Carlos Bessa

iOS Developer with 10+ years of professional software development experience, including 7+ years building native iOS applications with fully native UI — using Swift/SwiftUI/UIKit as well as Xamarin Native — and MVVM architecture. Currently building the TUI travel app, shipping features end-to-end from architecture through CI/CD, automated testing, and observability (Datadog, Crashlytics, Firebase, Braze). Comfortable working in Agile/Scrum teams and owning features from design through release.

iOS Developer at TUI (2022-09 – Present)

• Maintain and enhance the TUI travel app in Swift, SwiftUI, and UIKit as part of the core iOS engineering team.
• Apply MVVM architecture, Core Data, unit and snapshot testing (XCTest) to maintain code quality and reduce regressions.
• Monitor app health and performance with Datadog and Crashlytics, and drive user engagement and analytics through Firebase, Braze, and Tealium.
• Support accessibility (VoiceOver, Dynamic Type) and run A/B tests / feature flags to validate new functionality.
• Manage builds and releases via Fastlane, TestFlight, Applivery, and Bitrise, and localize the app using AppLanga.
• Collaborate in a Scrum team, participating in sprint planning, reviews, and code collaboration via Git.

Mobile Developer (iOS & Android) at Sensormatic (2018-11 – 2022-12)

Built native iOS and Android UI using Xamarin Native for an enterprise retail inventory platform, splitting time roughly evenly across both platforms.

• Integrated multiple third-party RFID reader SDKs to enable real-time, item-level inventory scanning across different hardware vendors.
• Owned feature architecture, unit testing (XUnit), and CI pipeline contributions (Jenkins) across the codebase.
• Collaborated cross-functionally using Jira, Confluence, and Bitbucket in an Agile team environment.

Mobile Developer at Eleven Systems (2018-01 – 2018-06)

Built a mobile application for transportation companies, covering login, scheduling, and real-time location features.

• Implemented contactless card validation and NFC-based device communication for real-world transit hardware.

Mobile Developer at Eleven Systems (2017-10 – 2018-01)

Built an enterprise ticket-validation application with QR code scanning and structured data serialization.

iOS Developer at Eleven Systems (2016-08 – 2017-10)

Built a native iOS networking app in Swift, allowing airline passengers to connect with fellow travelers before business meetings.

• Implemented shared-flight detection logic using AlamoFire for networking, so users could check whether a new contact would be on their flight.

Software Developer at Eleven Systems (2016-03 – 2016-05)

Developed a Windows application to facilitate the exchange of tax identification data for invoicing, including QR/barcode scanning and local data storage.

Bachelor of Software Engineering in Software Engineering – Instituto Politécnico do Cávado e do Ave (2018)