Senior Engineer, Offensive Security

Become a part of our caring community   We're building a new AI & Offensive Tooling capability inside our Offensive Security organization, and we're looking for a senior engineer who can both build it and use it. As Senior Offensive Security Engineer, AI-Driven Red Team & Tooling, you'll build the AI and agentic tooling that makes our offensive operations faster and broader, then prove it where it counts, on real penetration tests, purple-team exercises, and red-team operations. You'll also bring that same offensive lens to the enterprise's own AI systems. It's one loop: build the tooling, prove it on live engagements, feed what you learn back into the tooling. And it's a rare chance to do that hands-on inside a program that helps protect the health data of millions of people.

One integrated mission, four ways it shows up: Build agentic offensive tooling. Write production-quality software and AI agents. These agents include LLM-driven planning loops and multi-agent orchestration. Additionally, create tool and function-calling capabilities that drive real offensive tooling. Furthermore, contribute to the in-house agent platform, which powers our pentest and red-team operations. You'll operate this as a production, event-driven cloud platform at real scale (dozens of serverless functions, change-stream data pipelines, hundreds of operational alarms, integrated LLM inference), real software engineering, not proof-of-concept scripting. Run penetration tests. Network, web-application, cloud, and infrastructure testing, recon through exploitation, privilege escalation, and lateral movement, accelerated by the tooling you build, with your own judgment owning scope and exploitability. Run purple-team exercises. Validate security countermeasures (EDR/XDR, NDR, DLP, firewalls) with our defensive partners, then pair with detection engineering to close the gaps your attacks reveal. Run red-team operations and test the enterprise's own AI. Objective-driven adversary emulation; and adversarial assessment of internal LLM-powered products, agents, RAG pipelines, and ML applications, prompt injection, jailbreaks, model extraction and inversion, membership inference, data and supply-chain poisoning, evasion, and agent tool/sandbox abuse, validating that guardrails and classifiers actually hold. Your first 6–12 months First 90 days: ramp on the agent platform and the offensive service lines; deliver your first engagements (a penetration test and a purple-team exercise) and ship one improvement to the agentic tooling that you used during them. By 6 months: ship at least one AI-driven tool that a service line adopts into its live workflow, with metrics showing coverage or turnaround gains; run a red-team operation end to end. By 12 months: stand up repeatable adversarial testing for at least one of the enterprise's own AI systems; establish an evaluation approach that tracks your tooling's autonomous success against representative targets; become a go-to for both building and operating across the team. Why this role, and why here Build and operate (both, for real). Most offensive roles let you build or operate. This one is explicitly both: you ship the software and you run the engagements, so your tooling is shaped by someone who actually uses it. A program that's already serious about AI. Fridays are dedicated to R&D. You'll have Hack The Box Pro Labs, all HTB role-based paths and certifications, discretionary certification funding, and conference/training budgets. You'll work alongside the Lead of our new AI & Offensive Tooling capability—contributing to the platform they own while running your own engagements. Mission that matters. Offensive Security identifies weaknesses so the business can fix them before adversaries exploit them, protecting the data and care of millions of people. AI is entering both our adversaries' tradecraft and our own operations faster than traditional tooling keeps up; you help keep us