Mihaela Mihaljevic Jakic

Refactored client backend OpenAPI specifications and built a Swift networking package. Reorganized and clarified existing OpenAPI specifications to better reflect backend capabilities and client requirements, ensuring consistency and accuracy across endpoints and models.

Worked on the Zumiez Stash app as a Senior iOS Engineer, creating Swift network client code generator from OpenAPI specs. Refactored legacy applications and unit-tested critical components.

Modernized and refactored legacy Objective-C codebase to Swift for Wheels Up, improving maintainability and fixing bugs. Simplified login flow to enhance user experience and reduce authentication friction.

Refactored the entire Birthdayrama App, a fun way to share birthday wishes with friends and family. Created a form factory for the app which uses many screens with input fields, applying the latest Auto Layout best practices.

Adapted the existing client application for iOS 8+ for the Consumr App, performing detailed gap analysis for the application, including iOS front-end and REST API backend differences. Implemented custom UI design code and REST API.

Developed 90% of the Kindergarten iOS app for a Croatian company, managing kindergartens. Designed REST APIs and implemented them in the app, along with custom UI design code.

Implemented custom UI in code from design sheets for Tito, an iOS (iPad) book application about the life of Josip Broz Tito. Utilized Objective-C and CocoaPods, along with CoreText for custom page layouts.

Developed a cross-platform chat SDK for iOS and macOS using Swift and SwiftUI for an AI chatbot. Implemented real-time messaging, speech recognition, and UI components with modern architecture patterns.

Developed the QR Code Reader and Scanner App using Objective-C with custom UI in code. Added QR code scanning and creation, along with custom sharing and feedback functionality.

Implemented custom UI design in code for wogibtswas.at, Austria’s biggest what’s on offer portal. Utilized Objective-C, AFNetworking, REST services, and CocoaPods.

Implemented custom UI in code from design sheets for the Blade Soho App, a custom app for one of the leading London hair salons. Utilized Objective-C, AFNetworking, REST services, and CocoaPods.

Developed parts of the Shopsavvy App, an app for shopping and barcode scanning, in Swift, UIKit, and Auto Layout. Worked on features including barcode scanning, QR code scanning and creation, and general bug fixing.

Led the refactoring of a legacy iOS app’s UI and networking stack using modern Swift paradigms for Budtz Innovation. Reorganized the codebase into scalable, feature-driven modules to improve team velocity and onboarding.

Built the Breck World app from scratch in Swift 4+, constructing the UI in code using UIKit and Auto Layout. Implemented the networking layer using URLSession and integrated ARKit.

Added features for the onboarding process and automated localization for the iRobot App. Utilized Objective-C, Swift, SwiftUI, UIKit, and C++ for development.

Developed comprehensive OpenAPI YAML specifications defining REST and Server-Sent Events endpoints for real-time chat functionality. Built mock Swift Vapor server implementation with REST API and SSE streaming capabilities for development and testing workflows.

Added custom features to ServicePal using Objective-C and UIKit. Designed and implemented a template-based dynamic content creation system that allowed for real-time content generation and updates without requiring app redeployment.

Developed 100% of the Universal iOS app (iPhone and iPad) for Christian Resources, a client through oDesk. Created design in Sketch and implemented it in the application, with dynamic UI for various iPhone and iPad models.

Added many features and new screens to the Huxly App, a newsreader reimagined. This included login/sign up/forgot password screens, demographics screens, home and dynamic filter screens, and sharing functionality.

Refactored a large iOS app's UI and networking layer using modern Swift for Birch Finance, implementing MVVM architecture with a clean separation of concerns. Built a comprehensive networking library with complete test coverage.

Developed an iOS app for a social network called Whatt. Implemented a custom expandable TextView with links and tagging functionalities.

Implemented custom UI in code for the Coachlette App, a custom app for personal trainers and coaches. Utilized Objective-C, AFNetworking, REST services, and CocoaPods.

Completed a Master of Science degree focusing on Information and Speech Science. Gained expertise in the theoretical and practical aspects of information processing and speech technology.