Ulises Alejandro MORA QUINTANA

Full Stack Developer / Cloud Engineer

Active Work Permit in Spain (TIE) Madrid, España , postal Code: 28015

Summary

Senior Full Stack Architect (+5 years) specializing in designing high-availability distributed systems. Expert in decoupling monoliths into scalable microservices by strictly applying Hexagonal Architecture, DDD, and SOLID principles. Frontend Authority: I elevate engineering standards in Angular (Security with Guards/Interceptors, NgRx) and React (Composition Patterns, Performance Tuning, Redux/Zustand), prioritizing rendering optimization. Backend & Data Performance: I architect polyglot solutions in NestJS, .NET, and Django, resolving bottlenecks through advanced strategies such as Caching (Redis), Connection Pooling, and CQRS. I implement real-time communication with Sockets and SQL/NoSQL databases. Cloud & Innovation: Deployment of immutable infrastructure (Docker) on AWS (ECS, EKS) and Azure. Pioneer in integrating AI/LLM capabilities with LangChain into business workflows. I guarantee total quality with Advanced Testing suites (Cypress, Jest, xUnit).

Languages

English - B2 professional competence

Spanish - Native

Skills

.Net Asp Net (4+ years)
C# (4+ years)
Angular (4+ years)
HTML (5+ years)
CSS (5+ years)
JavaScript (5+ years)
TypeScript (5+ years)
React (4+ years)
Next.js (3+ years)
React-Native (1+ years)
Ionic (1+ years)
Node (5+ years)
Nestjs (4+ years)
Express (4+ years)
AWS (4+ years)
Docker (4+ years)
Terraform (1 year)
Postgres (5+ years)
Mongo DB (3+ years)
Redis (3+ years)
Rabbitmq (2+ years)
Git (5+ years)
GitHub (5+ years)
Python (3+ years)
Django (3+ years)
MySQL (5+ years)
SQLServer (4+ years)
Azure (1+ years)
GC (1+ years)

Experience

Otra Cosa (Spain - Remote)

Senior Web Developer (Next.js & React)

5/1/2025 - Actual

● I lead the full development lifecycle of the corporate web platform using the Next.js (React) and Node.js ecosystem.
● Implementation of modern architecture based on reusable components and Server Side Rendering (SSR) to maximize performance and SEO.
● Intensive use of TypeScript to ensure robust, scalable, and bug-free code.
● Configuration of automated deployment pipelines (CI/CD) and optimization of Core Web Vitals.
● Stack: Next.js, React, TypeScript, Node.js, Tailwind CSS.
Autocom (Mexico - Remote)

Senior Software Engineer (.NET & Cloud)

6/1/2023 - 7/1/2025

● Architected high-availability backend solutions using ASP.NET Core, serving as the backbone for critical transactional systems.
● Implemented AWS API Gateway to manage traffic and secure microservices endpoints deployed on AWS Fargate (ECS) via Docker containers.
● Established asynchronous communication layers using AWS SQS and SNS to decouple services and ensure data reliability.
● Integrated Python scripts and Lambdas to automate cloud infrastructure and process background data, reducing manual operational load by 40%.
● Developed and maintained internal dashboards using React and Angular.
● Orchestrated a polyglot persistence layer (SQL Server, MongoDB, Redis) and established CI/CD pipelines.
GPT4SALES (Mexico, USA Remote) Freelance Project

Backend Lead & Architect (NestJS & AI)

1/1/2024 - 11/1/2024

● Designed a scalable microservices architecture implementing Apollo Federation 2 with NestJS and GraphQL as a unified API Gateway.
● Engineered a multi-layer LLM pipeline using Python (LangChain) that processes user inputs through distinct stages: initial intent detection, context filtering, and routing to specialized flows, optimizing accuracy and token usage.
● Integrated the Meta API (WhatsApp Business) to orchestrate omnichannel chatbots.
● Implemented Stripe for subscription management.
● Orchestrated infrastructure with Terraform and Docker on AWS ECS Fargate/S3.
● Integrated RabbitMQ for event-driven communication and Redis for caching.
● Stack: CSS, SASS, SCSS, MATERIAL UI, NEXTJS.
PartsBadger (USA - remote)

Fullstack Developer (Python & React)

5/1/2023 - 12/1/2023

● Engineered the core application logic using Django (Python), focusing on ORM performance optimization and reducing N+1 query issues.
● Developed a highly interactive frontend with React and Angular, adhering to Domain-Driven Design (DDD) principles.
● Decoupled heavy backend processes into asynchronous queues using Celery and Redis.
● Implemented interactive 3D model visualizations (Three.js) integrated directly with Django endpoints.
● Maintained legacy microservices and added new Python-based functionalities to the existing ecosystem.
● Stack: CSS, SASS, SCSS, SHADCN, TAILWIND.
OmniDoc (Mexico City)

Fullstack Lead Developer

5/1/2022 - 4/30/2023

● Led the strategic migration of the main medical application frontend from Angular to React and Redux Toolkit (RTK), improving performance while maintaining legacy modules in Angular.
● Mentored a team of 2 mid-level developers, applying best practices such as SOLID principles, KISS, and Clean Architecture.
● Built resilient microservices using NestJS and .NET Core.
● Integrated Stripe for secure payment processing within the medical platform.
● Collaborated on backend data processing using Python and designed schemas in PostgreSQL/AWS Lambda.
● Methodologies: TDD. Technologies: CSS, SASS, SCSS, ANGULAR MATERIAL, CHAKRA V2.
Bambú Mobile (Mexico - Remote)

Fullstack Developer

2/1/2020 - 4/30/2022

● Delivered high-impact solutions for enterprise clients including Santander, Office Depot, and the Government of Mexico.
● Integrated complex third-party ecosystems via REST and SOAP APIs, including banking systems and payment gateways.
● Developed new services with Express.js (Node.js) and ASP.NET Core, while maintaining legacy Java Spring applications.
● Deployed on AWS (EC2, S3, Elastic Beanstalk) and used Firebase Realtime Database and MongoDB for data storage.
● Implemented caching with Redis and engineered mobile applications with Ionic and React Native.
● Database Management: RDS PostgreSQL, MySQL, Microsoft SQL Server, MongoDB, Amazon DynamoDB, Firestore, and Redis.
● Stack: TDD, CSS, SASS, SCSS, ANGULAR MATERIAL, MATERIAL UI.
Bblazar Freelance Projects

Fullstack Web3 Developer

1/1/2018 - Actual

● Developed a high-performance e-commerce solution with Angular Universal (SSR) and a Python (Django) backend for specific inventory management modules.
● Built decentralized applications (DApps) using Next.js and Web3.js to interact with Ethereum Smart Contracts.
● Created immersive 3D web experiences using React Three Fiber.
● Implemented custom frontend solutions using React, optimized for high SEO performance.

Education

UNAM - FI

1/1/2015 - 9/1/2019

Computer Engineer - UNAM, Mexico city

Certificates

Java - basic/intermediate / UNAM - PROTECO - (3 months)

PHP - basic/intermediate / UNAM - PROTECO - (3 months)

ANDROID - basic/intermediate / UNAM - PROTECO - (3 months)

IOS - basic/intermediate / UNAM - PROTECO - (3 months)

PYTHON - basic/intermediate / UNAM - PROTECO - (3 months)

Entrepreneurship course for startups Start Up Mexico - (6 months )

Cybersecurity Professional Certificate National Autonomous University of Mexico (UNAM) - (7 months )