Freelancers using Java in IslamabadFreelancers using Java in Islamabad
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SALIKYN ZERO's avatar
SALIKYN ZERO
Islamabad, Pakistan
Full-Stack Web, Mobile & Backend Systems Architect , gamedev
New to Contra
Full-Stack Web, Mobile & Backend Systems Architect , gamedev
Cover image for Build a custom 2D isometric
Build a custom 2D isometric game prototype featuring dynamic tilemap rendering, player movement mechanics, and object entity collision handling. Key Highlights: Isometric Rendering Engine: Built custom coordinate translation for smooth 2D isometric grid layout and depth sorting. Player & State System: Implemented responsive character movement controllers, directional sprite animations, and object interaction routines. Asset & Tile Architecture: Integrated modular environment tilesets, tree generation logic, and asset loading pipelines. Realm2D - Isometric 2D Game & RPG Prototype Tech Stack: Java, LibGDX / Custom 2D Engine, Game Architecture, OOP, Tilemap Logic.
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Cover image for High-Converting AI E-Commerce Ad: Hydration
High-Converting AI E-Commerce Ad: Hydration Serum Problem: Traditional studio shoots for beauty/cosmetic products are expensive ($3,000+ per shoot) and slow, making it difficult for e-commerce brands to rapidly test multiple video ad hooks on TikTok and Meta. Approach: Created a end-to-end AI visual production pipeline. Generated hyper-realistic macro liquid physics, skin textures, and product lighting using Nano Banana Pro and Leonardo, added camera motion using Kling 3.0, and synced ElevenLabs voiceovers with high-impact 3-second hook variations. Result: Cut visual production cost by 80% while delivering cinematic, 4K-ready video ad assets optimized for scroll-stopping retention and rapid A/B testing. Stack: Nano Banana Pro, Leonardo.ai (http://Leonardo.ai), Kling 3.0, Seedance 2.0, ElevenLabs, CapCut Need high-converting AI video ads for your e-commerce brand? Check out my AI Video Creation Service or send us a message.
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Cover image for Cinematic AI Product Reel: Minimalist
Cinematic AI Product Reel: Minimalist Tech Ring Problem: Hardware and SaaS startups often struggle to explain complex product functionality and premium aesthetics visually within the first 3 seconds of a social video ad feed. Approach: Designed dynamic glassmorphism UI overlays and 3D environment transitions. Utilized Flux and Leonardo for studio lighting consistency, Seedance 2.0 / Kling 3.0 for sweeping anamorphic camera motion, and Claude for narrative prompt generation. Result: Produced a sleek product showcase with high visual polish, zero physical manufacturing overhead, and native social-feed retention pacing. Stack: Leonardo Phoenix, Kling 3.0, Seedance 2.0, Gemini Pro, ElevenLabs,Claude Looking for cinematic AI video reels that stop the scroll? View my AI Video Service to discuss your product reel.
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Cover image for Hex Heist - 4-Player Combat
Hex Heist - 4-Player Combat Arena & Loot Systems (WORKING PROTOTYPE) Created a fast-paced 4-player arena combat game featuring real-time resource gathering, weapon mechanics, and custom player HUD interfaces. Key Highlights: 4-Player Arena Mechanics: Built synchronized 4-way spawn zones, free-for-all combat logic, and map boundary controls. Resource Gathering Pipeline: Programmed dynamic energy and crystal collection systems tied to central energy beams. Custom HUD & Shop UI: Designed and scripted real-time player stat tracking (Energy, Crystals, Kills) with an integrated in-game shop system. Client-Server State Sync: Written in Luau with optimized replication to handle zero-lag combat events across client connections. Tech Stack: Luau, Roblox Studio, Game Logic Scripting, UI/UX Design, Client-Server Networking.
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Java(1)
Usama Ali's avatar
Usama Ali
Islamabad, Pakistan
Develop native Android applications using Kotlin and Jetpack
New to Contra
Develop native Android applications using Kotlin and Jetpack
Cover image for Improve your existing Android application
Improve your existing Android application with reliable bug fixes, performance optimization, and seamless feature integration. I help businesses and developers maintain, upgrade, and scale their Android apps using modern development practices and clean, maintainable code. Services 🐞 Bug Fixing Crash and ANR resolution UI/UX issue fixes Memory leak detection Performance optimization App stability improvements Build and dependency issue fixes 🚀 Feature Development Add new screens and functionality Firebase integration REST API integration Push notifications Authentication (Email, Google, Phone) Payment gateway integration AI features (ChatGPT & Gemini) Camera, Maps, Location, and File Management Dark Mode support Offline functionality ⚙️ Code Improvements Refactor legacy code MVVM architecture implementation Jetpack Compose migration XML UI enhancements Room Database optimization Dependency updates Code cleanup and documentation Technologies Kotlin Java Jetpack Compose Android SDK MVVM Architecture Firebase Room Database Retrofit REST APIs Google Maps CameraX Google ML Kit OpenAI & Gemini APIs What You Can Expect
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Cover image for DocuMind AI is a modern
DocuMind AI is a modern Android application that transforms physical documents and PDFs into editable, searchable, and AI-powered insights. Built with Kotlin and Jetpack Compose, the app combines on-device OCR with AI summarization to help users digitize and understand documents in seconds. Features 📄 Smart Document Scanning Real-time document detection Auto edge detection and perspective correction Single and multi-page scanning High-quality document capture 🔍 On-Device OCR Fast and accurate text extraction Works offline using Google ML Kit Copy, edit, and save extracted text Supports printed documents with excellent accuracy 🤖 AI Document Summarization Generate concise summaries from lengthy documents Extract key information instantly Reduce reading time while preserving important details Powered by modern Large Language Models (LLMs) 📁 Document Management Save scanned documents locally View scan history Share extracted text and AI summaries Clean and intuitive document organization Tech Stack Kotlin Jetpack Compose MVVM Architecture Google ML Kit OCR Gemini / OpenAI API Android CameraX Room Database Material Design 3 Coroutines & Flow
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Cover image for Build intelligent Android applications with
Build intelligent Android applications with the latest AI technologies using Kotlin and Jetpack Compose. I develop modern, scalable, and high-performance Android apps that integrate advanced AI capabilities to deliver smarter user experiences. What I can build 🤖 ChatGPT & Gemini AI integration 🧠 AI Chatbots and Virtual Assistants 📄 OCR (Optical Character Recognition) 📷 Image & Text Recognition using Google ML Kit 🔥 Firebase Authentication, Firestore & Cloud Functions 🌐 REST API integration ⚡ Clean MVVM architecture 🎨 Modern Jetpack Compose UI 🚀 Performance optimization and bug fixing Technologies Kotlin Jetpack Compose Android SDK Firebase Google ML Kit OpenAI API (ChatGPT) Google Gemini API REST APIs MVVM Architecture Why work with me? Clean, maintainable, and scalable code Responsive and modern UI/UX Efficient API integration Performance-focused development Clear communication and timely delivery Ongoing support after project completion Whether you need an AI assistant, document scanner, OCR solution, chatbot, or a custom AI-powered Android application, I can help turn your idea into a polished, production-ready app.
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Cover image for I develop clean, maintainable applications
I develop clean, maintainable applications following MVVM and Clean Architecture, ensuring every project is easy to scale, optimize, and maintain. Whether you need a brand-new Android application, feature development, bug fixing, Firebase integration, or AI-powered functionality, I can help deliver reliable, production-ready solutions.
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Java(1)
Muhammad Haseeb's avatar
Muhammad Haseeb
Islamabad, Pakistan
Full Stack AI/ML Developer | Worked at @Sony
11
Followers
Full Stack AI/ML Developer | Worked at @Sony
Cover image for Data Scientist at Sony PlayStation
Data Scientist at Sony PlayStation
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Cover image for Revolutionary AI Agent for Automated 500K+ Award Updates
Built an autonomous AI agent that scrapes and updates 500K+ awards from across the web. The system intelligently finds new awards and refreshes existing data, reducing manual work by 80% and slashing update cycles from 6 months to just 3-4 weeks. Runs independently with minimal supervision.
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Cover image for Built the complete AI backend
Built the complete AI backend for a B2B SaaS serving 10K+ users, processing 100K+ invoices monthly. Developed custom AI models with LLM-powered multi-agent orchestration using Python and FastAPI. The system automates invoice extraction and validation, handling complex workflows at scale.
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Cover image for Tula Transformation | Personal AI
Tula Transformation | Personal AI Therapist Elevates Relationship
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Java(1)
Arham Malik's avatar
Arham Malik
Rawalpindi, Pakistan
Backend & AI engineer who ships systems fast and scale.
New to Contra
Backend & AI engineer who ships systems fast and scale.
Cover image for Skill Swap is a peer
Skill Swap is a peer to peer learning platform where you can be both a student and a teacher. I built the backend with Java Spring Boot, real time chat with WebSockets, and video calls with WebRTC. The matching algorithm finds people based on skills, ratings, and availability. You can switch roles anytime. It also has a trust based review system so fake reviews don’t ruin it. This was an MVP, but it proved that real time learning communities can work really well. For more details, please visit: https://arham-nexus.vercel.app/work/skillswap
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Cover image for This is a classic enterprise
This is a classic enterprise academic portal, but built solid. It uses  Web Forms, ASP.NET, C#, and SQL Server. The main challenge was role based access control because you have admins, faculty, TAs, and lab demonstrators all needing different permissions. I designed a three tier architecture with stored procedures and optimistic concurrency control so data doesn’t get messed up when people edit at the same time. Over 200 users per semester use it for task assignments and progress tracking. It’s not flashy, but it works perfectly. For more details, please visit: https://arham-nexus.vercel.app/work/talabportal
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Cover image for This is a native Android
This is a native Android app I built with Kotlin and Firebase. It connects tourists with verified local guides in real time. You open the app, see nearby guides, book a tour, and then you can track each other’s location live using Google Maps. I also added offline support because travel doesn’t always have perfect internet. Over 100 active users ended up using it,during the MVP. The best part? Battery usage was optimized so your phone doesn’t die halfway through the day. Really proud of how smooth it turned out. For more details, please visit: https://arham-nexus.vercel.app/work/raaheraast
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Cover image for Yeah, this one is a
Yeah, this one is a bit out there, but it was super fun. I built an AI that actually understands memes. It looks at the image and the text together using PyTorch, TensorFlow, and GPT 4. I used early and late fusion techniques to combine vision and language, plus Tesseract OCR to grab text from the image itself. The model hits over 95% accuracy on meme classification. It’s not your typical corporate project, but it shows how multimodal AI can understand humor, culture, and context. Definitely one of my favorite experiments. For more details, please visit: https://arham-nexus.vercel.app/work/memechecker
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Java(1)
Mustahsan Mustafa's avatar
Mustahsan Mustafa
Islamabad, Pakistan
Expert Backend & Fullstack Dev
Expert Backend & Fullstack Dev
Cover image for Catch Connect
Catch Connect
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Cover image for Coles Mobile
Coles Mobile
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Cover image for Sayurbox - Warehouse Management System
Sayurbox - Warehouse Management System
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Cover image for Gizmo - Gamify
Gizmo - Gamify
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Java(5)
Muhammad Usman's avatar
Muhammad Usman
proIslamabad, Pakistan
End-to-End IoT, AI & Web3 Solutions | REPLA Tech
5.0
Rating
28
Followers
End-to-End IoT, AI & Web3 Solutions | REPLA Tech
Cover image for AI Trainer application
AI Trainer application
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Cover image for Realtors Application
Realtors Application
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Cover image for TCI LMS | SaaS Platform for Tutors & Students
TCI LMS | SaaS Platform for Tutors & Students
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Cover image for ELD Software | IoT Fleet Compliance Platform
ELD Software | IoT Fleet Compliance Platform
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Java(2)