Offensive Security Engineer

Factorial; España; Híbrido; EUR 40.000 - 46.000; Jornada completa

Descripción de la vacante

A leading software company in Spain is seeking an Offensive Security Engineer to enhance defenses against cyber threats. The ideal candidate will perform penetration testing, collaborate with teams on security findings, and contribute to the development of security tools. This role offers a competitive salary of 40,000€ and a vibrant work culture focused on innovation and growth.

Servicios

Private health insurance

Gym membership

Language classes

Breakfast in the office

Pet-friendly workplace

Formación

• 3+ years of professional experience in Penetration Testing.
• Strong knowledge of web applications, databases, network protocols, and operating systems.
• Certifications like BSCP or eWPTX are highly regarded.

Responsabilidades

• Perform proactive penetration testing on applications and systems.
• Collaborate with development teams to remediate security findings.
• Stay up-to-date with the latest security research and attack techniques.

Conocimientos

Penetration Testing

Web Application Security

Scripting in Python

Problem-solving skills

Knowledge of CVSS

Educación

Degree in Engineering or Computer Science

Herramientas

Ruby on Rails

Bash

Descripción del empleo

Hey there, Cybersecurity Enthusiasts! At Factorial, we’re on the hunt for a skilled Offensive Security Engineer to join our Security Team. We need your expertise to proactively hunt for vulnerabilities and strengthen our defenses against cyber threats. If you have a passion for ethical hacking and want to make an impact in a dynamic tech environment, we’d love to hear from you!

The Mission:

• Perform proactive penetration testing, identifying and exploiting vulnerabilities in our applications and systems.
• 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.
• Contribute to the development of our security tools, automations and infrastructure.
• Stay up-to-date with the latest security research, threats, and attack techniques.

Your Arsenal:

• You have 3+ years of professional experience in 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 (e.g., Python, Bash).
• You have excellent problem‑solving skills and a relentless pursuit of uncovering security weaknesses.
• Certifications like BSCP or eWPTX are highly regarded but not mandatory.
• Experience with Ruby / Ruby on Rails applications is highly regarded, but nor mandatory.
• Fluency in English is required.

Why Join Us?

• We offer a high‑growth environment where your work will directly impact the company’s success.
• You’ll be part of a team that values innovation, learning, and collaboration.
• You’ll have the opportunity to attend industry conferences and training events to further your skills.

If you’re ready to take on this challenge at Factorial, apply now! We can’t wait to see what you’ll bring to our team.

Compensation

The salary for this position is 40.000€ + 7% variable based on performance paid quarterly + ESOP plan.

How We Work

At Factorial, we believe the best products are built when people come together – in person – to collaborate, challenge ideas, and move fast. That’s why our Engineering Team follows an office‑first, flexible approach.

We work on‑site several days a week (80%), using that time to connect, align, and innovate as a team. However, we also understand the importance of focus and flexibility, so we support remote work when it makes sense (20%) – whether for deep work, personal needs, or just a change of scenery.

This balance helps us stay agile, creative, and closely connected—while giving everyone the space to do their best work.

Perks of being part of our team

• High growth, multicultural and friendly environment
• Continuous training and learning based on your needs
• Alan private health insurance
• Healthy life with Gympass (Gyms, pools, outdoor classes)
• Save expenses with Cobee
• Language classes with Yolk Academy
• Get the most out of your salary with Payflow

And when at the office...

• Breakfast in the office and organic fruit
• Nora and Apeteat discounts
• Pet Friendly

Join Factorial, where people grow

Diversity is part of our culture, we have more than 43 nationalities in our teams and we are infused in an inclusive environment for all employees and candidates. Please feel free to apply with the way it suits you better! (blind resume, identity pronouns, cover letter, etc). We do not discriminate on any aspect, in fact; Factorial encourages everyone to join us!

About Factorial

Factorial is an innovative Business Management Software solution designed to streamline company processes for small and medium‑size enterprises. Founded in 2016, our mission is to help companies automate workflows, centralize people data, and make better business decisions. With customers across over 60 countries worldwide, we’ve built a diverse team that’s driving change in the business‑management tech space. Join us as we continue our rapid growth journey!

Our Values

• We own it: We take responsibility for every project. We make decisions, not excuses.
• We learn and teach: We’re dedicated to learning something new every day and, above all, share it.
• We partner: Every decision is a team decision. We trust each other.
• We grow fast: We act fast. We think that the worst mistake is not learning from them.

Wanna learn more about us? Check our website!