AI Researcher — Training Optimization

About the Role
We’re looking for an AI Researcher focused on training optimization to help us push the efficiency, stability, and scalability of large-scale model training. You’ll work at the intersection of research and systems, developing novel techniques to reduce training cost, accelerate convergence, and improve model quality—while validating ideas through rigorous experiments and publications.
This role is ideal for someone who enjoys turning research insights into practical training wins, and who has a track record (or strong ambition) of publishing applied ML research.

What You’ll Work On
Design and evaluate training optimization techniques for large models (e.g. optimization algorithms, schedulers, normalization, curriculum strategies)

Improve training efficiency and stability across long runs and large datasets

Research and implement methods such as:
Optimizer and scheduler innovations

Mixed-precision, low-precision, and memory-efficient training

Gradient noise reduction, scaling laws, and convergence analysis

Training-time regularization and robustness techniques

Run large-scale experiments, analyze results, and translate findings into actionable improvements

Author or co-author research papers, technical reports, or blog posts

Collaborate closely with infrastructure and inference teams to ensure training decisions translate to real-world performance

What We’re Looking For
Strong background in machine learning research, with emphasis on training dynamics and optimization

Experience training large neural networks (LLMs, multimodal models, or large sequence models)

Publication experience in ML venues (e.g. NeurIPS, ICML, ICLR, ACL, EMNLP, COLM, arXiv) or equivalent high-quality open research

Solid understanding of:
Optimization theory and practice

Backpropagation, gradient flow, and training stability

Distributed and large-batch training

Proficiency in Python and modern ML frameworks (PyTorch preferred)

Ability to independently design experiments and reason from data

Nice to Have
Experience with non-standard architectures (e.g. RNN variants, long-context models, hybrid systems)

Experience optimizing training on GPUs at scale (FSDP, ZeRO, custom kernels)

Contributions to open-source ML or research codebases

Comfort operating in fast-moving, ambiguous startup environments

Why This Role
Real influence over core model training decisions

Freedom to pursue and publish novel research

Direct access to large-scale experiments and real production constraints

A small, senior team that values thinking deeply and shipping thoughtfully