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Lead Prompt Engineer: Strategic LLM Migration

Lead Prompt Engineer: Strategic LLM Migration

Welo Data

Charleston, WV • Remote

$94K - $124K/yr

Part-time

Posted yesterday

Job description

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.

Working at Welo Data

What to expect from working at Welo Data

From Welo Data

About Welo Data, in their own words

From Welo Data

Welo Data is a global AI data services company powering the next generation of AI. We build, annotate, and validate the training datasets that make AI models accurate, safe, and ready for the real world — across languages, cultures, and domains.

Our team of experts spans the globe, combining deep technical knowledge with a human-centered approach. If you want your work to shape how AI understands the world, you'll find your place here.

Diversity and inclusion statement

From Welo Data

Our Strength is derived from Winning Together. Welo Data is unequivocally committed to developing and fostering a workplace and organizational culture that values the diversity of thought and perspective delivered by a diverse global workforce operating within an inclusive organization.