Remote Backend Security Engineer — Part-Time, Flexible

Appsierra Group; United States; On-site; USD 58,000 - 192,000; Part time

Job summary

Appsierra Group seeks a Backend Security Engineer to design backend security challenges used to train and evaluate AI systems. You will craft tasks around backend development, security vulnerabilities, debugging, and performance optimization, and build deterministic verifiers for valid solutions.

You’ll work with Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar languages to build scalable services and APIs. Remote contract role, ~15 hours/week, output-based compensation.

Qualifications

• Strong backend software engineering experience.
• Hands-on expertise with one or more of Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar technologies.
• Proven experience building scalable services and APIs.
• Strong debugging and troubleshooting skills.
• Experience with performance optimization and automated testing.
• Sound code review judgment.
• Experience identifying and resolving software vulnerabilities and defects.
• Experience implementing complex features in large-scale applications.
• Experience refactoring and improving existing codebases.
• Strong understanding of algorithms, data structures, and foundational computer science.
• Excellent analytical, problem-solving, and technical communication skills.

Responsibilities

• Design realistic and challenging backend engineering and security tasks for AI systems to solve.
• Create tasks involving feature implementation, bug fixing, debugging, security vulnerabilities, and performance optimization.
• Develop deterministic verifiers that accept valid solutions and reject incorrect, incomplete, or invalid implementations.
• Work with backend technologies including Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar languages.
• Build and evaluate scalable backend services and APIs.
• Identify and troubleshoot software defects, security weaknesses, and system bottlenecks.
• Apply automated testing to validate functionality, reliability, and security.
• Review code for correctness, maintainability, performance, and security.
• Refactor complex or legacy codebases while maintaining functional and security requirements.
• Apply secure coding principles and established security frameworks to practical engineering problems.
• Document technical reasoning, security considerations, implementation decisions, and solution approaches.

Skills

Java

Node.js

Go

Rust

TypeScript

Python

C++

Job description

Appsierra Group seeks a Backend Security Engineer to design backend security challenges used to train and evaluate AI systems. You will craft tasks around backend development, security vulnerabilities, debugging, and performance optimization, and build deterministic verifiers for valid solutions.

You’ll work with Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar languages to build scalable services and APIs. Remote contract role, ~15 hours/week, output-based compensation.