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Prieto User

@prietouser

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Cybersecurity engineer and full-stack developer bridging offensive security and software development.

Spain

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What I'm looking for

I seek roles combining AppSec, DevSecOps, or software engineering where I can build secure systems, automate detection/response, and work in collaborative, impact-driven teams.

I am a Cybersecurity Engineer and Full Stack Developer who blends offensive security experience with software engineering to build secure, resilient systems.

In my current SecOps and DevSecOps role I lead SOC incident response, optimize SIEM rules, and developed Python automation that cut triage time by 50%.

I have led ENS and ISO 27001 technical implementations and performed vulnerability assessments and pentesting on critical infrastructure to identify and remediate high-severity issues.

My development work spans Java, Python, C, React and cloud-native tooling; I build IaC security visualizers, serverless RAG chatbots, DevSecOps automation, and high-performance web and mobile platforms focused on performance and real-world impact.

Experience

Work history, roles, and key accomplishments

Current

Cybersecurity Engineer

Current

Centro de Servicios Avanzados (CSA)

Jan 2025 - Present (1 year 5 months)

Acted in SOC handling critical incidents with LUCIA (CCN-CERT), optimized SIEM rules to reduce false positives, and implemented DevSecOps automation that cut incident triage time by 50%; led ENS and ISO 27001 technical implementations for public sector clients.

SIEM Tuning Incident Response Vulnerability Management Pentesting ISO 27001 DevSecOps Threat Intelligence

Education

Degrees, certifications, and relevant coursework

Universidad Rey Juan Carlos

Bachelor of Engineering, Cybersecurity Engineering

2020 - 2025

Completed a Bachelor of Engineering in Cybersecurity Engineering with coursework and thesis focused on infrastructure-as-code security and vulnerability assessment.