Andrés Geyer

About

More than code, I design end-to-end solutions. I am Andrés Geyer, a Computer Engineer with over 7 years of experience transforming complex requirements into scalable digital products. My approach goes beyond traditional development: I have the unique ability to unify hardware and software. I don't just build mobile apps (Flutter) or robust APIs (Node.js); I understand the entire process from the physical microcontroller to the cloud. Currently, I am strengthening my profile with postgraduate studies in Cybersecurity and AI, ensuring every line of code is functional, secure, and future-proof.

Senior Full Stack Developer

Experience: 7+ Years
Specialty: Full Stack & IoT
Education: B.S. Computer Engineering + Masters

Location: Caracas & Global Remote
Email: hola@andresgeyer.dev
Availability: Open to new projects

Skills

• Flutter (Expert): Cross-platform, GetX, WebSockets.

• Native Android: Java & Kotlin (Android Studio).

• React & React Native: Web and Mobile development.

• Web Core: HTML5, CSS3, JavaScript (ES6+), PWA.

• Node.js: Express, WebSockets, WebRTC, Cron Jobs.

• Architecture: Microservices, REST APIs, SSR.

• Backend Languages: Python (AI/Data), Java (Spring Boot), Ruby on Rails.

• Databases: PostgreSQL & MySQL (Relational), MongoDB (No-SQL).

• Data Science: DataWarehouse, Data Mining, AI Solutions.

• DevOps: Git, Docker, Linux Server Admin.

• Microcontrollers: ESP32/8266 (C#), PIC (Assembler/C++), ATMega.

• Hardware Design: KiCAD, Sprint Layout, PCB Design.

• Offensive Security: Pentesting (Parrot OS/Kali), Digital Forensics.

• Defensive Security: Data Encryption, Server Hardening.

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 in Cybersecurity

2025 - Present

CEUPE (European Graduate Center). Madrid, Spain.

B.S. in Computer Engineering

2014 - 2018

Andrés Bello Catholic University (UCAB). Caracas, Venezuela.

Additional Education

Diploma in Artificial Intelligence

2025

EGCI Management School

React Native Bootcamp

2018

Hezion Studios

Digital Forensics Course

2017

Lazarus IT Research Center

Professional Experience

Senior Freelance Full Stack Developer

2022 - Present

Independent Consultant

Designed and deployed native cross-platform mobile apps (Android/iOS) using Flutter, optimizing performance and UX/UI. Engineered secure RESTful APIs with Node.js and Python, integrating Deep Learning services for advanced data analysis. Developed custom hardware solutions using ESP32/PIC microcontrollers and C#, connecting physical devices with cloud infrastructure. Conducted penetration testing (Pentesting) and digital forensic analysis to ensure the integrity and security of mission-critical client data.

Mid-Senior Full Stack Developer

2019 - 2022

MGS Consultores. Caracas, Venezuela.

Led the development and maintenance of web platforms using Vue.js and Node.js, significantly improving system responsiveness. Managed Linux servers and advanced NGINX configurations, ensuring high availability for critical web services. Designed and optimized relational databases in PostgreSQL, restructuring them to handle massive data loads efficiently.

Developer Analyst

2018 - 2019

Ubii Pagos. Caracas, Venezuela.

Contributed to the development of Fintech payment solutions, focusing on secure transaction processing and mobile wallet integration. Collaborated in the implementation of layered security protocols for native Android financial applications.

Portfolio

A curated selection of my key technological projects. Several are successfully in production, while others are in advanced stages of their lifecycle. Together, they demonstrate that innovation thrives on complex challenges.