Staff Attack Engineer (Fully Remote)

Horizon3; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work

Medical insurance

Dental insurance

Vision insurance

Job summary

Horizon3 is a cybersecurity company delivering NodeZero autonomous pentests to identify exploitable attack vectors. The team is fully remote and comprises engineers and former special ops operators focused on respect and ownership.

The role emphasizes design of prompt injection, defense evasion, and tool-use exploitation attacks, with strong emphasis on Python, pentesting fundamentals, and AI/LLM security frameworks. Competitive salary and benefits are offered, with remote work flexibility.

Qualifications

• Expert Python, pentesting fundamentals, and AI/LLM security frameworks required.

Responsibilities

• Design prompt injection, defense evasion, and tool-use exploitation attacks.
• Build and extend LLM-powered apps and microservices with production guardrails.

Skills

Python

Penetration testing

LLM security

Defense evasion

Prompt injection

Job description

• Break AI and agentic systems; turn research into automated attacks for NodeZero.
• Build repeatable, scalable attack patterns, not manual pentesting.

Key Work:

• Design prompt injection, defense evasion, and tool-use exploitation attacks.
• Build and extend LLM-powered apps and microservices with production guardrails.
• Expert Python, pentesting fundamentals, and AI/LLM security frameworks required.
• Offers competitive salary, equity, remote work, and medical/dental/vision insurance.

Horizon3

Horizon3 is a cybersecurity company whose NodeZero platform delivers autonomous pentests to find exploitable attack vectors. It’s a fast-growing, fully remote team of engineers and former special ops operators with a culture of respect and ownership.