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87,000+ live jobsHybrid in Barcelona·Full-time·Added 1 month ago
Still open when we checked on 9 Oct
€42,800 - €60,500 a year
Gross, as stated in the ad.
About €2,610 - €3,480 a month after tax.
Permanent contract
Full-time.
Hybrid
Office and home days — the ad has the split.
Blue Card threshold
Indicative — the ad doesn’t promise sponsorship.
Work in English
English is required, per the ad.
Be near Barcelona, Spain (Hybrid) for hybrid days
No relocation package mentioned.
Have 3+ years of experience
Mid-level role.
University degree
“You hold a degree in Engineering or Computer Science and have strong knowledge of web applications, databases, network protocols, and operating systems.” — per the ad.
Private health insurance
Per the ad: paid by the employer, or taken through flexible pay.
Gym access
Free or discounted, per the ad.
You have 3+ 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 only one area.
You like to attack systems, but you also enjoy building tools, automations, guardrails, and practical solutions that make security scale.
You do not need to be an expert in every technology, but you should be able to reason critically, learn fast, use AI effectively, and design pragmatic solutions.
You have curiosity and willingness to learn about AI security topics such as LLM testing, prompt injection, agentic workflows, data exposure, tool permissions, RAG security, and secure AI adoption.
Fluency in English is required.
Certifications like BSCP or eWPTX are highly regarded but not mandatory.
Experience with Ruby / Ruby on Rails applications is highly regarded, but not mandatory.
At Factorial we don't evaluate you by years of experience but by your knowledge and skills.
We use our Career Path with a rubric framework where we define what is expected for each experience level and skill. This framework allows you to know your current level and what you need to keep growing. We love transparency, so our Career Path includes the salaries for each level, which we share during the first interview to ensure alignment.
The salary range for this position is between 40.000 - 55.000€ base + 7-10%variable based on performance payed quarterly + ESOP plan.
High growth, multicultural and friendly environment
Competitive ESOP plan
Alan as private health insurance
Healthy life with Wellhub (Gyms, pools, outdoor classes)
Save expenses with Cobee
Language classes
Breakfast in the office and organic fruit
Food discounts with Nora
Much more that we'll spill during the interview process!
At Factorial, we're on the hunt for a skilled Application 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!
Ready to be part of the challenge? 🚀
Perform proactive penetration testing across Factorial'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 Factorial'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.
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.
Our Hiring Process
Pet Friendly
Intro Call → Chat with our Talent Partner about your journey and goals.
Hiring Manager Interview → Deep dive into your product mindset, teamwork, and problem-solving.
Technical Interview → A collaborative technical discussion based on real-life problems.
Final Coffee Chat → A relaxed conversation with our CTO & VP of Engineering to explore our vision, culture, and your growth.
The whole process is remote, using videoconferencing tools!
Factorial is a Barcelona-based software company that provides an all-in-one human resources management platform for small and medium-sized businesses. Its cloud-based solution covers HR administration, payroll, time tracking, talent management, and expense management, helping companies digitize and automate their HR processes. Founded in 2016, Factorial has grown rapidly and now serves thousands of customers across Europe, the Americas, and Asia, with a workforce of over 800 employees.
Factorial's headquarters and main engineering hub are in Barcelona, making it a key player in Spain's vibrant tech ecosystem. The company has a strong international presence with offices in Mexico City, São Paulo, and other cities, and its workforce is highly diverse, with employees from over 30 nationalities. For international professionals, Factorial offers a dynamic, fast-paced startup culture, opportunities to work with a global team, and the chance to contribute to a product that is reshaping HR for SMBs worldwide. The company is known for its flat hierarchy, agile work environment, and commitment to employee growth.
Security at Factorial works side by side with Product and Engineering to help a fast-moving, AI-native company ship without losing control of risk. Our mission is to protect Factorial and our customers while making security a practical part of how software is designed, built, tested, and operated.
The work goes far beyond finding vulnerabilities: we test real product surfaces, help teams fix issues properly, and turn repeated security needs into guardrails, automation, and CI/CD controls that developers can use every day. AI is part of Factorial's culture, product, and way of working from day one, so Security also helps define how teams use agents, LLMs, tools, and company data safely at scale, while actively challenging those systems with an attacker mindset.
It's a team for people who want to keep learning, move across different security problems, and build security that can keep up with the speed of the company.
Factorial is the AI for Business that knows companies, connects how work happens across the business, and turns that context into action.
Founded in Barcelona in 2016, we now have +1,700 employees serving more than 16,000 companies across 112 countries.
Factorial started with a simple idea: companies were spending too much time managing processes and not enough time doing the work they were hired to do: their best work.
But as companies grow, work gets more disconnected. More people, more tools, more information, and more time spent connecting the dots. Generic AI can answer questions, but it doesn't know your company. Every time, you have to give it the context.
Factorial is different. Because it's inside the company, it already knows how it works, including its people, processes, policies, and data. So you can ask it to do real work, from screening candidates and managing expenses to answering questions and creating reports.
AI isn't the goal. Giving people back their time is.
When work changes, so do we.
We believe in diverse talent: we welcome applicants from all backgrounds and strongly encourage people of diverse experiences and identities to apply.
We believe in inclusion: we are committed to equal opportunities and actively promote workplace inclusion of people with disabilities. If you would like to learn more about our inclusive recruitment processes, you are welcome to indicate so optionally and we will share additional information with you.
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!
This role involves leading and coaching a high-performing sales team to drive expansion within existing customers. You will combine active selling with leadership to meet team KPIs.
Pre-sales consultant for the Italian market focusing on payroll and time management products. You will drive customer acquisition and deliver expert consulting. The role is based on-site in Barcelona.
We are looking for a Senior/Staff Site Reliability Engineer to join our Infrastructure Team. You will ensure application performance, scalability, and security while leading technical discussions.
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You will lead a small team of engineers while remaining hands-on with the codebase. The role involves shipping features, mentoring staff, and driving AI-native product development.
You will own the full sales cycle for Factorial's Finance product, targeting CFOs and finance leaders. The role offers a competitive salary and various perks in a high-growth environment.
This role involves prospecting potential customers and qualifying leads to drive pipeline growth for the Italian market.
As a Senior AI Enablement Engineer, you will build reusable AI components and architectures for the entire company. You will partner with business teams to turn ideas into scalable AI use cases.
Lead a team of Account Managers for the Portuguese market. You will drive customer retention, upselling, and team performance. This is an onsite role in Barcelona.
This role manages upselling opportunities for existing Small Accounts in the French market. You will build strong customer relationships and execute the full sales cycle to exceed quotas.
You will lead a team of Onboarding Specialists to drive customer retention and satisfaction. The role offers competitive salary and various perks like private health insurance.
This role focuses on qualifying opportunities and mapping high-potential accounts for the Italian market. You will execute multichannel outreach and book product demos to drive expansion deals.
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