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Research Scientist, Post-Training

San Francisco, Amsterdam, London

About Model Shaping

The Model Shaping team at Together AI works on products and research for tailoring open foundation models to downstream applications. We build services that allow machine learning developers to choose the best models for their tasks and further improve these models using domain-specific data. In addition to that, we develop new methods for more efficient model training and evaluation, drawing inspiration from a broad spectrum of ideas across machine learning, natural language processing, and ML systems.

About the Role

As a Research Scientist in Post-Training, you will advance the methods for making foundation models more useful and reliable. You will analyze the limitations of current approaches to post-training across domains such as data curation, reinforcement learning, and model evaluation. Based on this analysis, you will design new techniques for model adaptation, as well as benchmarks for measuring the progress in the field.

After evaluating your ideas through experimentation, you will present your findings to the global scientific community at leading ML/NLP conferences and collaborate with your teammates to integrate those improvements into Together’s platform.

Responsibilities

  • Define and drive the research agenda around efficiency and performance of foundation model training
  • Study recent results from the broader AI research community, analyzing their relevance to the team’s research directions and ongoing projects
  • Conduct experiments to empirically validate your hypotheses and compare the outcomes with relevant related work
  • Share your findings both internally and externally (e.g., at top-tier conferences on ML and NLP)
  • Partner with Machine Learning Engineers to integrate advanced methods into Together’s Model Shaping platform

Requirements

  • Can autonomously design, implement, and validate your research ideas
  • Skilled at writing high-quality and efficient code in Python and PyTorch
  • Have first-author publications at leading conferences on ML or NLP (ICLR, ICML, NeurIPS, ACL, EMNLP)
  • Are a strong communicator, ready to both discuss your research plans with other scientists and explain them to broader audience
  • Follow the latest advances in relevant subfields of AI
  • Are passionate about seeing your research create real-world impact through Together AI's services and willing to work hands-on with production systems to achieve it

Stand-out experience:

  • Reinforcement learning of language models
  • Curation of pre-training or post-training datasets and benchmarks
  • Robust evaluation of foundation models
  • Running large-scale experiments on GPU clusters

About Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancements such as FlashAttention, RedPajama, SWARM Parallelism, and SpecExec. We invite you to join a passionate group of researchers in our journey in building the next generation AI infrastructure.

Compensation

We offer competitive compensation, startup equity, health insurance, and other benefits, as well as flexibility in terms of remote work. The US base salary range for this full-time position is $225,000 - $300,000. Our salary ranges are determined by location, level and role. Individual compensation will be determined by experience, skills, and job-related knowledge.

Equal Opportunity

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

Please see our privacy policy at https://www.together.ai/privacy

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