Senior Full-Stack Engineer
AfterQuery • Remote, United States
Education
Not stated
Type
Hourly
Pay Rate
$140/hr
Listed
116d ago
About this role
From the AfterQuery listing
AfterQuery empowers foundational AI labs, enterprises, and startups by providing high-quality human-generated datasets that are essential for fine-tuning more capable, refined, and reliable AI systems. We are on the forefront of creating the world's most complex data infrastructure to capture the useful data for our major clients. We have raised our most recent round from BoxGroup, YC and a group of strategic angels that will push us to be at the forefront of the industry.
We're seeking a Full Stack Engineer to build diverse, production-quality applications that will serve as training examples for AI models. You'll create complete, functional end-to-end applications across various domains and use cases - each application you build becomes part of our AI training dataset. Your work will involve developing a wide range of software solutions that demonstrate different architectural patterns, features, and implementations.
Requirements
- Must be eligible to work in one of: Remote, United States
- Fluent proficiency in English (Written & Verbal)
- Reliable high-speed internet connection
- Bachelor's degree or equivalent professional experience
- Demonstrated expertise in STEM
How long hiring takes
Across the AI training platforms we refer candidates to, the median gap between referral and hire is about 30 days. It varies by platform and role, so treat it as a rough guide for this one.
Interview Prep
This listing calls for these tools directly. Prep for the technical screen:
Why this role
Few outlets pay STEM specialists what the leading AI labs pay for direct judgment. At $140/hr, this Senior Full-Stack Engineer role prices in the expertise itself, separate from hours billed or clients managed.
Talent pool
We're light on STEM candidates
We've matched 65 people with a STEM background against 726 STEM listings we've tracked, so most go out without one. Set up a profile and we'll consider you for a role like this one.
Set up your profileSkills and categories
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Common questions
How long do AfterQuery projects last?
Typically 2 to 3 weeks at 10 to 20 hours a week. There's no guaranteed follow-on work once a project closes, so treat it as a high-pay burst contract rather than steady income. AfterQuery does re-hire specialists for new campaigns, but that depends entirely on what AI labs are training at the time.
When does AfterQuery pay contractors?
On a per-contract schedule, typically net-15 to net-30 from invoice submission rather than the weekly payouts some platforms offer. Confirm the exact terms in your contract, and ask your project contact directly if payment timing affects your cash flow.
What does the day-to-day workload look like for elite-expert AI training roles?
Slow and deep, not fast and repetitive. A single task can take 45-60 minutes of researching citations or verifying complex calculations. Quality is what's being measured here, not throughput.
Is AI training work the same as traditional consulting?
No. Instead of client deliverables, you're given complex scenarios to evaluate: grading the AI's logic, correcting its hallucinations, and supplying expert-level reasoning it doesn't have on its own. The job is closer to teaching than consulting.
What does STEM work look like for a Senior Full-Stack Engineer?
Tasks here are scoped to STEM, not generic labeling. As a Senior Full-Stack Engineer, expect to draw on real domain judgment (evaluating outputs, correcting errors, or providing expert reasoning specific to STEM) rather than following a one-size-fits-all rubric. If you don't have hands-on STEM background, this is likely not the right listing to start with.
What specific skills does this listing call for?
Coding, JavaScript, and SQL are named directly in the listing. If you don't have hands-on experience with these, expect the screening process to test for them directly rather than accepting adjacent experience as a substitute.
How much does this specific role pay?
This listing is posted at $140/hr, an hourly rate. Pay can change between when we last checked the listing and when you apply, so confirm the current number on the platform's own application page before committing time.
What happens when I click Apply on this listing?
You'll be taken to Afterquery's external site to complete your application there. This listing links through a referral, but the process is identical to applying directly; the link just routes you correctly. Create an account on their site and follow their onboarding steps.
Can I apply from outside the United States?
This specific role is open only to people based in the United States. If you are somewhere else, applying is unlikely to lead to an offer even if you pass the assessment, because the restriction is usually about where the work can legally be contracted rather than your skills. Read the full description for any tax-residency or right-to-work caveats before you apply.