Member of Technical Staff Training Performance Engineer
Cohere
Remote
Canada, United Kingdom, United States, France
staff
February 27, 2026
$100-350k
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Job Description
Who are we?
Cohere is the leading security-first enterprise AI company.
We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems.
We’re training and deploying frontier models for enterprises who are building AI systems.
We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that.
We obsess over what we build.
Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers.
Cohere is a team of researchers engineers designers and more who are all passionate about their craft.
We are a global technology company headquartered in Toronto with key offices in London New York City San Francisco Montreal Paris Berlin and Seoul.
Join us!
Why this role?
As a Performance Engineer in the Pre-Training team you will be responsible for optimizing the performance of our advanced language models and systems.
Their primary focus is on improving key model training metrics such as training throughput ensuring high accelerator utilization.
The team combines expertise in software engineering machine learning and low-level kernel design and development to design robust systems and enhance model performance.
You will work on identifying and removing performance bottlenecks develop cutting-edge training and profiling tools to help Cohere's mission of providing efficient and reliable language understanding and generation capabilities and drive innovation in the field of natural language processing.
Note: We have offices in London Toronto New York and San Francisco but we’re also remote-friendly!
This team operates primarily between ET to CET time zones so we’re seeking candidates in locations that align with these hours for effective collaboration.
As a Member of Technical Staff you will: - Design and write high-performant and scalable software for training. - Understand architectural modifications and design choices and their effects on training throughput and quality. - Write low-level CUDA triton kernels to squeeze every last bit of performance from our accelerators. - Research implement and experiment with ideas on our supercompute and data infrastructure. - Learn from and work with the best researchers in the field.
You may be a good fit if you have: - Extremely strong software engineering skills. - Proficiency in Python and related ML frameworks such as JAX Pytorch and XLA/MLIR. - Experience writing kernels for GPUs using CUDA triton etc - Experience using large-scale distributed training strategies. - Familiarity with autoregressive sequence models such as Transformers.
Bonus: paper at top-tier venues (such as NeurIPS ICML ICLR AIStats MLSys JMLR AAAI Nature COLING ACL EMNLP).
FULL-TIME EMPLOYEES AT COHERE ENJOY THESE PERKS: - 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.
HOW AND WHERE WE WORK: - Cohere is remote-friendly but we also have offices in Toronto London New York City San Francisco Montreal Paris Berlin and Seoul with more opening soon. - For those in the office: a daily lunch program plenty of snacks and regular community and social events. - For those not near an office: a co-working benefit so you can work alongside others in your city. - Everyone receives a $500 home office stipend to set up your workspace properly.
If any of the above doesn’t line up exactly with your experience we still encourage you to apply.
We strive to create an inclusive work environment for all; we welcome applicants from all backgrounds and are committed to providing equal opportunities.
Should you require any accommodations during the recruitment process please submit an Accommodations Request Form https://docs.google.com/forms/d/12a6IrLdF3kI2nonKSr4tiFuz18rLQbaeYV-JM9L4o9Q/edit and we will work together to meet your needs.
We may use AI-enabled tools to screen and assess applicants against the criteria for this position.
This helps our recruiters identify potentially qualified candidates but it doesn't limit the applications our recruiters may review or consider.
Beware of Scams: Cohere will never ask for payment or third-party services (e.g.
CV writing) as part of our hiring process.
All legitimate roles are listed on the Cohere careers page and LinkedIn only with all communications from Cohere employees coming from an @cohere.com or @cw.cohere email alias.
If jobs are viewed on other sites then please verify these through our official careers https://cohere.com/careers page.
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