Backend Security Engineer - Remote

YO AI Labs; New York (NY); Remote; USD 83,000 - 124,000; Part time

Job summary

YO AI Labs is seeking a Senior Software Engineer to tackle cybersecurity and backend development. In this contractor role, you will design scalable services and secure APIs while contributing to the AI training workflow.

You will implement features, fix bugs, refactor code, and build deterministic verifiers to evaluate solutions, with emphasis on secure coding, performance, and automated testing.

Qualifications

• Strong backend development experience in multiple languages.
• 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, OWASP, 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.

Skills

Python 3

Java

Rust

TypeScript

C++

Algorithms & Data Structures

Bug Fixing & Feature Implementation

Codebase Refactoring

Performance Optimization

Penetration Testing

Security Auditing

Job description

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