iOS Engineer - AI Model Evaluator - AI Trainer

Mercor; Chicago (IL); Remote; USD 103,320 - 137,760; Part time

Job summary

Mercor is hiring an iOS Engineer to work remotely. In this role, you will leverage cutting-edge AI coding agents to tackle complex engineering challenges, review code quality, and refine mobile applications.

The ideal candidate has over 2 years of iOS engineering experience and is skilled in using Swift and various AI tools. Competitive compensation of $85 per hour is offered, with $400 per accepted task. Join us and shape the future of mobile engineering!

Qualifications

• 2+ years of professional iOS engineering experience.
• Experience building and maintaining production iOS applications using Swift and modern iOS frameworks.
• Regular use of AI coding agents such as Cursor, Claude Code, Codex, Windsurf, Gemini CLI, or similar tools.

Responsibilities

• Use frontier AI coding agents to complete and evaluate complex engineering tasks.
• Review model-generated mobile application code for correctness, quality, maintainability, and performance.
• Identify bugs, edge cases, and failure modes in model outputs.

Skills

iOS engineering

Swift

Using AI coding agents

Mobile application evaluation

Tools

Cursor

Claude Code

Codex

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

iOS Engineer (Coding Agent Experience)

Type: Contract

Compensation: $85/hour

Location: Remote

Role Responsibilities

• Use frontier AI coding agents to complete and evaluate complex engineering tasks.
• Review model-generated mobile application code for correctness, quality, maintainability, and performance.
• Identify bugs, edge cases, and failure modes in model outputs.
• Compare outputs from multiple frontier models and assess their strengths and weaknesses.
• Apply professional engineering judgment to realistic mobile engineering scenarios.

Qualifications

Must-Have

• 2+ years of professional iOS engineering experience.
• Experience building and maintaining production iOS applications using Swift and modern iOS frameworks.
• Regular use of AI coding agents such as Cursor, Claude Code, Codex, Windsurf, Gemini CLI, or similar tools.
• Ability to evaluate model-generated mobile implementations and architectural decisions.

Preferred

• Experience shipping production mobile applications.

Compensation & Legal

• $400 per accepted task
• Typical tasks take approximately 2–3 hours after ramp-up.
• Compensation is tied to accepted work.