)
  • well-being coaching services
  • voluntary benefits such as home, auto and pet insurance
  • discounted legal and financial services
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