Role Overview
Mercor is hiring a Senior/ Front-End Engineer / Max. This is a contract role in Toronto, Ontario. Part of Mercor's Frontend hiring. Full responsibilities, required qualifications, and the apply link are listed in the description below.
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Job Description
About the job
Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.
Position: Software Engineer
Type: Freelance
Compensation: $70–$80/hour
Location: Remote
Duration: 1–2 months
Commitment: 15–25 hours/week, with flexibility up to 40 hours/week
Role Responsibilities
- Write realistic, self-contained prompts for client-side web apps, games, tools, and simulations.
- Create precise, binary rubrics tagged by verification type.
- Ensure all rubric items are pass/fail and verifiable from screenshot and code inspection.
- Develop high-quality vibe coding data to train models on client-side web development skills, including state management, interactivity, UI correctness, and robustness.
- Collaborate with AI labs to improve AI model performance on real-world client-side web development tasks.
- Work independently and asynchronously to meet deadlines while enhancing AI model performance.
Qualifications
Must-Have
- 2+ years of experience in frontend/full-stack development or technical content creation.
- Bachelor's degree in Software Engineering, Computer Science, or a related field.
- Strong proficiency in JavaScript, TypeScript, React, or vanilla JS.
- Comfortable writing precise technical specifications and evaluation criteria.
Start Date
- Immediate
Application Process (Takes 20–30 mins to complete)
- Upload resume
- AI interview: A short, 15-minute conversational session to understand your background, experience, and interest in the role
- Follow-up communication within a few days with next steps and onboarding details
Resources & Support
- For details about the interview process and platform information, please check: https://talent.docs.mercor.com/welcome/welcome
- For any help or support, reach out to: support@mercor.com
PS: Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.
Original job Sr/ Front-End Engineer /80/hr Max posted on GrabJobs ©. To flag any issues with this job please use the Report Job button on GrabJobs.
Frequently Asked Questions
How do I apply for the Senior/ Front-End Engineer / Max position at Mercor?
Use the Apply button above to submit your application directly to Mercor. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.
Where is the Senior/ Front-End Engineer / Max position at Mercor located?
This position is based in Toronto, Ontario. Mercor has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.
What does a Senior/ Front-End Engineer / Max at Mercor earn?
Mercor has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.
When was the Senior/ Front-End Engineer / Max role at Mercor posted?
This role was posted on March 22, 2026 (88 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.
How much experience does the Senior/ Front-End Engineer / Max role at Mercor require?
This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Mercor lists their specific requirements in the description below, so review the must-have qualifications closely before applying.
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