Cristi Habliuc, Developer in Barcelona, Spain
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Cristi Habliuc

Verified Expert  in Engineering

Software Engineer and Developer

Barcelona, Spain
Toptal Member Since
July 30, 2019

Cristi is a passionate software engineer who enjoys building high-performing mobile and web apps. He has extensive experience refactoring code, knowledge of the marketing process, a solid understanding of the design process, and writes effective explanatory articles to help end-users get the most out of products.


APIs, Artificial Intelligence (AI), Swift, Objective-C, iOS, TypeScript...
Machine Learning, Artificial Intelligence (AI), Swift, Firebase...
Design, Swift, iOS, APIs, CSS, HTML, JavaScript




Preferred Environment

Figma, Sketch, CocoaPods, Swift, GitHub, Xcode

The most amazing...

...project I've worked on is Onyx: a home trainer app that uses AI to predict exercise reps and track the user's workouts as a trainer would.

Work Experience

Senior Mobile Engineer 2

2022 - 2024
  • Joined the mobile core performance team at Picsart and focused on the iOS platform. Played a crucial role in driving significant enhancements in our app's stability, performance, and security metrics.
  • Led the transition from traditional auth key authorization to OAuth2, enhancing the app's security.
  • Implemented strategies to reduce app startup times, such as dynamic loading of frameworks, which contributed to a smoother user experience.
  • Enhanced our CI/CD processes by refining the functionality of our GitHub status checks.
Technologies: APIs, Artificial Intelligence (AI), Swift, Objective-C, iOS, TypeScript, JavaScript

Lead iOS Engineer

2019 - 2022
  • Built the Onyx Workout Tracking iOS app; wrote over 70% of the code since joining in 2019 until the exit, and CureFit acquired us in 2020.
  • Refactored code for best practices as well as handling deployment and tests.
  • Deployed the app, ran hiring interviews, and managed a small team.
  • Improved, as a team, the product and oversaw the advancements (currently ongoing).
Technologies: Machine Learning, Artificial Intelligence (AI), Swift, Firebase, Google Cloud Storage, iOS, Core Data, APIs, Auto Layout, iPhone, iPad, Go

Lead Developer

2018 - 2019
  • Developed several iOS apps that were submitted to the App Store.
  • Built APIs to support those apps; also coded websites and small web apps for the products.
  • Oversaw marketing and supported the design process for those apps and websites.
Technologies: Design, Swift, iOS, APIs, CSS, HTML, JavaScript

Lead iOS Developer on Anymote

2015 - 2018
  • Built the AnyMote smart remote app from scratch; also worked on a hardware prototype that ultimately led to the AnyMote Home device to be manufactured after our successful Kickstarter campaign.
  • Wrote the code and assembled an Arduino powered prototype that we ultimately progressed into the AnyMote Home BLE IR blaster.
  • Supported remote control functionality for most devices.
  • Wrote explanatory articles explaining functionality.
  • Aided with the promotion of the product via social channels.
Technologies: Smart Devices, Networking, Bluetooth LE, Objective-C, Swift, APIs, iPhone, iPad, Kickstarter, Hardware, Arduino

Lead iOS Developer

2012 - 2015
  • Co-founded the company and was one of the four people that originally worked on the project.
  • Built the Boxes v1 app from scratch, it was a big learning opportunity for me.
  • Handled visual assets from Photoshop to project, then used Sketch to do the same when we moved on to it.
Technologies: Objective-C, APIs, iPhone, iOS, Sketch, Photoshop 7

With over a billion downloads to date, Picsart offers editing tools and one-of-a-kind effects that inspire creativity in everyone. The Picsart photo and video editor is an all-in-one image enhancer, video editor, photo collage app, meme maker app, and sticker maker app.


A platform for collectors and fans. This is an iOS app (and now a web app) that is a social network for collectors that also features a marketplace where you can sell. buy or trade collectibles. See it in action here,

Onyx: Home Workout

This app acts like a virtual trainer. It automatically tracks your exercises and gives you accurate statistics on how you performed. We are now part of the Cure Fit family after being purchased in 2020 and we're constantly adding more and more features to this beloved product.

AnyMote: Smart Remote

This iOS app lets you use your phone to control the smart devices in your home. We have built this app to connect to smart devices and we even designed and manufactured a multidirectional IR blaster that the app would connect through BLE for not-so-smart devices, including TVs, air conditioners, and more.


Swift, Objective-C, Bash, Go, CSS, HTML, JavaScript, TypeScript


iOS SDK, JSON Web Tokens (JWT), Core Data, SwiftUI




Xcode, Auto Layout, GitHub, Figma, Sketch, Photoshop 7


iOS, MacOS, Firebase, Linux, Bluetooth LE, Arduino


APIs, iPhone, iPad, Design, Artificial Intelligence (AI), Machine Learning, Networking, Smart Devices, Kickstarter, Hardware, Smart TV, CI/CD Pipelines


Design Patterns


MongoDB, Google Cloud Storage, Google Cloud

2001 - 2004

Bachelor's Degree in Computer Science

Alexandru Ioan Cuza University - Iasi, Romania

Collaboration That Works

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