Research Engineer

hud (YC W25)

Research Engineer developing quality assurance processes for training data at frontier AI infrastructure startup. Collaborating with data vendors and building scalable systems for QA management.

Posted 6/5/2026full-timeSan Francisco • California • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

DockerLinuxPython

About the role

Key responsibilities & impact

Define and enforce quality standards for training data
Build tooling and workflows to audit supplier-generated datasets, including sampling strategies, validation pipelines (rule-based and model-assisted), and feedback loops
Determine if and how human-in-the-loop review workflows can be used to optimize QA
Partner with data vendors to debug quality issues, provide actionable feedback, and improve their data generation processes
Continuously integrate QA learnings into infrastructure tools and data vendor portal to reduce anomalies, inconsistencies, and edge cases

Requirements

What you’ll need

Proficiency in Python, Docker, and Linux environments
Worked with large-scale datasets
Evidence of rapid learning and adaptability in technical environments (e.g., programming competitions)
Startup experience in early-stage technology companies with ability to work independently in fast-paced environments
Familiarity with current AI tools and LLM capabilities
Strong communication skills for remote collaboration across time zones
Understand of common failure modes in training data
Have experience building data validation pipelines and/or human-in-the-loop review systems
Be detail-oriented and able to spot subtle inconsistencies or edge cases in data
Be comfortable designing metrics, experiments, and QA processes, not just executing them

Benefits

Comp & perks

Competitive compensation
100% covered top-of-the-line medical, dental, and vision from Blue Shield of CA
Lunch and dinner when you’re in the office
Company-wide holiday break (Christmas Eve to New Year’s Day) on top of PTO and paid holidays
Other perks including an Equinox membership, 401k, and commuter benefits
Unlimited* access to tokens for ChatGPT, Claude Code, Cursor, etc. **By unlimited, we mean no one on our token usage leaderboard has ever hit a limit. So we have no idea what the limit is.*

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonDockerLinuxdata validation pipelineshuman-in-the-loop review systemslarge-scale datasetsmetrics designexperiments designQA processes

Soft Skills

rapid learningadaptabilityindependent workdetail-orientedcommunication skillsremote collaboration