Cohere
Senior Member of Technical Staff, Web Data
$250K–$535K
Toronto +3 · Remote · Staff · Full-time · Posted Jun 1, 2026
- Location
- Toronto
Europe
London
New York
About the job
Build and maintain large-scale web-data pipelines that turn raw internet data into high-quality pretraining corpora for language models.
What you'll do
- Maintain pipelines for processing web corpora, including extraction, parsing, filtering, and deduplication.
- Develop filtering and quality-scoring systems and analyze data composition across domains, languages, and time periods.
- Collaborate with research, engineering, data, and evaluation teams to improve training corpora and assess their effects on model performance.
What they ask for
- Strong software engineering skills, proficiency in Python, and experience building data pipelines.
- Familiarity with data processing frameworks such as Apache Spark, Apache Beam, Pandas, or similar tools.
- Experience working with large-scale web datasets.
- Knowledge of data quality assessment techniques and experimentation with data mixtures.
Nice to have
- Paper at a top-tier venue, such as NeurIPS, ICML, ICLR, AIStats, MLSys, JMLR, AAAI, Nature, COLING, ACL, or EMNLP.
Pay
CA$250K – CA$535K (currency code not stated; compensation type not specified)
Tools
Python, Apache Spark, Apache Beam, Pandas
AI focus
Prepare and analyze web data for language-model pretraining, including studying its impact on downstream model performance.
Model-written summary · the original posting is authoritative