Backend Security Engineer

• Design, develop, modify, and debug backend services, APIs, and application components
• Create challenging coding tasks involving secure software development, vulnerability fixes, authentication, authorization, and backend security controls
• Implement deterministic verifiers and automated tests to validate code behavior, functional correctness, and task requirements
• Identify and address security vulnerabilities using OWASP guidelines and Common Weakness Enumeration (CWE) classifications
• Review software implementations for correctness, security risks, performance, maintainability, and engineering standards
• Investigate software defects, performance bottlenecks, and complex system failures in large-scale applications
• Improve existing codebases through refactoring, architectural enhancements, and complex backend feature implementation
• Develop engineering tasks to evaluate and improve AI systems' software development, debugging, and security reasoning capabilities
• Complete application screening, an approximately 30-minute AI interview, a technical assessment if required, and hiring manager review
• Submit the required minimum number of tasks each week and start first tasks within 24–48 hours after selection and onboarding

• Strong backend development experience using Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar programming languages
• Proven experience building scalable backend services, APIs, and production-grade applications
• Strong debugging, automated testing, performance optimization, and code review skills
• Solid understanding of software architecture, algorithms, data structures, and fundamental computer science concepts
• Ability to identify software defects, diagnose system bottlenecks, and implement reliable solutions
• Strong analytical thinking, problem-solving, and technical communication skills
• Ability to work independently and exercise sound engineering judgment when solving complex technical problems
• Professional experience in cybersecurity, application security (AppSec), or Security Operations (SecOps) preferred
• Hands-on experience with penetration testing, vulnerability assessments, and security-focused code reviews preferred
• Knowledge of secure coding practices, OWASP Top 10, CWE classifications, and common software vulnerabilities preferred
• Experience identifying and remediating security flaws in backend services, APIs, and large-scale applications preferred
• Familiarity with security testing, automated validation, and vulnerability remediation workflows preferred
• Experience refactoring complex codebases and improving application reliability, scalability, and security preferred
• Candidates must complete interviews and assessments independently, without outside assistance
• Candidates should be ready to begin immediately
• Selected engineers must submit a specified minimum number of tasks each week

• Flexible schedule; choose hours and days, including weekends if desired
• Output-based compensation, with payment for each task meeting project specifications and quality standards
• Opportunity to contribute to next-generation AI systems
• Fast hiring process, often filled within 48 hours
• Ability to begin immediately; first tasks expected within 24–48 hours after selection and onboarding