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Sentient Logo Sentient · IT - Software Development

Ai research - scientist/ engineer

· Job Posted February 21, 2026
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Job Description

As a Research Scientist/Engineer on the AI team at Sentient, you'll lead the development and implementation of techniques aimed at training language models and agents that have advanced reasoning capabilities: In particular, such AI will be able to make strategic decisions in multi-agent environments with high stakes (e.g., involving financial transactions), You'll work to develop novel post training and agentic techniques and to use these to demonstrably improve AI behavior.

Job Responsibility

  • Develop and implement novel fine-tuning and reinforcement learning techniques using synthetic data generated from multi-turn interactions
  • Use these to design agentic systems to improve reasoning skills to be evaluated on long-horizon strategic decision making benchmarks
  • Create and maintain evaluation frameworks to measure reasoning skills and design new benchmarks

Requirements

  • MS/PhD in Computer Science, ML, or related field, or equivalent experience
  • Strong programming skills, especially in Python
  • Experience with ML model training and experimentation
  • Track record of implementing ML research
  • Strong analytical skills for interpreting experimental results
  • Experience with ML metrics and evaluation frameworks
  • Excel at turning research ideas into working code
  • Can identify and resolve practical implementation challenges

Nice to have

  • Experience with language model fine-tuning and post-training
  • Background in AI agents and/or reasoning research
  • Published work in AI
  • Experience with synthetic data generation
  • Familiarity with techniques like RLHF and reward modeling
  • Track record of designing and implementing novel training approaches
  • Experience with model behavior evaluation and improvement
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