Lead Prompt Engineer: Strategic LLM Migration

Are you a veteran of the AI landscape with a Doctorate or Master's and a track record of shaping LLM performance? Welo Data is seeking a Lead Prompt Engineer to spearhead the technical migration of template architectures into state-of-the-art LLM autoraters.

This is a high-stakes leadership role. You will not only engineer complex prompts but also guide a specialized team, drive the migration strategy, and certify the launch readiness of our next‑generation AI solutions.

The Mission: Leading the AI Evolution

• Strategic Oversight: Manage the full end‑to‑end technical migration workflow, ensuring a seamless transition from human‑rated templates to automated LLM systems.
• Team Mentorship: Guide a team of engineers through the complexities of parent‑child template clusters and automated optimization.
• Advanced Optimization: Direct the use of APG and APO tools, providing the high‑level intervention needed when automated systems reach plateaus.
• Launch Certification: Take final responsibility for accuracy metrics, running prompt versions against gold data to verify $F_1$ scores, precision, and recall.
• Edge‑Case Resolution: Architect manual prompt strategies to solve the most difficult "anti-patterns" in legacy architectures.

Project Details

• Schedule: Part‑Time (Flexible hours within project milestones)
• Location: 100% Remote (Must be based in the United States)
• Employment Type: Freelance / Independent Contractor
• Duration: Long‑term technical migration project

The Executive Profile

• Elite Expertise: At least 7 years of experience as a Prompt Engineer with a proven history of tuning LLMs for structured outputs and complex classification.
• Advanced Academic Background: Master’s or Doctorate (PhD) in Computer Science, Computational Linguistics, HCI, or a related analytical field.
• Data Mastery: Strong proficiency in SQL and deep‑dive error pattern analysis to monitor and enhance model performance.
• Technical Agility: Expert‑level ability to master proprietary tools and enterprise‑grade interfaces like the Goose API .
• Leadership Excellence: A natural mentor with the verbal and written communication skills required to justify technical launches to stakeholders.

Preferred High‑Level Skills

• Experience in software engineering or AI model evaluation at an enterprise scale.
• Deep linguistic expertise, specifically in semantics and formal logic.
• Hands‑on experience with Chain‑of‑Thought (CoT) and shadowbot disagreement tracking.