Agustin Vazquez, Developer in Trevelin, Chubut Province, Argentina
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Agustin Vazquez

Verified Expert  in Engineering

Mobile Developer

Trevelin, Chubut Province, Argentina

Toptal member since January 21, 2019

Bio

As an entrepreneur, Agustin understands the importance of proactivity and results and has learned the meaning of responsibility and accountability. He's more of a generalist than a specialist, though he loves the detail and deep understanding that comes from intense focus and work on development projects.

Portfolio

CopilotIQ
React Native, React, Firebase, Twilio Programmable Video, Android, iOS, Mobile...
HUB International - TCG
iOS, React Native, Android, Amazon Cognito, Mobile Apps, Mobile, JavaScript 6...
Fetch.ai
React Native, React, Android, iOS, Auth0, Push Notifications, Sentry, CodePush...

Experience

  • Android - 14 years
  • iOS - 12 years
  • React Native - 8 years
  • MySQL - 5 years
  • Amazon Web Services (AWS) - 3 years
  • Spring Boot - 3 years
  • Flutter - 1 year
  • Appium - 1 year

Availability

Part-time

Preferred Environment

Xcode, Android Studio, Visual Studio Code (VS Code), MacOS

The most amazing...

...job I've done was intercommunicating Unity with React Native by using Native Modules to open a native view and callbacks for returning data to Unity.

Work Experience

React Native Developer

2022 - PRESENT
CopilotIQ
  • Created a user-facing app supported on Android, iOS, and the web, using the React Native for Web library that supported all different screen sizes (phone, tablet, and desktop).
  • Implemented Twilio Voice and Twilio Video modules on React Native and React (web).
  • Contributed to a React project (admin for nurses).
  • Enabled push notifications API, CodePush, and Google Analytics.
Technologies: React Native, React, Firebase, Twilio Programmable Video, Android, iOS, Mobile, Mobile Apps, JavaScript 6, TypeScript, APIs, GitHub, GitHub Actions, React Apollo, Apollo, 3D, Gradle, Jest, JavaScript, Mobile App Development, Front-end Architecture, GraphQL, User Experience (UX), CI/CD Pipelines, REST APIs, Monorepos, CodePush, Sentry, Redux Thunk, Xcode, Android Studio, Amazon S3 (AWS S3), Agile Software Development, Java, Git

React Native Developer

2022 - 2022
HUB International - TCG
  • Created a mobile app with website tools for employees. Learned to use AWS Cognito, Face ID, and Multifactor Authentication.
  • Added push notifications, CodePush, and Sentry for crash detection.
  • Added several apps with the same code source supporting different UI colors with Android Flavors and Xcode Targets.
  • Added deep linking and universal linking so the app opens when entering the website.
Technologies: iOS, React Native, Android, Amazon Cognito, Mobile Apps, Mobile, JavaScript 6, TypeScript, APIs, GitHub, Gradle, JavaScript, Mobile App Development, Front-end Architecture, User Experience (UX), REST APIs, Redux Thunk, Xcode, Android Studio, Git

React Native Developer

2022 - 2022
Fetch.ai
  • Developed an app that uses AI to learn from the user and plans your holidays, arrange dinners, etc.
  • Added push notifications, social sign-ins (Google and Apple), CodePush, and Sentry for crash detection.
  • Created several screens and layouts for the mobile application.
  • Led a team of junior mobile developers, whom I supported in achieving the success of the product. Reviewed pull requests daily.
  • Created Google Maps screens, Places API, Directions API, and Geofencing. Calculated travel distance for each destination.
  • Developed a digital currency wallet screen that displayed the current balance.
  • Added a chat feature using React Native Gifted Chat for the front end and Comet Chat for the engine.
Technologies: React Native, React, Android, iOS, Auth0, Push Notifications, Sentry, CodePush, Firebase, Mobile, Mobile Apps, JavaScript 6, TypeScript, APIs, GitHub, JavaScript, Mobile App Development, Front-end Architecture, User Experience (UX), REST APIs, Redux Thunk, Xcode, Android Studio, Agile Software Development, Git

React Native Developer

2020 - 2020
Fairmarket
  • Developed a home management app in React Native using GraphQL and Apollo Client.
  • Learned about Android instant apps and iOS 14 app clips.
  • Created end-to-end tests using Appium and AWS Device Farm.
Technologies: AWS Device Farm, Appium, GraphQL, iOS, Android, React Native, TypeScript, Sentry, Firebase, JavaScript 6, TypeScript 5, Jest, GitHub, Mobile, Mobile Apps, React Apollo, Apollo, Apollo Client, Gradle, JavaScript, Mobile App Development, Front-end Architecture, User Experience (UX), CI/CD Pipelines, REST APIs, Cucumber, Redux Thunk, Xcode, Android Studio, Git

Mobile Developer

2019 - 2020
Scholly (via Toptal)
  • Refactored the entire mobile app to fit high code quality standards.
  • Updated the existing networking libraries to Retrofit and RxJava.
  • Added new features and fixed bugs to an existing React Native project.
  • Worked with different React workspaces (web and mobile).
  • Performed several A/B testing variants with Firebase.
Technologies: React Native, In-app Purchases, Android, RxJava, Retrofit, Java, TypeScript, Gradle, Firebase, CodePush, GitHub, APIs, JavaScript 6, TypeScript 5, In-app Purchase (IAP), Sentry, Mobile App Development, User Experience (UX), REST APIs, A/B Testing, Redux Thunk, Xcode, Android Studio, Mobile, iOS, Git

React Native Developer

2019 - 2019
Toyboy Warehouse
  • Created an app very similar to Tinder to match people.
  • Developed the popular Tinder's swipe-card animation.
  • Coded the in-app purchases and push notifications.
  • Created several animations using the Animated API.
Technologies: Firebase, JavaScript, React Native, TypeScript, Mobile App Development, Front-end Architecture, User Experience (UX), REST APIs, Redux Thunk, Xcode, Android Studio, Android, Mobile, iOS, Git

React Native and Unity Developer

2019 - 2019
Client (via Toptal)
  • Implemented a bridge from Unity to React Native by using native modules and callbacks.
  • Created a CircleCI YML file to generate the library files automatically.
  • Developed simple modules such as login, register, and friend list.
Technologies: Objective-C, Swift, Android, React Native, Unity, TypeScript, JavaScript, Mobile App Development, Front-end Architecture, User Experience (UX), REST APIs, Xcode, Android Studio, Mobile, iOS, Git

Freelance React Native Developer

2018 - 2018
Medvice
  • Worked on an app that uses AI by answering a couple of questions, the app detects possible threats for the body and calls the ambulance if an urgent threat is determined. If there is no threat, you can chat with a doctor via text or voice using Matrix SDK and Jitsi Framework.
  • Developed wrappers for React Native frameworks and coded them in Java (Android) and Objective-C (iOS) using native modules.
  • Implemented via OpenGL an interactive human body where you can select parts of the body.
  • Used TouchID, Firebase, and Google Sign for user authentication.
  • Raised €80,000 at Rockstart Accelerator.
Technologies: iOS, Android, Project Management, Redux, JavaScript, React Native, Mobile App Development, Front-end Architecture, User Experience (UX), REST APIs, Redux Thunk, Xcode, Android Studio, Mobile, Git

Full-stack Mobile Developer | Technical Director | Co-founder

2013 - 2018
Paisanos Creando
  • Led front-end development for key startup MVPs, accelerating product validation timelines by over 30%.
  • Implemented scalable UI components in React Native, reducing development time for future projects.
  • Collaborated directly with clients and designers to transform wireframes into responsive, production-ready interfaces.
  • Refactored legacy codebases, improving app performance and maintainability across multiple mobile projects.
  • Built and shipped cross-platform apps for early-stage startups, achieving fast launches and investor demos.
  • Contributed to internal tooling improvements, streamlining the team's development and testing workflows.
  • Mentored junior developers and shared React Native best practices, fostering team growth and code quality.
  • Helped define app architecture for modularity and reusability, improving scalability across client projects.
  • Worked in Agile sprints with designers and PMs to deliver features on time while maintaining UI/UX quality.
Technologies: Project Management, JavaScript, CSS, HTML, Unity3D, 3D, Unity, Git, Bitrise, Amazon Web Services (AWS), MySQL, PHP, Spring, Java, React Native, iOS, Android, GitHub, Sentry, CodePush, Firebase, Mobile, Mobile Apps, APIs, Node.js, Mobile App Development, Google Maps API, Video Streaming, User Experience (UX), CI/CD Pipelines, REST APIs, Video Compression, Google Cardboard, FTP, Xcode, Android Studio, AWS Lambda, Amazon S3 (AWS S3), Vuforia, Agile Software Development, SQL Server 2008, PHP 5, Serverless, Scrum, Spring Boot

Mobile Developer

2012 - 2013
Fyrastudio
  • Developed a mobile game using canvas for Android. The game used the accelerometer to detect phone shakes. The canvas was for the progress of the points because it was circular, and at that time, there were no libraries to do that (2012).
  • Learned about phone measuring tools of the phone like GPS, Compass, and Accelerometers used to build a game.
  • Used camera API to scan QR code bars to be able to identify different products within the app.
  • Developed a Bluetooth integration to connect to different devices.
Technologies: BlackBerry, iOS, Android, Java, Mobile App Development, User Experience (UX), REST APIs, Xcode, Android Studio, Mobile, Git

Android Developer

2011 - 2012
Startup
  • Created my first and own mobile product that showed the roadblocks of my city, similar to Waze—ultimately reaching over 50,000 users. Unfortunately, when Waze arrived in Buenos Aires, my project lost almost all its users.
  • Improved my server-side code by using cache techniques to handle over 50,000 users.
  • Created an API in PHP for the mobile application that showed the roadblocks and received roadblock requests from the users.
Technologies: PHP, MySQL, Android, Java, REST APIs, Android Studio, Mobile, Git

Experience

CopilotIQ

https://mycopilotiq.com/
CopilotIQ is a shared code web and mobile app that shows charts and enables patients to talk to their doctors using the Twilio Video SDK.

Get personalized care for type 2 diabetes and hypertension with CopilotIQ’s easy-to-use app. Built with our members in mind, we’re helping them lower glucose levels, reduce medication, manage blood pressure, lose weight, and get healthy—all from the palm of their hand!

Fetch AI

Fetch.ai helps you share or find local experiences and restaurants, connect with locals, and more in a new city. Do what matters to you!

Feeling like an outsider in a new city is never fun. And what's worse is wasting time and money searching for restaurants, experiences, and other wants and needs.

Meet Fetch.ai, an app that gives you personalized recommendations based on what you like and what you don't like. The Fetch.ai mobile app consists of multiple marketplaces, connecting users to other Digital Nomads, accommodation providers, social meetups, local experiences, restaurants, and more.

With Fetch.ai, you can find the best a city has to offer you without ever missing a beat.

Set up your profile in just a few minutes, and the app will automatically start learning your preferences. Effortlessly receive recommendations made especially for you. Save time and money.

Scholly Search

Scholly takes the hassle out of the scholarship search process so you can focus on what’s important—getting free money for school. We have helped students win over $100 million in scholarships so far.

How does Scholly make it easy?
• Customized Scholarship Search: Get matched with scholarships for college and graduate school tailored just to you.
• Scholly Scores: Review and choose the best scholarships to apply for based on their Scholly Score. The higher the Scholly Score, the stronger the match—which means better chances at more money!
• Easy Scholarship Tracking: Keep track of scholarship deadlines and track your application statuses, all in one place.
• Mobile & Desktop Access: Access scholarship opportunities anywhere, on the go, on all of your devices.

The best part is that with a Scholly membership, you’ll receive access to all of the fantastic tools we offer to help students. Among them are Scholly Editor (an AI-powered writing assistant) and Scholly Math (an AI-powered math solver that instantly interprets and provides step-by-step solutions to any math problem).

Scholly Math

Struggling with your math homework or preparing for an upcoming exam? Scholly Math has you covered! Scholly Math is an AI-powered math solver that instantly interprets and solves any type of math problem, from basic arithmetic to complex calculus proofs.

Struggling with your math homework or preparing for an upcoming exam? Scholly Math has you covered! Scholly Math is an AI-powered math solver that instantly interprets and solves any type of math problem, from basic arithmetic to complex calculus proofs.


It’s as simple as this:

1. Snap a photo of a printed or handwritten math problem using your mobile device’s camera.

2. Receive the solution instantly—even without a Scholly membership!—and repeat for as many problems as you need to solve.

3. For detailed, step-by-step solutions, start a FREE* trial, or sign up for a Scholly membership. You’ll receive various, expanded approaches to solving most problems.

Toyboy Warehouse

https://apps.apple.com/us/app/toyboy-warehouse/id1465752398
Toyboy Warehouse is the UK’s largest cougar dating app for older women and younger men. Founded over a decade ago, Toyboy Warehouse has helped tens of thousands of mature women and younger men have found love, lust, and romance. Join and start searching today.


Toyboy Warehouse is not a sugar-momma dating app. Our moderation team has a zero-tolerance policy so offending users will be permanently banned.


Age-gap and cougar dating have exploded in popularity. After so many years of matching gorgeous older women and handsome younger men it’s not difficult to see why Toyboy Warehouse is the UK’s largest age-gap dating app:


• Authentic: Every single member and profile photo is manually approved by our in-house verification team—guaranteeing a dating experience with real UK members.


• Independent: Unlike other dating apps, all our members are only from Toyboy Warehouse. Toyboy Warehouse is a proudly independent dating app.


• Secure: Toyboy Warehouse takes the highest privacy and security precautions so you can date in confidence.


• Fun: Toyboy Warehouse is a thriving community of people looking for love, lust, and romance with mature women and younger men.

We Cover

https://wecover.co/
We Cover is a React Native-based mobile app that secures your goods such as your bicycle, phone, or car. You can add your goods along with their valuation and the app will calculate a daily price for securing the item. You can also turn the security on or off from the app, and it will secure it and charge you the daily security fee until you turn it off. If an unfortunate event happens, you can make a claim through the mobile app.

Fairmarket Home

Fairmarket is a revolutionary platform for homeowners and contractors. However, it is not just a platform - it is a powerful full-range, deeply personalized home improvement, and management app, the first of its kind.

https://play.google.com/store/apps/details?id=com.fairmarkethome
https://apps.apple.com/ar/app/fairmarket-home/id1499657250

Portfolio Sample App

https://sample.agustinvazquez.com
This is a sample app I developed to work with Animations and React Native for the web, and I built a personal app to showcase to interviewers and recruiters.

This is hosted at https://sample.agustinvazquez.com.

Education

2008 - 2014

Bachelor's Degree in Software Engineering

University of Buenos Aires - Buenos Aires, Argentina

2001 - 2007

High School Diploma in IT (Information and Communication Technology)

ORT High School - Buenos Aires, Argentina

Certifications

SEPTEMBER 2019 - PRESENT

Flutter

Udemy

SEPTEMBER 2017 - PRESENT

Project Management Expert

Universidad Tecnologica Nacional

Skills

Libraries/APIs

React, React Navigation, React Native for Web, REST APIs, Apollo Client, Retrofit, RxJava, Node.js, RxJava 2, Retrofit 2, Google Maps, Google Places API, Google Maps API

Tools

Android Studio, Xcode, Redux Thunk, Git, GitHub, Twilio Programmable Video, React Apollo, AWS Device Farm, Gradle, Cucumber, CircleCI, Auth0, Sentry, Expo, Amazon Cognito

Languages

JavaScript, Java, JavaScript 6, TypeScript, TypeScript 5, Objective-C, PHP 5, PHP, HTML, CSS, Swift, GraphQL, Swift 4, SQL, Dart

Frameworks

React Native, Redux, Material UI, Spring Boot, Spring, Unity3D, Unity, Jest, Flutter, Appium

Platforms

iOS, Android, Mobile, Firebase, Amazon Web Services (AWS), Bitrise, MacOS, BlackBerry, Vuforia, AWS Lambda, Visual Studio Code (VS Code)

Paradigms

Agile Software Development, Scrum

Storage

MySQL, Amazon S3 (AWS S3), SQL Server 2008, Memcached

Industry Expertise

Project Management

Other

Mobile Apps, APIs, Software Engineering, Software, GitHub Actions, Mobile App Development, Front-end Architecture, User Experience (UX), Apollo, UI Animation, In-app Purchase (IAP), Monorepos, CI/CD Pipelines, 3D, In-app Purchases, Serverless, Google Cardboard, FTP, Video Compression, Video Streaming, Streaming, Videos, A/B Testing, Push Notifications, CodePush, Google Sign-in, Maps, Google Directions, Geofencing, IT Project Management

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