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Research Engineer, Synthetic Data

CleraSan Francisco

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About the Role

This is a Research Engineer role focused on building synthetic data pipelines for AI agent training, sitting within a ~15-person engineering team of Olympiad medalists and published researchers. You'll design generation methods, validation systems, and quality metrics that directly expand model capabilities — work that sits at the frontier of RL-based AI alignment.

What You'll Do

  • Build end-to-end synthetic data pipelines that transform domain-specific workflows into structured, challenging training tasks for AI agents.
  • Collaborate with subject-matter experts to develop synthetic tasks spanning professional and technical domains.
  • Design task generation methods that produce diverse, realistic, and learnable training examples.
  • Build tooling to mutate, validate, and iteratively improve synthetic task quality.
  • Analyze model and agent performance on synthetic tasks to understand learning outcomes and failure modes.
  • Develop metrics to quantify synthetic task diversity, realism, learnability, and overall quality.

What We're Looking For

  • 2–4 years of experience in software engineering, ML engineering, or AI research roles delivering data pipelines, ML infrastructure, or synthetic data systems.
  • Hands-on experience applying synthetic data research methods to build end-to-end data generation pipelines for AI/ML applications.
  • Proficiency in Python and experience developing in Linux environments using containerization tools such as Docker.
  • Demonstrated understanding of synthetic data quality criteria and evaluation metrics — diversity, realism, learnability — and their inherent limitations.
  • Experience designing, implementing, or maintaining evaluation frameworks, benchmarks, or testing environments for AI agents or large language models.
  • Experience building automated systems to generate, validate, mutate, or process structured datasets at scale.
  • Track record of independently owning and delivering technical projects end-to-end with minimal predefined requirements.
  • Ability to detect edge cases, inconsistencies, and quality issues in synthetic or algorithmically generated datasets.
  • Comfort operating in unstructured, early-stage environments and reasoning from first principles.
  • Strong communication skills for effective remote collaboration across time zones.
  • Nice to have: Familiarity with reinforcement learning paradigms, agentic AI workflows, or LLM post-training pipelines.

Compensation & Benefits

Salary range: $150,000 – $250,000 USD annually. Visa sponsorship is available.

Location

On-site in San Francisco, CA, United States. Singapore-based candidates are also considered.

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