Member of Technical Staff, Pre-Training Data

Cohere; United States; À distance; USD 120 000 - 180 000; Plein temps

Avantages offerts par ce poste

Lunch stipend

Health and dental benefits

RRSP matching

Parental leave top-up

Enrichment benefits

6 weeks vacation

Travel budget

Home office stipend

Résumé du poste

Cohere is seeking a Machine Learning Engineer specialized in pretraining data to build and optimize data pipelines for language models. You will conduct ablations, design pre-training mixtures, and balance throughput with accelerator utilization to drive model performance.

You will bridge research and engineering, advancing data quality and scalable training practices across multilingual corpora and web data. Remote-friendly with Canada location requirements and global collaboration.

Qualifications

• Strong software engineering skills and Python experience.
• Familiarity with curriculum learning, data mixing and data attribution.
• Experience with data processing frameworks (Spark/Beam/Pandas).
• Work with large-scale datasets including web, code, multilingual corpora.
• Knowledge of data quality assessment techniques and data mixtures.
• Passion for bridging research and engineering in AI model training.

Responsabilités

• Conduct data ablations to assess data quality and test data mixtures.
• Develop data modeling techniques for training efficiency.
• Research data curation methods leveraging Cohere infrastructure.
• Collaborate with researchers and engineers to meet model demands.

Connaissances

Python

Curriculum learning

Data mixing

Data attribution

Apache Spark

Apache Beam

Pandas

Large-scale datasets

Web data

Code data

Multilingual corpora

Data quality assessment

Data mixtures

Bridging research

AI model training

Outils

Apache Spark

Apache Beam

Pandas

Description du poste

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!

Role Overview:

As a Machine Learning Engineer specializing in pretraining data, you will play a pivotal role in developing the data pipeline that underpins Cohere’s advanced language models. In this role, you will conduct data ablations to evaluate data quality and construct pre-training data mixtures to enhance model performance. By combining research and engineering, you will bridge the gap between raw data and cutting‑edge AI models, directly contributing to improvements in critical training metrics like throughput and accelerator utilization.

Your work will be essential to Cohere’s mission of delivering efficient and reliable language understanding and generation capabilities, driving innovation in natural language processing. If you are passionate about transforming data into the foundation of AI systems, this role offers a unique opportunity to make a meaningful impact.

Please Note: We have offices in London, Paris, Toronto, San Francisco and New York but also embrace being remote-friendly! There are no restrictions on where you can be located for this role between EST and EU.

Key Responsibilities:

• Conduct data ablations to assess data quality and experiment with data mixtures to enhance model performance.

• Develop robust data modeling techniques to ensure datasets are structured and formatted for optimal training efficiency.

• Research and implement innovative data curation methods, leveraging Cohere’s infrastructure to drive advancements in natural language processing.

• Collaborate with cross‑functional teams, including researchers and engineers, to ensure data pipelines meet the demands of cutting‑edge language models.

Qualifications:

• Strong software engineering skills, with proficiency in Python and experience building data pipelines.

• Familiarity with curriculum learning, data mixing and data attribution.

• Familiarity with data processing frameworks such as Apache Spark, Apache Beam, Pandas, or similar tools.

• Experience working with large‑scale datasets, including web data, code data, and multilingual corpora.

• Knowledge of data quality assessment techniques and experimentation with data mixtures.

• A passion for bridging research and engineering to solve complex data‑related challenges in AI model training.

Bonus: paper at top-tier venues (such as NeurIPS, ICML, ICLR, AIStats, MLSys, JMLR, AAAI, Nature, COLING, ACL, EMNLP).

Working Location:
This role can be based remotely or from one of our office locations listed on the job description - there is no minimum in‑office qualification requirement. We care most about hiring exceptional people regardless of locations, though please check the location listed on the posting for guidance around the core time zone or working hours alignment expected for the role.

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, 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.

This is a remote role. Applicants must be located in: Canada.