<p>As Staff Engineer I was supporting 8 teams between iOS and Android and I was making sure the features we deliver had good quality, there were well architected and align between iOS and Android implementations.</p><p>I led projects to drive more revenue to the company and also projects to improve compilation times, application performance and fixed production issues with surgical precision.</p>

Staff Engineer

I’m a senior iOS engineer with 10+ years building and stabilizing production iOS apps in Swift (UIKit + SwiftUI). I specialize in debugging hard crashes, fixing state/race issues (Combine + async/await), improving performance/memory, and making releases smoother (CI/Xcode Cloud, symbolication, Crashlytics). I can review architecture, refactor safely, and help you ship features without regressions.

I build and stabilize Flutter apps for iOS/Android/macOS with a strong focus on production reliability: networking/retry behavior, state consistency, background/foreground edge cases, and crash/performance fixes. I’ve shipped multi-platform apps, integrated Firebase (Auth/Firestore/Functions/FCM), implemented subscriptions and notifications, and improved release quality with solid instrumentation and CI. I can help you debug faster, reduce crashes, and ship clean changes with confidence.

I have 5 years of experience with Django, building simple and large applications.

Some related technologies I had to use in past projects:

- Tastypie
- Django Rest Framework
- django-storages
- django-pipeline
- haystack
- ElasticSearch
- Redis



I start with ruby because one of my clients want a new project in rails framework. Then, I install rails and start to compare with Django to guide me about how create a web application who meets the requirements from my client

I start to work with PHP since 2005 using PHP 4 for an university project and like me the way to build and deploy an application using PHP.

Initially I learn a mix between PHP code + HTML + Javascript and I use to build different kinds of applications since simple PHP pages to ajax based applications.

Later I start to learn Zend Framework since version 0.9. I had few knowledge about Java and the framework remember me many of java things like classes, interfaces, etc.

I am sysadmin since 2007 when start to manage the email server for few companies in my country, later I have the chance to manage servers for spain company specialized in adult entertainment.

Since that, i have the change to work in many kind of projects installing a different configurations for PHP applications, python applications, etc

I have experience working with chef recipies, fabric scripts for automatic deployments, etc

Since 2005 when I start to work with PHP for an university project I love the web development specially with PHP (the most popular language in that year).

In 2010 I switch to Python looking something interesting and new and because I read many good comments in blog posts and other articles about Mozilla Foundation with Django, I think to use in a web project and was my new love.

I start to use git for my projects in 2010 when I migrate from bazaar

I am Full Stack Developer at www.ginzametrics.com. I introduce many new features to company platform, help to improve performance, develop new gems to connects with our providers API's, fix bugs, etc.

I am a great developer with many skills which can help you.

I start with python as way to make my job like sysadmin easier, I have the change to learn with a friends about sugar (Graphical Interface for OLPC) with that friends, they are part of sugar contributors and they teach me the initial things about python. Since that day, I still learning new things about create command line scripts, web applications, etc.

I had the chance to work in few interesting projects like realtime communication using gevent-socket.io

I have experience deploying rails applications, java applications (play framework) and Django applications

I have experience deploying different kind of applications since PHP blogs with apache and wordpress to complex Django and Rails applications

Personal details

Carlos A.

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