Manuel Vayo, Developer in Buenos Aires, Argentina
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Manuel Vayo

Verified Expert  in Engineering

iOS Developer

Buenos Aires, Argentina

Toptal member since July 27, 2021

Bio

Manuel is a mobile developer with several years of experience creating gorgeous user interfaces (UI) and user experiences (UX) for native and custom-designed iOS apps. He’s delivered mobile solutions for enterprises like Rappi (a Colombian super tech company specializing in online delivery services) and Mercado Libre (an Argentinian online marketplace company) as well as startups. Working in large teams and solo, Manuel's delivered many apps in various industries, but all solved a business need.

Portfolio

Trellis Health Systems Inc
iOS, Swift, UIKit, Charts, Objective-C
Genium
Swift, iOS, SwiftUI, Xcode, GitHub, GPS, Mobile Apps
Rappi
Swift, Jira, iOS, Bitrise, GPS, Mobile Apps

Experience

  • Xcode - 9 years
  • iOS - 9 years
  • Mobile App Development - 9 years
  • Swift - 6 years
  • User Experience (UX) - 6 years
  • User Interface (UI) - 6 years
  • SwiftUI - 2 years
  • Objective-C - 2 years

Availability

Part-time

Preferred Environment

iOS, Swift, Objective-C, Mobile App Development, iOS SDK, Xcode, User Interface (UI), User Experience (UX), Jira, GitHub

The most amazing...

...project I've worked in is Clear, an app that has provided a health and vaccination pass, allowing users to access venues and events more securely.

Work Experience

Swift Developer

2024 - 2025
Trellis Health Systems Inc
  • Developed an app that helps women seamlessly carry their pregnancy medical records.
  • Implemented new features, fixed bugs, improved UI, and migrated UIKit to SwiftUI.
  • Worked as the sole iOS developer on a small team. Took key decisions in the new architecture of the project.
Technologies: iOS, Swift, UIKit, Charts, Objective-C

iOS Engineer

2020 - 2023
Genium
  • Developed an app to help provide secure health information regarding lab tests and vaccination cards during COVID-19.
  • Coded features from scratch and helped in the discovery of new bugs and how to solve them.
  • Helped in the migration of the app from Swift to SwiftUI.
  • Worked seamlessly within a team of almost 20 developers.
Technologies: Swift, iOS, SwiftUI, Xcode, GitHub, GPS, Mobile Apps

iOS Developer

2019 - 2020
Rappi
  • Participated in the development of new entertainment features for different regions of South America.
  • Worked side by side with a remote team of almost fifteen developers.
  • Used Bitrise for continuos integration and distribution for testing.
Technologies: Swift, Jira, iOS, Bitrise, GPS, Mobile Apps

iOS Developer

2019 - 2019
Mercado Libre
  • Developed new functionalities: requesting and sending payments on a virtual wallet app.
  • Tracked and fixed bugs, issues, and requirements via Jira.
  • Worked with a team of over 12 developers on new functionalities.
Technologies: Swift, iOS, Mobile Apps

iOS Developer

2017 - 2019
T-MOB
  • Developed a comic-based app with an intuitive comic reader.
  • Tracked bugs via Firebase and dealt with issues on Jira.
  • Worked on a small team and was involved in decision making.
Technologies: Swift, Jira, Bitbucket, iOS, Mobile Apps

iOS Developer

2014 - 2016
Tictapps
  • Developed multiple innovative, efficient, and scalable mobile solutions.
  • Dealt continuously with issues, scheduling, and requirements tracking via Jira and Scrum Agile methodology.
  • Built custom and native user interfaces using the latest iOS programming techniques while integrating external and internal web services and interfaces.
Technologies: Objective-C, Swift, iOS, Crashlytics, Mobile Apps

Experience

Aeropuertos Argentina 2000

An app mainly built in Objective-C with some added functionalities in Swift.

Through the Aeropuertos Argentina 2000 app, you can obtain information in real-time of all flights and services offered at the 33 airports that AA2000 manages.

Chivas Oficial

A Swift-based app, Chivas Oficial allows all the Chivas fans to follow the newest information about their favorite team. Follow the matches minute per minute, interact in the stadium among other users, get news from the team, and enable push notifications to be up to date.

Rootinks

Rootinks is the only entertainment service that will allow you to know the works of the most prestigious comics authors, independent authors, and the great artistic potential in the comics industry. This service is exclusively developed by lovers of the comics genre and passionate about the internet.

Mercado Pago

https://apps.apple.com/ar/app/mercado-pago/id925436649
Load your money and cards in the app and make and request all your payments from your cell phone!

Buy and pay what you want without touching bills, depending on your type of account:
• Pay your bills and services: telephone bills, electricity, water, gas, cable, and more.
• Recharge balance on your cell phone.
• Send money to your friends or whoever you want without paying costs.
• Buy in your favorite stores, pay faster by scanning QR codes, and access discounts in pharmacies, supermarkets, fuel, and much more.

Rappi

https://apps.apple.com/us/app/rappi-entrega-comida-y-super/id984044296
Discover an app created for you, available 24/7 for whatever you need.

When we say that we want to make your life easier, we mean it. That's why you can send anything from anywhere in the world with your super app, to more than nine countries, everything you want to your family and friends. So if you need to go to the supermarket, a restaurant, or the pharmacy: We’ll do it for you.

Storyline

Storyline is the easiest way to create and share group videos of your favorite moments together.

We capture special moments in our lives every day. But often, these memories get lost deep within chat conversations or the camera roll of our smartphones. With Storyline, you can collaboratively create and share memories together with ease.

1. Create and add friends to your story.
2. Build your storyline together.
3. Share your story with the world.

Storyline, a place where moments become stories.

Laberints

Laberints is the only application that allows you to access the maps of gated communities in Argentina so you can be guided by GPS to your desired location.

It is very easy to use! You must first select the neighborhood and then enter the lot number or the place you want to go to e.g., clubhouse. This way, the application will use your GPS location to tell you how to get there!

Swiss Medical Mobile

https://apps.apple.com/us/app/swiss-medical-mobile/id1176173606
Download the app and access all the information you need from your cell phone.

With Swiss Medical Mobile you can:
• Check our professionals.
• Request appointments in your own centers.
• See the details of your medical plan.
• Access the results of your laboratory studies and images.
• Download your invoices.
• Manage your authorizations and reimbursement budgets.
• Reserve your place for care in the guards of our Swiss Medical Center.
• Generate provisional credentials.
• Qualify or ignore the attention received.
• See the vaccines applied in our vaccinations.
• Access the recipes generated from e-consultation.
• Know the nearest branches.
• Call our emergency line.

Acercar-se

https://apps.apple.com/ar/app/acercar-se/id1477916867
Acercar-se is the digital platform that we make available to our clients so that people can access different resources and connect with the community of coaching professionals, as well as coordinate a meeting with any of the community members.

Education

2012 - 2019

Bachelor's Degree in Computer Engineering

Universidad del Salvador - Buenos Aires, Argentina

Skills

Tools

Xcode, Jira, GitHub, Crashlytics, Bitbucket, Adobe Photoshop, Sketch, TestFlight

Languages

Swift, Objective-C, Java

Frameworks

SwiftUI, iOS SDK, UIKit

Platforms

iOS, Bitrise, Firebase

Paradigms

Agile Software Development, Object-oriented Programming (OOP)

Other

Mobile App Development, User Interface (UI), User Experience (UX), Push Notifications, Mobile Apps, GPS, Charts

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