United States

Back-end

AI/ML Engineering

Blockchain Developer Nanodegree

Data Structures And Algorithms Nanodegree

Bachelor of Engineering - BE

Android developer Nanodegree

Android Basics Nanodegree by Google

Joan Cabezas

Cofounder

Github

Product analytics

Product strategy

Problem-solving

AI/ML

Python

PostgreSQL

Node.js

Nest Js, Typescript, gRPC, AWS, Elastic Search.
Solidity, Blockchain indexing.

Created from scratch, and currently maintaining a distributed backend architecture, with multiple microservices developed using Golang and Python. 

- Frameworks: Go fiber and python FastAPI.
- Databases: Postgres, Redis, Firestore, and Datastore.
- Cloud: GCP, Cloud Run, Cloud Build, Deployment Manager, SQL, others.
- DevOps: GitLab CI/CD pipelines, Docker, GCP.
- Testing: Pytest, Intellij HTTP testing, Vegeta load testing.
- Others: Firebase auth and stripe payments.

The vision of enabling millions around the globe to hear better just blew my mind!

App architected with MVVM + Repository Pattern + Caching Layers with Room
Database, also using WorkerManager and Navigation components. Multiple threads management using coroutines for network requests and hearing aid programming heavy operations.

Using native C++ libraries through Android NDK, for Hearing Aid hardware interaction.
Fastlane deployment pipelines through Firebase distribution, TestLab, and Google Play.

- Developed and maintained multiple Flutter applications (iOS, Android, Web)
- Integrated Mapbox and Google Maps for real-time position tracking in Flutter.
- Collaborated building backend services using Fast API + Firestore  + Real-Time Database
- Worked with the AI & Engineering Team, developed the code for a Kotlin App for an Android Robot with video transmission and remote command execution (Teleoperation) using the Freedom Robotics Service.

Implementing awesome new cool features for our Android and iOS apps.

I pushed myself as hard as possible and in less than 6 weeks I was able to build a fully stable android app from 0 in Kotlin and based on an MVVM architecture, I implemented a lot of cool stuff like:

- Robot Video Streaming in-app using the Open Tok Library.
- Robot Location tracking, using Mapbox.
- Venmo and Stripe payment methods.
- Mixpanel and Amplitude for user tracking events and engagement.
- Intercom, customer support messaging platform.
- Instabug for app crashes and bug detection.

I built software for different sectors such as Road Concessions, Shopping Centers, importers, veterinaries, and doctors' offices. With languages such as Java, Kotlin, Flutter, Python. More specifically, during this time, I've:

- Implemented architecture components, such as Paging, Room, LiveData, ViewModel, etc.
- Applied different performance techniques (Render, Battery, and more)
- Developed apps based on different design patterns such as MVP and MVVM.
- Built different cross-platform apps using Flutter.
- Built Rest APIs using Python (Flask and Django) to facilitate access to different data sources.
- Managed data from SQL, Realm, Firestore, Redis.
- Deployed Python APIs using Digital Ocean and Heroku.

- Implemented caching from SQL Server using SQLite for offline app usage.
- Integrated and maintained, Firebase products such as Firestore, Auth, Storage.
- Managed data from APIs, and databases such as SQL Server, SQLite.
- Implemented different Google APIs, and multiple third-party libraries.
- Developed for different screen sizes and handled version control.

Joan Cabezas🇺🇸

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