Alex Sanchez Blabia

SERP - Emergency Response System

Real-time emergency management system with GPS tracking, resource allocation (ambulances, fire trucks, police), and operator coordination dashboards. Built in 36 hours at Talent Arena 2025 with Nokia network QoS integration for prioritizing emergency vehicle connectivity.

• Interactive Leaflet maps with real-time emergency and resource tracking
• Three role-based dashboards: Emergency Center, Operator, and Field Personnel
• PostgreSQL database with automatic seeding and Alembic migrations
• Nokia QoS API integration for emergency vehicle network prioritization

CatLink - AI EV Charger Agent

AI-powered agent that manages a network of electric vehicle chargers using Nokia Network as Code APIs. The agent evaluates charging requests through a multi-step verification pipeline: location verification, identity check, SIM swap fraud detection, and Quality-on-Demand activation. Real-time WebSocket streaming shows the AI's reasoning process live.

• Gemini-powered agentic AI with function calling for security verifications
• Real-time WebSocket panel showing AI decision-making process
• Interactive Leaflet map with charger stations across Barcelona
• Nokia API integration: Location, Number Verification, SIM Swap, QoD

WeatherMaster

Weather app inspired by Google Pixel Weather, built with Flutter. I'm an active contributor and maintainer with multiple merged pull requests improving core functionality.

• PR #533: Improved model picker to show temperature at a glance
• PR #534: Proper handling of null values in daily weather lists
• Implemented fallback logic for missing data fields
• Performance optimizations across the codebase

mfkey - Flipper Zero Performance Optimization

Contributed a critical performance optimization to the mfkey application for Flipper Zero, achieving a 70x speed improvement in Mifare Classic key recovery. The optimization involved implementing write buffering for Static Encrypted Nested key candidates on a device with only 13 KB of free RAM.

// Before: Individual write per key candidate (slow)
keys_dict_add_key(program_state->cuid_dict, n->key.data, sizeof(MfClassicKey));

// After: Buffer keys in RAM, flush in batches (70x faster)
program_state->key_buffer[program_state->key_buffer_count] = n->key;
program_state->key_buffer_count++;
if (program_state->key_buffer_count >= program_state->key_buffer_size) {
    flush_key_buffer(program_state);  // Batch write to stream
}

• Batch write buffering with pre-allocated memory and manual hex conversion
• Dynamic buffer sizing based on available RAM (19 bytes per key total)
• Direct stream manipulation bypassing the dictionary API overhead
• Memory-safe implementation with proper cleanup on all exit paths

Apartaments Miquel

Tourist apartment website built for a real client. Fully responsive, SEO-optimized, currently live and in active use. Delivered as a complete product with galleries, property details, and booking information.

Corporate NAS & Network Design - Ismael Prego

Professional hardware implementation proposal for a corporate NAS oriented to collaborative 4K video editing. Designed for Ismael Prego (Spanish tech content creator). Included complete network architecture, hardware evaluation, bandwidth analysis, and detailed budgeting.

• Requirements analysis: 3-4 TB/month of 4K footage at 140 Mbps, 3+ simultaneous editors
• Hardware comparison: Synology RS422+ vs RS2423RP+, Ubiquiti switching, PCIe NICs
• Bandwidth proof: 10GbE Ethernet covers 5+ simultaneous 4K streams without fiber
• RAID6 configuration: 96 TB raw / 80 TB usable, tolerates 2 simultaneous disk failures
• Complete budget: 4,700 - 7,300 EUR across 4 configurations + UPS protection

Consulting engagement — deliverable is a private proposal document