I am a Senior Android Developer with 7+ years of experience delivering mobile apps for international clients. I specialize in cross-platform mobile solutions using Kotlin Multiplatform and have worked on Android since the early alpha days. I enjoy building scalable architectures and shipping high-quality software for diverse domains. My focus areas include mobile software architecture, Kotlin Multiplatform for Android + iOS app business layers, Jetpack Compose UI, and SDK development. I routinely work with Kotlin & Java, Bluetooth Low Energy, and native C++ via JNI to create robust native integrations for health, fitness, location-based marketing, and other verticals.

Josip Lasić

I am a Senior Android Developer with 7+ years of experience delivering mobile apps for international clients. I specialize in cross-platform mobile solutions using Kotlin Multiplatform and have worked on Android since the early alpha days. I enjoy building scalable architectures and shipping high-quality software for diverse domains. My focus areas include mobile software architecture, Kotlin Multiplatform for Android + iOS app business layers, Jetpack Compose UI, and SDK development. I routinely work with Kotlin & Java, Bluetooth Low Energy, and native C++ via JNI to create robust native integrations for health, fitness, location-based marketing, and other verticals.

Available to hire

I am a Senior Android Developer with 7+ years of experience delivering mobile apps for international clients. I specialize in cross-platform mobile solutions using Kotlin Multiplatform and have worked on Android since the early alpha days. I enjoy building scalable architectures and shipping high-quality software for diverse domains.

My focus areas include mobile software architecture, Kotlin Multiplatform for Android + iOS app business layers, Jetpack Compose UI, and SDK development. I routinely work with Kotlin & Java, Bluetooth Low Energy, and native C++ via JNI to create robust native integrations for health, fitness, location-based marketing, and other verticals.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate

Language

Croatian
Fluent
English
Fluent

Work Experience

Android Developer Contractor at stappone
April 1, 2025 - October 28, 2025
Developed Android SDK for medical sensor-sensing systems. Exposed a C++ native library on Android using JNI. Collaborated with cross-functional teams in Vienna to deliver SDK features and integrations.
Senior Android Developer at Freelance
November 1, 2019 - October 28, 2025
Led mobile software architecture and Kotlin Multiplatform for Android + iOS app business layer. Implemented UI with Jetpack Compose, worked with Kotlin & Java, and developed/maintained SDKs. Experience with Bluetooth Low Energy and native C++ via JNI. Contributed to multiple published apps including PubQuiz 2.0, FiZone, ScanEat, and beaconsmind.
Senior Android Developer at Native Independent Contractor
August 1, 2022 - October 28, 2025
Providing Android consultancy services; company specializes in developing native mobile solutions. Focus on cross-platform architecture, SDKs, and mobile integrations.
Senior Android Developer at beaconsmind
July 1, 2023 - July 1, 2023
Location-based marketing SDK & whitelabel apps. Public BLE SDK development and maintenance; Whitelabel product development. Worked on BLE beacons integrations and SDK features; demonstrated with sample apps.
Android Developer at ScanEat
October 1, 2021 - October 1, 2021
Health & food tracking app. Implemented integration of Kotlin Multiplatform for complex business layer. Contributed to architecture and feature development.
Android Developer at dobartek.hr
July 1, 2019 - July 1, 2019
Online food ordering and delivery service. Delivered Android features and maintained app quality.
Junior Android Developer at Jealousy Ltd
June 1, 2018 - June 1, 2018
Social media platform development; contributed to Android app features and maintenance.
Senior Android Developer at Native IT (Freiberuflich)
November 1, 2019 - October 28, 2025
Freelance senior Android developer providing mobile software architecture expertise, Kotlin Multiplatform for Android + iOS app business layer, Jetpack Compose UI, Kotlin & Java, SDK development, documentation & maintenance, Bluetooth Low Energy, and C++ native via JNI.
Senior Android Developer at beaconsmind
July 31, 2023 - July 31, 2023
Location-based marketing SDK & whitelabel apps; Bluetooth Low Energy; Public SDK development and maintenance; Whitelabel product development.
Android Developer at ScanEat
October 31, 2021 - October 31, 2021
Health & food tracking app; Integration of Kotlin Multiplatform (KMP) for complex business layer implementation.
Android Developer at dobartek.hr
July 31, 2019 - July 31, 2019
Online food ordering and delivery service.
Junior Android Developer at Jealousy Ltd
June 30, 2018 - June 30, 2018
Social media platform in Croatia.
Web Application Engineer at Extension Engine
August 31, 2018 - August 31, 2018
Summer Camp Web Application Engineer.
Independent Contractor - Android Consultant at Native IT
August 1, 2022 - October 28, 2025
Android consultancy services; Company specialized in developing native mobile solutions.

Education

Master's degree at Technische Universität Wien
January 1, 2020 - January 1, 2020
Master's degree, Computer Software Engineering at University of Zagreb, Faculty of Electrical Engineering and Computing
January 1, 2018 - January 1, 2020
Bachelor's degree, Computer Science at University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
January 1, 2015 - January 1, 2018
Summer Camp Web Application Engineer at Extension Engine
January 1, 2018 - January 1, 2018
Master's degree at Technische Universität Wien
January 1, 2020 - December 31, 2020
Master's degree at University of Zagreb, Faculty of Electrical Engineering and Computing
January 1, 2018 - December 31, 2020
Bachelor's degree at University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
January 1, 2015 - December 31, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Healthcare, Professional Services, Education, Media & Entertainment