Web Security Detection Researcher (Equity Eligible)

Cloudflare; United States; On-site; USD 150,000 - 185,000; Full time

Benefits offered by this job

Health care benefits

401(k) Retirement Savings Plan

Employee Stock Participation Plan

Flexible paid time off

Job summary

United States Digital Space LLC is seeking a security-focused professional to join our Detection team in New York, specializing in anti-bot and anti-fraud capabilities. You will reverse-engineer adversaries, develop detection signals, and automate investigations to scale defenses across our global network.

The role requires deep web expertise, proficiency in Python/JavaScript, and an adversarial mindset to stay ahead of evolving threats.

Qualifications

• Strong understanding of web security and attacker tooling.
• Experience with reverse engineering and ethical hacking.
• Proficiency in scripting languages (Python/JavaScript) for PoCs and tooling.

Responsibilities

• Study adversaries by reverse-engineering bot tools and fraud kits.
• Probe detections like an attacker to close gaps and stay ahead.
• Track bot and fraud ecosystems and convert insights into detection signals.
• Develop heuristics, signatures, and detection ideas with Data Scientists and Engineers.
• Design mitigations that preserve detection signals while neutralizing attackers.
• Automate analyst workflows by turning manual investigations into scalable processes.

Skills

Web security

HTTP/TLS knowledge

Fingerprinting

CAPTCHAs

Ethical hacking

Reverse engineering

Python

JavaScript

Tools

Python

JavaScript

Job description

United States Digital Space LLC is seeking a security-focused professional to join our Detection team in New York, specializing in anti-bot and anti-fraud capabilities. You will reverse-engineer adversaries, develop detection signals, and automate investigations to scale defenses across our global network.

The role requires deep web expertise, proficiency in Python/JavaScript, and an adversarial mindset to stay ahead of evolving threats.