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I'm Harun Lugušić, a Senior iOS/Software Engineer based in Sarajevo, Bosnia and Herzegovina. I design and build large-scale native iOS applications, especially IoT healthcare apps that integrate hardware, Bluetooth, Wi‑Fi, and cloud services. I pride myself on clean architecture, modular UI, and crisp visual design—delivering features with engaging animations while maintaining strong testability and performance. I've led app redesigns, wrote comprehensive internal documentation, and mentored teammates to maintain high code quality. I'm currently contributing to Mayo Clinic's native iPad patient modeling and healthcare simulation project on a part-time basis, collaborating with clinicians to define dynamic visualizations and simulation logic across nearly 100 physiological data points. I also work on core simulation rules, a ventilation control feature, and a reusable UI component library; all backed by extensive unit tests. My experience spans full mobile stacks, QA automation, and cross-functional collaboration to improve end-user healthcare experiences.…I'm Harun Lugušić, a Senior iOS/Software Engineer based in Sarajevo, Bosnia and Herzegovina. I design and build large-scale native iOS applications, especially IoT healthcare apps that integrate hardware, Bluetooth, Wi‑Fi, and cloud services. I pride myself on clean architecture, modular UI, and crisp visual design—delivering features with engaging animations while maintaining strong testability and performance. I've led app redesigns, wrote comprehensive internal documentation, and mentored teammates to maintain high code quality. I'm currently contributing to Mayo Clinic's native iPad patient modeling and healthcare simulation project on a part-time basis, collaborating with clinicians to define dynamic visualizations and simulation logic across nearly 100 physiological data points. I also work on core simulation rules, a ventilation control feature, and a reusable UI component library; all backed by extensive unit tests. My experience spans full mobile stacks, QA automation, and cross-functional collaboration to improve end-user healthcare experiences.

Harun Lugusic

App Developer, Web Developer, Front-End Developer, +4

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I'm Harun Lugušić, a Senior iOS/Software Engineer based in Sarajevo, Bosnia and Herzegovina. I design and build large-scale native iOS applications, especially IoT healthcare apps that integrate hardware, Bluetooth, Wi‑Fi, and cloud services. I pride myself on clean architecture, modular UI, and crisp visual design—delivering features with engaging animations while maintaining strong testability and performance. I've led app redesigns, wrote comprehensive internal documentation, and mentored teammates to maintain high code quality. I'm currently contributing to Mayo Clinic's native iPad patient modeling and healthcare simulation project on a part-time basis, collaborating with clinicians to define dynamic visualizations and simulation logic across nearly 100 physiological data points. I also work on core simulation rules, a ventilation control feature, and a reusable UI component library; all backed by extensive unit tests. My experience spans full mobile stacks, QA automation, and cross-functional collaboration to improve end-user healthcare experiences.…I'm Harun Lugušić, a Senior iOS/Software Engineer based in Sarajevo, Bosnia and Herzegovina. I design and build large-scale native iOS applications, especially IoT healthcare apps that integrate hardware, Bluetooth, Wi‑Fi, and cloud services. I pride myself on clean architecture, modular UI, and crisp visual design—delivering features with engaging animations while maintaining strong testability and performance. I've led app redesigns, wrote comprehensive internal documentation, and mentored teammates to maintain high code quality. I'm currently contributing to Mayo Clinic's native iPad patient modeling and healthcare simulation project on a part-time basis, collaborating with clinicians to define dynamic visualizations and simulation logic across nearly 100 physiological data points. I also work on core simulation rules, a ventilation control feature, and a reusable UI component library; all backed by extensive unit tests. My experience spans full mobile stacks, QA automation, and cross-functional collaboration to improve end-user healthcare experiences.

Available to hire

I’m Harun Lugušić, a Senior iOS/Software Engineer based in Sarajevo, Bosnia and Herzegovina. I design and build large-scale native iOS applications, especially IoT healthcare apps that integrate hardware, Bluetooth, Wi‑Fi, and cloud services. I pride myself on clean architecture, modular UI, and crisp visual design—delivering features with engaging animations while maintaining strong testability and performance. I’ve led app redesigns, wrote comprehensive internal documentation, and mentored teammates to maintain high code quality.

I’m currently contributing to Mayo Clinic’s native iPad patient modeling and healthcare simulation project on a part-time basis, collaborating with clinicians to define dynamic visualizations and simulation logic across nearly 100 physiological data points. I also work on core simulation rules, a ventilation control feature, and a reusable UI component library; all backed by extensive unit tests. My experience spans full mobile stacks, QA automation, and cross-functional collaboration to improve end-user healthcare experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Bosnian

Fluent

English

Fluent

German

Beginner

Work Experience

Senior iOS Developer at Klika

November 1, 2021 - Present

Cooperating on the development of a complex, 200-screen native iOS IoT healthcare application, integrating hardware, Bluetooth, Wi-Fi and cloud services. Leading implementation of multiple features with complex UI, including clean design and animations. Refactoring for testability, performance, scalability and maintainability. Prioritizing unit tests and SOLID-compliant, modular code. Designing modular UI and black-box components for reuse. Creating internal docs for modules and feature specs. Supporting real-time and asynchronous data flow with firmware commands and backend. Monitoring app performance with Firebase Analytics and crash reports; Mixpanel for 1M+ active users. Preparing release candidate builds and coordinating testing. Mentoring team members and conducting code reviews. Collaborating with POs, TPOs, BAs to improve in-app experience and plan future features.

Senior iOS Developer (part-time) at Mayo Clinic

April 1, 2023 - Present

Developing a native iPad application for patient modeling and healthcare simulation in collaboration with MDs and clinical experts. Implementing features for dynamic data visualization, interactive timelines and simulation of medical scenarios. Building a lightweight iOS version containing key health parameters. Contributing core simulation logic by adding medical rules and markers across nearly 100 physiological data points. Implementing UI redesign using Compositional Layout and creating reusable components. Implementing ventilation control feature responsive to ICU data; health model builder; internal bug reporting feature for users. Ensuring test coverage with unit tests across codebase.

QA Manual and Automation Engineer at Klika

November 30, 2021 - October 10, 2025

Executed manual and automated testing across iOS, Android and Web for a technically demanding product with hardware, firmware, BLE and Wi‑Fi integration. Verified firmware features and embedded system behavior with mobile and web apps. Built and maintained a test automation product using Xamarin with C# and Appium with Kotlin, integrated into Jenkins CI/CD pipelines. Mentored new team members and collaborated with BAs and developers in an agile environment.

QA Engineer at System Verification

November 30, 2019 - October 10, 2025

Defined and conducted test scenarios across functional, integration and regression testing. Created and maintained test cases and regression suites. Reported, tracked bugs and validated bug fixes on an invoicing CRM solution. Contributed to the development of test standards, methodologies and QA processes, advancing higher testing efficiency and consistency. Onboarded and mentored new team members on system and application architecture.

Senior iOS Developer at Klika

November 1, 2021 - Present

Cooperating on the development of a 200-screen native iOS IoT healthcare application, integrating hardware, Bluetooth, Wi-Fi and cloud services. Leading the implementation of complex UI with clean design and engaging animations. Driving app redesign and extensive codebase refactoring to improve testability, performance, scalability and maintainability. Prioritizing unit test coverage and writing modular, SOLID-compliant code. Designing modular UI and black-box components for reuse across features. Supporting real-time and asynchronous data flow between embedded devices and backend. Monitoring performance with Firebase Analytics and Mixpanel for over 1 million active users. Preparing release candidate builds and mentoring team members through code reviews.

Senior iOS Developer (part-time) at Mayo Clinic

April 1, 2023 - Present

Contributing to a native iPad application for patient modeling and healthcare simulation, collaborating with MDs and clinicians. Delivering features for dynamic data visualization, interactive timelines and simulation of medical scenarios. Building a lightweight iOS version containing key health parameters. Implementing core simulation logic and medical markers across nearly 100 physiological data points. Implementing a ventilation control feature that responds to ICU data and developing a reusable UI with a Compositional Layout. Covering the majority of codebase with unit tests.

QA Manual and Automation Engineer at Klika

November 1, 2021 - October 10, 2025

Executed manual and automated testing across iOS, Android and Web for a hardware/firmware product with Bluetooth and Wi‑Fi. Verified firmware features and embedded system behaviors, ensuring tight integration with mobile and web applications. Built and maintained test automation product using Xamarin with C# and Appium with Kotlin, integrated into Jenkins CI/CD pipelines. Mentored new team members and collaborated with business analysts and developers in an agile environment.

QA Engineer at System Verification

November 1, 2019 - October 10, 2025

Defined and conducted test scenarios across functional, integration and regression testing for an invoicing CRM solution. Created and maintained test cases and regression test suites. Reported, tracked bugs and validated bug fixes. Contributed to the development of test standards, methodologies and QA processes, and onboarded new team members on system and application architecture.

Senior iOS Developer at Klika

December 1, 2021 - Present

Cooperating on the development of a complex, 200-screen native iOS IoT healthcare application, integrating hardware, Bluetooth, Wi-Fi and cloud services. Leading the implementation of multiple features containing complex UI, including clean and crisp design and visually engaging interface by using animations. Contributing to an in-depth app redesign and extensive codebase refactoring to improve testability, performance, scalability and maintainability. Prioritizing unit test coverage while writing modular, SOLID-compliant code that’s easy to maintain and scale. Designing modular UI and logical black-box components for use across multiple features. Creating internal tech documentation for app modules, including feature specifications, code architecture and troubleshooting notes. Supporting real-time and asynchronous data flow, ensuring seamless Bluetooth and cloud communication between mobile app, embedded system via firmware commands and backend. Monitoring user behavior and app perf

Senior iOS Developer (part-time) at Mayo Clinic

April 1, 2023 - Present

Contributing to the development of a native iPad application focused on patient modeling and healthcare simulation, in close collaboration with certified MDs and clinical experts. Delivering features that support dynamic data visualization, interactive timeline progression and simulation of interactive medical scenarios. Building a lightweight app version for iOS devices, containing key health parameters and vital functions. Contributing to the core simulation logic by implementing new medical rules and markers, ensuring consistent behavior across a highly interconnected system of nearly 100 physiological data points. Implementing app improvements, including the development of a ventilation control feature that dynamically responds to ICU patient data, patient health model builder feature, internal bug reporting feature for users. Implementing complete UI redesign using Compositional Layout principle while creating reusable UI components. Covering the majority of codebase with unit tes

QA Manual and Automation Engineer at Klika

November 30, 2021 - October 10, 2025

Executed comprehensive manual and automated testing across iOS, Android and Web platforms for a technically demanding product integrating hardware, firmware, Bluetooth, and Wi-Fi communication. Verified firmware features and embedded system behaviors, ensuring tight integration with mobile and web applications. Built and maintained test automation product using Xamarin with C# and Appium with Kotlin, integrated into Jenkins CI/CD pipelines for continuous validation. Mentored new team members, sharing insights on product architecture, tools, and testing workflows. Collaborated with business analysts and developers regarding requirements analysis, design reviews, testing and documentation for applications developed in agile, Scrum environment.

QA Engineer at System Verification

November 30, 2019 - October 10, 2025

Defined and conducted test scenarios throughout all testing stages, including functional, integration and regression testing. Created and maintained test cases and regression test suites. Reported, tracked bugs and validated bug fixes on an invoicing CRM solution. Contributed to the development of test standards, methodologies and QA processes, advancing higher testing efficiency and consistency. Onboarded and mentored new team members on system and application architecture.