All roles

Open role

Javascript Developer - React.js

Remote · Argentina Full-time

hiring experienced frontend engineers to support a variety of high-impact research collaborations with leading AI labs. Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your engineering expertise toward shaping the next generation of intelligent systems.

  • Key Responsibilities
  • Develop and validate coding benchmarks in React, TypeScript, or JavaScript by curating issues, solutions, and test suites from real-world repositories
  • Ensure benchmark tasks include comprehensive unit and integration tests for solution verification
  • Maintain consistency and scalability of benchmark task distribution
  • Provide structured feedback on solution quality and clarity
  • Debug, optimize, and document benchmark code for reliability and reproducibility
  • Ideal Qualifications
  • 3–10 years of experience as a frontend engineer
  • Degree in Software Engineering, Computer Science, or a related field
  • Strong proficiency in React, Typescript or Javascript
  • Experience with debugging, testing, and validating code
  • Comfortable with technical writing and attention to detail
  • Project Timeline
  • Start Date: Immediate
  • Duration: 1 month
  • Commitment: Part-time (15–20 hours/week)
  • Schedule: Fully remote and asynchronous – flexible working hours
  • Compensation & Contract
  • $90 per hour plus lucrative bonus per approved task (1 task takes approximately 1 hour to complete)
  • Median average pay inclusive of bonuses is $200/hr
  • Independent contractor
  • Daily payment via Stripe Connect
  • Application & Onboarding Process
  • Upload your resume
  • AI interview: A short, 15-minute conversational session to understand your background, experience, and interest in the role
  • Brief assessment testing real-world coding ability, technical depth, and debugging approach
  • Follow-up communication within a few days with next steps and onboarding details

More open positions

Node.js Developer - AI Trainer

Work from home Full-time role

PHP Developer (Remote) (Hiring Immediately)

Work from home Full-time role

Dotnet C# Developer

Work from home Full-time role

Sr. Net Developer/Analyst

Work from home Full-time role

Mid-Level Software Engineer - (C#.Net, Angular, MongoDB)

Work from home Full-time role

Full-Time Remote Data Entry Specialist – Entry-Level Position with $34/hr Competitive Pay at careerzynith

Work from home Full-time role

Sr. Technical Support Engineer

Work from home Full-time role

Call Center Agent - Fundraiser - Remote

Work from home Full-time role

Clinical Outreach Representative, PPS

Work from home Full-time role

Software Engineer, iOS Core Product - Abuja, Nigeria

Work from home Full-time role

Entry-Level Data Entry Specialist – careerzynith Content Management & Process Optimization – Guatemala

Work from home Full-time role

Partner Manager

Work from home Full-time role

[Remote] Social Media Content Creator (Volunteer/Remote)

Work from home Full-time role

AI Governance Advisor

Work from home Full-time role

Office Administrator. Worthington LilyLifestyle

Work from home Full-time role

Database Engineer — 4D & Oracle to PostgreSQL Migration

Work from home Full-time role

Finance Operations Analyst (Revenue & Payroll)

Work from home Full-time role

Customer Experience Champion – Live Chat Support Specialist (Remote, Full-Time)

Work from home Full-time role

Cloud Engineer

Work from home Full-time role

[Remote] Account Executive - API Platform

Work from home Full-time role

AI/ML Engineer with Drone Imagery

Work from home Full-time role