Backend Security Engineer, Remote - Contract

Xperteez Technology Pvt Ltd; United States; Remote; USD 83.000 - 131.000; Teilzeit

Zusammenfassung

Xperteez Technology Pvt Ltd is seeking a Backend Security Engineer for a remote contractor role (~15 hours per week). You will help build secure backend services, focusing on reliability and scalable APIs, with flexible hours.

You will work on training data pipelines for AI systems, implement feature work and bug fixes, and perform security reviews including pentesting and OWASP-aligned practices. Strong backend experience in Java, Node.js, Go, Rust, Python, or C++, plus automated testing and

Qualifikationen

• Strong backend experience in Java, Node.js, Go, Rust, TypeScript, Python, or C++.
• Track record building scalable services and APIs.
• Comfort with debugging, performance work and automated testing.
• Solid code review instincts.
• Cybersecurity or SecOps background is a big plus — secure coding, appsec, pentesting, vulnerability assessment, OWASP/CWE, or security-focused reviews.

Aufgaben

• Train AI systems by creating realistic coding tasks for evaluation.
• Implement deterministic verifiers to accept valid solutions and reject invalid ones.
• Ensure code quality through reviews, tests, and performance improvements.
• Assist in security reviews and threat modeling for backend services.

Kenntnisse

Python3

Java

Rust

Algorithms

C++

Typescript

Bug fixing

Feature implementation

Code refactoring

Performance optimization

Pentesting

Security audit

Jobbeschreibung

Job Details

Job Role: Backend Security Engineer Job Type: Contractor (~15 hrs a week) Location: Remote Schedule: Flexible, you pick the hours and days (including weekends if desired)

Job Summary

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters. You'll create realistic, interesting and challenging coding tasks for AI to solve involving feature implementation and bug fixes, and implement deterministic verifiers that accept reasonable valid solutions and reject everything else.

Required Skills

• Python3
• JAVA
• Rust
• Algorithms Basics
• C++
• Typescript
• bug fixing
• feature implementation
• codebase refactoring
• performance optimization
• pentesting
• Security audit

What we're looking for

• Strong backend experience in Java, Node.js, Go, Rust, Typescript, Python, C++ or similar
• A track record building scalable services and APIs
• Comfort with debugging, performance work and automated testing
• Solid code review instincts
• A cybersecurity or SecOps background is a big plus — secure coding, appsec, pentesting, vulnerability assessment, OWASP/CWE, or security-focused reviews.

Preferred Qualifications

• Proven experience in backend development, with a track record of delivering high-quality and performant projects.
• Background in cybersecurity, such as penetration testing, vulnerability assessment, or security code reviews.
• Demonstrated success in identifying and resolving software bugs and system bottlenecks.
• Experience with codebase refactoring and implementing complex features in large-scale applications.
• Strong understanding of algorithms, data structures, and foundational computer science concepts.
• Excellent analytical, problem-solving, and technical communication skills.

Application Note

A note on the process: our interview and assessment stages are designed to see how you think, so we ask that you complete them without outside assistance. The same applies once you're on the project — the value of the work comes from your own judgment.

Compensation Structure

Compensation is output-based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert’s experience and workflow. Minimum submission requirements apply. Experts must submit a minimum of tasks per week.

Start Timeline & Availability

We typically fill roles within 48 hours and are looking for experts ready to jump in right away. If selected, we expect you to start your first tasks within 24–48 hours of completing onboarding.

Originally posted on Himalayas