Opportunity brief
Lexsi is hiring for the Role of AI Research Scientist!
Responsibilities of the Candidate:
- Conduct foundational research on multi-agent reinforcement learning, agent exploration, continual learning, and scalable alignment strategies.
- Design and evaluate algorithms that improve the learning efficiency, coordination, and controllability of large AI systems.
- Develop methods for interpreting and analyzing internal model behavior, including representation analysis, circuit discovery, and causal reasoning tools.
- Investigate alignment techniques such as reward modeling, safety fine-tuning, pruning, unlearning, and training-time behavioral control.
- Explore information-theoretic and causal approaches for understanding how models represent knowledge and make decisions.
- Build research infrastructure and experimental frameworks for RL training, alignment experiments, and large-scale evaluation.
- Publish research in leading venues and contribute to open-source tools and alignment research infrastructure.
Requirements:
- PhD or Masters or equivalent research experience in Machine Learning, Artificial Intelligence, Computer Science, Mathematics, Physics, or related fields.
- Strong background in reinforcement learning, multi-agent systems, large language models, interpretability, deep learning theory, or information-theoretic ML.
- Proven ability to conduct independent research and publish in top-tier AI conferences such as NeurIPS, ICML, ICLR, ACL, CVPR, or AAAI.
- Hands-on experience training and experimenting with models using frameworks such as PyTorch, JAX, or TensorFlow.
- Strong programming and experimentation skills in Python and modern ML research tooling.
- Demonstrated interest in AI alignment, safety, interpretability, or trustworthy AI systems.