David Manjarres
David Manjarres - Full Stack Developer

About Me

FULL-STACK DEVELOPER • CLOUD ENGINEER • ECUADOR 🇪🇨

Building scalable, cloud-native applications with Spring Boot, NestJS, React, and TypeScript.

Designing RESTful APIs with Clean & Hexagonal Architecture, implementing CI/CD pipelines and microservices.

Experienced with PostgreSQL, MySQL, MongoDB, Redis for relational and NoSQL solutions.

Proficient in message brokers (RabbitMQ), containerization (Docker), cloud deployment (Azure), and building APIs with Spring Boot & NestJS.

Software Engineering Degree (2021-2026) at Technical University of Ambato, Ecuador.

Passionate about writing maintainable, high-quality code and solving complex problems.

Areas of Expertise

Backend Architecture Cloud Infrastructure Microservices API Design Database Optimization CI/CD Pipelines System Integration

Email: davidmanjarres2004@gmail.com

Place:Ambato, Ecuador

Skills & Abilities

Backend Development

Java Java
Spring Boot Spring Boot
Node.js Node.js
Express.js Express.js
NestJS NestJS
Laravel Laravel
.NET .NET
GraphQL GraphQL

Databases & Cache

PostgreSQL PostgreSQL
MySQL MySQL
MongoDB MongoDB
Redis Redis
SQL Server SQL Server
Oracle Oracle

Frontend Development

React React
Angular Angular
Next.js Next.js
React Native React Native
TypeScript TypeScript
JavaScript JavaScript
TailwindCSS TailwindCSS
Bootstrap Bootstrap
Sass Sass
Figma Figma

Cloud & DevOps

Azure Azure
Docker Docker
Kubernetes Kubernetes
Jenkins Jenkins
GitHub Actions GitHub Actions
Git Git
Linux Linux
Postman Postman

Message Brokers & Event Streaming

RabbitMQ RabbitMQ
Apache Kafka Apache Kafka

My Education & Certificates

Education is not the learning of facts, but the training of the mind to think.

Universidad Técnica de Ambato

Universidad Técnica de Ambato

Software Engineering

2021 - Now

During my time at the Universidad Técnica de Ambato, I have gained a solid foundation in software development, including programming, algorithms, and system design. I have also participated in various projects that have honed my problem-solving and teamwork skills.

GraphQL and Node.js

GraphQL and Node.js: Modern and efficient applications

Udemy - 2024

This course provided me with advanced skills in building modern and efficient applications using GraphQL and Node.js. I learned how to design scalable APIs and integrate them with front-end frameworks.

FullStack and Desktop Programming

FullStack and Desktop Programming from ZERO to PROFESSIONAL

Udemy - 2022

In this course, I mastered full-stack development, from front-end technologies like HTML, CSS, and JavaScript to back-end frameworks like Node.js and databases. I also gained experience in desktop application development.

EF SET Certificate

B2 Upper Intermediate

EF SET - 2025

This certification demonstrates my proficiency in English at the B2 level, enabling me to communicate effectively in professional and academic environments.

My Projects

Fleet & Driver Management Platform

Fleet & Driver Management Platform

  • Architecture: Distributed microservices with NestJS, RabbitMQ, and gRPC.
  • Performance: Real-time GPS tracking and reporting for fleet operations.
  • Infrastructure: Dockerized environment with Eureka Service Discovery.
NestJS PostgreSQL RabbitMQ gRPC Kubernetes Elasticsearch Kibana Swagger React Docker
Backend Source Code Frontend Source Code
E-Commerce Marketplace Platform

E-Commerce Marketplace Platform

  • Performance: 85% faster response (300ms → 45ms) via Redis caching and ~70% query reduction.
  • Quality: 90% test coverage with Jenkins CI/CD pipeline.
  • Cloud: Deployed on Azure Container Apps with Azure Blob Storage for media.
Spring Boot PostgreSQL Redis Swagger React TypeScript TailwindCSS Docker Jenkins Azure
Backend Source Code Frontend Source Code
Medical Clinic Management System

Medical Clinic Management System

  • Impact: 60% faster medical record access via 3NF normalization.
  • Architecture: Spring Boot backend following Clean Architecture.
  • Security: RBAC & JWT authentication for HIPAA compliance.
Spring Boot React Native PostgreSQL Redis Swagger Docker TailwindCSS
Source Code
Inventory & Audits System

Inventory & Audits System

  • Compliance: Automated PDF reports for judicial audits.
  • Role Management: Custom role-based access for different state entities.
  • Stack: Laravel + React with Material UI.
Laravel React MySQL Swagger Material UI
Source Code
SmartNotes Microservices

SmartNotes Microservices

  • Architecture: Event-driven communication with RabbitMQ.
  • Gateway: NGINX API Gateway for routing and auth.
  • Database: Hybrid data storage with MongoDB and PostgreSQL.
NestJS RabbitMQ MongoDB Docker
Source Code
UTA Elections Platform

UTA Elections Platform

  • Engagement: Real-time stats and news for university stakeholders.
  • Design: Responsive UI with Bootstrap and Laravel.
Laravel Bootstrap MySQL
Source Code
My Creative Portfolio

My Creative Portfolio

  • Features: Project management and community engagement.
  • Tech: PHP, MySQL, and Axios for dynamic interactions.
PHP MySQL JavaScript
Source Code
Pixel1 Quest

Pixel1 Quest

  • Concept: Applying SOLID principles to Game Development.
  • Patterns: Factory, Strategy, Observer, and Event Bus implementation.
  • Tech: Managed state persistence with SQLite.
C# Unity SQLite
Source Code
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Let's Work Together

I'm always interested in hearing about new projects and opportunities. Whether you need a full-stack solution, backend architecture, or frontend excellence, let's create something amazing together.

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4+Years Experience
10+Projects Delivered
12+Backend Services Built
80%Max Test Coverage (E-Commerce)