One of the companies we work with at Joppy, a TOP Startup, is looking for an
Offensive Security Engineer
to join the team.

Working arrangement:
HYBRID in Madrid, Barcelona or A Coruña

What You’ll be doing?
- Perform proactive penetration testing across company’s applications, APIs, infrastructure, and AI-powered features.
- Reproduce and validate vulnerability reports submitted by third parties, like our bug bounty program.
- Collaborate with development teams to remediate security findings and enhance secure coding practices.
- Improve how we validate, triage, and remediate vulnerabilities from bug bounty reports, internal testing, automated controls, and external research.
- Hunt for recurring or legacy vulnerability patterns based on root cause analysis, previous incidents, and security findings.
- Build and improve security automations, agents, skills, and CI/CD controls that help engineering teams catch and fix issues earlier.
- Help secure company’s use of AI across product and internal workflows, including LLMs, agents, data access, tools, permissions,



and abuse scenarios.
- Contribute to the development of our security tools, automations, and infrastructure.
- Stay up-to-date with the latest security research, threats, attack techniques, and emerging AI security risks.

What are we looking for?
- You have 4+ years of professional experience in Application Security, Offensive Security, or Penetration Testing. Web Application Penetration Testing experience is mandatory.
- You hold a degree in Engineering or Computer Science and have strong knowledge of web applications, databases, network protocols, and operating systems.
- You possess strong knowledge in cybersecurity fundamentals, CVSS, testing methodologies, and tooling.
- You are fluent with scripting or programming languages used in security testing and automation, such as Python or Bash.
- You are technical, curious, and comfortable moving across different security problems instead of specializing in o

📌 Offensive Security Engineer | €42K (Barcelona)
🏢 Joppy
📍 Barcelona