Barrett is available for hire
Hire BarrettBarrett Breshears
Verified Expert in Engineering
Xcode Developer
Logan, UT, United States
Toptal member since November 7, 2014
Bio
Barrett is a full-stack software developer with more than nine years of experience. He has focused on iOS mobile development over the past few years. Barrett's hard work and communication skills allow him to work in teams and with projects of all sizes.
Portfolio
Bridger Aerospace
Swift, Kotlin, Go, SwiftUI, Objective-C, Architecture, Data Pipelines...
Builder Trend
Swift, SwiftUI, Objective-C, React Native, Maintainability, Performance...
YOU'RE WRONG
React Native, Expo, Node.js, Deno, AI Chatbots, AI Integration, Mobile Apps...
Experience
- Xcode - 15 years
- iOS - 15 years
- Objective-C - 14 years
- Swift - 10 years
- React Native - 5 years
- SwiftUI - 5 years
- Sencha Touch - 4 years
- Flutter - 1 year
Work Experience
Senior Staff Engineer
2025 - 2026
Bridger Aerospace
- Architected and delivered real-time aircraft video streaming capabilities, enabling incident-response teams to view live aerial footage and make faster, better-informed decisions during active operations.
- Led the development and deployment of a redesigned mobile application, modernizing the user experience while maintaining operational continuity for mission-critical workflows.
- Established scalable mobile architecture and engineering standards that accelerated feature delivery, reduced technical debt, and improved maintainability across the application.
- Mentored engineers and provided technical leadership through architecture reviews, code reviews, implementation planning, and cross-functional delivery.
Technologies: Swift, Kotlin, Go, SwiftUI, Objective-C, Architecture, Data Pipelines, Large Language Models (LLMs), Machine Learning, Multi-agent Orchestration, Performance, PyTorch, Python, Reliability, Scalability, Startups, Leadership, AVPlayer, HTTP Live Streaming (HLS), REST, XCTest, AirPlay, StoreKit
Senior Staff Engineer
2024 - 2025
Builder Trend
- Architected scalable mobile and back-end systems that supported users while improving application reliability to 99.5% availability.
- Established engineering standards for testing, observability, accessibility, security, and code quality.
- Partnered with product, design, and business stakeholders to translate complex construction-management requirements into technical roadmaps serving builders, contractors, and homeowners.
Technologies: Swift, SwiftUI, Objective-C, React Native, Maintainability, Performance, PyTorch, Reliability, Scalability, Leadership, REST, XCTest, AirPlay, StoreKit
Senior Mobile and Full-stack Developer
2024 - 2025
YOU'RE WRONG
- Identified a unique niche for an app that uses AI-powered personas to provide entertaining and insightful judgments.
- Developed a minimum viable product (MVP) to test the core functionality of the app, focusing on a single judgment system ("Am I Wrong?").
- Designed and integrated AI judge personas with various personalities and judgment styles, creating a dynamic user experience.
- Built a scalable back end to handle user accounts, case submissions, and history tracking.
- Created an intuitive and visually appealing interface that makes submitting cases, interacting with judges, and reading judgments straightforward.
Technologies: React Native, Expo, Node.js, Deno, AI Chatbots, AI Integration, Mobile Apps, Artificial Intelligence (AI), Chatbots, Performance, Python, Reliability, Leadership, REST, XCTest, AirPlay, StoreKit
iOS Senior Staff Engineer
2023 - 2025
Albertsons
- Architected and delivered a scalable pharmacy management feature.
- Designed and implemented a secure, HIPAA-compliant prescription management system that allows users to refill prescriptions, set reminders, and track medication histories.
- Integrated Apple HealthKit and 3rd-party wellness APIs to collect and analyze user health metrics like activity levels and sleep patterns.
- Created detailed technical documentation for the pharmacy and health and wellness modules, including API integration guides, architecture diagrams, and feature specifications.
- Acted as a liaison between the mobile development team, back-end engineers, QA testers, and product managers to ensure timely and accurate delivery of features.
- Managed a team of six iOS engineers to deliver the pharmacy and health and wellness modules on time and within scope.
Technologies: Swift, SwiftUI, Xcode, Charles Proxy, Git, Mobile Apps, Performance, PyTorch, Python, Reliability, Scalability, HTTP Live Streaming (HLS), REST, XCTest
Senior Mobile Developer
2023 - 2023
Cached
- Gathered—drawing on my mobile development experience—requirements and created a focused backlog, leading to a streamlined project plan. My knowledge allowed me to accurately estimate the project length, ensuring a clear/efficient path to completion.
- Employed my leadership skills to seamlessly align mobile and back-end development, ensuring robust app functionality. Through effective communication and strategic oversight, I fostered a cohesive workflow, resulting in a high-performing, user-friendly app.
- Applied best practices to create a bug-free, easily maintainable, and upgradable app. Emphasizing clean code, thorough testing, and modular design, I ensured its long-term reliability and adaptability.
Technologies: iOS, Android, Firebase, SwiftUI, Model View ViewModel (MVVM), Mobile Apps, Reliability, Startups, REST, XCTest
Senior iOS Developer
2022 - 2023
McGraw-Hill Education (Sharpen)
- Took designs and UI specs and turned them into pixel-perfect UI for native iOS app views.
- Helped plan and manage the team to hit product milestones and launches.
- Handled bugs and QA issues by implementing TDD to help make the app stable and usable.
Technologies: iOS, Swift, QA Testing, SwiftUI, Mobile Apps, REST, XCTest, tvOS
Mobile and Full-stack Developer
2019 - 2023
Eth.co
- Helped plan, develop, and launch a Flutter app for the Play Store and App Store.
- Built and maintained a website using Preact and Tailwind.
- Integrated the sign-in with crypto wallets, allowing users to log in to the website.
- Found and fixed bugs and created a QA program to maintain the site.
Technologies: Flutter, React, Elixir, Startups, XCTest, tvOS
Lead Flutter Developer
2020 - 2021
Fedi for pleroma
- Prototyped and developed a cross-platform app for a client that would allow them to use the ActivityPub protocol through a mobile app.
- Managed several remote developers who built bug-free features in a timely manner.
- Maintained and updated codebase by adding new features as well as fixing bugs.
Technologies: Flutter, APIs, Social Networking, Startups, XCTest
Senior iOS Developer
2020 - 2021
Reel You
- Gathered project requirements from the lightning start.
- Put together a list of features that would be most important to launch MVP based on the client's requirements.
- Compiled backlog and provided the client with overall project estimation.
- Implemented plan and delivered the MVP on time and under budget.
Technologies: Swift, Firebase, Apple Push Notifications, Startups
Lead iOS Developer and Architect
2018 - 2021
MetaCardio
- Interviewed the client and was able to determine the project requirements.
- Determined which platform to target for the MVP based on the market fit.
- Created MVP requirements and determined project estimates and time.
- Constructed an iOS application from scratch, creating project architecture and development processes.
- Led the software development team and handled project management to finish the app within the given timeline.
Technologies: Fastlane, Firebase, Xcode, Swift, Startups
Lead Mobile Developer
2019 - 2020
GigSmart
- Analyzed the existing codebase to estimate how long the project will take to get to the App Store.
- Resolved significant architectural issues that were causing major code instability.
- Fixed major core location issues that were causing battery performance issues.
- Integrated into an existing enterprise software team to help meet the deadline.
- Joined existing teams' daily standup meetings, performed just like an existing resource, and was up to speed writing code on the first day of the project.
Technologies: CircleCI, Xcode, Swift, React Native, Android, Startups
Senior Mobile Engineer
2018 - 2018
Cooper Strategic
- Met daily with the team and clients to figure out requirements for a new project.
- Analyzed and understood key business requirements and turned those requirements into software features.
- Developed a plan for a minimum viable product based on feedback from clients and business requirements.
- Took the MVP and created a detailed app structure and flow for users to help create a road map of features and functionality.
- Took the MVP and roadmap, estimated the total cost of the project, and helped deliver user stories, project plans, and total project length and resources.
Technologies: Android, iOS, React Native
Senior iOS Engineer
2018 - 2018
Token Drop
- Created the base architecture for an app so we can easily expand features while maintaining code quality.
- Set up a build machine to automate builds and uploads to iTunes Connect.
- Wrote excellent code that is easily understandable and implemented analytics and push notifications.
- Created awesome animations to improve user interactions.
Technologies: CircleCI, Xcode, Swift
Senior iOS Engineer
2016 - 2018
Accent Technology
- Created an admin app that allowed updates to the end user's app for a custom experience depending on the client's needs.
- Used best practices to create a project that is easily maintainable and scalable.
- Integrated with the existing team to create high-quality apps.
- Migrated projects to support the latest version of Swift.
- Updated apps to support iOS 10.
- Integrated Salesforce into their existing iOS app to pull and then create visualizations.
- Utilized Salesforce mobile SDK to authenticate users.
- Used Salesforce Object Query Language to pull custom data set down for users to analyze sales process and performance.
Technologies: Salesforce, Xcode, Swift
Senior iOS Engineer
2015 - 2017
Zugata (via Toptal)
- Took the existing codebase and brought quality and standards up to an enterprise level.
- Worked with the existing team to integrate the API.
- Created new features that increased the user base.
- Created build automation tools that streamlined the deployment process.
- Created automated testing that reduced bugs.
Technologies: Cocoa Touch, Swift, Startups
Senior iOS Engineer
2016 - 2016
Emirates Group (via Toptal)
- Supported the existing iOS team in building out difficult features for the new Emirates app.
- Utilized SVGKit to create an interactive map that allows for offline location lookup.
- Created a custom scroll view that displays membership rewards with custom animation.
- Successfully integrated into a team eleven hours ahead of my current time zone.
- Worked with NSNotificationCenter to sync local core data with a server.
Technologies: Core Data, Xcode, Swift
Senior iOS Developer
2016 - 2016
GLOBL (via Toptal)
- Updated the project to Swift 2.2.
- Fixed existing project crashes that were causing low app store ratings.
- Updated the app to iOS 9.3 and Swift 2.2.
- Utilized Twitter to find periscope URL and grab the stream URL. Once we had the periscope data, we were able to display live streams.
- Fixed performance issues.
Technologies: iOS, Swift, X (formerly Twitter) API
Senior iOS Engineer
2015 - 2015
Poq Studio (via Toptal)
- Led a team in building a Swift-based iOS application.
- Built an API framework that communicates with the back-end server.
- Worked with an international team distributed in different time zones, maintaining excellent communication.
- Used unit tests and test-driven development to maintain bug-free code.
- Maintained high code standards with code review.
Technologies: Cocoa Touch, Swift
Senior iOS Engineer
2014 - 2015
Roomi (via Toptal)
- Rebuilt an existing app by creating a scalable foundation that allows for the app to be easily updatable.
- Integrated S3 image uploads for room listings.
- Created a live-time chat client.
- Led a team of developers and created best practices for development.
- Deployed a custom analytics solution to monitor user activity.
Technologies: Firebase, Parse, Objective-C
iOS Developer
2014 - 2014
Rocksauce Studios
- Developed mobile applications specializing in native and HTML5 app development.
- Troubleshot existing projects to fix major functionality and crash issues.
- Implemented crash and analytic SDKs, allowing app owners to see live app issues and usage.
- Utilized social frameworks to create apps that allowed users to share with their friends and grow the app's user base.
- Created apps using Parse, allowing for rapid app development.
Technologies: CSS3, HTML5, Parse, Cocoa Touch, Auto Layout, Size Classes, Storyboarding, Xcode, Swift, Objective-C
Lead Front-end Developer
2012 - 2014
Seven Tablets
- Created Android and iOS apps using native code as well as HTML5, CSS3, and PhoneGap to deliver cross-platform apps depending on business requirements and budgets.
- Led a team of front-end developers.
- Created custom REST APIs using Ruby on Rails to communicate with iOS and Android apps.
- Helped deploy back-end systems on both Amazon EC2 and Heroku.
- Deployed a continuous integration process utilizing Git that allowed our team to rapidly develop applications.
- Helped create a code review process that improved code quality and app stability.
Technologies: PhoneGap, Ruby on Rails (RoR), jQuery, Sencha Touch, Compass, Sass, CSS3, HTML5, Cocoa Touch, Xcode, Objective-C
Lead Web Developer
2011 - 2012
VRP
- Created and maintained eCommerce websites for VRP.
- Built custom Magento plugins to allow for a single-page checkout process, converting 20% better than the usual four-page Magento checkout.
- Ran server support for Rackspace instances.
- Optimized sites for mobile experience.
- Successfully integrated a .NET ERP system to communicate with the PHP/Magento-based website, where orders had previously been entered manually.
Technologies: ASP.NET, Magento, PHP, .NET
Lead Mobile and Web Developer
2010 - 2011
Web Dev Designs
- Created the Motel 6 iPhone app.
- Built custom websites for companies using Umbraco and .NET.
- Programmed a custom back-end to communicate with Sabre's Travel API.
Technologies: C#, Umbraco, .NET, Xcode, Objective-C, iOS
Project History
Video Courses
Reviewed and contributed to creating video courses focused on teaching intermediate and advanced iOS development concepts. Responsibilities include evaluating course content, providing detailed edits, and developing high-quality tutorial materials to enhance the learning experience.
Accent Mobile 2.0
https://itunes.apple.com/us/app/accent-mobile-2.0/id1159941447?mt=8Selling doesn’t have to stop just because you’re on the road. Give sales reps more time to sell with Accent’s mobile app. Your reps can have instant access to all the tools and resources they need to effectively plan, prepare and engage with buyers from anywhere.
Zugata
Zugata empowers you to reach your potential by collecting continuous feedback from the people you work with. Zugata automatically identifies who you work with and collects anonymous feedback to help you understand your strengths and improvement areas and specific ways to improve.
Motel 6 iPhone App
The iOS app for Motel 6. Serving as the sole app developer, I consulted with Motel 6's in-house designers and back-end engineers to create a great user experience.
PRD Companion
An app that allows you to access media through your iPad or iPhone alongside the ROS media box to stream videos and music or to view files connected to the media box via USB or cloud. I served as lead developer.
Technical Training
Received a certificate in web development from Weatherford College in Texas.
Roomi
Need a roommate? Roomi makes it easy to find and connect with compatible roommates. Whether you’re renting out an extra room or searching for a place to stay, Roomi is the first mobile app to take the guesswork out of finding the right roommate.
Poq Studio's House of Fraser App
Created an iOS app for poq studios that allowed retail stores to sell their products though an app.
TV Boss iOS and Android App
HTML 5 hybrid app built using Cordova.
Sonar for Periscope
Search for periscope streams based on your local and search terms. Easily browse scopes by swiping through scopes.
YOU'RE WRONG
AI-powered judgments and advice tailored to your unique scenarios. Resolve disputes, uncover relationship insights, and find out if you're wrong with our fun judge personas!
Ever wondered, "Am I wrong?" or needed relationship advice but didn’t know where to turn? Your AI Judge is here to help! Our app uses cutting-edge AI technology to evaluate your scenarios and provide tailored guidance in an entertaining and insightful way.
KEY FEATURES
• Share your side of the story, and let our AI judge decide whether you're wrong, with detailed explanations for its decisions.
• Navigate the complexities of relationships with AI-generated guidance that’s practical and easy to understand.
• Explore a variety of anonymous user-submitted cases and verdicts. Learn from real-life dilemmas, laugh at the quirky situations, and discover how others handled their challenges.
• Interact with various AI judge characters, each bringing their unique style and perspective to the verdict.
• Designed for seamless and enjoyable interaction, offering entertainment and real-world guidance.
Ever wondered, "Am I wrong?" or needed relationship advice but didn’t know where to turn? Your AI Judge is here to help! Our app uses cutting-edge AI technology to evaluate your scenarios and provide tailored guidance in an entertaining and insightful way.
KEY FEATURES
• Share your side of the story, and let our AI judge decide whether you're wrong, with detailed explanations for its decisions.
• Navigate the complexities of relationships with AI-generated guidance that’s practical and easy to understand.
• Explore a variety of anonymous user-submitted cases and verdicts. Learn from real-life dilemmas, laugh at the quirky situations, and discover how others handled their challenges.
• Interact with various AI judge characters, each bringing their unique style and perspective to the verdict.
• Designed for seamless and enjoyable interaction, offering entertainment and real-world guidance.
Skills
Libraries/APIs
Facebook iOS SDK, Parse SDK, CocoaPods, REST APIs, PyTorch, X (formerly Twitter) SDK, Foursquare API, MagicalRecord, Vue, React, Preact, jQuery, X (formerly Twitter) API, Salesforce API, PhoneGap NFC, Node.js
Tools
Xcode, Sublime Text 2, Apache, AVPlayer, Bitbucket, Jira, GitHub, Basecamp, Adobe Photoshop, Google Analytics, Crashlytics, Chrome Developer Tools, Auto Layout, CircleCI, Fastlane, Microsoft Visual Studio, Apple Push Notifications, Charles Proxy, Git, Expo
Languages
Objective-C, SQL, JavaScript, HTML5, Swift, Dart, Python, PHP, CSS3, Sass, SQL-99, Kotlin, C#, Ruby, Elixir, Go
Frameworks
Core Location, Cocoa, JSON Framework for Objective-C, AFNetworking, Sencha Touch, Flutter, SwiftUI, XCTest, StoreKit, CodeIgniter, Ruby on Rails (RoR), Compass, Nuxt.js, Cocoa Touch, PhoneGap, .NET, Core Data, ASP.NET, React Native
Paradigms
Mobile Development, Agile, Maintainability, REST, Agile Software Development, Continuous Integration (CI), Pair Programming, Test-driven Development (TDD), Scrum, Model View ViewModel (MVVM)
Platforms
WordPress, iOS, tvOS, Raspberry Pi, Parse, Magento, Firebase, Salesforce, Heroku, Amazon EC2, Umbraco, Linux, Android, Ubuntu
Storage
JSON, MySQLi, MongoDB, Data Pipelines, PostgreSQL
Industry Expertise
Social Networking
Other
AVFoundation, Outsourcing, Cordova, App Store, AI Chatbots, AI Integration, Mobile Apps, Artificial Intelligence (AI), Chatbots, Architecture, Large Language Models (LLMs), Machine Learning, Performance, Reliability, Scalability, Startups, Leadership, HTTP Live Streaming (HLS), AirPlay, Multi-agent Orchestration, Storyboarding, Size Classes, APIs, QA Testing, Deno, Supabase, Supabase Auth
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring