J.

I'M JULIAN

A Senior Mobile Engineer with a strong focus on building scalable, user-centric, and maintainable applications.

Thanks for passing by! Here you will find a bit about me, my work and some blog posts I do from time to time.

About me

Julian Astrada

Since I started my career in 2013, I had the opportunity to work with a wide range of clients and teams that diversified technologies, methodologies, and development patterns in my portfolio. I worked both inside big companies and seeking clients on my own, rewriting code, or building applications from scratch.

Nowadays I work as a freelancer or contractor. I get clients on Upwork where I achieved a 100% client satisfaction rate or by referrals from previous happy clients.

I consider myself proactive, creative, and a fast learning person. I have the ambition to grow professionally, applying the engineering knowledge gotten from the university. I am interested in mobile development, the use of the latest technologies, and the support for different devices.

My Skills

SwiftUI Combine SDK Development Bluetooth Async Work Unit & UI Tests React Native TypeScript

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Person holding a Pebblebee Clip Bluetooth tracker alongside a phone displaying the Pebblebee app

Pebblebee

Led iOS development for Pebblebee's Bluetooth tracker app, driving the App Store rating from 2.4 to 4.6 through team leadership and a full technical modernization.

iPhone displaying the Symplicity Jobs For You screen with job listings, alongside a coffee cup and pencils

Symplicity

Developed a globally used career services iOS app with a 4.8 rating, featuring a scaffold system that adapts UI and features per university client.

Flo by Moen smart water monitor displayed on a phone screen with water usage data and controls

Flo by Moen

Senior iOS Engineer on a smart water monitoring app, enabling remote device control, real-time consumption data, and leak alerts via MQTT.

What clients say

"I had the privilege to work with Julian. He is a pro developer, with great skills and fast execution. Julian is a team player, adjusts quickly and more important a great guy!"

Danny Tuttnauer

Danny Tuttnauer

Co-Founder

Source

"We worked with Julian to develop a B2B iPhone and Apple Watch application. We were looking for a developer but also someone to guide us. Julian did both perfectly. He is a great developer and provided us great suggestions."

Kevin Pfefer

Kevin Pfefer

Product Manager

Source

"Worked with Julián, who was a contractor on an iPhone & Apple Watch app. Not only is he a great software engineer, but he is also a dependable and communicative contractor. He provides consistent updates and demos throughout the project to show progress."

Lesley Mbogo

Lesley Mbogo

X-Amazon Head of Product

Source

Posts

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Posts

SwiftUI and UIKit migration illustration

Migrating UIKit into SwiftUI

A practical guide to migrating UIKit-based iOS projects to SwiftUI, covering benefits, step-by-step migration process, and best practices.

Siri integration on iOS illustration

Integrating Siri on your iOS app

A step-by-step guide to integrating Siri into your iOS app using NSUserActivity, intent donations, and Siri Shortcuts.

Swift Package Manager iOS SDK illustration

Launching your iOS SDK with SPM

A practical guide to building, distributing, and maintaining an iOS SDK using Swift Package Manager.

Get in Touch

Got an idea? A problem? A compliment? Slide into my inbox — let’s make something timeless together.