Senior Software Engineer and Technical Lead with 13+ years of experience Specialized in C#, ASP.NET Core, .NET 8, Angular 10+, and enterprise application development Web Applications and Mobile Apps & Kiosks Experienced in designing scalable, secure, and high-performance software solutions Strong expertise in Azure, REST APIs, database architecture, and workflow automation Proven ability to lead end-to-end product development from concept to deployment Skilled at translating business requirements into effective technical solutions Experienced in building multi-platform and multi-tenant enterprise systems Strong leadership in bridging communication between business and engineering teams Proficient in Agile methodologies, CI/CD pipelines, and modern DevOps practices Focused on delivering reliable, maintainable, and high-quality solutions on time Capable of helping businesses transform ideas into successful software products Recent Work ERP system for service based industry which has booking, purchase different services across different branches.

Hi! I'm Satyam Rai, a results-driven React Native Mobile App Developer dedicated to building high-performance, cross-platform iOS and Android applications. With 20+ successful projects delivered, I specialize in translating complex client requirements and Figma designs into clean, scalable, and responsive code. Core Expertise Frameworks & Languages: React Native, JavaScript (ES6+), TypeScript, React.js State Management: Redux, Redux Toolkit, Context API Payment Gateways: Razorpay, Stripe, DECTA, CCAvenue, PayFast APIs & Real-Time Features: RESTful APIs, Google Maps API, Firebase, Audio/Video/Chat, Live GPS Tracking, Push Notifications UI/UX & Tooling: Android Studio, Xcode, Responsive Layouts, Performance Optimization Key Projects & Highlights My Rides (Ride-Hailing Dual Apps): Built front-end UIs for passenger and driver apps serving 50K+ users and 10K+ drivers in South Africa, integrated with PayFast & Google Maps APIs. Trustified (Lab Verification & Affiliate App): Developed an e-commerce & lab testing platform featuring blind testing reports, affiliate integration, and product verification workflows. Coral Leisure (Facility Booking Platform): Integrated secure payment gateways (Stripe/DECTA), real-time class booking systems, and QR code access control across 9+ venues. Astromoon & Agro Apps: Created interactive consultation platforms with real-time audio/video calls, domestic payment gateways (Razorpay/CCAvenue), and localized smart agriculture interfaces. Why Work With Me? Proven Track Record: 20+ projects completed across diverse industries (Ride-Hailing, Health/E-commerce, Leisure, AgriTech). Payment Integration Master: Deep hands-on experience integrating regional and global payment providers securely. Performance Focus: Clean code optimized for smooth 60 FPS performance and rapid load times. End-to-End Ownership: Dedicated to delivering top-tier quality from initial setup to store publishing. Let’s connect and discuss how I can help bring your mobile app vision to life!

I specialize in iOS development and programming mentorship, providing a solid foundation for aspiring developers. With experience as an iOS Developer at a renowned academy, I have honed my skills in creating engaging applications and guiding others through the learning process. My goal is to empower clients by delivering high-quality development solutions while fostering a collaborative learning environment. Whether you're looking to build your next innovative app or need guidance in iOS programming, I bring both technical expertise and mentorship experience to the table. Let's connect and discuss how we can bring your project to life or elevate your programming skills to the next level.

Kreativer App-Entwickler mit Multitalent-Profil: Programmiere Apps, gestalte Logos und löse vielseitige digitale Herausforderungen mit Expertise und Leidenschaft.

I’m a full-stack developer who builds production applications across web, iOS, desktop, and backend systems. I currently lead product and development work on QuickFlight, an aviation platform that delivers real-time aircraft tracking, flight planning, weather briefings, and EFB tools. This work involves native iOS development, web interfaces, backend services, APIs, and real-time data systems. My experience includes: • Native iOS apps (Swift & SwiftUI) from design through App Store release • Web applications and interfaces • Backend services and API development • Desktop tools and internal systems • Real-time data integration and production deployments I prefer projects where I can own meaningful parts of the stack and deliver clean, maintainable code that actually ships. Whether you need a new application built, an existing system improved, or help connecting frontend and backend systems, I bring practical experience from real production work. Available for hourly and fixed-price projects. Happy to discuss your requirements.

Principal Unity Engineer with 18 years of professional game development experience delivering mobile, VR, multiplayer, AI-powered and cross-platform products. Career highlights include 20M+ game downloads, principal engineering leadership at Spin Master, shipping features for PAW Patrol, building VR training simulators, multiplayer voxel games, and production AI-powered interactive experiences: • 18 years of professional game development • 13+ years of Unity (C#) • 20M+ mobile game downloads • Principal Engineer at Spin Master • 5+ years VR development • Multiplayer architecture using Photon (PUN, Fusion) • Built AI-powered interactive experience combining LLM-based narrative generation, generative voice synthesis, and automated asset creation pipelines • Mobile / PC / VR / WebGL

Award-winning iOS Developer with 10+ years of experience crafting high-quality mobile applications within the Apple ecosystem. Recognized with the Apple Design Award & App Store Award (2024) for delivering user-centric, innovative apps with exceptional UX/UI design and solid architectures. ### Notable Projects: • Oko – Led a complete redesign of the award-winning app, helping people cross streets over 3M times. • Immoweb – Developed Belgium’s top real estate app with 1M+ downloads, enhancing accessibility and monetization. • WizList – A smart grocery management app with barcode scanning, used by thousands. • Any Recipe – A next-gen digital cookbook app, currently in development. ### Key Expertise & Skills: • Swift & iOS Development – Deep expertise in Swift, SwiftUI, and UIKit, building scalable, high-performance applications for iPhone, iPad, Apple Watch. • Software Architecture – Proficient in VIPER, MVVM, Clean Swift, ensuring robust, maintainable codebases. • UX/UI & Accessibility – Passionate about user experience, implementing i18n, L10n, and a11y best practices. • Agile & CI/CD – Experienced with SCRUM methodologies, Bitrise, Fastlane, Xcode Cloud, and automation testing (XCTest, Nimble). • Apple’s App Store & Distribution – Expertise in App Store submission, Ad-Hoc/Enterprise distribution, and monetization strategies. • Frameworks & Tools – Skilled in CoreData, AVFoundation, WidgetKit, and dependency managers (CocoaPods, SPM). • Analytics & Performance – Integrated Firebase, GoogleTagManager, and A/B testing to optimize apps.

I'm a Senior Full Stack Mobile & Web developer specializing in building scalable, high-performance applications across iOS, Android, web, backend and cloud systems. My core strength is mobile development, but I also deliver complete and end to end solutions including frontend, backend, APIs, databases, cloud infrastructure, CI/CD and production deployment. I work with both native and cross platform technologies, choosing the right architecture based on product needs. Mobile Development (iOS & Android) I build production-grade mobile apps using modern native and cross-platform technologies. iOS (Swift / SwiftUI): Swift, SwiftUI, UIKit, async/await, Combine, Core Data, SwiftData, Core Location, MapKit, AVFoundation, StoreKit, AuthenticationServices, push notifications, deep linking, Keychain and Apple SDK integrations. Android (Kotlin / Jetpack Compose): Kotlin, Jetpack Compose, Coroutines, Flow, Room, DataStore, Hilt, Retrofit, WorkManager, Firebase, Google Maps, Play Billing, push notifications and modern Android architecture. I focus on performance, scalability, offline support, clean architecture and smooth user experiences. Cross-Platform Development I build cross-platform apps using: - Flutter (Dart, Riverpod, Bloc, Firebase, Supabase, platform channels, animations, payments, real-time apps) - React Native (TypeScript, Expo, React Navigation, Reanimated, native modules, Firebase, Supabase, APIs) - Kotlin Multiplatform (shared business logic across iOS & Android) - Compose Multiplatform (shared UI where needed) I select the best approach based on performance, cost and scalability requirements. Web Development I build modern web applications and dashboards using: React, Next.js, TypeScript, JavaScript, Tailwind CSS, REST APIs, GraphQL, authentication systems and real-time interfaces. I develop SaaS platforms, admin dashboards, marketplaces, booking systems and internal tools with strong focus on performance and UX. Backend & APIs I design and build scalable backend systems using: Node.js, NestJS, Express.js, Python (FastAPI, Django), PHP (Laravel), REST APIs, GraphQL, WebSockets, microservices and serverless functions. Databases: PostgreSQL, MySQL, MongoDB, Redis, Firebase, Supabase. I handle authentication, role-based access, caching, file storage, real-time systems and API architecture. Firebase & Supabase I use Firebase and Supabase for fast, scalable backend development: - Firebase: Auth, Firestore, Cloud Functions, Messaging, Analytics, Crashlytics - Supabase: PostgreSQL, Auth, Realtime, Storage, Edge Functions, Row Level Security AI Integration I build AI-powered applications using: OpenAI, Gemini, Claude and on-device AI (Apple Foundation Models, Android Gemini Nano, ML Kit). Use cases include: chatbots, AI assistants, document processing, summarization, search, recommendations and automation workflows. Authentication & Security OAuth2, JWT, Sign in with Apple/Google, Firebase Auth, Supabase Auth, passkeys (WebAuthn), biometrics, secure storage (Keychain/Keystore) and role-based access control. Security is implemented across frontend, backend, APIs and databases. Real-Time Systems WebSockets, Firebase, Supabase Realtime, GraphQL subscriptions and event-driven architectures for: chat apps, live dashboards, tracking systems, notifications and collaborative tools. Cloud & DevOps AWS, Google Cloud, Firebase, Supabase, Docker, GitHub Actions, CI/CD pipelines, monitoring, logging and automated deployments. I also manage App Store and Google Play releases, including builds, signing, TestFlight and production deployment. Third-Party Integrations Stripe, PayPal, Apple Pay, Google Pay, RevenueCat, Twilio, SendGrid, Google Maps, Mapbox, analytics tools, CRM systems and custom APIs. What I Can Build - Mobile apps (iOS, Android, Flutter, React Native) - Web apps & SaaS platforms - Backend APIs & microservices - Real-time chat & tracking systems - AI-powered applications - Admin dashboards & internal tools - Cloud-native scalable systems I combine strong mobile expertise with full-stack engineering capability, allowing me to design and deliver complete end-to-end systems, from UI to backend to cloud deployment. My focus is always on clean architecture, performance, scalability and long-term maintainability.

I've worked in every domain of software. Tell me what you're up to and I'll lead us through an effective solution. - Backend specialist for 5 years at S&P and Banqsoft. - Mobile specialist for 7 years with Diversido, Noble Muffins and other clients. - Professional experience with React, TypeScript, C++ and Java. I got my start when I took over IT at a horse trailer dealership to gather money to move to Europe. At S&P, I took our team's first two microservices from zero to production. I later served as scrum master, and was given a technical excellence award for my work in SQL optimization. As a game developer, my Turbo Slicer product has been featured repeatedly by the Unity Asset Store. I wrote a finite element analysis kit for PlayWay S.A. to manage building collapse for the games Construction Machines 2016, Demolish & Build 2017 and Demolish & Build 2018. In my spare time I support new programmers on Codementor.io.

Software developer building both frontend, backend in web and mobile applications in different technologies. 10 years of experience as a freelancer. Full project management from start to end. I practice team leading and product management of big projects and startup consulting.