Leandro Diaz

Visionary Senior iOS Developer with over 5 years of experience specializing in crafting cutting-edge mobile

applications. Proficient in Swift, UIKit, and SwiftUI, adept at integrating advanced technologies to elevate user

engagement and streamline backend communications. Committed to driving innovation and consistency in fast-

paced, collaborative environments, utilizing both waterfall and agile methodologies effectively.

Sr. iOS Developer

TQL Logistics

Nov 2023 - Present (1 year 3 months)

Modernize iOS apps by transitioning from UIKit to SwiftUI, enhancing functionality and performance.

Mentor junior developers and stay updated on iOS technologies to meet evolving industry standards.

Implement new features in Swift, improving app performance and user experience.

Develop comprehensive unit tests using XCTest, ensuring code reliability and robustness.

Streamline asynchronous programming with modern APIs like async/await, PromiseKit, and Combine.

Troubleshooting YML configurations in Azure Pipelines and Bitbucket, optimizing CI/CD workflows in

partnership with DevOps teams to reduce build failures and deployment downtime.

Driving innovation in logistics services through strategic app development, staying ahead of iOS

technology trends to meet evolving business needs and industry standards.

Sr. iOS Developer

AmFam Insurance, Apex Systems

Feb 2023 - Oct 2023 (9 months)

Designed and implemented advanced iOS apps to enhance customer experience in insurance services.

Integrated new features and ensured app stability using Swift, achieving measurable improvements.

Collaborated with cross-functional teams to align app development with business goals.

Mentored junior developers in best iOS practices, fostering a supportive learning environment.

Led feature integration, resulting in significant enhancements to user experience.

Drove app stability and user experience improvements. Implemented intuitive interfaces using Swift,

resulting in measurable customer satisfaction gains.

Sr. iOS Developer

Universal Studios Orlando, Apex Systems

Feb 2022 - Feb 2023 (1 year 1 month)

Integrated Touch ID and NFC in Magic Band Watch, streamlining park access and enhancing guest

experiences.

Secured sensitive biometric data with advanced encryption, maintaining high standards of data privacy.

Modernized app by translating Objective-C code to SwiftUI, improving performance and development

efficiency.

Leandro Diaz - page 1Developed user-friendly iOS app for Magic Band Watch, ensuring seamless integration with park

systems.

Collaborated with hardware teams for optimal Touch ID and NFC functionality, ensuring smooth

software integration.

Pioneered biometric integration in Magic Band Watch, revolutionizing park access and enhancing guest

experience through Touch ID and NFC technology

Implemented advanced encryption methods to secure guest data, particularly biometric information,

upholding Universal Studios' commitment to privacy

Modernized app architecture by translating legacy Objective-C to UIKit and SwiftUI, improving

performance and streamlining development processes

iOS Developer

Staples Connect (Staples.Inc)

Feb 2020 - Feb 2022 (2 years 1 month)

Led development of Native Shipping and Loyalty Program features using SwiftUI, enhancing user

experience.

Optimized app performance with Xcode Instruments, improving stability and efficiency.

Translated Figma designs into dynamic SwiftUI views, boosting user engagement.

Configured CI/CD pipelines, reducing deployment downtime and build failures.

Collaborated with DevOps to refine YML scripts, enhancing automation and reliability.

Conducted performance tuning with Xcode Instruments, optimizing app functionality and efficiency while

transitioning to a decoupled MVVM architecture.

Transformed static views into dynamic animations by translating Figma mock-ups and integrating SVG

files, significantly enhancing user interaction.

iOS Developer

Cognizant for CapitalOne Bank

Jan 2020 - Jan 2021 (1 year 1 month)

Developed and maintained iOS applications for CapitalOne, enhancing user experience and app

performance.

Collaborated with cross-functional teams to design and implement new features, improving app

functionality.

Resolved critical bugs and performance issues, ensuring seamless app operation and user satisfaction.

Utilized Swift and Objective-C to build scalable code, contributing to the overall efficiency of the

development process.

C# / .Net Developer

Trizetto Providers Solution, Cognizant

Jan 2020 - Jan 2021 (1 year 1 month)

Developed and maintained C#/.Net applications, enhancing system performance and user experience.

Collaborated with cross-functional teams to deliver projects on time, improving team efficiency.

Implemented debugging and testing processes, reducing system errors and downtime.

Analyzed user requirements and provided technical solutions, increasing client satisfaction.

BrainStation Bootcamp

Leandro Diaz - page 2IOS Development

2017 - 2018

Cybrary

Linux +, Network +

2016 - 2017