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Research Engineer - Data Quality

Job in Menlo Park, San Mateo County, California, 94029, USA
Listing for: Character.ai
Full Time position
Listed on 2026-06-18
Job specializations:
  • IT/Tech
    Data Scientist, Data Analyst, Data Engineering
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below

About the role

As a passionate data miner, you wield big data tools and visualization software to line up research developments. You love uncovering interesting subsets of data, creating clear dashboards to communicate your findings, and proposing ideas for unexplored opportunities. You are also extremely interested in learning how to support large language model development with unparalleled data quality and performance insights.

Responsibilities
  • Curate, mine, and analyze datasets for LLMs
  • Work with our Product org to identify datasets needed for specific user experiences
  • Help maintain and improve core tables in our data lake used for research across the company
  • Data is the lifeblood of AI. Alongside the data platform team, you will be responsible for making sure this vital resource is available, understood, and of the highest quality.
Required Experience
  • 5+ years of experience
  • Familiarity with Machine Learning and NLP and willingness to learn more on the job
  • Experience mining text and graphical data
  • Data visualization skills
  • SQL wizardry
  • Spark experience
  • Passionate about Conversational AI or large language models
Additional Desired Experience
  • Experience with cloud platforms like GCP
  • Experience with Kubernetes
  • Experience training your own LLMs

You will be a good fit if you are proactive and have a “get things done” mindset. Given our current pace of growth and load on our systems, most people have had a significant impact during their first week at the company.

Join our visionary team, on-site 3-5 days a week, at the forefront of next-generation AGI.

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