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Research Engineer, Domain Scaling

Menlo Ventures Portfolio

New York, NY · full time

$350,000 – $850,000

Listed on Menlo Ventures Portfolio’s own careers site. You apply with them directly — we never stand between you and the employer.

What this role is

Research engineer role focused on making Claude excel at domain-specific knowledge work in finance, healthcare, and legal. Combines applied AI research with hands-on data strategy, requiring experience with large language model fine-tuning, reinforcement learning, and managing technical vendor relationships.

Our summary, not Menlo Ventures Portfolio’s wording. The full posting is on their site.

Skills this role names

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What they ask for

Required

  • Fine-tuning large language models for specific domains
  • Experience with reinforcement learning or reward design for LLMs
  • Ability to manage technical vendor relationships
  • Comfortable reviewing datasets to identify quality issues
  • Strong cross-functional collaboration skills
  • Bachelor's degree or equivalent education and experience

Nice to have

  • Experience training production ML systems
  • Experience designing evals or benchmarks for LLMs
  • Domain expertise in finance, healthcare, or legal sectors
  • Experience working with external vendors or technical partners

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