Feb 2023 – Dec 2024 · 1 yr 10 mos · Remote

• JioCinema was a leading Indian OTT service that delivered content to an audience of 1.4 billion. Since 2023, JioCinema has held exclusive streaming rights to the Indian Premier League (IPL), the most popular cricket league. Initially, I was tasked with enhancing the stability of the Android TV application. Subsequently, I was responsible for developing an in-house Advertising SDK, replacing a third-party solution. We developed a cross-platform SDK (Kotlin Multiplatform), compatible with JavaScript, iOS, and Android. This SDK was fully implemented and efficiently managed display and live in-stream advertising, reaching tens of millions of viewers during each match and across various content offerings.

Feb 2021 – Dec 2022 · 1 yr 10 mos · Brno, South Moravia, Czechia

• The company deeply focuses on mobile security. My responsibility was to develop 3 projects from scratch. Check the section 'Projects' for more details about individual projects.

Feb 2019 – Jan 2021 · 1 yr 11 mos · Brno, South Moravia, Czechia

• A startup project which has not been published yet and the work is protected by NDAs.

Jan 2018 – Present · 8 yrs 3 mos · Brno

• THE STORY BEHIND THE APP
• It all started when a visually impaired friend asked if it was possible to build an app that could quickly recognize Czech Crown banknotes. My co-founder (who handles iOS) and I took on the challenge. After months of prototyping and development, Cash Reader was born.
• THE APP & GLOBAL IMPACT
• Today, Cash Reader is a globally recognized accessibility tool supporting 120+ currencies, 36+ languages and more than 500k downloads. Simply point a camera at the money in your hand, and the app will let you hear, see, or feel its value. What makes me the happiest is the worldwide community of amazing people we've met while testing and collecting banknotes from across the globe.
• B2B & SDK INTEGRATIONS
• Do you want your app or hardware to recognize money? We provide highly optimized, incredibly easy-to-integrate SDKs for both Android and iOS. Our technology is already powering specialized smart glasses and bespoke mobile devices for the visually impaired.
• CORE TECHNICAL EXPERTISE
• AI & Machine Learning: TensorFlow Lite with custom, in-house developed models
• Backend Infrastructure: AWS (EC2, S3)
• UX/UI: Deep optimization for mobile accessibility
• Monetization: Complex In-App Billing (subscriptions and one-time purchases)
• App Security: Custom RASP (Runtime Application Self-Protection) and robust anti-tampering defenses
• 🌍 Check our supported currencies: https://cashreader.app/en/currencies/
• 🤝 Don't see your currency? If you are willing to help us collect valid banknotes, please send me a message!

Apr 2017 – Jan 2018 · 9 mos · District Brno-City, Czech Republic

• Simply put, it lets you see the world around you through a filter created precisely for your type of color blindness. You'll see details you hadn't noticed before, and you'll be able to take more interesting photos.
• NowYouSee helps people with any form of color blindness while allowing everyone else understands their everyday troubles.
• Select from 6 correction filters (protanomaly, protanopia, deuteranomaly, deuteranopia, tritanomaly, tritanopia)
• Use three simulation filters to see the world through the eyes of people struggling with color blindness
• Take photos with automatically adjusted colors
• Real-time color conversion makes the whole process battery-friendly
• Detail experiences:
• GPU image filtering, OpenGL
• In-app Billing
• Camera API

Sep 2016 – Jan 2017 · 4 mos · District Brno-City, Czech Republic

• I helped Xmarton team with part of the application that controls your car remotely.
• Detail experiences:
• RxJava
• BLE device communication
• Realm database
• Retrofit network library

Mar 2015 – Jan 2019 · 3 yrs 10 mos · Okres Brno-město, Česká republika

• I joined CoolTicket startup in 2015 and started a complete redesign by maintaining thousands of active users. My responsibility was everything starting with architecture and coding to managing internal, alpha, and beta tests, and finally releasing on Google Play. We used many new technologies, such as BLE beacon technologies and machine learning in the computer vision field. The digital valuable principle is patent pending.
• The app has more than 200K downloads with a rating of 4,6 (data valid for 22 January 2019), and it is widely used in the Czech Republic.
• In 2021, it was renamed to BeerSport with a focus on just beer.
• You can find more here: https://www.beersport.com/cs/
• Detail experiences:
• RxJava 2
• Dagger 2
• Firebase (Remote Config, FCM, Dynamic Links)
• AWS (Kinesis, S3, EC2)
• TensorFlow Mobile
• Geofencing
• Java followed by Kotlin
• Testing and releasing on Google Play
• Maintaining legacy code, refactoring
• Analytics (Firebase Analytics, Google Analytics, Fabric)

Sep 2013 – Aug 2015 · 1 yr 11 mos · Okres Brno-město, Česká republika

• Developing a system for an intelligent home during master degree studies. Open-source project.
• Detail experiences:
• Smartwatch development (Sony SmartWatch 2)
• Google Cloud Messaging (GCM)
• Google Maps Android API v2
• Geofencing
• Google Analytics for Android
• Google Play - publishing, alpha and beta testing
• Emulator of hardware end-devices (Python)
• Git
• Github: https://github.com/BeeeOn

Jan 2013 – Dec 2018 · 5 yrs 11 mos · Brno

• Developing my own projects and contracts for external companies. For more details, see 'Projects' section.

Sep 2012 – May 2013 · 8 mos · Okres Brno-město, Česká republika

• Administrator in company (about 100 people) for Windows Server and end-devices.