hackajob is partnering with Mercor to fill this position. Create a profile to be automatically considered for this role—and others that match your experience.
Mercor is hiring experienced iOS mobile engineers with expertise in Swift or React Native 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.
Develop and validate coding benchmarks in Swift or React Native
Curate tasks, solutions, and test suites from real-world iOS repositories
Ensure benchmarks include robust unit and integration tests for solution verification
Debug, optimize, and document benchmark code to ensure reliability and reproducibility
Provide structured feedback on solution clarity and adherence to iOS engineering best practices
3–10 years of experience as an iOS mobile engineer at a top tier tech company or as a mobile freelancer
Strong proficiency in Swift
Experience with debugging, testing, and validating mobile applications
Attention to detail and ability to communicate technical reasoning clearly
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)
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
hackajob is partnering with Mercor to fill this position. Create a profile to be automatically considered for this role—and others that match your experience.
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