Ulises Rosas

Senior Software Engineer with 10+ years delivering mobile and full-stack products across IoT, Fitness, Logistics and Healthcare.

Get in TouchView Projects
React
TypeScript
React Native
Kotlin
Swift
Next.js
Android
JavaScript
Tailwind CSS
Vue.js
Angular
iOS
Ionic
HTML5 & CSS3
Node.js
Python
AWS
Docker
PostgreSQL / SQL
MongoDB
Firebase
C# · ASP.NET
Java
AI Agents & RAG
n8n Automation
CI/CD · GitHub Actions
Bluetooth BLE
MQTT
GraphQL

Portfolio

Fitness App with AI-powered recommendations

Fitness App with AI-powered recommendations

iOS/Android fitness app with AI-personalized recommendations and Bluetooth data capture.

React Native · Firebase · N8N · Bluetooth BLE

Vital Signs Dashboard

Vital Signs Dashboard

Real-time vital signs monitor for clinics, with push alerts for staff.

Next.js · Node.js · Docker

Automation Platform for IoT

Automation Platform for IoT

Tracking and automation platform with connected-device integration.

React · MQTT · REST APIs

Booking Management Dashboard

Booking Management Dashboard

Booking and management product with an admin dashboard and optimized user flow.

React · Node.js · SQL

Companion App for alive backing-track player

Companion App for alive backing-track player

Bluetooth remote for a live backing-track player: connects to the BandMate hardware unit, manages playlists, and controls a per-channel mixer with faders, solo, and mute.

React Native · MQTT

Food Allergy App

Food Allergy App

Mobile food-allergy management app with meal tracking, allergen product lookup, and personalized diet profiles.

Android · Kotlin · REST APIs

Immunotherapy Companion App

Immunotherapy Companion App

Allergen Immunotherapy companion app for pediatric and adult OIT patients: daily dose logging, symptom monitoring, and caregiver management.

Android · Kotlin · REST APIs

Clinical Monitoring dashboard

Clinical Monitoring dashboard

Clinical monitoring and patient management web platform for allergy clinics to track immunotherapy dosing, adverse reaction alerts, and protocol guides.

Next.js · React · AWS Amplify · DynamoDB

Car Shows App

Car Shows App

Car enthusiast platform for discovering auto shows and meets, tracking garage builds, and community events.

Android · Google Maps · Firebase

Logistics and Fleet Management

Logistics and Fleet Management

Logistics and fleet management app for 500+ freight operators with live GPS route tracking, trip dispatch status, and performance metrics.

React Native · GPS Telemetry · ASP.NET · SQL

Fitness Booking Web

Fitness Booking Web

Boutique fitness booking web platform featuring multi-class scheduling, interactive spot reservations, and membership management.

React · Node.js · REST APIs · SQL

Hearables Web Site

Hearables Web Site

Operating system and developer platform for smart hearables and edge devices, enabling dynamic app downloads and multi-sensor audio algorithms.

Astro · React · Sass · Edge AI

AI & Workflow Automations

AI & Workflow Automations

Suite of production AI agents and automations built in n8n: Slack RAG knowledge bot, Cohere reranking pipeline, Chatwoot CRM integration, and Google Calendar agent.

n8n · LangChain · OpenAI · Cohere · Flowise · Slack · Webhooks

Experience

Professional experience

Sahuaro Labs LLC

U.S.sahuarolabs.com
2015 – 2026 · 11 yrs

Head of Software Engineering

May 2018 - April 2026

Led engineering and client delivery across distributed design, mobile, and web teams.

  • Led full-SDLC delivery for several client products across distributed design, mobile, and web teams.
  • Improved release output through mentorship, code review standards, shared architecture and CI/CD automation.
  • Enabled better product interaction by implementing analytics and in-app messaging.
  • Introduced stronger QA standards driving error detection and resolution quickly.
  • Automated GitHub Actions pipelines cutting deploy times to minutes.
  • Created Voice Agents to handle customer service, lead qualification and booking appointments.
  • Integrated AI Models into mobile and web applications.
  • Created Workflow automations for customer outbound campaigns.

Software Engineer

May 2015 - April 2018

Built BLE beacon platforms and location-based Android applications.

  • Created a Bluetooth Low Energy beacon platform for location-based marketing campaigns in physical stores.
  • Developed the Android application from requirements gathering through deployment.
  • Implemented BLE beacon technology to trigger location-based customer interactions.
  • Built a reusable Android SDK for location and connectivity services, minimizing integration time for product teams.
  • Established coding guidelines, code-review practices, and CI/CD processes to improve development consistency.

Education

B.S. in Software Engineering · Instituto Tecnológico de Sonora (ITSON), Mexico

Focus on Software Development Life Cycle (requirements, design, implementation, testing, deployment, maintenance).

Let's work together?

Available for freelance projects, technical consulting, and remote full-stack or mobile roles. Reach out and I'll reply within 24 hours.

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