If you love getting hands-on with web security, cloud infrastructure and the emerging risks of AI and LLM integrations, you'll feel right at home with us. At Metricool you will be able to do so with real ownership over how security and compliance get built into the product, not just audited after the fact. You will have the possibility to work 100% remotely, working in a high-growth international B2B SaaS, in which all members love to create, work in teams, analyze and help Community Managers make their work easier. Your mission is to become the dedicated owner of application, cloud and AI security at Metricool, relieving our Senior Developers and Leads from manual security reviews and building specialized security management across our core monolith (JavaEE, Spring Security, Vue), AWS infrastructure, AI-powered features and internal compliance frameworks (ISO *, SOC 2). As Senior Security Engineer, Application & Platform Security: Harden Spring Security, JavaEE filters, CORS, anti-CSRF protections, SameSite/ cookie flags, and strict CSP headers. AI Security & Testing: Run threat modeling and vulnerability testing on our AI/LLM features, protecting against the OWASP Top 10 for LLMs: prompt injection, data poisoning, data leakage, insecure output handling, and API abuse. Compliance & Auditing (ISO * / SOC 2): Define, audit and collect technical evidence for compliance controls (access management, encryption at rest and in transit, incident logs), lead ISO * and SOC 2 audits, and evaluate third?party vendor risk. Infrastructure & Cloud Security: Configure AWS load balancers, Nginx, Tomcat, container security (Docker), and enforcement. Code Reviews & Audits: Run regular code reviews, secret?detection audits, and third?party dependency reviews (Maven, Node.js). Build automated security checks (SAST/DAST/ZAP) into our CI/CD pipelines. Cross-functional Alignment: Work closely with Senior Developers and Leads to bring security into the development process from the start,



rather than bolting it on afterward. Document controls, evidence and runbooks so compliance stays audit?Drive a security?Gain full context of the monolith architecture, the AWS stack and our current compliance posture. Complete AI feature threat modeling, execute security header hardening, and set up the ISO */ SOC 2 evidence collection matrix. Own platform security end to end, keep compliance continuous and seamless, and lead the secure adoption of new AI technologies. A senior profile, confident owning security end-to-end across application code, cloud infrastructure and compliance, not just reviewing it on paper. Professional fluency in Spanish (mandatory) and English. JavaEE, Spring Security, Vue.js, Node.js, Docker, OWASP ZAP, AWS, Linux, MySQL, Maven, Git/Bitbucket. AI & Security: Understanding of the OWASP Top 10 for LLM Applications, AI data privacy, and secure API/prompt engineering. Knowledge of ISO/IEC * ISMS controls, SOC 2 Type II Trust Services Criteria (security, availability, confidentiality), and vendor risk assessments. Hands?on mindset: comfortable writing and reviewing code, not a paper compliance auditor. Pragmatic approach to security: applies controls without imposing heavy bureaucratic overhead on development speed. Genuine curiosity about emerging risks, especially around GenAI/LLM adoption in software platforms. Truly Remote: Work from wherever you're most productive. Health Insurance: We've got you covered so you can work with peace of mind. We're an international team speaking English, Spanish, French, and German. The Epic Weekend: Once a year, we all get together in person to hang out, touch grass, and remind ourselves we're not just avatars on Slack.

Salary:
We are actively working to align our budgets with market standards, offering highly competitive salary packages. growing company. Second interview (60 minutes) with Marcos Cacabelos: a deep dive on SAST/DAST/ZAP tools, AI testing scenarios, and ISO */SOC 2 practical cases. #

📌 Senior Security Engineer (Barcelona)
🏢 Coberon Chronos
📍 Barcelona