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Posted on 2026/09/27

Backend Security Engineer - Remote

YO AI Labs

New York, NY, United States

Full-time

Senior Software Engineer – Cybersecurity & Backend

Job Type: Contractor (:15 hrs/week)

Location: Remote

Schedule: Flexible

Required Skills

  • Python 3, Java, Rust, TypeScript, C++
  • Algorithms & Data Structures
  • Bug Fixing & Feature Implementation
  • Codebase Refactoring
  • Performance Optimization
  • Penetration Testing
  • Security Auditing

Job Summary

Work on challenging coding and security tasks designed to help train next-generation AI systems. You'll create realistic coding problems, implement features and bug fixes, and build deterministic verifiers to evaluate solutions.

What We're Looking For

  • Strong backend development experience in Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar
  • Experience building scalable services and APIs
  • Strong debugging, performance optimization, and automated testing skills
  • Solid code review and software engineering practices
  • Experience with cybersecurity, penetration testing, vulnerability assessment, or security audits
  • Familiarity with secure coding, AppSec, OWASP, and CWE is a plus

Responsibilities

  • Develop and debug complex software
  • Implement new features and resolve software issues
  • Refactor and optimize existing codebases
  • Create realistic coding and security tasks
  • Develop reliable deterministic verification systems
  • Identify vulnerabilities and potential security risks
  • Apply strong algorithms, data structures, and software engineering principles

Preferred Qualifications

  • Proven backend development experience
  • Cybersecurity or security engineering background
  • Experience with penetration testing or security audits
  • Strong understanding of algorithms, data structures, and computer science fundamentals
  • Excellent analytical, problem-solving, and technical communication skills