Security Engineer - Fully Remote | Upto $85/hr

mercor; San Francisco (CA); Hybrid; GBP 73,000 - 104,000; Part time

Job summary

Mercor is seeking a Security Engineer to collaborate with frontier AI coding agents to tackle complex security tasks and assess model-generated code for vulnerabilities. The role requires independence, rigorous reasoning, and risk-aware decision making.

You will review security architectures, identify edge cases, and help ensure secure production-grade systems while working remotely on flexible timelines.

Qualifications

• 2+ years of professional security engineering experience.
• Experience with application security, cloud security, infrastructure security, or vulnerability management.
• Regular use of AI coding agents such as Cursor, Claude Code, Codex, Windsurf, or Gemini CLI.

Responsibilities

• Use frontier AI coding agents to complete and evaluate complex security engineering tasks.
• Review model-generated code and architectures for vulnerabilities and security risks.
• Identify bugs, edge cases, and security-related failure modes.
• Compare outputs from multiple frontier models to assess strengths and weaknesses.
• Apply professional engineering judgment to realistic security engineering scenarios.
• Work independently and asynchronously to meet deadlines while improving AI model performance.

Skills

Security engineering

Application security

Cloud security

AI coding agents

Tools

Cursor

Claude Code

Codex

Windsurf

Gemini CLI

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: Security Engineer (Coding Agent Experience) Type: Contract Compensation: $85/hour Location: Remote

Responsibilities

• Use frontier AI coding agents to complete and evaluate complex security engineering tasks .
• Review model-generated code and architectures for vulnerabilities and security risks.
• Identify bugs, edge cases, and security-related failure modes.
• Compare outputs from multiple frontier models to assess strengths and weaknesses.
• Apply professional engineering judgment to realistic security engineering scenarios .
• Work independently and asynchronously to meet deadlines while improving AI model performance .

Qualifications

Must-Have

• 2+ years of professional security engineering experience.
• Experience with application security , cloud security , infrastructure security , or vulnerability management .
• Regular use of AI coding agents such as Cursor, Claude Code, Codex, Windsurf, or Gemini CLI.
• Ability to identify flaws in model-generated code and architectures.

Preferred

• Experience securing production systems.

Compensation & Legal

• $400 per accepted task .
• Compensation is tied to accepted work.