Application Security Engineer (AppSec) - Remote

YO AI Labs is seeking an experienced Backend Software Engineer to support AI training through challenging coding tasks and reliable evaluation systems. The role involves developing, reviewing, debugging, optimizing, and securing backend software while creating coding tasks and providing technical feedback and documentation.

Responsibilities:

• Develop and review backend features, APIs, and scalable services
• Identify and resolve bugs, performance issues, and code quality problems
• Refactor and optimize existing codebases
• Create challenging coding tasks and deterministic evaluation criteria
• Apply secure coding practices and conduct security-focused reviews
• Provide clear technical feedback and documentation

Requirements:

• Strong backend development experience with Python, Java, Rust, C++, TypeScript, or similar languages
• Solid understanding of algorithms, data structures, and software engineering principles
• Experience with debugging, testing, performance optimization, and code reviews
• Strong analytical, problem-solving, and technical communication skills
• Experience with cybersecurity, pentesting, vulnerability assessment, or security audits is a plus