Juan José Tzun MonterrosoFull Stack Developer
ENES

Professional portfolio · juantzun.dev

I build full-stack web platforms focused on operations, data, and applied AI.

I am a full-stack developer with experience in Java, Spring Boot, Angular, React, PostgreSQL, Docker, and AI-powered solutions. This portfolio brings together projects designed as real products, with clear architecture, deployment strategy, and practical use cases.

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6+

years of experience

Java logo

Java

robust backends

Angular logo

Angular

productive frontends

React logo

React

reactive frontends

AI logo

AI

RAG and agents

Portfolio

Projects designed as real products

Each project is designed to showcase full-stack architecture, product thinking, deployment, data, applied AI, and real-world problem solving.

Representative dashboard preview for TAMIAS.
In development
01

TAMIAS

Operational management platform for small rental businesses: reservations, maintenance, purchases, inventory, documents, and an AI assistant.

AngularSpring BootPostgreSQLAWS S3Spring AIChromaOpenAIDocker
  • Rental operations
  • AI with RAG
  • Private files in S3
Live Demo
Representative document and AI search preview for KnowledgeHub AI.
Planned
02

KnowledgeHub AI

AI-powered document management system with permissions, semantic search, RAG, and a chatbot over business documents.

AngularSpring BootPostgreSQLDockerSpring AIOllamaChromaRAGOpenAIAWS S3
  • Document management
  • Permissions
  • Chatbot over files
Live Demo
Representative electoral data analytics preview.
Planned
03

Election Analytics Platform

Platform for processing and visualizing massive electoral datasets with batch pipelines, dashboards, and monitoring.

Spring BatchSpring CloudPostgreSQLAngularDockerDatadog
  • Massive processing
  • Dashboards
  • Observability
Live Demo
Representative deployment and incident visibility preview for DevFlow.
Planned
04

DevFlow

Platform for visibility into deployments, pipelines, errors, incidents, and engineering team metrics.

ReactSpring BootPostgreSQLGitHub APIDocker
  • Deploy visibility
  • Incidents
  • Technical metrics
Live Demo
Representative AI agents and tool connections preview for MCP Agent Marketplace.
Planned
05

MCP Agent Marketplace

AI agents connected to real tools through MCP, designed to automate technical and operational workflows.

Spring AIOpenAIMCPOllamaDockerAngular
  • Real MCP
  • AI agents
  • Connected tools
Live Demo
Representative SQL query performance analysis preview.
Planned
06

SQL Performance Lab

Laboratory for SQL query analysis, execution plans, index recommendations, and performance comparison.

Spring BootPostgreSQLOpenAIAngular
  • Query analysis
  • Indexes
  • Performance tuning
Live Demo
Representative ERP operations preview for Proteus 2.0.
Planned
07

Proteus 2.0

Modern ERP based on a real system: inventory, billing, credits, permissions, reports, auditing, and an AI assistant.

AngularSpring BootPostgreSQLDockerOpenAI
  • ERP
  • Auditing
  • AI assistant
Live Demo