Backend Security Engineer - Remote

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 Originally posted on Himalayas