Security Engineer - Fully Remote | Upto $85/hr

Mercor

London, UKremote country$177k/yrPosted Jun 30, 2026
Posting intelligenceActively listedReposted 4×, possible evergreen/ghost posting

About the role

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

Role 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.

Application Process (Takes 20–30 mins to complete)

AI interview based on your resume

Submit form

Resources & Support

For details about the interview process and platform information, please check: https://talent.docs.mercor.com/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.

Compensation

This Security Engineer role pays $177k/yr. Within typical range for security engineer roles in United Kingdom.

Questions about this role

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Compensation for Security Engineer roles in United Kingdom varies widely by seniority, employer size, and remote vs onsite arrangement. Check the salary range on this listing when published, or browse our Security Engineer hub for United Kingdom medians across recent openings.

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