Building secure and innovative digital solutions that blend development, cybersecurity, blockchain technology, and artificial intelligence.
With over 5 years of experience, I have evolved from web application development to specializing in smart contract security, creating AI solutions, and researching vulnerabilities.
My goal is simple: to use technology to build a safer, more efficient, and decentralized digital ecosystem for everyone.
Development and auditing in Solidity and Rust for DeFi and NFTs, focused on security and optimization.
Vulnerability analysis and penetration testing on web, mobile, and network applications.
Development of AI-powered solutions, fine-tuning, and using LLMs for security and automation.
Experience with React (Native), Node.js, Python (Django, FastAPI), and secure databases.
The Hyper-realistic Arena for Critical Conversations
Master your most important conversations through voice-to-voice simulation against a behavioral AI. Practice negotiations, interviews, and difficult conversations to turn anxiety into confidence.
Currently in active development.
Javier Pérez [AI Persona]
"Your CV is interesting, but lacks direct e-commerce experience. Why should we hire you?"
You
"I understand. While my experience is academic, I've analyzed your top competitors and found an SEO opportunity..."
AI Coach Feed (Private):
Simulate any interlocutor. Define their personality, motivations, and knowledge to create a realistic and challenging practice partner.
Receive private, instant feedback during your simulation. The coach analyzes your tone, word choice, and strategy, guiding you to success.
After each session, get a detailed report with success metrics, sentiment analysis, and a clear roadmap for improvement.
Job Interviews
Sales & Negotiations
Leadership & Feedback
Conflict Resolution
A messaging platform built with an obsessive focus on privacy and resistance to forensic attacks, ensuring absolute confidentiality of communications.
Secure Messaging
Your conversations are protected with end-to-end encryption. Add contacts to start chatting securely.
A look at the layers that make Lume a digital fortress.
Implements Complete Forward Secrecy. Each message uses an ephemeral X25519 key pair and a one-time pre-key to derive a secret (ECDH). The payload is encrypted with XSalsa20-Poly1305.
Supports two modes: Block for small files (encrypted with XSalsa20) and Streaming, which uses XChaCha20-Poly1305 SecretStream to process large files in chunks with AEAD integrity.
Collective encryption ensures PFS per recipient. Each member has a unique, constantly ratcheting group key, and all messages are individually signed with Ed25519 to ensure authenticity.
Proactive analysis to detect root/jailbreak (using JailMonkey and searching for binaries like `su`), emulators (React Native DeviceInfo), and instrumentation hooks (Frida/Xposed).
Upon detecting a threat, a secure wipe (wipeAllData) is triggered, overwriting data with random values. This, combined with at-rest encryption, makes data recovery computationally infeasible, even with sophisticated forensic tools.
The REST API (Express/JWT) and WebSocket server act as a simple relay. No messages are stored, only encrypted metadata and pre-keys, ensuring the server cannot read the content.
A messaging app that uses AI to provide insights into communication patterns and relationships.
An LLM-based tool for detecting vulnerabilities in Solidity smart contracts.
A multi-factor authentication system with AI-based behavioral analysis.
Have an interesting project? Need consulting on security, blockchain, or AI?
Don't hesitate to reach out.