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Member of Technical Staff, Post-Training

Cohere· Modeling
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Hybrid (London), Hybrid (San Francisco), Hybrid (New York), Hybrid (Paris), Hybrid (Toronto), Hybrid (Montreal)CA$295k - CA$535kFull-timePosted 11mo ago

About the role

Role focused on advancing model post-training, shipping state-of-the-art models to production, and bridging research and production for Cohere’s foundation AI models.

Responsibilities

  • Design and write high-performant and scalable software for training models.
  • Consistently post-train the models to reach SOTA level performance.
  • Coordinate with other specialist teams (Agentic, Code…) to produce models that have strong all encompassing performance.
  • Craft and implement techniques to improve the performance and results of our training cycles both on the SFT and the RL regime.
  • Research, implement, and experiment with ideas on our supercompute and data infrastructure.
  • Learn from and work with the best researchers in the field.

Qualifications

  • Extremely strong software engineering skills.
  • Proficiency in Python and related ML frameworks such as JAX, Pytorch and XLA/MLIR.
  • Experience with distributed training infrastructures (Kubernetes, Slurm) and associated frameworks (Ray).
  • Experience using large-scale distributed training strategies.
  • Hands on experience on training large model at scale.
  • Hands on experience with the post training phase of model training, with a strong emphasis on performance optimisation.

Skills

Required:Software engineeringPythonML frameworksDistributed trainingLarge-scale trainingPost-training optimization

Benefits

  • A weekly lunch stipend of $75/£75 or equivalent in your local currency for lunch.
  • Full health and dental benefits, including a separate budget for mental health.
  • RRSP matching, 401K, Pension Scheme.
  • 100% Parental Leave top-up for up to 6 months, for either parent.
  • Annual enrichment benefits: Arts & culture, fitness/wellness, quality time, and a workspace improvement credit; Education & learning stipend for conferences, courses, and coaching.
  • 6 weeks of paid vacation (30 working days!).
  • Budget for traveling to other offices if you are remote, plus an annual company offsite.
  • Everyone receives a $500 home office stipend to set up your workspace properly.
Last updated Oct 21, 2026. Interested? Apply on the company site.
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About Cohere

Support automation that's actually intelligent

Cohere resolves 40-70% of support requests using AI, over all channels, within just a few days.

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