Talent.com
Mercor
Remote Frontend Engineer - AI Trainer ($90-$90 per hour)Mercor • Durham, North Carolina, US
Remote Frontend Engineer - AI Trainer ($90-$90 per hour)

Remote Frontend Engineer - AI Trainer ($90-$90 per hour)

Mercor • Durham, North Carolina, US
2 days ago
Salary
$90.00 hourly
Job type
  • Full-time
  • Remote
Job description
  • About the work We're building a high-quality dataset of human preference judgments on AI-generated frontend code. Each task hands you a reference web page — crawled from the real internet, delivered as a full zipped site tree plus screenshots of its default view and, on some pages, additional states reached by hovering, clicking, or scrolling. Alongside it come two model attempts, A and B, each a zipped self-contained site tree. The models only ever saw the screenshots; they never had the source. You download all three, run them locally, view each at a 1920×1080 viewport, interact with them to reach every required state, then open the source of both attempts and grade them against each other — on visual fidelity per state, and on how the code is actually constructed. Structure and responsiveness are explicitly part of the rubric, not just the render. This is evaluation work, not authoring. The defining skill is not that you can build a page — it's that you can open someone else's page and tell how it was built and where it cheats. Please read before applying - Each unit takes roughly 2–3 hours and is timed. This is not microtask work; if you can only offer scattered 15-minute windows, you will not be able to finish a unit. - You need a real local development environment. A tablet, a Chromebook, or a locked-down work machine that cannot run a local static server will not work for this project. - You need at least one completed Mercor engagement, delivered in full. We are not onboarding net-new experts to this project. What you'll do - Render a reference page and two candidate replications at 1920×1080 and judge which is the closer reproduction, state by state. - Diff visual fidelity in detail : box model and spacing, typography (family, size, weight, line-height, letter-spacing), color and border treatment, image and asset handling, z-order and overflow. - Read the source of both attempts and grade construction quality — distinguishing a replication that is genuinely correct from one that merely looks correct at one viewport. Hardcoded pixel offsets, absolute positioning standing in for real layout, inline style soup, a single undifferentiated div tree, or a screenshot pasted in as an `` instead of a rebuilt section. - Test responsiveness : a nav bar that looks right at 1920px but collapses at 1400px is a defect, and you should be able to say precisely why. - Write a specific, evidence-cited justification for every preference. We need "B nests the article body in a single absolutely-positioned div, so the text overlaps the footer below 1600px, while A uses normal document flow" — not "A looks closer." - Use the "this task is broken" escape hatch with judgment : distinguish a task that genuinely cannot be completed from the screenshots provided from one that is merely hard. Over-flagging and under-flagging are both failure modes. You're a fit if you have - 3–8 years of professional web development experience, shipping web interfaces for a living, primarily in frontend or full-stack work. - Fluency across web eras. The reference pages are real crawled sites — one is a small charter-fishing business built in the table-and-image-map tradition, another a corporate press-release page with stacked navigation rows and social share widgets. If your entire career happened inside a modern component framework and you have never authored raw CSS or seen a `` used for layout, you will misjudge many of these pages. - Command of hand-written HTML and CSS : semantic markup, flexbox, grid, media queries, and legacy float- and table-based layouts you can read and reason about. You should be able to look at a rendered layout and predict what's holding it together before opening DevTools. - Browser DevTools as muscle memory — setting an exact viewport, walking the element tree, checking computed styles, watching what a hover handler mutates. - Command-line comfort : unzipping an archive, standing up a static local server because the relative asset paths demand it, and untangling a broken image reference rather than giving up and grading from the screenshot. - Enough JavaScript to read a page's scripts and understand what they do to the DOM, even if you don't write JS daily. - Professional written English. Every task ends in a free-text justification, and a rating without a specific rationale is worth very little. Equipment - A desktop or laptop that displays a 1920×1080 viewport. - Administrator rights on your own machine, so you can install and run a local server. Nice to have - Prior RLHF, preference-labeling, model-evaluation, or structured code-review work — the strongest single signal. Rubric-driven comparison at volume needs almost no ramp here. - Pixel-perfect design-to-code experience : agency work, design systems, template production. Anyone who has had a designer reject a build over four pixels has exactly the fidelity eye this needs. - Accessibility expertise (ARIA, semantic landmarks, heading hierarchy) — you'll notice immediately when an attempt renders a heading as a styled ``. - Familiarity with how LLMs fail at code generation. - Web scraping, archiving, or DOM-parsing background — comfort with messy crawled site trees. - More than one completed Mercor project, and availability in contiguous multi-hour blocks. Note : this seat is for practicing web developers. Backend-only, ML / data-science-only, mobile-native-only, and DevOps-only engineers do not have the UI instincts this requires, however strong they are otherwise. Designers who do not code cannot grade the source axes at all. Framework-only engineers who have never authored CSS outside a component library will struggle with the legacy reference pages.
Create a job alert for this search

Remote Frontend Engineer - AI Trainer ($90-$90 per hour) • Durham, North Carolina, US

Similar jobs

Senior Full Stack Engineer - HealthTech (Remote o U.S.)

UrrlyApex, NC, United States
Remote
Full-time

Senior Full Stack Engineer - HealthTech (RemoteU.Earn $190K-$200K working fully remote building real healthcare tech that matters.This role is fully remote anywhere in the U.Pay :$190K-$200K base b... Show more

 • Promoted

Consumer Insights Analyst

Earn HausRougemont, North Carolina, United States
Part-time

We're currently seeking motivated individuals to participate in online surveys and paid gaming opportunities for well-known national brands.If you're looking for a flexible way to earn extra cash f... Show more

 • Promoted

Restaurant Delivery - Start Earning Quickly

DoorDashHurdle Mills, NC, United States

DoorDash is the #1 category leader in food delivery, food pickup, and convenience store delivery in the US, trusted by millions of customers every day.As a Dasher, you’ll stay busy with a var... Show more

 • Promoted

Remote Physics Expert (PhD) - $100+ per hour

Turing Roxboro, North Carolina
Remote
Full-time
Quick Apply

Remote contract for PhDs in Physics, Applied Physics, or related fields.Work on cutting-edge projects with top AI labs while earning $100+/hour, fully remote, with flexible weekly hours.Help fine-t... Show more

 • Promoted

Work From Home

Remote JobsLeasburg, NC
Remote
Full-time

Remote Jobs are now available in your area.This position is a work from home position.You will not need to come into the office.Benefits: Health Insurance, 401K, Vacation& PTO.Apply now! Work f... Show more

 • Promoted

Medical Assistant

Eventus WholeHealthRoxboro, NC, United States
Full-time

Eventus WholeHealth delivers an integrated model that provides holistic care for medically vulnerable adults achieving extraordinary outcomes for the people we serve.This care is provided to adults... Show more

 • Promoted

REMOTE: Director, AI Experience Engineering

LenovoHolly Springs, NC, United States
Remote
Full-time

Description and RequirementsAbout Our TeamLenovo's Intelligent Devices Group (IDG) AI Ecosystem Team is seeking a Director, AI Experience Engineering As Director, AI Experience Engineering, you wil... Show more

 • Promoted

Remote Mathematics Expert (PhD) - $100+ per hour

Turing Roxboro, North Carolina
Remote
Full-time
Quick Apply

Remote contract for PhDs in Mathematics, Statistics, or related fields.Work on cutting-edge projects with top AI labs while earning $100+/hour, fully remote, with flexible weekly hours.Help fine-tu... Show more

 • Promoted

Cost Representative II

Zachry GroupRoxboro, NC, United States
Full-time

The Cost Representative I&II represents a progressive career path within the Project Cost department.These roles are responsible for maintaining accurate earned value progress and actual cost data ... Show more

 • Promoted

Delivery Driver - Start Earning Quickly

DoorDashTimberlake, NC, United States

DoorDash is the #1 category leader in food delivery, food pickup, and convenience store delivery in the US, trusted by millions of customers every day.As a Dasher, you’ll stay busy with a var... Show more

 • Promoted

Delivery Driver - Sign Up and Start Earning

DoorDashHurdle Mills, NC, United States

DoorDash is the #1 category leader in food delivery, food pickup, and convenience store delivery in the US, trusted by millions of customers every day.As a Dasher, you’ll stay busy with a var... Show more

 • Promoted

Dashers - Sign Up and Start Earning

DoorDashTimberlake, NC, United States

DoorDash is the #1 category leader in food delivery, food pickup, and convenience store delivery in the US, trusted by millions of customers every day.As a Dasher, you’ll stay busy with a var... Show more

 • Promoted

Earn up to $400 per Day by Playing Games and TakingSurveys

Freecash.comApex, North Carolina, United States
Full-time

Since its launch 6 years ago, over 60MN users have earned and withdrawn over $250MN! The platform is rated 4.TrustPilot with over 230k+ reviews, establishing Freecash as one of the highest-rated op... Show more

 • Promoted

UI Software Engineer Remote

Cisco Systems, Inc.Durham, NC, United States
Remote
Full-time

The application window is expected to close on :December 15, 2025.Job posting may be removed earlier if the position is filled or if a sufficient number of applications are receivedRemote USMeet th... Show more

 • Promoted

Remote Chemistry Expert (PhD) - $100+ per hour

Turing Roxboro, North Carolina
Remote
Full-time
Quick Apply

Remote contract for PhDs in Chemistry, Chemical Engineering, or related fields.Work on cutting-edge projects with top AI labs while earning up to $100+/hour, fully remote, with flexible weekly hour... Show more

 • Promoted

Senior Software Engineer - Remote

YO AI LabsNorth Carolina, United States
Remote
Full-time
Quick Apply

In this role, you'll apply your expertise to help train next-generation AI systems.Your work will shape how models learn, reason, and perform through high-quality, real-world input.No prior experie... Show more

Restaurant Delivery - Sign Up and Start Earning

DoorDashTimberlake, NC, United States

DoorDash is the #1 category leader in food delivery, food pickup, and convenience store delivery in the US, trusted by millions of customers every day.As a Dasher, you’ll stay busy with a var... Show more

 • Promoted

Remote Product Tester - Flexible Studies

BuzzTestersRoxboro, NC
Remote
Full-time

Earn up to $400/week, depending on the number and type of studies you complete.Share honest feedback on products and services from independent brands.Assignments include short online surveys (10–20... Show more

 • Promoted

Remote Resident Medical Specialist (MD/DO)

Turing Roxboro, North Carolina
Remote
Full-time
Quick Apply

Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems.Turing s... Show more

 • Promoted

Work from home - Market Research Study

Earn HausRoxboro, North Carolina, United States
Remote
Full-time +1

We are urgently seeking people interested in taking market research studies for well known brands.If you are a self-starter, looking for flexible hours throughout the week, this may be for you! Ear... Show more