CareerPlan

Senior Security Researcher

Portugal - RemoteFull-time2026-11-06 → 2026-11-09

Core

Research and exploit weaknesses in LLM applications and autonomous agents to improve AI security and offensive security product offerings.

Role type

Senior Security Researcher (AI/LLM focus)

Builds

Attack tooling, agent harnesses, reproducible evaluations, and offensive security products

Domain

Artificial Intelligence, Large Language Models (LLM), Offensive Security

Deliverable

production ML models

Required skills

AI red teaming, offensive security, LLM fundamentals, harness engineering, agent security, evals and benchmarks, experimental design, research engineering, failure analysis, exploit validation

Preferred skills

Collaborative research, technical and non-technical communication

Technologies

Python, APIs, containers, browser automation

Responsibilities

Conduct AI red teaming (prompt injection, jailbreaks, data leakage), perform web/API penetration testing and business logic attacks, build agent orchestration tools, design realistic attack scenarios and benchmarks, analyze model and environment failures, produce reproducible proofs of concept and remediation reports.

Seniority

Senior, hands-on IC