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  • $20 hourly
    • 4.8/5
    • (68 jobs)
    🚀 8+ Years of Experience | Scalable & AI-Integrated Mobile Apps Hi! I'm Brijesh — a seasoned iOS Engineer and Full-Stack Mobile App Developer with 14+ years of experience building high-performance mobile apps that users love. I specialise in creating secure, scalable, and beautifully designed apps using cutting-edge technologies like SwiftUI, React Native, and OpenAI. 📱 Mobile App Expertise 🧠 SwiftUI, Swift (1.2 – 5.x), Objective-C 📱 React Native, Android (Java/Kotlin) ⌚ Apple WatchKit, Push Notifications 🎥 Live Streaming, Custom Camera, Audio/Video Processing 🗂 CoreData, SQLite, AVFoundation, Calendar, QR/Barcode Scanning 💬 XMPP Chat, Firebase Chat, Local & Push Notifications 🤖 AI & Backend Integration 🧠 OpenAI API Integration (Chat, GenAI, AI-Powered Features) ☁️ Firebase (Auth, Firestore, Realtime DB, ML Kit), Supabase 🧑‍💻 Node.js, PHP, Python (Django), REST/SOAP APIs 🔁 Fastlane, GitHub Actions (CI/CD), AWS, Google Cloud 💳 Third-Party APIs & Payment Systems 💰 Stripe, PayPal, Razorpay 🌍 Google APIs: Maps, Calendar, Drive, OAuth 📤 Mailgun, Mandrill, Parse Server 🔥 Why Clients Choose Me ✅ 8+ years of hands-on mobile dev experience 💬 Clear, fast communication & regular updates 🔧 Clean code, full QA support & scalable architecture 🏆 Delivered 100+ apps — from MVPs to enterprise-grade platforms
    Featured Skill XMPP
    Swift
    iPhone & iPad Apps
    iPhone UI Design
    Next.js
    Shopify
    Advanced Analytics
    React Native
    Native App Development
    Android
    Mobile App Development
    Bug Fix
    iOS Development
    Android App Development
    Mobile App
  • $25 hourly
    • 4.8/5
    • (134 jobs)
    I’m a seasoned Full Stack Developer with a wealth of experience, having dedicated 8 years to the roles of Software Developer/Architect. My specialization lies in the realm of Mobile App development with a particular focus on creating innovative solutions for a wide spectrum of industries, with particular emphasis on chat-related and AI-related applications Initially, I had started my journey with “Accenture” and after having a good enough experience and knowledge I’ve started to work on my own as an independent freelancer" I’m completely available with an excellent solution and provide the best industry experience. --> Our experience & Area of expertise: I’m very passionate about creating intelligent systems that push the boundaries of human-computer interaction. With 3 years of experience in the field, I have honed my skills in developing cutting-edge AI solutions and bringing transformative ideas to life. Related to Database; I've worked with SQL relational databases like MS-SQL, MySQL, PostgreSQL, Oracle DB and no SQL databases like MongoDB, DynamoDB and Elastic search. I have strong hands on experience working with Firebase and have worked with following Firebase services as: -- Live Database -- Fire Store -- Firebase Functions -- Analytics -- Ad mob integration -- Notifications -- Test labs Worked well with the following Cloud AWS Services like below: -- Lamba -- Ec2 -- S3 -- Fargate -- Cognito -- Route 53 -- SNS -- Api Gateway -- EBS -- RDS -- Elastic search and Kendra. And good working knowledge with other Cloud Services : -- Azure -- GCP -- Linode -- DigitalOcean and Docker based images. Backend Development: I’m very good with ( Java as well as Node.js ). I’ve worked with following Java frameworks as below; -- Spring boot -- Spring MVC -- Spring security -- JPA, Hibernate -- JSF I have developed more than 100 applications in Mobile (Android/IOS), Desktop (Windows/Linux/Mac) and web applications for the different industries and their links such as; -- Instant Messaging/ Voice/ Video calling (WhatsApp/Telegram/Wechat) -- Food Delivery (UberEats/Swiggy) -- Cab booking apps (Ola/Uber) -- Hospital management (Doctor/ Patient appointment schedule) -- Booking system (Movie ticket booking / Postpaid/ Prepaid Recharges) -- Wallet management (Fund Transfer / Pay using wallets) -- Fantasy games (Dream11/ Sorare) -- Crypto based NFT minting platforms -- Dating apps (Tinder/ Bumble) -- Social media apps (Tiktok/ Facebook) -- Media streaming apps (Netflix) -- Fitness Apps Have a look few of our works that may interest you are as: =================================================== -> Instant Messaging: Okdone (like WhatsApp) Android: play.google.com/store/apps/details?id=io.okdone.chat Aapoon (like Telegram) Android: play.google.com/store/apps/details?id=go.socialchains.app iOS: apps.apple.com/in/app/aapoon/id1484191346 ==================================================== -> AI: AutoBiographer (Story Maker in written format) Android: play.google.com/store/apps/details?id=com.autobiography iOS: apps.apple.com/us/app/autobiographer/id6450035146 ArtiPic : AI Art Generator (Image Creator) Android: play.google.com/store/apps/details?id=ai.image.creator ===================================================== -> Dating: Hug Android: play.google.com/store/apps/details?id=com.hug.app iOS: apps.apple.com/in/app/허그-나를-위한-대화/id1568840820 Hihand Android: play.google.com/store/apps/details?id=com.hihand.app iOS: apps.apple.com/in/app/id6448904608 ===================================================== -> Fitness: Finutss Android: play.google.com/store/apps/details?id=com.finutss.metatrack.app ===================================================== -> Social Media: Adventure: The Bucket List App Android: play.google.com/store/apps/details?id=com.app.real4adventure Commune+ Android: play.google.com/store/apps/details?id=com.social.topg iOS: apps.apple.com/us/app/commune/id6450535334 Yeay Android : play.google.com/store/apps/details?id=yeay.tv.yeay IOS: apps.apple.com/us/app/yeay/id1070699048 Klokbox Family Memory Boxes Android: play.google.com/store/apps/details?id=com.klokbox iOS: apps.apple.com/us/app/klokbox-family-memory-boxes/id1611328703 ================================================== -> Streaming: Snibble (like Netflix) Android: play.google.com/store/apps/details?id=com.snibblecorp.snibble&hl=en_IN&gl=US iOS: apps.apple.com/us/app/snibble/id1464594506?l=lt Telly (Track TV Shows & Movies) Android: play.google.com/store/apps/details?id=com.telly.studios iOS: apps.apple.com/ca/app/telly-track-tv-shows-movies/id1589012731 ==================================================== -> Rental Booking: DriveNow (Car Rental App) Android: play.google.com/store/apps/details?id=com.drive_now ==================================================== Please take a look and ensure yourself that we are very good at delivering your requirements in a very professional way. Let’s discuss ahead.
    Featured Skill XMPP
    VoIP
    AWS Lambda
    Chat & Messaging Software
    Flutter
    Amazon ECS
    Amazon EC2
    Java
    MQTT
    Mobile App Development
    Dart
    Microsoft Azure
    Android App Development
  • $22 hourly
    • 5.0/5
    • (13 jobs)
    ExpertInAsia Inc. is headquartered in the City Indore within the heart of Madhya Pradesh, India. The company has extensive experience in Software development. Our team has expertise in Mobile and Web Development in various technology like Angular, NodeJS, Java, Core PHP, Laravel, Yii, CakePHP, Symfony, Zend, CodeIgniter, WordPress and to all its related Web and Mobile Technologies like android, IOS, Flutter, React Native and ionic. We also have a separate graphics team as we believe in the best content. We are master and expert in below technologies - #iOS/Android application development #Cross Platform App Development (Flutter, React-Native, ionic) #MEAN #MERN #Codeigniter #.Net Development #E-commerce solutions #Laravel #Bootstrap tweaking #NodeJS/AngularJS/ReactJS Development #Wordpress Development #AWS Hosting #Chatbot development (Landbot / DialogFlow) Just click on Hire Me Button for a long term business relationship. Thanks & Regards Expertinasia
    Featured Skill XMPP
    Apache Cordova
    iOS Development
    Linux System Administration
    Apache Administration
    Amazon EC2
    FFmpeg
    Android App Development
    Microsoft IIS
    DNS
  • $30 hourly
    • 4.5/5
    • (44 jobs)
    With 14+ years of experience, I specialize in iOS & Android app development, delivering high-performance, scalable applications across AI, VoIP, secure communication, streaming, IoT, fintech, fitness, dating, taxi, and e-commerce. My apps are live globally, ensuring seamless functionality and user satisfaction. I actively contribute to open-source projects, driving tech innovation. Key Skills & Expertise Mobile App Development * iOS: Swift, SwiftUI, Objective-C * Android: Java, Kotlin Secure Communication & VoIP * XMPP, Ejabberd, MongooseIM, WebRTC, VoIP, conference programming * VoIP Integration: QuickBlox, Jitsi, Sinch, Agora, LiveSwitch, Twilio, CallKit Emerging Technologies * AI-powered Apps & Chatbots * Blockchain & Wallet Development * Augmented Reality (AR) Industry-Specific Solutions * Health & Fitness: Wellness tracking, workout plans, fitness goals * Medical Apps: Telemedicine, patient monitoring, appointment scheduling * Call & Conference Apps: VoIP calling, video conferencing, secure communication * Dating Apps: Advanced matchmaking, secure chat, user privacy * Taxi & Ride-Hailing Apps: GPS navigation, payment integration * Restaurant & Logistics: Food delivery and fleet management Streaming & IoT Connectivity * Streaming Apps: Audio/video streaming solutions * IoT Connectivity: Bluetooth/BLE integration with IoT devices Additional Expertise * Custom Jitsi Solutions: UI/feature customization * Device-Specific Development: iPad, Mac OS, Apple Watch * Payment & API Integration: Stripe, Firebase, Google Libraries * Real-Time GPS Tracking: Google/Apple Maps integration * Optimization & Maintenance: Bug fixing, code refactoring, performance tuning * App Deployment: Apple App Store, Google Play, TestFlight Work Approach & Values * Clear Communication: Regular updates and transparency in every step * Efficiency & Time Management: Delivering projects on time, without compromising quality * Independent & Team Player: Comfortable working solo or in collaborative environments * User-Centric Development: Focused on high-quality apps that drive engagement & success Why Work With Me? I am passionate about crafting scalable, feature-rich, and impactful applications that combine cutting-edge technology with a seamless user experience. My ability to deliver high-quality solutions quickly and efficiently has earned me long-term client relationships and top-tier satisfaction ratings. Let’s collaborate to bring your vision to life with a world-class mobile application! 🚀
    Featured Skill XMPP
    SwiftUI
    Android App Development
    iOS Development
    ChatGPT
    Blockchain
    Web3
    VoIP
    Swift
    Objective-C
    WebRTC
    Android
    iOS
    Kotlin
  • $30 hourly
    • 4.5/5
    • (78 jobs)
    👨‍💻 Professional Summary I am a seasoned software engineer with over 13 years of experience specializing in video streaming, web development, and mobile application development. Throughout my career, I have architected and delivered custom solutions for: Video transcoding and live recording Video conferencing and real-time chat IP camera and IPTV channel restreaming Interactive media applications and rich video UIs My development philosophy emphasizes starting with a proof of concept (PoC) or live demo to ensure mutual clarity and alignment before initiating full-scale implementation. This approach consistently helps streamline project expectations and delivery. 🎓 Academic Background Postgraduate Degree (2007) Began my professional career working with Java EE technologies including Struts, Spring, and Hibernate. 📱 Mobile & Real-time Communication Experience Developed core Android applications since 2010 Built XMPP-based chat apps for iOS Integrated real-time communication systems using WebRTC, Socket.IO, and Node.js 🎥 Video Streaming Expertise Hands-on experience with major streaming platforms including Wowza, Red5, and Adobe FMS since 2009 Built custom WebRTC-based solutions using Node.js, React.js, Socket.IO, Livekit and HTML5 Developed tools with Fabric.js for HTML5 canvas-based video editing and live drawing overlays 💡 Work Ethic I believe that dedication, transparency, and an honest effort are key to achieving successful outcomes. I continuously strive to adopt evolving technologies that enhance end-user experience and system performance.
    Featured Skill XMPP
    Video Conversion
    Adobe Flash
    Core Java
    Wowza Media Server
    Video Stream
    FFmpeg
    Red5
    WordPress
    PHP
    iOS Development
    Java
    WebRTC
    Node.js
  • $40 hourly
    • 5.0/5
    • (22 jobs)
    💻 Full-Stack Web Developer | Laravel, Shopify Apps, API Integrations, React With over 10 years of experience in web-based software development and a first-class MCA degree from MDU Rohtak, I bring a balanced mix of backend strength and frontend finesse to every project. ✅ Key Skills & Specializations: Shopify App Development: Expert in building custom Shopify apps using Polaris components with a deep understanding of Shopify's API ecosystem. I can craft apps that meet the rigorous standards of the Built for Shopify program, including performance, UX, and integration best practices. PHP, Laravel & CodeIgniter: Strong command over modern PHP frameworks; I develop scalable, secure, and maintainable web applications. JavaScript, React & Angular: Proficient in crafting responsive UIs and SPAs using React (including Shopify Polaris) and Angular. API Integrations: Extensive experience working with REST and GraphQL APIs, including third-party services and custom backend systems. WordPress Development: Deep knowledge of WordPress core, plugin development, and theme customization. Server Management: Skilled in setting up and maintaining LAMP stacks (Apache, MySQL, PHP) on Ubuntu VPS servers via SSH. 🛠️ Notable Capabilities: Develop Shopify apps that handle advanced features like subscription models, metafield customization, and embedded app experiences using App Bridge. Custom Shopify storefront and checkout extensions. Automation tools and internal utilities for businesses to streamline their operations. Web tools that transform manual processes into digital workflows. 🔍 Why Me? I’m not just a coder — I understand technical architecture, user experience, and business needs. My clients value my ability to turn vague requirements into production-ready solutions that scale.
    Featured Skill XMPP
    Shopify Apps
    Shopify
    Android App Development
    Database Architecture
    Web Development
    WordPress
    API Integration
    MySQL
    WordPress Plugin
    React
    PHP
    Laravel
    JavaScript
    Custom PHP
  • $40 hourly
    • 4.7/5
    • (26 jobs)
    12+ years of IT experience, from configuring to deploying scalable applications worldwide. Keeping up with the latest technologies to ensure your systems are running smoothly. Ashwani Sahota is a Cloud Solution Architect & DevOps Consultant | Expertise in Jitsi-WebRTC , Architect - Deploy Scalable & High Availability Applications Expertise & Skills AWS | Microsoft Azure | Google Cloud Platform | DevOps | CI/CD concepts | Jenkins | Dockers | Kubernetes | Ansible | Linux | Terraform | SSO | KeyCloak | MongooseIM XMPP | Scalable & High Availability Clusters | Crafting connections and conversations. Ashwani Sahota bring projects to life with great attention to detail, ensuring each one is completed to the highest standards. Delivering outstanding results every single time. Quality and customer satisfaction is Ashwani's top priority.
    Featured Skill XMPP
    Load Testing
    Single Sign-On
    Cloud Architecture
    Video Stream
    WebRTC
    Solution Architecture
    DevOps
    Linux
    Node.js
    Amazon Web Services
    CI/CD
    Kubernetes
  • $40 hourly
    • 4.6/5
    • (14 jobs)
    ⭐ ReactJs and ReactNative/ Flutter expert (Web application) ⭐ ElectronJs expert (Desktop application) ⭐ Jitsi | Kurento | Twillo | Agora, WebRTC expert (Video conference Applications) ⭐ NodeJs | NestJs | PHP | Python expert (Backend development) ⭐ NextJs Expert ( SEO friendly frontend) ⭐ AWS, GCP, Digital ocean, Azure server setup and configuration (Server setup) ⭐ Docker, Kubernetes, Terraform, Helm expert (Application setup with auto scaling, Load balancing) ⭐ Nginx ingress ⭐ Nginx, Apache, Lua, FFMPEG, Xmpp ⭐ Shopify expert ⭐ Experience: 11+ years (Since 2012) ⭐ 150+ projects completed ► Jitsi-meet, Mediasoup, Livekit and Kurento skills:- ✔ Install Jitsi-meet on the server and configure. ✔ Auto scale and load balancing setup using Kubernetes, Docker, Heml and Terraform ✔ Integration of video conferencing in a Web app / Mobile app ✔ Enabled recording / Jibri configuration. ✔ Custom Web, Mobile, and Desktop application development with video conferencing, Live streaming, Live games, Live interaction. ✔ Electron application development. ✔ API integration In Jitsi-meet. ► DevOps Skills:- ✔ Application setup on the kubernetes cluster on any server provider. ✔ Auto scaling and load balancing of the application using Haproxy and Nginx ingress ✔ Kubernetes setup issue fixing ► Laravel Skills:- ✔ Laravel application development. ✔ Laravel plugin development. ✔ Laravel plugin integration. ► Shopify Skills:- ✔ Shopify design and development. ✔ Shopify plugin development. ► ReactJS, Nodejs and ReactNative Skills:- ✔ Mobile application development. ✔ Audio/Video conference application development using reactnative_webrtc. ✔ NodeJs backend and API development ✔ Frontend application deveopment using ReactJs/NextJs I look forward to working with you ! ✨
    Featured Skill XMPP
    Mobile App Development
    Firebase
    FFmpeg
    WebRTC
    React Native
    API
    iOS
    Video Stream
    API Development
    Node.js
    JavaScript
    Docker
    React
    Three.js
  • $10 hourly
    • 5.0/5
    • (23 jobs)
    💎🏅7+ years of experience💎🏅5-star service💎🏅Upwork verified💎🏅100% customer satisfaction ➤ Native app development using Kotlin/Java and Flutter. ➤ Skilled in Firebase, SQL, Facebook API, Google API, hybrid app development, Kotlin, C++, and Android. ➤ Knowledge of Android libraries and frameworks such as Jetpack Compose, RxJava and Dagger 2, Retrofit. ➤ Clean code using MVVM or MVP. ➤ Client-server using REST API via JSON. ➤ Familiarity with Git, GitHub, and good version control practices. ➤ Integration for Firebase services like Firestore, Realtime Database, Cloud Messaging, Crashalitycs, or custom events(useful for App store optimization). ➤ Material design in accordance with Google material guidelines. ➤ Proficient with Google Play developer console - production or open/closed testing publishing; ➤ Familiar with Google Play Privacy Policy (sometimes a simple disparity can lead to the app. rejection/suspension or even banned account). ➤ Experienced in working on chatting applications with XMPP connections. I have good experience in writing the unit test for better and speedy diagnosis and better development testing with following good java doc comments, which is very useful while working with a team and better documentation. I do have experience of SQL databases and NO-SQL databases and having used both client and server-side, so I better know the advantages/disadvantages and how to deal with the limitations. I have developed quality applications with CI/CD and automation build and publishing tools. I managed all the concerns about security, battery consumption, memory management, notification management in Chinese products. Most of my chat applications have implemented E2E Encryption with OMEMO for better privacy control for chat messages. Thanks, Sagar Poshiya ---------------------------------------------------------------------------------------------------------- Native Android App Development, Native iOS App Development, Flutter Cross-Platform App Development, App Development, Phone, Firebase, UI/UX Design, Prototype, RESTful API, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, Phone, API Development, API Integration, Front End Development, Back End Development, QA, Unit Testing, Regression Testing, Dating App Development, Ecommerce App Development, Ride Booking App Development, 3rd Party SDK Integration, Realm Database, SQLite, MySQL, Firebase Cloud Firestore, Firebase Realtime Database, Kotlin, Swift, Java, Dart, SwiftUI, Twilio API, Mapbox, HealthKit, Alamofire, Google Analytics, Amazon Web Services, Butter Knife, Core Data, UIKit, MapKit, XMPP.
    Featured Skill XMPP
    Database Management System
    WordPress
    Shopify
    Mobile Game Development
    MEAN Stack
    Vue.js
    Angular 5
    Game
    Laravel
    Android NDK
    Flutter
    Unity
    Kotlin
    Java
    Android
    Firebase
    Social Media Account Integration
    iOS
    Native App Development
  • $16 hourly
    • 4.9/5
    • (4 jobs)
    TECHNICAL KNOWLEDGE ß Programming Languages C, C ++, C#, Objective-C, Swift 4 Server O. S. Window XP, Window 7, Mac Database Systems MS Access, SQL Server, Sqlite Web Technologies& Services HTML , XML, JSON, Asp.net
    Featured Skill XMPP
    Core Data
    Objective-C
    Swift
    Bluetooth
  • $30 hourly
    • 5.0/5
    • (20 jobs)
    Mobile App Developer | Android (Java/Kotlin) | iOS (Swift/SwiftUI) | Flutter & React Native Expert | 15+ Years of Experience I am a seasoned mobile app developer with over 14 years of experience in building high-performance, scalable applications for both Android and iOS. I specialize in Native development (Java/Kotlin for Android, Swift/SwiftUI for iOS) as well as cross-platform solutions using Flutter and React Native, delivering seamless, consistent user experiences across platforms. [ ] Core Skills & Services: Native Android (Java/Kotlin) & iOS (Swift/SwiftUI/Objective-C) Cross-Platform Development (Flutter, React Native) Real-Time Communication (WebRTC, Jitsi, Live Streaming) UI/UX Polish & Performance Optimization Firebase, REST APIs, WebSockets, Push Notifications Agile Development, MVP to Full-Scale Product Delivery Play Store & App Store Deployment [ ] Specialized Experience: Audio/Video Calls, Conferencing & Live Streaming Integrated solutions using WebRTC, Jitsi, and custom signaling servers Hands-on experience building apps for secure, low-latency real-time communication Scalable architecture for group calls, screen sharing, and chat features [ ] I follow Agile methodology, breaking projects into manageable sprints with frequent feedback cycles to ensure alignment and transparency.
    Featured Skill XMPP
    Erlang
    Payment Gateway Integration
    Android App Development
    AngularJS
    PHP
    Kotlin
    Java
    Chat & Messaging Software
    WebRTC
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    SUMMARY: Seasoned IT and Telecom professional with 15+ years of experience in IT, Telecom, and VoIP support, specializing in infrastructure operations, incident management, and Tier 1/Tier 2 customer support. Proven success in leading technical teams, driving high service uptime, resolving complex issues, and delivering end-to-end support for mobile, desktop, and telecom platforms. Adept at collaborating with engineering, QA, and DevOps for rapid resolution and continuous service improvement.
    Featured Skill XMPP
    Session Initiation Protocol
    MongoDB
    MariaDB
    Jira
    ELK Stack
    Wireshark
    OpenSIPS
    VoIP
    FreeSWITCH
    Computing & Networking
    DevOps
    CentOS
    Debian
    Linux
  • $20 hourly
    • 5.0/5
    • (12 jobs)
    ------ Your One-Stop Shop for Web & Mobile App Development ------ Tired of juggling multiple developers for your projects? I'm a Experienced Senior Full Stack Developer with over 7 years of experience, bringing the full spectrum of skills to life - from flawless design to powerful backends. Here's what sets me apart: Full Stack Expertise: I speak both frontend and backend languages fluently - React, Vue, Angular, Node, PHP, Python - you name it! Cross-Platform Mobile Magic: Build sleek mobile apps for iOS & Android using cutting-edge React Native technology. Cloud Powerhouse: Leverage the muscle of AWS, Azure, or GCP to build scalable and secure applications. **My LLM/Retrieval-Augmented Generation (RAG) expertise includes**: - Designing and implementing scalable RAG systems - Structuring data for optimal retrieval and generation - Fine-tuning Large Language Models (LLMs) to meet specific needs - Addressing hallucinations in LLMs using LlamaIndex and cutting-edge methods Computer Vision Solutions: - Object Detection - Tracking - Face Recognition - People Counting 🔧 Core Technologies - LangChain - LlamaIndex - PyTorch - YOLO - OpenCV Third-Party Integration Ninja: Seamlessly connect your app to SSOs, payment gateways, and more. Native App Mastery: Looking for a truly native iOS experience? I'm an expert in Swift and Objective-C. But that's not all! I bring a wealth of experience in: React.js: 6+ years of building dynamic web apps with React, Redux, GraphQL, and a mastery of UI libraries. UI/UX Design: Craft user experiences that are intuitive and visually stunning. Agile Project Management: Deliver projects efficiently using sprints, continuous deployment, and clear communication. Ready to turn your vision into reality? Let's chat about your project and how I can help you achieve success! P.S. I'm a team player at heart, happy to collaborate or lead your local/remote team to achieve your goals.
    Featured Skill XMPP
    Game Development
    Vue.js
    Bootstrap
    Web Service
    API Development
    Kotlin
    React
    Angular
    React Native
    Flutter
    iOS Development
    Unity
    Swift
    Objective-C
    Twilio API
    Java
  • $30 hourly
    • 4.9/5
    • (62 jobs)
    I am here with 13+ years of high experience specialized in creating applications from scratch and improvising the existing applications placing my feet parallel to present-era technologies. Innovation and hard work are my forte. I work to craft the best Android, iOS and Web applications for my clients. Web Technologies I am working on: Frontend: NextJS, ReactJS, MUI, AngularJS, VueJS, Typescript, Javascript, Bootstrap, HTML, CSS. Backend: NodeJS, Laravel, PHP. Databases: MySQL, MongoDB, Redis, Firestore Payment Gateways: Stripe, Paypal, Braintree I also have expertise in developing Cutting Edge WebRTC Video Conferencing for Web and Mobile Apps. WebRTC Technologies I have expertise in: - MediaSoup - Jitsi - XMPP - Twilio - Ejabberd - Erlang 3rd party APIs integration I have done includes: - Firebase - Facebook API - Foodics API - KVK (Chamber of Commerce) - Flight tracking API - Google APIs. - Adobe API
    Featured Skill XMPP
    Session Initiation Protocol
    Erlang
    WebRTC
    Objective-C
    Swift
    Android
    iOS Development
  • $20 hourly
    • 5.0/5
    • (15 jobs)
    I have been working as an iOS developer for the last 6 years. I develop apps for iPhone, iPad and iWatch devices and also design different user interface for different devices for the same project so user can take benefit of his/her device. I develop many apps. I also lead android developers and web developers so client can get the full solution from me for their business and ideas. I offer XMPP app development, mobile ERP solution, social media integration, analytics reports integration, custom API integration, website creation. I work on Swift, Objective-C, Android, XMPP, Openfire, Sqlite, PHP (codeigniter/laravel framework), Node.JS. I have good knowledge in XMPP framework & Opefire server. I have developed chat application using XMPP framework & Opefire server which work similar to Whatsapp And also integrated custom Opefire server API into app as per client needs. This app send & receive simple messages, files, photos, audios, videos, broadcast messages, etc. I visited South Korea in September 2016 for DIYGame company. I worked there two months and I completed two project successfully during this period, one for TV news channel and second app is used to create business card. I made one iWatch application for golf players and this project is also for Korean company. Using this app, player can monitor there swing, his/her speed, etc. I am self motivated, enthusiastic, self-learner so I can convert any idea & business model into good application as well.
    Featured Skill XMPP
    SQLite Programming
    iOS Development
    Android App Development
    Review or Feedback Collection
    Payment Functionality
    AngularJS
    PHP
    Node.js
    Flutter
    Ionic Framework
  • $18 hourly
    • 0.0/5
    • (0 jobs)
    Looking for the projects in VoIP/Chat/Networking of any size - I believe that my 20+ years background in telecom IT & networking will contribute significantly to your project. Have 7+ years experience in system architecture design, implementing and running scalable and fault tolerant carrier grade VoIP systems. Preferred open source components in a core: FreeSwitch, Kamailio, PostgreSQL, Redis, Linphone, QuickBlox, Socket Programming, various WebRTC libs and distributed messaging/queuing systems. Have experience (can read, write code and troubleshoot) in Lua, Python, PHP and JS for scripting, C/C++, stored procedures in SQL. Possess MS degree in applied math, and have deep understanding of data structures, algorithms and complexity. Advanced knowledge of statistics and probability theory. Have designed and implemented scalable VoIP systems for carrier telecoms and retail service providers, featuring advanced real time billing and monitoring systems. Consulted call centers on implementing predictive dialers: choosing right algorithms and strategies to get optimal load for system/network and optimal call distribution to operators. Have experience in designing and implementing various REST API based services for both small and large businesses - two factor authentication systems, high volume voice app systems, conferencing solutions
    Featured Skill XMPP
    QuickBlox
    Asterisk
    VoIP Administration
    FreeSWITCH
    Socket Programming
    VoIP Software
    Chatbot Development
    Mobile App Development
    WebRTC
  • $12 hourly
    • 4.8/5
    • (4 jobs)
    If you have a great idea that would help generate recursive revenue for you, I am here to be the successor of your idea to build an iOS application for you. I have 7+ years of experience in iOS app development, creating native apps, bug fixing existing apps, and collaborating on major projects. I have a strong and excellent knowledge of mobile technology. I am a dedicated, reliable full-time freelance developer and write good quality, clean, and robust code that is low maintenance and update ready. Contact me for any iOS projects or problems you need help with. CONCERNING ME I am interested in taking on long-term or short-term projects. I am keen to build long-term relationships with a few good clients. My areas of expertise include: 👉 Native iOS development 👉 Troubleshooting code 👉 Bug fixing 👉 Deploy to App Store I have TECHNICAL EXPERTISE in the following areas: ✅ XMPP Protocol ✅ Swift ✅ SwiftUI ✅ Web Service Integration. ✅ CoreAnimation. ✅ CoreGraphics. ✅ Auto Layout for all screen sizes. ✅ Core Data/Realm for local storage. ✅ Firebase Real-time database/Cloud Firestore. ✅ Push Notifications/Local Notifications. ✅ Custom User Interface. ✅ Social Media Integration (Google, Facebook, Twitter, LinkedIn, etc.) ✅ WebKit ✅ MapKit/Google Map. ✅ ChatBot(Api.ai) ✅ Augmented Reality (ARKit) ✅ Machine Learning (CoreML) ✅ Quickblox ✅ WatchKit ✅ Bubble.io I have some Backend experience but it is quite limited as I prefer to focus my energy on iOS apps: ✔️ Firebase ✔️ MySQL ✔️ PHP ✔️ Back4App ✔️ Realm ✔️ SQLite ✔️ Google Cloud Platform ✔️ CoreData Thank You
    Featured Skill XMPP
    Artificial Intelligence
    iPad App Development
    Apple Xcode
    Mobile App Testing
    iOS Development
    In-App Purchases
    Objective-C
    Dart
    Flutter
    iOS
    Firebase
    GraphQL
    Swift
  • $25 hourly
    • 0.0/5
    • (2 jobs)
    Easy communication, Fast speed, High quality, High credit, High delivery! This is my important target. If you select me as a contractor, I will reply with good quality and rapid turnaround. I will provide service to your satisfaction. You won't be disappointed. I am sure. I am a mobile developer for 7+ years. I love to do mobile apps. A wide range of iOS Apps developed for different verticals like Food Ordering, Fitness, Legal, Business Automation, Social, Transportation etc. Technology experience includes - iOS/Cocoa/iPad/iPhone/Apple Watch/Fitness Bands. Have deep knowledge and experience in the following areas: - Restful JSON-based Web Service - In-App Purchases - Social Network - Facebook, Twitter - Google API - Facebook API - Parse API - Audio Streaming, Video Streaming - Creating and developing modules as GPS - Push Notification - Multi-Language support, - Automatic Database Sync. - Google Map Service, - Apple Map Service, - Geo Location - - CoreData, CoreGraphics, Animation,SQLite. - XMPP and Web socket
    Featured Skill XMPP
    iOS Development
    Google Ads
    Dart
    Swift
    Push Notifications
    React Native
    Flutter
    Payment Gateway Integration
    Objective-C
    Social Media Account Integration
    Chat & Messaging Software
    Hybrid App Development
    API Integration
  • $16 hourly
    • 5.0/5
    • (16 jobs)
    Hi, I am Dharmendra, a Verified and Top Rated iPhone App(s) Developer on Upwork (600+ working hours logged on UpWork in the last 6+ months) with more than 5 years of overall experience. Working at "Wegile" is like being a member of a winning team where innovation is “meaning of life”, motive is “progress through learning” and "there is always a better way of doing things" is the common belief. I'm an expert in developing iOS, WatchOS and TVOs based mobile apps with more than 5 years of experience in Objective-C, Swift, and C/C++, as well as implementing web services, architecture design and enterprise mobile environments. Expertise: • Native mobile app development for iPhone & iPad - iOS, Apple Watch - WatchOS, Apple TV - TVOs • Mobile Backend development (Parse, AWS API Gateway, Google App Engine, REST Web Service API, XML/JSON) • WatchKit, Xcode 7, UIStoryboard, AutoLayout • Development languages: Swift 2.x and 3.x, Objective-C, C/C++, AngularJS, NodeJS, JavaScript, Ionic, Cardova, HTML5 • Database: MySQL, SQLite, PostgreSQL, MongoDB, Core Data, AWS Dynmo DB • Social network integration: Facebook, Twitter, Foursquare, LinkedIn, Google+, Instagram • Chatting protocol: XMPP, Open Fire, AMQP, MQTT • Geolocation services: GPS, Google Maps, Yandex Maps, OpenStreetMap • Payment services: PayPal, In-App Purchase, Stripe • Misfit API, FitBit API, Expedia API, other 3rd Party BLE 4.X device integration API's • Version control: Git, Subversion • Analytics services: Flurry, Google Analytics, Mixpanel, Localytics • Distributing services: TestFlight, HockeyApp, Crashlytics • Design Tools: Adobe Photoshop, Sketch • UIKit framework, Core Graphics for customized UI components • Core Data, iCloud integration for data storage • AV Foundation, Core image • iAd, In-App purchase • Offline Map using route-me library If you have any questions, please send me a contact request on UpWork and I'd be happy to collaborate with you on your next project. Thanks, Dharmendra
    Featured Skill XMPP
    API Development
    Spring AMQP
    Payment Gateway Integration
    Apple Xcode
    iOS Development
    Swift
    tvOS
    Objective-C
    Ionic Framework
  • $8 hourly
    • 0.0/5
    • (0 jobs)
    I have over 2+ years of experience in iOS Application Development. **Core Expertise and Skills** FrontEnd Language- Objective C, Swift UI Designing - Storyboard, Segues Framework - UIKit, Firebase, Cocoa Touch, Core Data Web Services - Web Services (REST and SOAP) Parsing - JSON Parsing, XML Parsing Database - SQLite Database, Mysql API Integration - Google Maps, Apple Maps, XMPP IDE - Xcode Library - Socket.io, Alamofire Webhosting Server - Git, Bitbucket, Svn Dedication, the Constant learner is what defines me.
    Featured Skill XMPP
    Socket Programming
    Cocoa Touch
    Apple Xcode
    iOS Development
    Objective-C
    Firebase
    Swift
  • $17 hourly
    • 0.0/5
    • (0 jobs)
    Senior Flutter Developer | Android | Team Lead | 10+ Years of Experience Hi! I’m Alpa Mori, a passionate and results-driven Mobile App Developer with over a decade of experience building high-performance, scalable, and visually stunning mobile applications. I specialize in Flutter and Android Native development, and I’ve successfully led cross-functional teams to deliver end-to-end solutions for both startups and enterprises. 🔹 What I Offer: Cross-platform mobile apps with Flutter Native Android app development (Java/Kotlin) Firebase integration (Auth, Firestore, FCM, Crashlytics) RESTful API and GraphQL integration UI/UX implementation as per modern design systems App Store & Play Store deployment Team leadership, code reviews, architecture design, and Agile delivery 👨‍💻 Leadership & Project Ownership: As a Team Lead, I’ve managed developers, handled full project lifecycles, and ensured timely delivery while maintaining top-notch code quality and app performance. I’ve worked with early-stage startups, taking projects from idea to launch, helping them scale through reliable and efficient mobile solutions. 🏆 Why Work With Me? 100% client satisfaction & long-term partnerships Clean, maintainable, and scalable code Excellent communication & timely updates Strong problem-solving and debugging skills Always learning and evolving with the latest in mobile development Let’s build something amazing together! I'm open to both short-term and long-term opportunities. Feel free to invite me to your project — I’d love to hear more about your vision.
    Featured Skill XMPP
    Lua
    App Store
    In-App Subscription
    Health & Fitness
    MetaMask
    Websockets
    Firebase
    iOS Development
    Android App Development
    Flutter
    Product Development
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    Accomplished Android and AI Agent developer with 11 years of experience focusing on Clean Architecture, SOLID Principles, and Test-Driven Development. Proven track record of delivering high-quality mobile apps and successfully leading development teams. Proficient in Java, Kotlin, Jetpack Libraries, MVVM/MVI, Coroutines, Android SDK, and a wide range of Android libraries and tools.
    Featured Skill XMPP
    App Development
    Smartphone
    Room
    XML
    JetPack
    Kotlin
    Java
    Mobile App
    iOS Development
    Android App Development
    Artificial Intelligence
  • $30 hourly
    • 4.3/5
    • (33 jobs)
    I am working In VoIP , Android and iOS since last 12+ year. I have provided wide range of Technical solutions in VoIP, WebRTC, Website and Mobile Application development areas to startups , mid level and enterprise companies. I have expertise with VoIP mobile development, Android/iOS application development, Flutter Development, ReactNative Development and Web application developments with specialty in developing Asterisk, FreeSWITCH, OpenSIPs, Kamailio, OpenSER, VoIP/SIP, ASTPP, WebRTS and Mobile VoIP based solutions. I have worked on 25+ Linphone, PJSip and WebRTC Based Mobile VoIP Diallers with 100% Client satisfaction. I can also provide customized Class-4 and Class-5 Softswitch for your VoIP business. Please refer below services I can provide. - Linphone Mobile VoIP Dialler development - PJSIP Mobile VoIP Dialler development - Asterisk Server Installation, development , customization and maintenance. - FreeSwitch Server Installation, development , customization and maintenance. - Kamailio and OpenSips Server Installation, development , customization and maintenance. - Android Application development - iOS Application development - Web Application Development - RectJS and ReactNative Web and Mobile Application development. - Testing and bug fixing in existing applications. - Consulting for ongoing projects. - Can provide consulting for projects related to Android, iOS, ReactJS, Asterisk , FreeSwitch , Opensips, Kamailio, ASTPP, RTPengine, MediaProxy, RTPproxy, FreePBX and A2Billing. - Expert in developing Flutter WebRTC Applications. - Expert in developing ReactNative WebRTC Applications. ✅ Mobile Softphone development - Linphone, PJSIP, WebRTC, Any Proprietor SIP SDK integration, Agora Integration, LiveKit Integration, Custom WebRTC Development ✅ VoIP - Freeswitch, Asterisk, FreePBX, FusionPBX, Kamailio, Opensips, ASTPP ✅ React - ReactJS, NextJS, ReactNative, Mobex, Axios, MaterialUI, React-Bootstrap, TailWindCss ✅ NodeJS - NodeJS, NestJS, Middleware, Typescript, Javascript, AWS Deployment, CI/CD Deployment ✅ Mobile Application - Flutter, ReactNative, Android Kotlin, Android, Swift, Objective-C, SwiftUI ✅ HTML, JS, CSS, Bootstrap, Vanila Script, Jquery ✅ WebRTC Server Customization : Livekit, Mediasoup, Janus, Agora, libwebrtc You can message to discuss your requirements in detail.
    Featured Skill XMPP
    Flutter
    Swift
    Android App Development
    iOS Development
    Mobile App Development
    React Native
    React
    Node.js
    Kamailio
    Asterisk
    FreeSWITCH
    WebRTC
    VoIP
    VoIP Software
  • $17 hourly
    • 0.0/5
    • (0 jobs)
    Hi, I'm Mayur, a skilled App developer with over 12 years of experience. I've created and published more than 80 high-quality apps, working with clients from around the world. I pride myself on delivering top-notch service and 100% support. I'm proficient in mobile app development, with a deep understanding of both iOS and Android platforms, as well as cross-platform (hybrid) frameworks like Flutter and React Native. Let's collaborate to bring your app ideas to life! Technologies I have worked with: iOS:- Swift, Objective-C, SwiftUI Android:- Java and Kotlin, JetCompose, Android TV and Wearables Cross-Platform / Hybrid:- Flutter, React Native, Compose Multiplatform Web Development:- Angular, Node JS, PHP, Codeigniter, Laravel, API Development My expertise span: - Proficient in Swift, Objective-C, Java, Kotlin and Cross-Platform development frameworks - Strong understanding of mobile UI/UX design principles and best practices - REST APIs, Soap XML, JSON, and Web Services Integration - In App Purchase and Subscription, Android and Apple Pay - Payment Integration: PayPal, Stripe, Razorpay - Chat integration with Firebase Messaging, XMPP and EJabberd - Social media integration and authentication - Push notifications and Advertisement - Geo Location & Proximity based app: Maps, Geo-Fencing & Beacons - Expertise in GitHub, BitBucket and SVN - Project Management Tools: JIRA, Jenkins, Basecamp, Mantis. and more.
    Featured Skill XMPP
    Twitter/X API
    Live Chat Software
    API Development
    Facebook Development
    PayPal Development
    In-App Purchases
    Push Notifications
    Firebase Cloud Firestore
    Firebase Realtime Database
    Payment Gateway Integration
    Hybrid App Development
    Kotlin
    Swift
    Flutter
    iOS Development
    Mobile App Development
    Android App Development
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    I am an Android App Developer with experience in building high quality android applications. I have made android applications for a few startups plus I keep on creating more. I like creating cool stuff that can help people and make their lives easier. I believe that almost every problem can be solved with the help of technology.I like working in a community where there can be exchange of ideas and everyone gets to learn. I look forward to hearing from you!
    Featured Skill XMPP
    Apps Script API
    Git
    Android SDK
    GitHub
    Android App Development
    Android
    Java
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