Cybersecurity Expert

ZettaMine Labs Pvt. Ltd.; Brasil; Remote; BRL 156,000 - 223,000; Full time

Job summary

ZettaMine Labs Pvt. Ltd. is seeking cybersecurity experts for a short-term freelance engagement to evaluate advanced AI models. The role is remote, contractor-based, with an initial 1-month duration and potential extension to 3 months, available immediately.

Candidates should have 4+ years in cybersecurity, hands-on testing, vulnerability research, and proficiency in Go, Python, Node.js, or Rust. The project uses Docker and requires fast, independent work in a fully remote setting.

Qualifications

• 4+ years of experience in cybersecurity, application security, or vulnerability research.
• Hands-on experience in penetration testing, vulnerability discovery, bug bounty, red teaming, CVEs, or CTFs.
• Strong understanding of vulnerability identification, secure code review, and production-grade security patching.
• Ability to design multi-vulnerability codebases using Go, Python, Node.js, or Rust.
• Experience creating multi-stage attack chains with realistic security scenarios.
• Strong knowledge of web security including OAuth, JWT vulnerabilities.
• Familiarity with Docker, Linux internals, and system behavior.
• Experience writing automated security tests using pytest or similar.
• Ability to analyze obfuscated/minified code for weaknesses.

Responsibilities

• Design and develop realistic security evaluation tasks for advanced AI models.
• Build multi-vulnerability codebases and multi-stage attack scenarios.
• Identify security vulnerabilities in applications and assess their potential impact.
• Develop offensive and defensive security scenarios to evaluate AI model capabilities.
• Build reproducible evaluation environments using Docker and automated verification systems.
• Write security test cases and exploit checks to verify vulnerability detection and mitigation.
• Analyze AI model outputs and reasoning to identify gaps in security understanding.
• Create adversarial scenarios involving obfuscated code, misleading documentation, and edge-case logic.
• Work with real-world CVE-based scenarios and synthetic vulnerability classes.
• Ensure evaluation tasks are reproducible, scalable, and reliable.

Skills

Cybersecurity

Penetration testing

Vulnerability research

Go

Python

Node.js

Rust

Docker

Security testing tooling

Tools

SAST

IAST

Docker

Fuzzing

CTF experience

Job description

Hello, Greetings from ZettaMine!!! Freelancing Opportunity :- We are hiring Cybersecurity Experts for a short-term freelance/contractor engagement for an advanced AI Training & Evaluation Project.

Eligible Locations: Bangladesh | Brazil | Colombia | Egypt | Ghana | India | Indonesia | Kenya | Nigeria | Turkey | Vietnam

Role: Cybersecurity Expert Experience: 4+ Years

Mode: Remote Engagement: Contractor / Short-Term Contract

Duration: 1 Month (Potential 3-Month Engagement)

Start: Immediate

Maximum Rate: $25/Hour

Mandatory Eligibility Criteria

Technical Qualification:

• 4+ years of experience in cybersecurity, application security, or vulnerability research.
• Hands-on experience in penetration testing, vulnerability discovery, bug bounty, red teaming, CVEs, or CTFs.
• Strong understanding of vulnerability identification, secure code review, and production-grade security patching.
• Ability to design and develop multi-vulnerability (multi-CWE) codebases using Go, Python, Node.js, or Rust.
• Experience creating multi-stage attack chains by combining multiple vulnerability classes into realistic security scenarios.
• Strong knowledge of web security, including authentication, sessions, OAuth, and JWT vulnerabilities.
• Understanding of SSRF, command injection, template injection, environment injection, and access control vulnerabilities.
• Knowledge of cryptographic vulnerabilities, including timing attacks, padding oracles, and cryptographic misuse.
• Understanding of filesystem vulnerabilities, including TOCTOU, symlink attacks, and path traversal.
• Experience with security tools such as SAST, fuzzing, IAST, or similar tools.
• Proficiency in at least one programming language: Go, Python, Node.js, or Rust.
• Familiarity with Docker, containerized environments, Linux internals, and system-level behavior.
• Experience writing automated security tests using pytest or similar frameworks.
• Ability to analyze obfuscated or minified code and identify potential security weaknesses.
• Strong analytical, problem-solving, and attack-chain reasoning skills.

Project Responsibilities:

• Design and develop realistic security evaluation tasks for advanced AI models.
• Build multi-vulnerability codebases and create complex, multi-stage attack scenarios.
• Identify security vulnerabilities in applications and assess their potential impact.
• Develop offensive and defensive security scenarios to evaluate AI model capabilities.
• Build reproducible evaluation environments using Docker and automated verification systems.
• Write security test cases and exploit checks to verify vulnerability detection and mitigation.
• Analyze AI model outputs and reasoning to identify gaps in security understanding.
• Create adversarial scenarios involving obfuscated code, misleading documentation, and edge-case logic.
• Work with real-world CVE-based scenarios and synthetic vulnerability classes.
• Ensure evaluation tasks are reproducible, scalable, and reliable.

Availability Requirements

• Available to work 8 hours per day (40 hours per week).
• Must have at least 4 hours of overlap with PST working hours.
• Immediate availability to start the project.
• Willingness to work in a fast-paced AI evaluation environment with tight deadlines.
• Personal laptop/desktop and stable high-speed internet.
• Ability to work independently in a fully remote environment.

What You'll Gain

• Opportunity to work on cutting-edge AI projects with leading LLM companies.
• Work on advanced cybersecurity and AI evaluation challenges.
• Fully remote freelance engagement.
• Exposure to frontier AI research and real-world security scenarios.