Quality Control Lead

San Francisco, United States
Full-time

About the role

We are looking for a Quality Control Lead with experience doing hands-on QC of technical or human data, ideally at an AI lab, data company, or high-growth startup, to become our first dedicated quality hire. Today our Pod Leads handle quality review on top of their other work. You'll build a separate internal audit layer that checks every dataset before it reaches the frontier AI labs we serve. We want someone sharp and technical who knows what high-quality data looks like, whether that's RL trajectories, code, or reasoning data, and who can work independently from day one. You'll report directly to our Head of Operations and decide what's good enough to ship.

What you will be doing

  • Owning the final quality checkpoint before delivery – auditing code, reasoning, and RL trajectory datasets for correctness, structure, and adherence to spec
  • Building the QC function from scratch – defining review processes, rubrics, and grading criteria as the company's first dedicated quality hire
  • Partnering with Pod Leads and data delivery teams to find systemic quality issues and feed corrections back into contributor training
  • Working with infrastructure engineers to automate QC workflows and tooling so the same errors don't happen twice
  • Owning quality metrics and KPIs – reporting error rates, root causes, and improvement trends to the Head of Operations and leadership

About AfterQuery

AfterQuery is helping push the frontier of LLMs and AI Agents through novel datasets and experimentation. We work on building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows. We work the leading AI labs and are becoming the go-to partner for data infrastructure for YC companies. We have a sharp hockey stick growth rate and are extremely talent-dense, with most of our founding team coming from top IB and quant firms.

Required skills

Python
Claude Code

Other roles at AfterQuery

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Job details

Salary

$150,000 - $275,000

Location

San Francisco, United States

Experience

4+ years

Company

NameAfterQuery
Industryai, data, law
Team Size85

Funding

Total raised

$34M

Last stage

Series A

Investors

Altos Ventures
Y Combinator
BoxGroup
TThe Raine Group

Founders

Danny Tang

Danny Tang

LinkedIn
Carlos Georgescu

Carlos Georgescu

LinkedIn
Spencer Mateega

Spencer Mateega

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.