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I build native iOS and Android applications that work in the real world, in the field, offline, in complex physical environments where most mobile solutions fall apart. My focus is on technically demanding work: augmented reality and spatial computing, LiDAR-based 3D reconstruction and site scanning, RoomPlan-based room and space capture, GIS and GNSS field data collection, BLE and IoT device integration, and AI/ML features that actually ship. Not demos, production systems. I'm the founder of Quality Wolves, a senior-only engineering team. Everyone on the team has owned full project cycles and made architectural decisions. We take ownership of the technical scope, surface what matters, and keep things moving. You stay focused on your product, we handle the build. What I build: Native Mobile: Swift, SwiftUI, Kotlin, full-cycle iOS & Android development, App Store and Google Play delivery AR / Spatial Computing: ARKit, ARCore, RealityKit, RoomPlan, LiDAR scanning, point cloud processing, 3D reconstruction, Apple Vision Pro. GIS & Field Data: GNSS/RTK integration, offline-first architecture, geospatial data pipelines, custom map layers, QGIS compatibility AI & ML: LLM integration, computer vision, NLP, on-device inference with Core ML and TensorFlow Lite, OpenAI and custom model pipelines, TTS/STT Connectivity: BLE pairing flows, LoRa, IoT sensor integration, background sync, beacon tracking Our senior engineers use AI tools deliberately, not as a substitute for judgment, which means faster delivery without trading speed for technical debt. Good fit if you: Need someone who operates independently without hand-holding Are building something with real operational complexity Have been burned by teams that shipped demos and called it done Describe the problem you're trying to solve, send a message, and let's talk specifics.

Software Engineer with solid expertise in front-end development, specializing in React.js, Next.js, and TypeScript. Skilled in building scalable web applications, complex dashboards, and advanced filtering systems using modern frameworks like Refine.dev and Ant Design. Experienced with backend development in Python (FastAPI) and familiar with Node.js, enabling full-stack capabilities. Worked on a wide range of projects, including CRM, HRM, e-commerce, delivery systems, landing pages, and traffic platforms. Passionate about creating efficient user experiences, writing clean and maintainable code, and continuously improving skills in backend development and algorithms.

🏅 𝐁𝐞𝐬𝐭 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐖𝐨𝐫𝐤 💯 𝟏𝟎𝟎% 𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧
 ✅ 𝐐𝐮𝐢𝐜𝐤 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐞 ⏳ 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐨𝐧 𝐘𝐨𝐮𝐫 𝐒𝐜𝐡𝐞𝐝𝐮𝐥𝐞 Hello Clients, Want to create something unique and useful within a limited time period? Connect with me and let's get your idea a life. I am Parminder Pal Singh, a dedicated professional renowned for my knack in understanding client requirements and consistently delivering projects on time. Having successfully completed many projects in past 3+ years, I take pride in maintaining a competitive edge through my expertise in Agile development technologies. 📊 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐒𝐊𝐈𝐋𝐋𝐒 ===================== 🌐 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: HTML5, CSS3, JavaScript, React, Angular,Next.js,Typescript 🧰 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝:Node.js, Express.JS, PHP, Python 🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: SQL (MySQL, PostgreSQL), NoSQL (MongoDB) ☁️ 𝐂𝐥𝐨𝐮𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: AWS, Docker, CI CD Pipeline If you are starting your business in following industries I am your subject matter expert- ✔️ 𝐄-𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 ✔️ 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 ✔️ 𝐅𝐢𝐧𝐭𝐞𝐜𝐡 ✔️ 𝐅𝐨𝐨𝐝 ✔️ 𝐅𝐢𝐭𝐧𝐞𝐬𝐬 ✔️ 𝐓𝐫𝐚𝐯𝐞𝐥 ✔️ 𝐎𝐧 𝐝𝐞𝐦𝐚𝐧𝐝 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧 ✔️ 𝐑𝐞𝐚𝐥 𝐄𝐬𝐭𝐚𝐭𝐞 ✔️ 𝐄𝐝𝐮𝐜𝐚𝐭𝐢𝐨𝐧 Key Stregnths: ***************** • Client-Centric Approach: My ability to delve into and comprehend client needs sets the foundation for successful project outcomes, giving me a distinct advantage in the industry. • Expert in Agile Development: My proficiency in agile methodologies enhances project adaptability, collaboration, and responsiveness to change, ensuring efficient and effective development processes. Quality Assurance Focus: ***************************** In addition to development, I bring a meticulous approach to quality assurance. My expertise lies in creating comprehensive test cases to ensure the delivery of high-quality end products. Why work with me? Because I'm not just a developer—I'm a partner in your success. If you have any questions or if you're interested in discussing potential collaborations, please feel free to get in touch. Let's collaborate and build something extraordinary together!

𝐅𝐑𝐄𝐄 𝟑𝟎-𝐌𝐢𝐧𝐮𝐭𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 𝟔+ 𝐲𝐞𝐚𝐫𝐬 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐛𝐚𝐜𝐤-𝐞𝐧𝐝𝐬 𝐟𝐨𝐫 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐭𝐨 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬 I help tech startups build fault‑tolerant Laravel, Node.js back-end (REST APIs & micro services) so their apps scale without downtime. • I built a crypto web app back-end that handles 10,000+ transactions daily with sub-100ms response time and real-time WebSocket price feeds. • Built a real-time dashboard with WebSockets for a logistics company - tracking 5,000+ deliveries simultaneously. • Scaled a SaaS back-end from 500 to 50,000 users with zero downtime • Automated workflows that reduced manual operations by up to 70% I develop the scalable back-end systems, APIs, and SaaS platforms using Node.js, NestJS, Laravel, PHP, REST API, microservices, databases, and cloud technologies. Tech Stack • Back-end : Node.js (Express), PHP (Laravel) • Database : PostgreSQL, MySQL, MongoDB, Redis • Cloud : AWS, Docker, CI/CD, Linux • APIs : REST, GraphQL, WebSockets, • API & Integration : RESTful APIs, GraphQL, WebSocket & Real-time Applications (Socket .io), Third-party API Integration (Stripe, PayPal, Twilio, Google, Meta, Shopify, Zapier), gRPC, Google APIs, Authentication (JWT, OAuth) • AI & LLM Integration : OpenAI (ChatGPT API), Claude, LangChain, AI Agents, RAG Systems, Prompt Engineering Products I build: • SaaS platforms • CRM systems • Enterprise applications • Admin dashboards • Marketplace platforms • AI-powered applications Industries • SaaS · FinTech/Crypto · Marketplaces · Healthcare · EdTech · Logistics · E-commerce · Real Estate How to start: 1. Having an intro, where we identify your request 2. Our team identifies specific Talent or Team for your request 3. We deeply research your request and outline a collaboration proposal for your specific case 4. Proposal presentation and negotiations 5. Paperwork 6. Collaboration kick off Typical Project Timelines • MVP & New Product Development: 4-12 weeks depending on scope and integrations. • Feature Development & Improvements: 2-10 days for smaller updates, 1-4 weeks for larger modules. • API & Third-Party Integrations: 2-10 days for services like Stripe, Twilio, Shopify, and custom APIs. • Full Stack Web Applications: 6-16 weeks depending on features, architecture, and scalability needs. • Cloud Setup & DevOps: 3-10 days for AWS, deployment, and CI/CD configuration. • UI Development & Design Implementation: 1-4 weeks depending on screens and complexity. • Legacy Code Refactoring & Optimization: 1-6 weeks based on codebase size and improvements required. Whether you need a Full Stack Developer for a new SaaS product or a Backend Developer to improve your existing system, I can help you turn your idea into a production-ready solution. Let's connect!

Senior Flutter engineer who built and scaled a cross-platform app from 0 to 600K+ downloads on iOS and Android. If you're building a mobile app — or scaling one that's already live — you get a developer who's actually done it, not someone learning on your budget. Most developers can build a screen. Far fewer have taken an app from zero to hundreds of thousands of users and kept it fast, stable, and reliable the entire way. That experience means fewer surprises for you: I already know where apps break at scale, so we avoid those problems instead of paying for them later. Apps I've built and scaled: A subscription delivery app (iOS & Android) I built and grew from 0 to 600K+ downloads — flexible subscriptions, in-app wallet, integrated payment gateways, and real-time order tracking. Result: a production app that handles real users and real money, daily. Its delivery-partner logistics app, used by 500+ drivers every day to manage routes, orders, and live status — proof I can build complete, multi-sided systems, not just a single app. Migrated a live healthcare app from native iOS/Android to Flutter with zero downtime — so the business kept running while the tech got better. Built real-time video consultation on Agora SDK for a regulated platform — complex, compliance-sensitive features done right. What this means for you: A new app built from scratch — clean, scalable, and ready for the App Store and Play Store An existing app made faster, more stable, and ready to grow The hard features handled: payments, subscriptions, push notifications, real-time/live tracking A smooth native-to-Flutter migration without disrupting your users One developer who owns the result end to end, so you're not stitching together freelancers How I work: Clear communication, predictable timelines, and updates you don't have to chase. I treat your app like a product I'm invested in — because stable, growing apps are how I've built my reputation. Top Rated, 100% Job Success. If you're serious about building or scaling a mobile app, send me a message with what you're working on. I'll reply with how I'd approach it — no obligation, just a clear plan.

I ship production-ready React Native apps to the App Store and Play Store — not demos that break after launch. 5+ years building cross-platform mobile apps (React Native, Expo, TypeScript) for startups and product teams in the US, UK, and EU — from MVP to live users, payments, and real-time features. Hi, I'm 𝙂𝙝𝙪𝙡𝙖𝙢 𝘿𝙖𝙨𝙩𝙖𝙜𝙞𝙧 — a React Native and Expo developer focused on iOS and Android apps that perform well in production, scale cleanly, and ship on time. What I do best: • React Native (CLI + Expo) — cross-platform iOS and Android development • App Store and Play Store publishing — TestFlight, EAS, production releases • Backend integration — NodeJS, Express, NestJS, REST and GraphQL APIs • Authentication — Firebase, Supabase, JWT, OAuth, Apple and Google Sign-In • Payments — Stripe, RevenueCat, Apple IAP, Google Pay • Real-time features — WebSockets, live updates, push notifications, deep linking • AI integration — OpenAI API, chatbots, smart automation • Performance — optimization, bug fixing, legacy app rescue • Web when needed — NextJS, React, ThreeJS, Tailwind, Supabase Recent projects: • Sol Hour — Real-time interactive DJ platform with 3D avatar and live guest sessions • Fenzro — AI-powered business management mobile app (React Native + Expo) • JUVA OS — Multi-service business mobile app with Expo, EAS builds, and TestFlight deployment • Juice Ordering Platform — Restaurant and F&B ordering app with cart, checkout, and order tracking • Inventory Management App — Stock, sales orders, and invoicing for retail businesses • Dex Remit — International money transfer fintech app with Stripe payments • CrowdCare Aid — Crowdfunding app with donation and payment flows • Compaklink and DiveIn — Social networking and messaging with real-time chat • Movie Streaming App — Custom video player with offline downloads • E-Commerce and Booking Apps — Product catalog, orders, and calendar scheduling Why clients work with me: ✓ 100% Job Success Score ✓ Clear communication — daily updates, fast response (0–4 hours) ✓ Clean, maintainable code your team can extend ✓ I work independently or with your existing dev team ✓ Available 30+ hrs per week — open to contract-to-hire If you need a reliable React Native developer who can take your app from idea to MVP to App Store launch, I would love to help. Message me with your project details and I will reply with a clear plan. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Keywords ━━━━━━━━━━━━━━━━━━━━━━━━━━━ React Native Developer | React Native Expo | iOS Developer | Android Developer | Mobile App Developer | Cross-Platform Developer | TypeScript | JavaScript | NodeJS | Express | MongoDB | Firebase | Supabase | Stripe | RevenueCat | OpenAI API | REST API | GraphQL | ThreeJS | React Three Fiber | NextJS | MVP Developer | Startup App Developer | App Store Deployment | Performance Optimization