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