Backend Security Engineer - Remote

September 26, 2026

Senior Software Engineer – Cybersecurity & Backend Job Type: Contractor (:15 hrs/week) Location: Remote Schedule: Flexible Required Skills <ul><li>Python 3, Java, Rust, TypeScript, C++</li><li>Algorithms & Data Structures</li><li>Bug Fixing & Feature Implementation</li><li>Codebase Refactoring</li><li>Performance Optimization</li><li>Penetration Testing</li><li>Security Auditing </li></ul>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 <ul><li>Strong backend development experience in Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar</li><li>Experience building scalable services and APIs</li><li>Strong debugging, performance optimization, and automated testing skills</li><li>Solid code review and software engineering practices</li><li>Experience with cybersecurity, penetration testing, vulnerability assessment, or security audits</li><li>Familiarity with secure coding, AppSec, OWASP, and CWE is a plus </li></ul>Responsibilities <ul><li>Develop and debug complex software</li><li>Implement new features and resolve software issues</li><li>Refactor and optimize existing codebases</li><li>Create realistic coding and security tasks</li><li>Develop reliable deterministic verification systems</li><li>Identify vulnerabilities and potential security risks</li><li>Apply strong algorithms, data structures, and software engineering principles </li></ul>Preferred Qualifications <ul><li>Proven backend development experience</li><li>Cybersecurity or security engineering background</li><li>Experience with penetration testing or security audits</li><li>Strong understanding of algorithms, data structures, and computer science fundamentals</li><li>Excellent analytical, problem-solving, and technical communication skills </li></ul>

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