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Alvaro Quintana — Senior Full-Stack Engineer, Madrid

HI, I'M ALVARO

Senior Full-Stack Engineer — Mobile, Web & AI

Full-stack engineer with over 12 years of experience building digital products end-to-end — from native mobile apps (Android, iOS) to web platforms and CI/CD pipelines. Currently leading development at B-FY, a passwordless IDaaS platform protecting businesses against identity fraud.

Deep expertise in the Kotlin ecosystem: Jetpack Compose, Compose Multiplatform, and KMP for sharing business logic across Android, iOS, web, and desktop. I design scalable architectures with clean code built to last.

On the web side, I build with Astro, Next.js, React, and Tailwind CSS. Recently designed and implemented a full CI/CD pipeline in Jenkins featuring E2E tests with Appium, static analysis via Detekt, OWASP security scanning, automated docs with Dokka, distribution through Firebase App Distribution, and Jira integration — cutting release time and ensuring quality on every build.

Specialized in secure applications: biometric solutions, encryption, and authentication protocols. My hands-on IDaaS experience gives me a unique perspective on security, privacy, and regulatory compliance.

My next frontier: AI Agent Orchestration with Claude, LangChain, MCP, and RAG. I build intelligent systems that integrate AI into real workflows — from code assistants to automated data pipelines.

+12

YEARS EXPERIENCE

+7

LEADING B-FY

4

PLATFORMS

// THIS SITE IS BUILT WITH

ASTRO + TAILWIND CSS

CAREER TIMELINE

From startup developer to full-stack engineer to AI specialist

TheRanking

TheRanking

2013 - 2015

Android & iOS Developer

Cross-platform development with Titanium. Built startup apps with social integrations.

TitaniumJavaREST APIsGit
STARTUP
TalentoMOBILE

TalentoMOBILE

2015 - 2017

Senior Mobile Developer

Santander Bank projects: biometric signature, face recognition, voice commands, NFC.

AndroidBiometricsvoice commandsSecurity
CONSULTANT
Santander UK

Santander UK

2017

Senior Developer & Android Specialist

On-site in Milton Keynes. Retail & Business apps with Kotlin, NFC, OCR, geolocation.

KotlinNFCOCRMVP
CORPORATE
B-FY

B-FY

2018 - Present

App Development Director

Passwordless IDaaS platform for identity protection against impersonation. Leading SDK development across Android, iOS and Desktop with KMP.

KMPiOSComposeKtor
STARTUP
AI

AI Specialist

2024 - Present

AI Agent Orchestrator

Building intelligent systems with LLMs, autonomous agents, and AI-powered workflows.

ClaudeLangChainMCPRAG
SPECIALIST

+12

Years in Tech

+7

Years at B-FY

5

Companies

< LATEST AI PROJECTS />

Showcasing my latest AI-powered applications

LIVE

Cartera Investing

Personal Financial Dashboard

Comprehensive financial dashboard with 37+ specialized modules: sector heatmaps, concentration analysis, equity curve, decision tracking, tax reports and more. Dual data pipeline: automated loading from NAS via Python bot that downloads CSVs from Investing, or manual CSV file upload for the public area.

KEY FEATURES

37+ Analytics Modules Sector Heatmap Equity Curve & CAGR Tax Reports

TECH STACK

Next.js 16React 19FirebaseRechartsZustandTailwind CSS 4TypeScriptFramer Motion
Click to expand →
LIVE

RAG Chatbot

AI Assistant

Smart chatbot that answers questions about my career, technical skills and projects. Uses RAG architecture with vector embeddings to provide accurate, contextual responses to recruiters and companies.

KEY FEATURES

RAG Architecture Vector Embeddings 100% Serverless Contextual Answers

TECH STACK

Cloudflare WorkersVectorizeLlama 3.1BGE Embeddings
> View on GitHub Click to expand →

Translation & Voice AI

100% Local Processing

Desktop app that converts documents (PDF, Word, TXT) into high-quality speech using local AI models. No cloud, no costs, full privacy.

KEY FEATURES

50+ Neural Voices 200+ Languages Offline Processing Document Support

TECH STACK

PythonPyTorchONNXKokoro-82MNLLB-200
> View on GitHub Click to expand →
Discontinued

Portfolio & Stock

Investment Management Platform with Automated Alerts

Full-stack platform that consolidates investments from multiple brokers, generates tax reports, analyzes fundamentals with AI and sends intelligent daily and weekly alerts about target prices and significant market movements. Secure architecture with Cloud Functions as middleware.

KEY FEATURES

Automated n8n Alerts AI Fundamental Analysis Secure Architecture Valuation Ratios

TECH STACK

Next.js 15FirebaseCloud Functionsn8nDockerGemini 2.0Perplexity AITypeScript
Click to expand →

Web Scraper Pro

Scraper with Anti-Detection

Modern web scraper with anti-detection capabilities. Captures JavaScript-rendered pages and exports to PDF, HTML, TXT, or JSON.

KEY FEATURES

Anti-Detection JS Rendering Multi-Format Export Camoufox Fallback

TECH STACK

PythonFastAPIPlaywrightCamoufoxDocker
> View on GitHub Click to expand →

Lotto Scan

AI-Powered OCR Scanner

Kotlin Multiplatform app that scans and manages Spanish lottery tickets using AI-powered OCR.

KEY FEATURES

Multi-Lottery Support Offline OCR Confidence Scoring Local Storage

TECH STACK

KotlinCompose MPPaddleOCRONNXSQLDelight
> View on GitHub Click to expand →

YouTube Downloader

Downloader with AI Summaries

Modern YouTube downloader with AI-powered video summaries. Features a glassmorphism UI, video/audio extraction, and multi-provider AI support.

KEY FEATURES

AI Summaries Video/Audio Extraction Glassmorphism UI Multi-Format

TECH STACK

PythonFastAPIPerplexity AIJavaScriptHTML/CSS
> View on GitHub Click to expand →

Chart Analyzer

Real-time Market Intelligence

Full-stack platform integrating AI agents for financial analysis. Combines news search with technical chart analysis for investors.

KEY FEATURES

Real-time News AI Chart Analysis Pattern Detection Technical Indicators

TECH STACK

Next.jsPerplexity AIGemini 2.0TypeScript
> View on GitHub Click to expand →

SKILLS MATRIX

Mobile & Native

Kotlin 95%
Jetpack Compose 92%
KMP 90%
Android SDK 88%
iOS / Swift 70%
Flutter 65%

Web & Backend

Next.js / React 90%
TypeScript 90%
REST / GraphQL 88%
Python 88%
Firebase 85%
Astro / Tailwind 85%

AI & DevOps

Claude / Anthropic 90%
Prompt Engineering 88%
Docker / CI-CD 88%
LangChain 85%
MCP / RAG 83%
n8n / Pen-testing 78%

CONNECT

$ whoami

alvaro_quintana

$ cat contact.txt

Email: Email copied

Location: Madrid, Spain (Remote)

$ cat links.txt

Open to Senior/Staff roles • Remote • Full-Stack / Mobile / AI