Tulitu Vlad-G. (@tully-8888)
31 karma
Experienced Mobile & Cross-Platform Developer
Bucharest
Lead Android/iOS Developer
About
Passionate Android & iOS Developer with a proven track record of over 800,000 downloads and strong revenue on the Play Store since 2020. Currently leading the mobile department at Blackshell, building a B2B VPN app while also contributing to macOS/Windows VPN apps and proxy browser extensions.
Expert in the full mobile development lifecycle, from concept to launch and post-release growth. Skilled in App Store Optimization (ASO), A/B testing, monetization strategies, user analytics, ad integration, and in-app purchases. Always learning and adapting to new technologies to create high-performing applications.
Expert in the full mobile development lifecycle, from concept to launch and post-release growth. Skilled in App Store Optimization (ASO), A/B testing, monetization strategies, user analytics, ad integration, and in-app purchases. Always learning and adapting to new technologies to create high-performing applications.
Skills
🪛 Kotlin
🏎️ Swift
🛠️ Java
📱 iOS
💻 MacOS
🎨 Jetpack Compose
🗺️ SwiftUI
🖼️ XML
✨ Clean arhitecture (Use Cases/SOLID)
🧾 MVVM (Model-View-Viewmodel)
🗡️ Dagger Hilt (Dependency Injection)
📥 Room (database)
🌐 RetroFit & OkHTTP3
🔀 Kotlin Coroutines & Flows
📟 Root/su Features
🔰 Code Versioning
🪲 Debugging/Leak Canary
🧮 Dependency Management (buildSrc + Kotlin DSL)
📁 Multi-Module
📊 Optimizing (Shrink Resources, Minify, R8, etc)
🎁 Ads & In-App Purchases
Experience
Lead Mobile Developer
Blackshell blackshell.tech
Nov 2023 to Present ⋅ Bucharest
As the Lead Mobile Developer at BlackShell, a cybersecurity innovator renowned for its cutting-edge VPN and network security solutions, I spearhead the entire mobile and cross-platform development lifecycle for Stingray VPN. With strategic oversight of the mobile department, I orchestrate the design, development, and deployment of native Android, iOS, and macOS applications, while contributing to Electron-based Windows/macOS desktop platforms, ensuring seamless integration of advanced encryption protocols (WireGuard®, OpenVPN®).
Android Developer
SmartDiesel/DKV kopilot.ro
May 2022 to Present ⋅ Bucharest, Romania
As the sole Android developer, led the complete overhaul of the "Kopilot" application, handling all aspects from design, coding, testing, debugging, to deployment. Undertook this project single-handedly and successfully transformed it using native Kotlin, significantly enhancing user experience and efficiency. Leveraged advanced techniques such as MVVM, Kotlin Coroutines, Flows, and Dagger Hilt for a complete redevelopment, driving the application's robustness and scalability. Successfully reduced app crashes by 80-90% by optimizing code and introducing rigorous testing procedures, resulting in a dramatic improvement in app performance and reliability. Integrated the Here Maps SDK to facilitate superior truck navigation features, effectively meeting user needs and increasing overall satisfaction. Utilized modern libraries like Coil for image loading, Room for local data persistence, and Retrofit for network interaction, contributing to the app's high-performance and smooth user experience. Set up AppMetrica for user metrics and analytics, generating valuable insights that drove continuous app improvements and informed strategic decision-making. These enhancements led to a significant increase in client acquisition rates, boosting the figures by 35-50%. Continually updated knowledge of industry trends, technologies, and best practices, driving ongoing innovation and maintaining high standards in the app development process. Provided guidance and mentorship to a novice colleague entering the mobile development field. Offered assistance in learning best practices, familiarizing with tools and libraries, and understanding complex concepts, contributing to their professional growth and development in mobile application technology.
Self-Published Indie Developer - Google Play Store
TheViciousGames/aBetterAndroid/Controversialz play.google.com
Oct 2019 to Present
Over three years as an Indie Developer, I've transformed my passion for innovation into a thriving presence on the Google Play Store. My apps, inspired by user interests and needs, have achieved over 700,000 downloads and thousands of positive reviews, testifying to the quality of my work. In this journey, I've sharpened key skills, including: Creativity and Problem-Solving: By designing and implementing app features that resonate with users. Project Management: By managing all stages of the app development cycle, ensuring the timely delivery of quality products. UI/UX Design: By developing user-friendly interfaces that enhance customer experiences and promote user retention. Data Analytics: By employing analytics tools to optimize app features and performance based on user engagement and feedback. Marketing and User Acquisition: By using strategic marketing and App Store Optimization to boost visibility and downloads. Feedback Management and Customer Service: By proactively handling user reviews, queries, and feedback to improve user satisfaction. This experience has not only broadened my technical skills but also fostered an entrepreneurial mindset, a cornerstone of my approach to digital innovation.
Projects
ProxyShell – Advanced SOCKS5 Proxy Manager for Firefox
Firefox Extension
ProxyShell is a powerful Firefox extension designed for B2B and B2C users who need seamless SOCKS5 proxy management directly within their browser. It enables users to easily configure, switch, and control proxy settings without affecting system-wide network configurations.
Built for privacy, security, and performance, ProxyShell supports multiple proxy profiles, auto-switching, and custom routing rules for a flexible browsing experience. Ideal for businesses, researchers, and privacy-conscious users, it ensures secure, efficient, and reliable proxy management within Firefox.
Stingray - B2B and B2C VPN
VPN App
JSKotlinGoSwift
Stingray is a high-performance B2B and B2C VPN solution designed for privacy, security, and seamless connectivity. Developed using native Android, iOS, and macOS, with contributions to the Electron-based macOS and Windows versions, Stingray delivers a robust and user-friendly VPN experience across multiple platforms.
Built for businesses and individual users, Stingray offers enterprise-grade encryption, fast and reliable servers, and an intuitive UI. It supports secure tunneling protocols, custom network configurations, and optimized performance for high-speed, low-latency connections.
With a strong focus on scalability and security, Stingray is engineered to meet the demands of both corporate environments and privacy-conscious users, ensuring a secure and uninterrupted online experience.
Kopilot
Kopilot is an innovative truck routing application designed to streamline the operations of delivery companies.
MVVMRoomFragmentsHiltNavigationRetrofitCoilKotlin
As the sole mobile developer for this project, I have successfully completed the Android version of the app and am currently finalizing the iOS version. The core functionality of Kopilot centers around intelligent route planning based on the specifications of the trucks and daily updated fuel prices, allowing transporters to consistently run profitable routes. Once on the road, drivers use Kopilot as a GPS navigation system. The app provides map localization and routing instructions in accordance with the planned route. It also offers route recommendations based on the type of vehicle, the specifics of the transport, and the countries being transited. Special maps for trucks and ADR routes are also available, providing drivers with the safest and most effective routes.
DPI Modifier
Changes device's display DPI (dots per inch).📍400.000 downloads on Play Store.
Root/su FeaturesXMLMVVMAppodealAndroid Native APIsAdmob SDKDagger HiltKotlin
Resolution Changer
Modifies display resolution.📍60.000 downloads on Play Store.
Android Native APIsRoot/su FeaturesXMLCoroutinesFlowsAdmob SDKMVVMkotlin
Random User Database
Generates a random list of fake users.
GlideMVVM (layers)NavigationClean arhitecture (Use Cases)Dagger HiltRetroFitScalable sizeOffline caching with RoomKotlin
Book of Crypto
Gathers details about cryptocurrencies (name, description, tags and team members) .
Dagger HiltJetpack ComposeMVVMClean arhitecture (Use Cases)RetroFitLeak CanaryKotlin
Refresh Rate Checker
Displays the device's refresh rate.📍75.000 downloads on Play Store.
AsyncTaskAdmob SDKAndroid Native APIsXMLJava
aBetterAndroid website
Developed aBetterAndroid website. The goal was for the website to look exactly like a native android application.
MitigationsOff
Disables security mitigations for a small gain in CPU performance.
Dagger HiltXMLRoot/su FeaturesMVVMKotlin Coroutines& FlowsKotlin
Order Manager
Manager of flower orders gathered through an API. Orders can be modified, saved and all of them have a detailed-view with more information about each one of them
Dagger HiltRecycler ViewMVVMRoomXMLKotlin Coroutines& FlowsRetroFitKotlin
Resolution Checker
Shows three types of display resolution.📍19.000 downloads on Play Store.
XMLDagger HiltAndroid Native APIsKotlin Coroutines,FlowsMVVMKotlin
News App
Application that gathers news through an API. News are displayed in a recycler view, they can be read through a web view that shows the full article. Articles can be saved and it also has a search function.
XMLMVVMRetroFitRecycler ViewKotlin Coroutines& FlowsRoomKotlin
Real-Time Refresh Rate Checker
Displays a floating text window over other apps which shows the current refresh rate and updates it every second through a foreground service.📍8.500 Downloads on Play Store.
Android Native APIsForeground ServiceXMLJava
Screen Information
Displays a lot of display details gathered through native APIs.📍2000 downloads on Play Store.
AsyncTaskXMLAndroid Native APIsAdmob SDK🛠️ Java
aBetter Store
aBetterAndroid's store that contains system-modding apps for Android. Similar to Play Store but only for enthusiasts. Currently in developing.
Multi-ModuleClean arhitecture (Use Cases/SOLID)Dependency Management (buildSrc + Kotlin DSL)Jetpack ComposeDagger HiltMVVMDebugging/Leak CanaryKotlin
Root Checker
Checks if user's device is rooted.📍1500 downloads on Play Store.
XMLRoot/su FeaturesAdmob SDKJava
S20 Advanced Menu
A complex menu for Samsung Galaxy S20 devices for advanced Android users.I personally looked through all settings that can be accessed through ADB/Shell like (GLOBAL/SECURE/SYSTEM) and Samsung-only settings.. Multiple features like changing refresh rate, resolution, multiple boot options, boost (killing useless processes/services, trimming memory), Ultra Power Saving Mode, Adaptive Power Saving Mode, ADB Debugging switch.
XMLRoot/su FeaturesAsyncTaskJava
S20 Advanced LockScreen
Exclusive to Samsung Galaxy S20s,this app will automatically switch to lowest refresh rate available while screen is off for power saving.📍400 downloads on Play Store.
Broadcast ReceiverXMLRoot/su FeaturesJava
HDR Checker
Shows HDR capabilities of the device. 📍10.000 downloads on Play Store.
XMLAndroid Native APIsJava
Advanced Reboot
User can reboot to recovery, download mode, safe mode, bootloader or fastboot.📍8000 downloads on Play Store.
Admob SDKXMLRoot/su FeaturesJava
DNSFlusher
Flushes DNS by running ADB/Shell commands for every Android version. 📍2000 downloads on Play Store.
Root/su FeaturesAdmob SDKXMLJava
Kishu Inu Price
Converts user's balance of Kishu Inu cryptocurrency into dollars. Price is gathered through a public API. It can also help boosting the cryptocurrency's rank on a certain site by reloading the page every 5 seconds in background.📍 3500 downloads on Play Store.
XMLRetroFitAdmob SDKForeground ServiceJava
PingMark
Calculates the latency between user and some popular websites or mobile game servers by using Shell commands.
XMLAsyncTaskShellAdmob SDK
Jumper : Endless Arcade
Endless jumping type of game made with Unity and C#, textures created by myself.
Unity AdsUnity In-app-purchasesUnityC#
S20 Screen Tweaker
Predecessor of S20 Advanced Menu. Changes between different screen modes. Only for Samsung Galaxy S20.📍 3400 downloads on Play Store.
Admob SDKAsyncTaskXMLRoot/su FeaturesJava
DPI Checker
Display current DPI (dots per inch) value. 📍16.000 downloads on Play Store.
XMLRoot/su FeaturesAndroid Native APIsJava
Recovery Reboot
Reboots to recovery using root-only Shell commands. 📍2000 downloads on Play Store.
XMLRoot/su FeaturesAdmob SDKJava
Fastboot Reboot
Reboots to fastboot mode using root-only Shell commands.📍4600 downloads on Play Store.
XMLRoot/su FeaturesAdmob SDKJava
Rom Inu
Token created on Binance Smart Chain blockchain. Rom Inu was a meme token that was not released. I made it simply for testing my abilities of learning and adopting new tehnologies. It was an interesting experience. It has unique features like anti-dumping, anti-bots and a cool strategy for keeping the price going up (deflationary asset).
Solidity
Certificates
Android Developer Fundamentals events.withgoogle.com
Jan 2020
Professional App Development With CI/CD drive.google.com
Philipp Lackner
Dec 24, 2022
ID:ZGEOFZ This course provides a thorough understanding of the advanced aspects of Android app development, focusing specifically on the implementation of Continuous Integration and Continuous Deployment (CI/CD) using Bitrise. It aims to streamline the app development process, improve code quality, and expedite the release cycle.
Languages
English ⋅ Fluent
Romanian ⋅ Native
Education
West University of Timisoara info.uvt.ro
Bachelor's degree, Computer Science
Sep 2018 to Jul 2021
Gained a solid understanding of computer science principles and acquired the ability to apply them across various domains. This provided a foundation for easy integration into the IT industry and further professional development through Master's programs. Developed a deep understanding of theoretical and practical knowledge, including software analysis, design, implementation, and maintenance, as well as complex systems modeling, evaluation, and interpretation. Acquired skills in problem analysis and the construction of abstract, formal, and computational models, utilizing theoretical computer science concepts. Comprehended the structure and operation of computing systems and mastered data storage, organization, and processing. Harnessed practical skills such as specific programming languages, software verification and testing, project planning, and implementation. Developed expertise in system configuration and integration, software architecture design, network administration, and data security strategies. Acquired proficiency in technical documentation and consulting in the field.
Liceul Tehnologic "Matei Corvin" Timisoara facebook.com
Junior College, Computer Science
Oct 2019 to Jun 2021
Junior College/ Post-High School Education, Computer Science Graduated with a comprehensive understanding of broad computer science principles, demonstrating proficiency in a diverse set of skills and concepts. Gained specialized expertise in mobile development, focusing on the design, development, and deployment of applications for Android and iOS platforms. Built a strong foundational knowledge of operating systems, data structures, algorithms, and software design principles. Cultivated technical aptitude and problem-solving abilities, with a strong emphasis on translating complex business requirements into effective digital solutions. Applied practical learning through numerous hands-on projects, showcasing the ability to drive projects from conception to completion.