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Work Background
RevolutSoftware Engineer (Android)
Mar. 2024Madrid, Community of Madrid, Spain
HappeningTech Lead & Senior Android Developer
Jul. 2022 - Mar. 2024Zagreb, Croatia(I was a part of Superology until April 2023, which then became Happening.) Superbet's Android app consists of 400+ screens, maintained by 10 cross-platform teams. The codebase spans 100+ modules. As a tech lead, I contributed to defining UI, data, and domain architectures, educating the team on these concepts, and guiding their adoption. This effort resulted in:
• 51% fewer critical calculation/mapping invocations.
• 53% faster calculation/mapping times.
• 70% faster rendering for key user journeys. With 600K+ monthly users, the Superbet Android app demands continuous innovation. As lead Android developer in the Sports Statistics squad, I worked closely with PMs, backend/QA engineers, designers, and data analysts, refine feature development and ideation. While the direct impact of the sports statistics features on revenue is complex to quantify, our focus was long-term engagement, reducing churn by delivering meaningful betting statistics. Key contributions included:
• Launching 22 new, highly complex football statistics screens, enhancing player, team, and competition insights.
• Boosting long-term user retention of player details by 63%.
• Increasing NPS scores—83% of users favored the new team details screen over the old one.
• Integrating live sports streaming across 1000+ leagues, drawing 180K+ monthly users.
• Introducing Opta highlights, converting 33% of visitors from the most popular live statistics screen. Additional contributions:
• Conducted the majority of Android technical interviews.
• Authored technical documentation.
• Performed code reviews and mentored developers. Tech Stack: Kotlin, RxJava, Coroutines/Flow, Jetpack Compose, Room, MVP, MVVM, Koin, Protocol Buffers, Retrofit, SSE, Git, JUnit, Roboelectric, Figma, Jira.
HappeningSenior Android Developer
Jan. 2022 - Jul. 2022Zagreb, Croatia
AlgebraAndroid Development Lecturer
Oct. 2021 - Mar. 2024Zagreb, CroatiaTeaching Android development in Java and Kotlin • Working with students in weekly sessions, talking about all the cool things which can be achieved in Android by using Kotlin/Java and Android SDK
HappeningAndroid Developer
Mar. 2021 - Jan. 2022Zagreb, Croatia
UHP Android Developer
Mar. 2020 - Mar. 2021Zagreb, CroatiaWhile at UHP, my primary focus was on IoT, where I was responsible for developing applications and SDKs in the niche. Our team operated within the SCRUM framework, working in sprint-based time boxes. Over the course of one year, we accomplished the following projects: • Spective Connect: This app facilitates machine train connectivity using the MQTT protocol and advanced WiFi management. It empowers operators to communicate with machines, access their internal statistics, and troubleshoot mechanical failures.
• WiFi/MQTT SDK: An internal SDK designed for Android IoT appliances, which found application in several other UHP-developed apps.
• Philips MasterConnect: A smarthome app tailored for industrial purposes, providing a consolidated platform for commissioning and configuring installations for both installers and project owners.
• Philips MasterConnect SDK: An Android SDK built on top of BLE, subsequently utilized by the aforementioned smarthome app. Tech stack: Kotlin, RxJava, LiveData, Kotlin Coroutines, Room, MVVM, Dagger, Koin, Retrofit, Git, JUnit, Roboelectric, Figma, Jira, MQTT, BLE
BornfightJunior Android Developer
Sep. 2018 - Mar. 2020Zagreb, Croatia(In September 2018 the engineering part of Degordian became Bornfight) My experience as a developer in an agency significantly enriched my knowledge and skills. Prior to this, I had been a self-taught developer, primarily working on personal and freelance Android games and apps. However, during my tenure at Degordian/Bornfight, I had the opportunity to collaborate on various projects from inception, benefiting from the mentorship of a senior Android developer. Over the course of nearly two years, we successfully delivered six medium-sized applications: • GLO challenge: Social networking enterprise app designed for internal use by a client.
• I have something for you: A bridge connecting Bornfight with potential clients
• Zagreb Be There: An app offering interactive routes for tourists exploring Zagreb.
• BAT Superhero: Social networking enterprise app developed for internal use, consisting of two apps - one for company employees and the other for managers.
• Determ: Mobile implementation of the Determ online media monitoring solution.
• Ajmo!: Platform providing an overview of all party events in Croatia. Tech stack: Kotlin, Java, RxJava, LiveData, DBFlow, Room, MVP, MVVM, MVI, Dagger, Retrofit, Git, Zeplin, Jira
DegordianJunior Android Developer
Jul. 2018 - Sep. 2018Zagreb, CroatiaMy experience as a developer in an agency significantly enriched my knowledge and skills. Prior to this, I had been a self-taught developer, primarily working on personal and freelance Android games and apps. However, during my tenure at Degordian/Bornfight, I had the opportunity to collaborate on various projects from inception, benefiting from the mentorship of a senior Android developer. Over the course of nearly two years, we successfully delivered six medium-sized applications: • GLO challenge: Social networking enterprise app designed for internal use by a client.
• I have something for you: A bridge connecting Bornfight with potential clients
• Zagreb Be There: An app offering interactive routes for tourists exploring Zagreb.
• BAT Superhero: Social networking enterprise app developed for internal use, consisting of two apps - one for company employees and the other for managers.
• Determ: Mobile implementation of the Determ online media monitoring solution.
• Ajmo!: Platform providing an overview of all party events in Croatia. Tech stack: Kotlin, Java, RxJava, LiveData, DBFlow, Room, MVP, MVVM, MVI, Dagger, Retrofit, Git, Zeplin, Jira
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