About
I am a Computer Science Engineer and Master’s in Cybersecurity with over 7 years of experience developing, securing, and auditing complex software and hardware solutions. Specialized in the Full-Stack development lifecycle (robust architectures with Node.js, PostgreSQL databases, and cross-platform mobile ecosystems with Flutter) and implementing Security by Design. Hybrid profile with a proven track record in embedded systems engineering, IoT hardware design, industrial electronics, and digital forensics. Spanish national with immediate availability for international corporate relocation.
Software Engineer & Cybersecurity Specialist
- Experience: 7+ Years
- Specialty: Full Stack, Embedded & Security
- Education: B.S. Computer Science + MSc Cybersecurity
- Location: Caracas, Venezuela (Relocating to Spain)
- Email: hola@andresgeyer.dev
- Status: EU Passport Holder / Immediate Availability
Skills
A comprehensive overview of my technical stack, spanning robust software development, low-level hardware engineering, and advanced cybersecurity principles.
Mobile & Frontend Development
Cybersecurity & DevSecOps
Embedded Systems & Hardware Engineering
Backend & Database Architecture
Resume
Below is an overview of my core education, advanced training, and professional journey as an engineer. You can also download my full Resume in Spanish or in English.
Education
Master's Degree in Cybersecurity
2025 - 2026
Centro Europeo de Postgrado (CEUPE). Madrid, Spain.
Specialized in Pentesting, Cloud Security, and Digital Forensics. Focus on protecting critical infrastructure and ensuring data integrity.
Bachelor of Science in Computer Science / Software Engineering
2013 - 2018
Universidad Católica Andrés Bello (UCAB). Caracas, Venezuela.
Additional Education & Certifications
Digital Forensics Training Course
2017
Lazarus Computer Investigation Center
Professional Experience
Autonomous Full-Stack Developer
2023 - Present
Independent Consultant
- Cybersecurity & Digital Forensics: Executed AppSec audits, Pentesting under OWASP Top 10, and digital forensics for incident reconstruction.
- Backend & Databases: Designed and hardened RESTful APIs with Node.js (Express), Python, and WebSockets. Managed PostgreSQL using PL/SQL.
- Mobile & Frontend: Built fluid native and cross-platform mobile apps and web interfaces using Flutter, Dart, React Native, Vue.js, and PWAs.
Embedded Hardware Designer & Technology Integrator
2023 - Present
Autonomous Industrial Project
- Telemetry & Hardware Design: Developed the complete PCB architecture for the Trackify device, integrating GSM/GPRS, GPS, and OBD-II interfaces.
- Industrial Retrofitting: Designed and optimized electronic control systems to revive and automate Hartridge 700 heavy-duty diesel test benches.
- Firmware & Signals: Programmed PIC (ASM/C) and ATmega (C/C++ in Arduino IDE) microcontrollers, implementing digital modulation schemes (ASK/FSK).
Semi-Senior Full-Stack Developer
2019 - 2023
MGS Consultores C.A. Caracas, Venezuela.
- Led the development and maintenance of corporate web platforms using Vue.js and Node.js, optimizing system response times.
- Managed Linux servers and advanced NGINX configurations, ensuring high availability for critical business services.
- Designed and optimized relational databases in PostgreSQL, executing restructuring tasks to handle massive data loads.
Developer Analyst
2018 - 2019
Ubii Pagos C.A. Caracas, Venezuela.
- Developed "UB APP", a highly secure neobanking application using Android Studio (Java) for the financial transactional sector.
- Designed and implemented advanced encryption protocols for sensitive financial data and QR payment systems under banking security standards.
Services
High-tier engineering solutions designed to secure infrastructure, optimize critical hardware, and build resilient software architectures from the ground up.
Secure Software Architectures
Design and development of scalable, high-performance cross-platform mobile applications using Flutter, integrated with robust, high-availability Node.js backend infrastructures and hardened RESTful APIs under Security by Design principles.
Embedded Systems & Retrofitting
Bridging the gap between software and physical machinery. Expert in custom PCB architecture, lightweight cryptographic firmware for microcontrollers, and modernizing legacy industrial systems to ensure reliable data acquisition and control.
Advanced Cyber Security
Comprehensive offensive and defensive security consulting. Specializing in advanced penetration testing (Pentesting), application security auditing (AppSec OWASP Top 10), perimeter server hardening, and digital forensics for incident reconstruction.