FDFedja Drndarski
@fedjadrndarski
Senior Android developer focused on modern Kotlin, Jetpack, Compose and clean architecture.
SerbiaWhat I'm looking for
I am a Senior Android developer with over 10 years of experience building mobile and OTT TV applications across native and JavaScript environments. I specialize in modern Android development using Kotlin, Jetpack libraries, Jetpack Compose, Coroutines with Flow, MVI and Clean Architecture.
At Grid Dynamics I rewrote PetSmart's e‑commerce Android app from React Native to native Kotlin, implemented multimodular Clean and MVI architecture, and practiced test‑driven development. Previously I led large OTT projects at iWedia (RT‑RK) including True OTT TV and platform ports for LG WebOS and Samsung Tizen.
I have deep experience with payment integrations, advertising systems, performance optimization, monitoring tools and end‑to‑end app lifecycles, and I mentor and interview candidates as part of technical hiring. I am passionate about quality, performance, user experience and exploring generative AI to enhance mobile development.
I hold a BcS from the University of Belgrade and multiple Android, Kotlin, JavaScript and GenAI certifications, and I communicate professionally in English (B2) while being a native Serbian speaker.
Experience
Work history, roles, and key accomplishments
Senior Android Developer
Grid Dynamics
Feb 2024 - Aug 2025 (1 year 6 months)
Rewrote PetSmart's e‑commerce Android app from React Native to native Kotlin, delivering product detail, autoship, cart, checkout and analytics with multimodule Clean + MVI architecture and TDD to improve quality and maintainability.
Senior Software Developer
iWedia (RT-RK)
Sep 2018 - Sep 2023 (5 years)
Developed and maintained OTT TV and Smart TV apps (True OTT, LG WebOS, Samsung Tizen) delivering 80+ features, ported STB apps to JavaScript and improved video player core for SMTV products.
Android Developer
Presta doo
Jan 2018 - May 2022 (4 years 4 months)
Led development and full lifecycle of Scratchy Android game, handling game logic, UI, performance optimization, payment features and publishing to improve user engagement.
Android Developer
Comtrade Digital Services
Oct 2017 - Jan 2018 (3 months)
Contributed to a Johnson & Johnson healthcare app by implementing user-focused features, writing unit/UI tests and improving app reliability and compliance.
Android Developer
Spark Hire
Dec 2015 - Sep 2017 (1 year 9 months)
Developed and maintained Spark Hire's Android interviewing app, adding features, fixing bugs and integrating ExoPlayer to enhance user experience for recruiters and candidates.
Android Developer
Pakedge Devices & Software
Jul 2014 - Oct 2015 (1 year 3 months)
Designed and implemented a responsive UI for smart home network control, integrating application layer with low-level .so library and Pakedge SDK to simplify device management.
Education
Degrees, certifications, and relevant coursework
Soft skills courses (Delegation, Mentoring, Negotiation, Conflict Management, Effective Meetings)
Certificate, Professional Development
2025 - 2025
Completed a series of soft skills courses in 2025 covering delegation, mentoring, negotiation, conflict management, and effective meetings.
Kotlin Multiplatform Mobile - practice (course)
Certificate, Kotlin Multiplatform
2025 - 2025
Completed practical training in Kotlin Multiplatform Mobile in 2025.
Google Cloud / Vertex AI and Generative AI courses
Certificate, Generative AI / Machine Learning
2024 - 2024
Completed multiple courses on prompt design, generative AI, LLMs, responsible AI, and building applications with Google Cloud in 2024.
UBUdemy - Jetpack, Architecture & More - Advanced Android Bootcamp
Certificate, Advanced Android Development
2023 - 2023
Completed an advanced Android bootcamp covering Jetpack, Compose, MVVM, Clean Architecture, Dagger/Hilt, Coroutines, Retrofit and testing.
UDUdemy - Kotlin for Android and Java Developers
Certificate, Kotlin
2023 - 2023
Completed a Kotlin course aimed at Android and Java developers on Udemy in 2023.
UGUdemy - JavaScript: The Complete Guide 2022
Certificate, JavaScript
2022 - 2022
Completed a comprehensive JavaScript course from beginner to advanced level on Udemy in 2022.
UGUdemy - React: The Complete Guide 2022
Certificate, React / Frontend Development
2022 - 2022
Completed a React.js and Next.js course including Router and Redux on Udemy in 2022.
Android AOSP under hood course (certificate)
Certificate, Android System Development
2020 - 2020
Completed a course on building Android images and writing system services using C and AIDL at the system level.
GiT Gerrit course (certificate)
Certificate, Version Control / Code Review
2019 - 2019
Completed a GiT Gerrit course covering code review and project management for Git-based projects.
UMUniversity of Belgrade, Faculty of Mathematics
Bachelor of Science, Computer Science
2006 - 2012
Completed a Bachelor of Computer Science (BcS) degree at the Faculty of Mathematics, University of Belgrade from 2006 to 2012.
Availability
Location
SerbiaAuthorized to work in
Job categories
Skills
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