Offensive Security Engineer

Fynity; Madrid; Híbrido; EUR 40.000 - 50.000; Jornada completa

Descripción de la vacante

A fast-growing SaaS company in Madrid is seeking an Offensive Security Engineer to enhance security capabilities by conducting penetration testing and collaborating with engineers. The role requires strong experience in security testing, particularly for web applications, and offers a competitive salary of €40,000-€50,000 plus benefits including health insurance and performance bonuses.

Servicios

Health insurance

Gym

Language Classes

Retail and Food Discounts

Flexible benefits

Formación

• Strong experience in penetration testing, particularly for web applications.
• Solid foundational knowledge in web, network, operating systems, and databases.
• Fluent in English.

Responsabilidades

• Perform proactive penetration testing across apps and systems.
• Validate bug bounty submissions and external vulnerability reports.
• Collaborate with engineers to remediate vulnerabilities.

Conocimientos

Penetration testing

Scripting / programming (Python, Bash)

Understanding of CVSS and security testing methodologies

Curiosity and ethical hacking

Knowledge of web, network, OS, and database fundamentals

Educación

Certifications such as BSCP or eWPTX

Descripción del empleo

Offensive Security Engineer

Fynity is proud to be partnering with one of Europe’s fastest-growing SaaS scale-ups as they continue to strengthen their internal security capabilities.

They’re looking for a talented and proactive Offensive Security Engineer to join a tight-knit Security team of five, working at the heart of the business to proactively uncover vulnerabilities, strengthen defences, and shape the company’s security strategy.

What you’ll do

• Perform proactive penetration testing across apps and systems.
• Reproduce and validate bug bounty submissions and external vulnerability reports.
• Partner with engineers to remediate vulnerabilities and enhance secure coding practices.
• Contribute to the development of security tools, automations, and infrastructure.
• Stay ahead of evolving attack techniques and emerging threats.

What you’ll bring

• Strong experience in penetration testing (web app testing is a must).
• Solid knowledge of web, network, OS, and database fundamentals.
• Understanding of CVSS, security testing methodologies, and tooling.
• Strong scripting / programming (Python, Bash, etc.).
• Curious mindset and a love for ethical hacking.
• Certifications such as BSCP or eWPTX (highly valued, but not essential).
• Experience with Ruby/Ruby on Rails (bonus).
• Fluent English language required.

Why join

Fast-moving, rapidly growing, SaaS environment. True impact - your work directly protects millions of users.

Excellent salary of €40,000-€50,000 + 7% performance bonus (paid quarterly) + ESOP Plan.

Great benefits including Health insurance, Gym, Language Classes, Retail and Food Discounts and other flexible benefits.

Location

Onsite Barcelona. 80% office / 20% remote. Please note, you must be eligible to work in Spain.

If you are an Offensive Security Engineer / Penetration Tester / Ethical Hacker and thrive on challenge, collaboration, and autonomy, then this is a fantastic opportunity to do meaningful security work in a high-growth environment.