Available to hire
I am a results-driven iOS engineer with over 9 years in IT and 9 years specializing in iOS app development. I have hands-on experience with Swift (including Swift 5.x), SwiftUI, and Objective-C, building accessible and high-performance apps for enterprises and consumer experiences.
I thrive in collaborative, Agile environments, partnering with stakeholders, leading design decisions, and implementing robust testing with XCTest and XCUITest. I am comfortable with CI/CD practices, code reviews, and modern architecture patterns (MVVM, Coordinator) to deliver reliable software and delightful user experiences.
Skills
Language
English
Fluent
Spanish; Castilian
Beginner
Work Experience
Sr. iOS Engineer at Walmart Global Tech
August 1, 2022 - PresentCollaborated with business stakeholders to understand requirements and define project objectives; developed iOS mobile app using SwiftUI and Swift 5.x with ADA accessibility; optimized performance with Xcode Instruments; led design decisions for wireframes and responsive layouts; participated in sprint planning, reviews, and retros; conducted code reviews, resolved bugs, and ensured code quality and maintainability; worked with RESTful APIs, JSON/XML, Apollo GraphQL, and backend integration.
Lead Software Engineer (iOS) at City National Bank (A RCB Company)
August 1, 2022 - September 8, 2025Implemented iOS apps with Swift 5.x, SwiftUI and RxSwift; migrated dependencies from CocoaPods to Swift Packages; managed end-to-end App Store Connect submission, provisioning profiles, certificates, and TestFlight; added UI Tests using Cucumberish and unit tests with XCTest; performance profiling with Instruments; coordinated with SCRUM team to deliver features.
Sr. Software Engineer (iOS) at UBS Financial Services
January 1, 2022 - September 8, 2025Collaborated with stakeholders to analyze workflows and translate requirements into scalable mobile solutions; designed robust iOS apps using Swift 5.x and RxSwift; performed in-depth performance analysis with Xcode Instruments; contributed to UI/UX discussions and layout decisions; led deployment processes, App Store distribution, and TestFlight; implemented memory optimizations; acted as Scrum Master in absence of lead.
Mobile Application Developer at United Airlines
February 1, 2019 - September 8, 2025Worked on Post booking flow, reservations and Seat map modules; used Instruments to minimize memory leaks and ensure stability; participated in SCRUM ceremonies; contributed to layout decisions and UI consistency across devices.
iOS Developer at NRG/Centrica/Direct Energy
June 1, 2018 - September 8, 2025Developed a new app in Swift 4.x from scratch, replacing Swift 2.3; improved performance and reduced login time; published two apps via App Store Connect; added Spanish language support; integrated Alamofire, SwiftyJSON and CardIO; used Fortify for security scans; managed TestFlight builds and memory leak reduction; implemented UI with Auto Layout and Size Classes.
Mobile Application Developer at Wells Fargo
September 1, 2017 - September 8, 2025Built hybrid apps using Apache Cordova; debugged memory leaks with Instruments; migrated Core Data to SQLite; designed database models using SQLite; integrated Backbone JS, jQuery Mobile and RESTful APIs; collaborated with Agile teams to deliver features.
Sr. iOS Engineer at Walmart Global Tech
August 1, 2022 - PresentCollaborated with business stakeholders to understand requirements, analyzed existing processes, and defined project objectives aligned with strategic goals. Developed iOS mobile apps using SwiftUI and Swift 5.x with ADA-compliant features. Optimized app performance with Xcode Instruments to identify memory leaks and ensure stability. Led design and layout decisions, wireframing, and adapting layouts to meet user needs while following accessibility and design best practices. Participated in SCRUM ceremonies, contributed to code reviews, and collaborated with cross-functional teams to deliver sprint goals. Implemented robust testing strategies, including UI and unit tests, and supported CI/CD workflows.
Lead Software Engineer (iOS) at City National Bank (A RCB Company)
August 1, 2022 - September 8, 2025Implemented iOS and iPad apps using Swift 5.x, SwiftUI, and RxSwift. Migrated third-party dependencies from CocoaPods to Swift Packages. Managed end-to-end app submission through App Store Connect, provisioning, and code signing. Coordinated TestFlight beta testing and resolved issues with Apple Review. Added UI Tests with Cucumberish and unit tests with XCTest. Worked with Instruments to minimize memory leaks and ensure stability. Collaborated with SCRUM team to deliver value each sprint and created SwiftUI preview wrappers for UIKit classes to aid development.
Sr. Software Engineer (iOS) at UBS Financial Services
January 1, 2022 - September 8, 2025Collaborated with stakeholders to analyze workflows, designed and developed robust iOS and iPadOS applications using Swift 5.x and RxSwift. Performed in-depth performance analysis with Xcode Instruments to improve app performance and stability. Led UI/UX discussions, implemented adaptive layouts, and ensured secure, compliant financial functionality. Served as technical liaison with project managers and business leads, participated in sprint reviews, and led end-to-end iOS app deployment via App Store Connect, including TestFlight and production releases.
Mobile Application Developer at United Airlines
February 1, 2019 - September 8, 2025Worked on Post booking flow, reservations, and Seat map modules in the customer-facing app. Used Instruments to identify memory leaks and ensure stability. Participated in sprint reviews and collaborated with SCRUM teams to deliver features. Involved in unit test design using XCTest.
iOS Developer at NRG/Centrica/Direct Energy
June 1, 2018 - September 8, 2025Developed a new app in Swift 4.x from scratch, improved performance, and reduced login time. Managed App Store submissions for multiple apps (Bounce Energy included). Added Spanish language support. Integrated libraries such as Alamofire, SwiftyJSON, and CardIO; used Fortify for security scans; released TestFlight QA builds and prod builds, reducing memory leaks through instrumentation.
Mobile Application Developer at Wells Fargo
September 1, 2017 - September 8, 2025Built hybrid mobile apps for iOS using Apache Cordova, Backbone.js, and jQuery Mobile. Replaced Core Data with SQLite and designed the database/data model. Used Instruments to minimize memory leaks and ensure stability; collaborated with stakeholders and testers to deliver value in two-week sprints.
Sr. iOS Engineer at Walmart Global Tech
August 1, 2022 - PresentCollaborated with business stakeholders to translate requirements into actionable product objectives and implemented iOS features using SwiftUI and Swift 5.x. Ensured ADA-compliant UI and optimized performance with Xcode Instruments. Led design decisions, participated in SCRUM ceremonies, and contributed to code reviews and UI/layout improvements across iPhone models.
Lead Software Engineer (iOS) at City National Bank (A RCB Company)
August 1, 2022 - September 8, 2025Designed and developed iOS and iPadOS apps using Swift 5.x, SwiftUI, and RxSwift. Migrated dependencies from Cocoapods to Swift Packages. Managed App Store Connect submissions, provisioning, and TestFlight distribution; added UI Tests with Cucumberish and unit tests with XCTest. Coordinated with SCRUM team for value delivery.
Sr. Software Engineer (iOS) at UBS Financial Services
January 1, 2022 - September 8, 2025Collaborated with stakeholders to analyze workflows and translate requirements into scalable mobile solutions. Built robust iOS apps with Swift 5.x and RxSwift; performed performance profiling and memory optimization. Led deployment, provisioning, code signing, and CI/CD integration; contributed to test strategy with XCTest and UI tests.
Mobile Application Developer at United Airlines
February 1, 2019 - September 8, 2025Contributed to Post booking flow, reservation management, and Seat map modules. Used Instruments to minimize memory leaks and collaborated with SCRUM team to deliver features across iOS versions 11/12; performed layout modifications as needed.
iOS Developer at NRG/Centrica/Direct Energy
June 1, 2018 - September 8, 2025Developed a new app in Swift 4.x, replacing a Swift 2.3 app; improved login time by 50%. Managed App Store submissions for multiple apps; added Spanish language support. Integrated Alamofire, SwiftyJSON, CardIO; used New Relic and Crashlytics for monitoring. Released TestFlight QA builds and prod builds; reduced memory leaks with Instruments.
Mobile Application Developer at Wells Fargo
September 1, 2017 - September 8, 2025Built hybrid iOS apps using Cordova, Backbone.js, and jQuery Mobile. Performed memory leak analysis with Instruments and migrated from Core Data to SQLite; designed the database model. Delivered production-ready features and resolved issues.
Sr. iOS Engineer at Walmart Global Tech
August 1, 2022 - PresentCollaborated with business stakeholders to understand requirements and define project objectives, ensuring alignment with strategic goals. Developed iOS mobile app using SwiftUI and Swift 5.x with ADA compliance (VoiceOver and accessible formatting). Optimized performance with Xcode Instruments, identifying memory leaks and stabilizing the app. Led design decisions on layout and UI, created wireframes and layout adjustments to meet requirements. Participated in two-week sprints, conducted code reviews, and collaborated with cross-functional SCRUM team. Resolved defects in testing to ensure stability and reliability. Implemented responsive UI using Auto Layout and Size Classes across iPhone models.
Lead Software Engineer (iOS) at City National Bank (A RCB Company)
August 1, 2022 - October 10, 2025Implemented iOS Mobile and iPad Apps using Swift 5.x, SwiftUI and RxSwift. Migrated dependencies from Cocoapods to Swift Packages. Migrated the project from XCode 13.x to XCode 14.x. Managed end-to-end app submission through App Store Connect, provisioning profiles, and code signing. Coordinated TestFlight beta testing and resolved issues with Apple Review. Added UI Tests using Cucumberish and unit tests with XCTest. Used Instruments to minimize memory leaks and ensure reliability. Engaged in requirement gathering and layout decisions; collaborated with SCRUM team to deliver sprint value; added SwiftUI preview wrappers for UIKit classes.
Sr. iOS Engineer at UBS Financial Services
January 1, 2022 - October 10, 2025Collaborated with stakeholders to analyze workflows and translate requirements into scalable mobile solutions. Designed and developed robust iOS apps using Swift 5.x and RxSwift; conducted performance analysis with Xcode Instruments to reduce memory leaks and CPU bottlenecks; contributed to UI/UX discussions and adaptive layouts; acted as primary technical liaison for banking features ensuring security and compliance; led deployment processes to App Store Connect and TestFlight, and performed code reviews to maintain quality.
Mobile Application Developer at United Airlines
February 1, 2019 - October 10, 2025Involved in Post booking flow, reservations, and seat map modules for the customer-facing app. Used Instruments to minimize memory leaks and improve stability. Participated in sprint reviews and collaborated with SCRUM team to deliver value. Contributed to unit test design using XCTest.
Mobile Application Developer at NRG/Centrica/Direct Energy
June 1, 2018 - October 10, 2025Developed a new app in Swift 4.x from scratch, replacing the existing Swift 2.3 app, improving performance and reducing login time by 50%. Published two apps via App Store Connect, including Bounce Energy. Added Spanish language support option. Improved app performance with fast enumeration; resolved production issues; integrated Alamofire, SwiftyJSON, and CardIO; monitored via New Relic and Crashlytics; released TestFlight QA builds and prod builds with memory leaks reduced to 0%.
Mobile Application Developer at Wells Fargo
September 1, 2017 - October 10, 2025Built hybrid mobile apps using Apache Cordova, Backbone JS, and jQuery Mobile. Replaced Core Data with SQLite, designed the database model, and ensured stability with Instruments. Involved in requirement gathering, layout modifications, and bug fixes during testing; adhered to Agile processes and JIRA for project tracking.
Education
Master’s in Business Administration at Louisville, KY
January 11, 2030 - January 1, 2020Master’s in Computer Science at San Jose, CA
January 11, 2030 - January 1, 2016Bachelor of Technology in Mechanical at AP, India
January 11, 2030 - January 1, 2014Master’s in Business Administration at Louisville, KY
January 11, 2030 - January 1, 2020Master’s in Computer Science at San Jose, CA
January 11, 2030 - January 1, 2016Bachelor of Technology in Mechanical at AP, India
January 11, 2030 - January 1, 2014Qualifications
Master’s in Business Administration
January 11, 2030 - January 1, 2020Master’s in Computer Science
January 11, 2030 - January 1, 2016Bachelor of Technology in Mechanical
January 11, 2030 - January 1, 2014Master of Business Administration
January 11, 2030 - January 1, 2020Master of Computer Science
January 11, 2030 - January 1, 2016Bachelor of Technology in Mechanical
January 11, 2030 - January 1, 2014Industry Experience
Software & Internet, Financial Services, Retail, Transportation & Logistics, Energy & Utilities, Professional Services, Travel & Hospitality
Skills
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