alexis-image

Hi, I'm Alexis Sanmiguel

Software engineer

3+ years of experience building scalable B2B applications for customs, logistics, and operations. Specialized in enterprise-grade architectures (multi-tenant, RBAC, CI/CD) with hands-on expertise in cloud integrations.

From Tamaulipas, Mexico, I deliver high-quality solutions that automate complex workflows and improve operational efficiency across development stages.

Work Experience

Mythril - TMS Platform

Freelance Fullstack Developer

November 2025 - Present

Built a TMS platform from scratch that centralizes ground and maritime logistics for freight companies. Features automated trip management, real-time GPS tracking via Samsara, CFDI invoicing with Carta Porte compliance, and AI-powered expense capture with Gemini Vision. Architecture includes RBAC and background job processing.

Tech Stack

NestJS, TypeScript, PostgreSQL, React, Next.js, PWA, Samsara API, FacturAPI, RBAC, BullMQ, Redis, Cloudflare R2, Gemini Vision API, Webhooks, CI/CD.

Rapimex - Shipping Management System

Freelance Fullstack Developer

March 2025 - Present

B2B logistics platform that centralized shipping operations, replacing manual Excel/WhatsApp workflows. Features smart bulk parcel upload via Excel, multi-carrier integration for real-time quoting, and automated label generation. Includes a PWA with push notifications, barcode scanning, SMS/WhatsApp alerts via Twilio, and an admin metrics dashboard.

Tech Stack

NestJS, React, TypeScript, PostgreSQL, Prisma, BullMQ, Redis, PWA, Twilio, Google Maps API, Stripe, RBAC, Excel Processing, Real-time Notifications.

Muris Salinas Consultores

Software Engineer

January 2024 - Present

Developed a software to support customs operations, including container tracking, invoice processing (CFDI), and integration with external databases/systems like government platforms and SAT. Improved data processing, storage, and system efficiency. Collaborated on developing features for user roles and internal workflows.

Tech Stack

React, NodeJS, MySQL, Session Auth, Redis (Cache and Queue), RBAC, CI/CD, AWS, Real Time Data Streaming.

Aduasis Logistica

Junior Developer

January 2023 - October 2024

Modify existing software developed in PowerBuilder to fix errors and optimize efficiency. Add new features, modules and functionalities. Generate detailed reports to document software changes and progress. Store, retrieve, and manipulate data from Microsoft SQL Server database.

Tech Stack

Powerbuilder, Microsoft SQL Server.

Gran Logia de Tamaulipas

Freelance Application

September 2023

Fullstack application with +1000 active users across Tamaulipas, for the "Gran Logia de Tamaulipas". You can see more details about the project on the Projects Section.

Tech Stack

Typescript, Prisma, React, NodeJS, Express, MySQL, JWT, Redux, QR Code, Web Sockets.

Recent projects

Skills

Languages

JavaScript

JavaScript

TypeScript

TypeScript

Python

Python

C#

C#

HTML

HTML

CSS

CSS

Technologies

React

React

Node.js

Node.js

Express

Express

Redux

Redux

REST API

REST API

MySQL

MySQL

GitHub

GitHub

Astro

Astro

Redis

Redis

GitHub Actions

GitHub Actions

JWT

JWT

Session Auth

Session Auth

NestJS

NestJS

PostgreSQL

PostgreSQL

Prisma

Prisma

NextJS

NextJS

SQL Server

SQL Server

Other

AWS

AWS

Cloudflare R2

Cloudflare R2

Sentry

Sentry

CI/CD

CI/CD

Microservices

Microservices

Data Structures

Data Structures

Stripe

Stripe

Twilio

Twilio

Google Maps API

Google Maps API

Contact me

Feel free to contact me any time. I will get back to you as soon as I can!

Email

[email protected]