This job post has expired on April 08, 2026. It is likely that the position has already been filled.
Software Engineer (Cybersecurity) at Mercor
posted 7 months agoCybersecurity Software Engineer | $60–70/hr | Worldwide Remote | Part-Time Contract
Mercor is seeking experienced Software Engineers with a specialization in cybersecurity to support high-impact AI research collaborations. In this role, you'll help build training datasets that enhance AI model reasoning and problem-solving on real-world coding and security tasks.
About the Project
You'll work on SWE-bench–style tasks derived from real open-source repositories, annotating frontier-model trajectories to reconstruct and document the reasoning process behind AI problem-solving. This is a unique opportunity to directly shape the next generation of intelligent systems.
Key Responsibilities
- Design benchmark tasks by identifying vulnerability classes (type, subtype, and difficulty) and validating intended exploit behavior
- Create or validate small, runnable codebases that include ingestion and prompt/tool usage where trust boundaries are violated
- Validate attacks via exploit scripts and clearly document unsafe behaviors
- Verify patch implementations that prevent exploits and confirm fix effectiveness
- Produce detailed task metadata including severity mapping, file/line locations, impact analysis, remediation summaries, and references
- Conduct quality control reviews to ensure paths resolve correctly, line ranges are accurate, labels are not leaked, and fixes block exploits
Ideal Qualifications
- 2+ years of software engineering experience with a focus on application security, vulnerability research, or secure software development
- Bachelor's degree in Software Engineering, Computer Science, or a related field (advanced degree preferred)
- Strong proficiency in Python, JavaScript, TypeScript, or other common open-source languages
- Familiarity with version control workflows including Git, pull requests, and issue tracking
- Ability to articulate technical reasoning in clear, structured written communication
Project Details
- Start Date: Immediate
- Duration: 1–2 months
- Commitment: Part-time, 15–25 hours/week (flexibility up to 40 hours/week)
How to Apply
- Upload your resume
- Complete a short 15-minute AI-powered conversational interview
- Receive follow-up communication within a few days with next steps
Apply today and leverage your cybersecurity expertise to help build the future of AI-driven systems.
How to apply for this role
- Upload your resume — keep it up-to-date and in English. Mercor will auto-fill your profile from it.
- Complete the AI interview — a 15-minute conversation about your experience. Be ready to discuss specific projects and challenges you've solved.
- Submit your application — only about 20% of applicants finish all the steps, so completing yours puts you well ahead.