✅ 8+ years of experience as an Full Stack Developer. ✅ 3500+ Hours of work history as an Full Stack Developer ✅ Master's degree in Computer Application.   ✅ 100% Client Satisfaction. Hi, I am Mamta Kumari Full Stack Developer. From more than 9+ years of experience in Mobile development, I am a professional Developer who has extensive experience in iPhone, iPad development. My focus is on doing high quality work and client satisfaction. I am finding an individual approach to each new job and do it professionally, quickly, qualitatively, paying attention to even the smallest details. My Skills: ✅iPhone Applications. ✅Android apps using Android Studio  ✅ XML/JSON parsing, soap response and web service  ✅ In app purchase, Paypal, Braintree, Stripe,  CCAvenue payment integration ✅ Fire base Push Notification (FCM) ✅ Chat & Messaging Engine: XMPP, OpenFire, Quickblox, Socket. ✅ Social Media (Facebook, Instagram, Google+, Twitter, Linkedin etc) Integration ✅ Google analytics, Flurry, Fabric, Crashlytics, Image editor SDK, dropbox SDK  ✅ Geo Location, GPS, Google Map API, Apple Map API ✅ Trello, Jira, Slack, Asana project management tool  ✅ Apple/Google play store submission 

Are you looking for a reliable DevOps Engineer who can help you accelerate deployments, reduce downtime, and optimize cloud infrastructure costs? With 6 years of hands-on experience in DevOps, Cloud, and Infrastructure Automation, I specialize in building scalable, secure, and resilient systems that empower businesses to move faster and smarter. What I Do Best * Cloud Infrastructure (GitOps | AWS | GCP | Azure): Designing, deploying, and managing cloud environments with best practices for scalability, security, and cost optimization. * Containerization & Orchestration: Expert in ArgoCD | Docker & Kubernetes (K8s) for microservices architecture, cluster management, and auto-scaling. * CI/CD Automation: Streamlining software delivery pipelines with Flux, Jenkins, GitHub Actions, GitLab CI, CircleCI to ensure faster, reliable releases. * Infrastructure as Code (IaC): Building reproducible and version-controlled infrastructure using Terraform, Ansible, CloudFormation, Helm. * Monitoring & Logging: Implementing proactive monitoring solutions with Prometheus, Grafana, ELK/EFK stack, Datadog, New Relic for real-time insights and stability. * Security & Compliance: Hardening infrastructure, secrets management, and compliance alignment with Vault, IAM, SSL/TLS, CIS Benchmarks. * Automation & Scripting: Efficient process automation with Python, Bash, and Shell scripting. Key Achievements * Reduced cloud infrastructure costs by 30% through smart resource optimization and auto-scaling policies. * Implemented a zero-downtime CI/CD pipeline that accelerated deployments from weekly to multiple times per day. * Migrated a legacy on-premise application to AWS Kubernetes (EKS), improving scalability and resilience. * Designed multi-cloud disaster recovery architecture, ensuring 99.99% availability and business continuity. Why Clients Choose Me * Proven Expertise: I bring a balance of hands-on technical skills and strategic problem-solving. * Client-Focused: I understand business goals and align DevOps solutions to maximize ROI. * End-to-End Ownership: From infrastructure setup to ongoing monitoring and automation, I deliver complete solutions. * Transparent Communication: Clear, proactive, and collaborative throughout the project lifecycle. Whether you need a one-time infrastructure setup, cloud migration, CI/CD pipeline implementation, or long-term DevOps support, I’m here to help you achieve reliable, automated, and scalable systems. Let’s discuss your project and take your DevOps strategy to the next level.

✅ Fluent English ✅ Upwork Top-Rated Developer ✅ 100% client recommendation 𝐀𝐌𝐀𝐙𝐈𝐍𝐆 𝐂𝐋𝐈𝐄𝐍𝐓 𝐓𝐄𝐒𝐓𝐈𝐌𝐎𝐍𝐈𝐀𝐋𝐒: ★★★★★ - Edwin. | React Native App "Good Job! I am very impressed by the service quality, knowledge and professionalism of Bina. I like how she promptly answer my queries and always provide me a feedback about the status of the project. She is very trustworthy ,reliable and satisfactory till the deployment of our app. And, she can provide ideas and recommendations that are effective.I would highly recommend Bina for her valuable services without hesitation and will absolutely hire her again in our second phase of our project. Thanks again Bina!" --------------------------------------------------------------------------------------------- I have 8+ of experience with Mobile app development using Native as well as Hybrid technologies. Native technologies for iOS such as Objective-C, Swift, Xcode Native technologies for Android such as Java, Kotlin, Android Studio, JavaSDK Hybrid technologies such as : React Native and Flutter/Dart I've worked with various third party services such as AWS Server Hosting with load balancer, RDS, EC2 Instance, S3 bucket, Security group, Security Key, SES mail sending service, SNS push notification service, AWS cloudfront, Heroku server,DigitalOcean droplet, EngineYard etc. I am a strong person with excellent motivation skills and a record of delivering projects that are on schedule and within scope requirements. There is one thing which I will never tell you out loud, because I think it just goes without saying - your satisfaction is guaranteed. I've also worked with various payment gateways such as Stripe, Braintree, Paypal, Chargify, Checkout Express. I am also good with Ruby on rails, Angular JS, Node JS and Other JS framework, In-depth knowledge of CSS3, HTML5, jQuery, JS and Ruby based frameworks. I have ability in testing frameworks such as ruby cucumber, Rspec. iOS Engineer with expertise in: : - AWS Mobile Hub, Amazon Web Services - Firebase - CoreData, Core Location, AVFoundation, SQLite. - Parse SDK, Parse Cloud Modules (Images, Mailgun, Stripe, Mandrill, Java Script, Push Notificaqtions) . - MBass. - Enterprise Level Application. - SOAP, REST API - Apple WATCH KIT, Watch OS 2. - Social Networking Integration: Facebook, Twitter integration, Tumblr, Flickr, Instagram, Google plus - XMPP chat, sqlite, coredata - Calendar, Alarm Applications, Push and Local Notifications - Google API for MAP, Calendar ,Google Drive and other cloud services - Payment Gateway Integration, Paypal, Stripe - Live streaming , Audio and Video - Image processing, Photo Filtering and Effect, Custom Camera design and Development. - Image Editing,Image Filtering and Camera I am very fluent in English communication (Oral & Written)

Hello! My name is Hoang, I am a Top Rated Mobile developer with 100% Client Satisfaction on Upwork. My Upwork profile is a testament to my ability to deliver products of excellent quality, punctually and without any hassle. For me, prioritizing client satisfaction is paramount. 🎯Why you should hire me? ✅Best price with hight-quality work ✅Dedicated to the job process ✅Client satisfaction ✅Quick response ✅Alway available for new updates and maintaining/bug fixes. 🎯 Areas of Expertise: ◉ Native Mobile App Development: Swift, Objective-C, Kotlin, Java ◉ Cross-platform with React Native ◉ AI, Chatbot, SDK, Livestreaming, Social networking ◉ API Integration: AWS API Gateway, AWS Lambda, Rest API, JSON, XML, PHP, Node.js, Python ◉ Database: SQLite, MySQL, Parse, MongoDB, AWS DynmoDB, Firebase real-time DB ◉ Social Integration: Facebook, Twitter, Youtube, Instagram, Snapchat, Tinder ◉ Chat Video/Photo/Text: XMPP, Socket, Firebase, Twilio ◉ Payment Gateway: Paypal, Braintree, Stripe, Paywall, RevenueCat, AppHud ◉ In-app Features: In-App Purchase: Advertisement, Push Notifications, GCM, Google Analytics ◉ Version Control Tools: Github, Bitbucket, Gitlab ◉ Google Map, Apple Map kit, Geolocation, GPS, Location Tracking 💌 Please, feel free to send the invitation to your job post or message me. I'm always looking forward to engaging opportunities!

o 17+ years of experience building iOS apps – one of the original App Store developers (July 2008) o 22+ years successfully working with dozens of clients from my REMOTE office, as a telecommuter o 30+ Apps published in the Apple App Store and Enterprise o 25+ years of professional software development experience o 20+ years of experience with networking protocols & methodologies: REST, JSON, HTTP, TCP, UDP o 20+ years of experience with source control systems: Git, SVN, CVS, RCS, VSS, Perforce o Keen ability to distill complex concepts and systems into easily understandable terms o Outstanding analytical and problem-solving skills o Ability to work independently and as part of a team o Exceptional attention to detail, remarkably fast learner, excellent communication skills. o Personable, enthusiastic, conscientious. o Languages: Objective-C, C++, Swift, Java, Kotlin, JavaScript, PHP, Python, Perl, C, C#. o Operating Systems: iOS, watchOS, macOS, Windows, Linux, Unix. o IDEs: Xcode, Android Studio, Visual Studio, Eclipse. o Experience with API architecture design. o Strong understanding of multi-threaded and concurrent applications. o Expert understanding of all aspects of the iOS provisioning workflow. o Experience developing in an agile and test-driven environment. o Experience creating dynamic libraries with CocoaPods. o Experience with third-party libraries, APIs, and SDKs. o Hands-on experience with UIKit, CoreData, CoreGraphics, CoreAnimation, Cocoa design patterns. o Experience with a wide variety of analytics platforms, including Firebase (Google), Flurry (Yahoo), AWS, comScore, Nielsen, Adobe, MOAT (Oracle). o Ability to bring designer’s creations to life, with pixel-perfect implementations. o Experience in video and media-based development projects. o Working knowledge of Android development (Android Studio, Java, Kotlin, XML, Gradle, CircleCI).

Hello and welcome to my profile 🤝 I’m a Senior Mobile App Developer with 9+ years of experience in mobile application development and 7+ years of deep specialization in Flutter, along with strong expertise in Android Native (Java & Kotlin). I help startups, businesses, and enterprises turn ideas into high-performance, scalable, and pixel-perfect mobile applications for Android & iOS. 🏆 Why Choose Me? ✅ Top Rated Freelancer on Upwork ✅ 26+ successful client projects delivered ✅ 34+ Android applications (Java & Kotlin) ✅ 29+ Flutter applications (Android & iOS) ✅ Clean, maintainable & scalable code ✅ Strong UI/UX sense with pixel-perfect design ✅ Excellent communication & long-term support 💬 What Clients Say ⭐⭐⭐⭐⭐ 5.0 Rating “We hired Ashish for a very complex App-Project on Android & iOS. He was highly committed and delivered an excellent experience. Highly recommended.” — Jan H., Co-Founder, Coach2Talk ⭐⭐⭐⭐⭐ 5.0 Rating “Very fast, excellent communication, and delivered exactly what was expected. I will definitely work with him again.” — WayCreon 🧠 Core Expertise 🟢 Flutter Development (7+ Years) ✔ Clean Architecture & Scalable App Structure ✔ State Management: Bloc / Cubit / Provider / GetX ✔ Cross-platform Plugin Development ✔ RESTful APIs, JSON, XML, Backend Integration ✔ Databases: SQLite, Hive, Floor, Moor, Realm, MySQL ✔ Firebase (Auth, Firestore, FCM, Analytics) ✔ Social Login: Google, Facebook, Apple, Twitter, LinkedIn ✔ Chat & Realtime: Firebase, Socket IO, XMPP, AGORA ✔ Google Maps, Apple MapKit, Location Tracking ✔ Audio / Video Streaming & Live Streaming ✔ In-App Purchases, Ads, Push Notifications ✔ Payments: Stripe, Google Pay, Apple Pay, RazorPay, CashFree, CCAvenue ✔ Flutter Web UI & Responsive Design 🟢 Android Native Development (Java & Kotlin) ✔ Java & Kotlin ✔ Architecture: MVC / MVVM ✔ Coroutines, RxJava, RxKotlin ✔ View Binding & Data Binding ✔ Socket IO Integration ✔ Git, GitHub, Bitbucket ✔ Material UI & UX Best Practices 🎯 What You Can Expect ✔ Professional & clean codebase ✔ On-time delivery ✔ Clear communication & regular updates ✔ Long-term maintenance & support ✔ 100% client satisfaction 📩 Let’s build something amazing together. Feel free to reach out to discuss your idea or project requirements!

I am an AWS Certified DevOps Engineer with 10+ years experience in administration of Linux and Windows servers. My skills include the following, but do not end with: - AWS - Linux (CentOS, Ubuntu) and Windows administration - Apache httpd, Nginx, IIS Server configuration & Management, Apache Tomcat - Version control - GitHub, Gitlab, Bitbucket, git, svn - Code analyze - Sonarqube - Code delivery - Maven - Jfrog artifactory, Nexus repository management - CI/CD - Jenkins, Gitlab CI, Spinnaker - Virtualization - Docker, VmWare, HyperV - Orchestration - Kubernetes, Docker Swarm - Monitoring and visualization - Prometheus, Alertmanager, Grafana - Log management - ELK stack - Scripting - Bash, Python - Cloud - AWS EC2 S3, Google Cloud, Google Kubernetes Engine - Configuration management - Ansible - Infrustructure management - Terraform - XMPP - ejabberd (on kubernetes with autoclutering) - Hashicorp Consul My main objective is a process-oriented approach that combines experience and creativity to find the most productive solutions and succeeding results. I am proficient in close collaborations with offshore clients as well. Flexibility and keeping ahead with technologies are my strengths, so I can guarantee the high quality of the work done.

I’m a mobile application developer with 10+ years of hands-on experience building, scaling, and maintaining high-quality iOS and Android applications for both individual founders and established companies. I’ve successfully launched dozens of apps across the App Store and Google Play, supporting projects from early MVP to full production deployment and long-term maintenance. On iOS, I specialize in Swift, SwiftUI, UIKit, Objective-C, and Apple platforms including iPhone, iPad, Apple Watch, and visionOS. For cross-platform needs, I work with React Native (TypeScript / JavaScript) to deliver efficient hybrid solutions. Over the years, I’ve worked across multiple domains including social networking, streaming, education, messaging, business tools, lifestyle apps, and e-commerce. How I can help you ➤ Build your app from idea → MVP → production ➤ Improve, refactor, or modernize existing apps ➤ Fix performance issues, crashes, memory leaks, and stability problems ➤ Integrate Firebase, AWS, REST APIs, real-time sync, and cloud functions ➤ Implement video streaming, camera, and media-heavy features ➤ Integrate CoreML / ML models and real-time processing ➤ Navigate App Store & Play Store guidelines, submissions, and rejections ➤ Perform code reviews, architecture planning, and technical consulting ➤ Rescue stalled projects and get them over the finish line Technical Expertise ➤ iOS: SwiftUI, Swift 5+, UIKit, Objective-C, CoreData, CoreLocation, AVFoundation, PhotosUI, WebKit, SQLite ➤ Android / Hybrid: React Native, TypeScript, JavaScript, Redux, Redux-Saga, Hooks, Material UI ➤ Backend & Cloud: Firebase (Auth, Firestore, Realtime DB, Cloud Functions), REST & SOAP APIs ➤ Media & Realtime: Video streaming, camera pipelines, Socket.IO, XMPP, chat systems ➤ Payments & Monetization: In-App Purchases, Apple Pay, Stripe, PayPal, Braintree ➤ Notifications: Push notifications, Notification & Share Extensions ➤ Dev Workflow: Git/GitHub, CI/CD, performance optimization, scalable architectures I’ve maintained 100% client satisfaction and long-term relationships by genuinely caring about product quality, timelines, budgets, and communication. Many of my clients have worked with me for years because I treat their product like my own. I’m looking for long-term collaborations, challenging projects, and work that involves R&D, performance optimization, and complex problem-solving. If you need a reliable senior developer who delivers clean, production-ready code and communicates clearly-you’re in the right place.

Customer satisfaction is what drives sales. When you hire me, you are hiring someone who understands how important it is for your clients to have a product they love, a product that runs smoothly and makes their lives easier. I always have the end user in mind, making all these tiny design and coding decisions needed to contribute to an overall great customer experience. I am reliable and passionate Mobile Applications Developer with 8 years in software development. I pay great attention to details, delivering clean and maintainable code on time. My skills: ‣ iOS Mobile Apps development: Swift 3, Swift4, Swift5, Firebase, UIKit/Cocoa Touch, Foundation, Alamofire/AFNetworking, In-App purchases/StroreKit, SpriteKit, CoreData, AFNetworking, CoreGraphics, MapKit, Accelerate, KeychainAccess, SwiftValidator, NSHash, AdSupport, AppsFlyer, GoogleConversionTracking, CocoaPods ‣ Android: JSON / XML, Java, Animation, Creating and Consuming Web-Services / APIS, Google Maps API, Facebook API, Admob Ads Integration, In-App Purchase Integration, Databases(SQLITE, MySQL, SQL, CoreData), Push Notifications, FireBase, KIDS Educational apps ‣ Flutter: Dart Programming language, Widgets, Animation, Material Design and Theming, Creating and Consuming Web-Services / APIS, Google Maps API, Facebook API, Admob Ads Integration, In-App Purchase Integration, Databases(SQLITE, Cloud Firestore), Push Notifications, Firebase ‣ Databases: MySQL, SQLite, MongoDB, Oracle ‣ Cloud server: Parse, Firebase, AWS, iCloud, Dropbox ‣ Third party frameworks: Facebook, Twitter, LinkedIN, Instagram, Youtube ‣ Geolocation & google map/ GPS tracking, Google API, MapKit ‣ Online Payment: In-App Purchase, PayPal, Apple Pay, Stripe, Braintree ‣ Chat & Messaging Engine: OpenFire, XMPP, Jabber, Socket.io ‣ Repository & Task management: Github, bitbucket, JIRA, Slack, Trello, PivotalTracker Good knowledge in code optimization, reducing code redundancies and write clear and loosely coupled code. Always work independently, polished leadership skills, with ability to motivate colleagues to increase productivity.

I am a professional Android App Developer based in the Philippines with 9 years of experience in Android app development. I can do full stack development on both Android mobile apps and API / Backend services. Programming Languages: Android - Kotlin, Java API / Backend Service - Node.js -------------------------------------------- Android Frameworks / Tools: Android Jetpack MVVM-LiveData-Databinding MVP-RxJava-Dagger2 Repository Coroutines RxJava, RxAndroid Dagger2 Retrofit, OkHttp Room SQLite, SQLBrite, Realm Repository ButterKnife Picasso, Lottie, Glide JUnit, Espresso Features Developed: VOIP (voice), XMPP (chat), VPN, REST APIs, Social Network Integration (Facebook, Twitter, Instagram, etc), Payments Services (Paypa1, Paymaya), Analytics (Fabric, Flurry), Database, Maps, Location Services, Geocoding, Firebase, Loyalty Reward Integration, Augmented Reality -------------------------------------------- API / Backend Services Frameworks / Tools: sails.js, express.js MongoDB, MySQL Amazon Web Services Features Developed: Parking Reservation App, Taxi/Cab Booking App, Payment, Location Integration, Social Network Integration, Loyalty Rewards Integration