🏆 10+ Successful Projects | 100% 5-Star Reviews | $50K+ Earned | 35+ Apps Shipped 🏆 🤝 WHAT YOU GET ✅ Senior engineer with 8+ years of mobile & full-stack experience ✅ Every single completed project rated 5 stars by clients ✅ Custom UI/UX design by a professional designer (my wife) ✅ Free basic design support on every project ✅ 2 months of free post-launch support ✅ Unlimited revisions until you're satisfied ✅ Free consultation call before we start Industries I've delivered for: Healthcare, Fitness, E-commerce, Education, FinTech, Real Estate, Food Delivery, Travel, Social Media, SaaS, Lifestyle, News, and more. You need a developer who can build both your web platform AND your mobile app — without juggling separate teams, miscommunication, or doubled costs. I've delivered 35+ production-ready projects across iOS, Android, and web, and I handle the full stack so nothing falls through the cracks. I'm Mert, a senior full-stack engineer with 8+ years of experience. I work alongside my wife, a professional UI/UX designer, so you get world-class design AND rock-solid code from one team — faster turnaround, zero finger-pointing. 🚀 WHAT MAKES US DIFFERENT → Web + Mobile, One Team: Need a Next.js web app AND a React Native mobile app sharing the same backend? I architect and build the entire ecosystem. → Design + Development Under One Roof: My wife handles UI/UX design while I build the product — seamless collaboration from day one. → End-to-End Ownership: From wireframes to deployment and post-launch support, I own every step across all platforms. → Agile Sprints with Full Transparency: Weekly demos, daily updates when needed, and a shared project board so you always know where things stand. 💼 PROJECTS I EXCEL AT Full-stack web applications (Next.js, React, Node.js) Cross-platform mobile apps (React Native/Expo) Native iOS apps (Swift/SwiftUI) AI-powered web & mobile applications SaaS platforms with subscription billing MVP development for startups racing toward funding Admin dashboards & internal tools E-commerce, healthcare, fitness, fintech, education & lifestyle platforms API design, integration & migration projects ⚙️ TECHNICAL EXPERTISE 📱 Mobile Development: React Native, Expo, Swift, SwiftUI, Objective-C, Kotlin, Jetpack Compose, Xcode, Android Studio, App Clips, Widgets, WatchOS 🌐 Frontend & Web: Next.js, React, TypeScript, JavaScript, Tailwind CSS, HTML/CSS, Vue.js, Angular, Progressive Web Apps (PWA), Responsive Design, Server-Side Rendering (SSR), Static Site Generation (SSG) 🛠️ Backend & API: Node.js, Express.js, Python, PHP, Laravel, REST APIs, GraphQL, WebSockets, serverless functions, microservices architecture 🗄️ Database & Storage: Firebase (Auth, Firestore, Functions, Storage, Analytics), Supabase (Auth, Realtime, Edge Functions, Storage), PostgreSQL, MongoDB, MySQL, Redis, Prisma ORM 🤖 AI & Machine Learning: I've shipped production AI apps used by thousands — AI meal scanners, wardrobe stylists, child speech recognition systems, and more. I build AI that earns real revenue. → OpenAI, Claude & Gemini multi-model architectures → RAG pipelines & vector search (Pinecone, pgvector) → Voice AI: Speech-to-Text → LLM → Text-to-Speech → AI image analysis, OCR & document parsing → Personalized recommendation engines → Subscription-gated AI features & usage-based billing → Real-time AI streaming responses (SSE) → AI chatbots with memory & context management → Automated content generation pipelines → AI-powered search & semantic similarity → Fine-tuned model integration & prompt engineering → Multi-language AI (11+ languages shipped) → On-device ML (CoreML, MLKit, TensorFlow Lite) 💰 Monetization & Payments: RevenueCat (subscriptions & paywalls), StoreKit 2, In-App Purchases, Stripe (payments, subscriptions, Connect), Apple Pay, Google Pay, payment gateway integration 🔔 Engagement & Growth: Push notifications (FCM, APNs), deep linking, App Store Optimization (ASO), Apple Search Ads, SEO, analytics (Mixpanel, Firebase Analytics, Amplitude, Google Analytics), A/B testing, onboarding flows 🔐 Security & Auth: OAuth 2.0, SSO, biometric authentication (Face ID, Touch ID), JWT, secure data storage (Keychain, encrypted preferences), role-based access control, CORS, rate limiting, input sanitization 🧪 Testing & DevOps: XCUITest, Jest, Detox, Cypress, unit & integration testing, CI/CD (GitHub Actions, Jenkins, Fastlane, Vercel), TestFlight, CodePush (OTA updates), Docker, crash reporting (Sentry, Crashlytics) 📍 Location & Real-Time: Geofencing, MapKit, Google Maps SDK, location-based services, real-time chat & messaging, WebSocket connections, live data sync 🔗 Third-Party Integrations: Social media login & sharing, Twilio (SMS/voice), SendGrid, Cloudinary, AWS (S3, Lambda, Amplify, EC2), Google Cloud, Vercel, Netlify, REST/GraphQL API design & consumption Ready to build something great? Send me a message — let's talk about your project.

I’m a Top-Rated Senior Full Stack Developer with 13+ years of experience building scalable web and mobile applications for startups, agencies, and enterprise clients. I specialize in delivering high-performance, user-focused solutions across both front-end and back-end development, with a strong focus on clean architecture, scalability, and long-term maintainability. ✅ Top Rated Plus – Expert-Vetted Top 1%
 ✅ 13+ Years of Professional Experience
 ✅ Full Stack Web & Mobile Application Development
 ✅ Strong Experience with Startups, SaaS Platforms & Enterprise Solutions Technical Expertise: Mobile:
Flutter, React Native, Swift, Java CMS & E-Commerce:
WordPress, Shopify, WooCommerce, HubSpot, Drupal Frontend:
React, Angular, Vue.js, Next.js, HTML5, CSS3, Tailwind CSS, Bootstrap Backend:
Node.js, Express.js, Django, Python, Laravel, .NET Databases:
PostgreSQL, MySQL, MongoDB, Firebase DevOps & Cloud:
Git, Docker, CI/CD, AWS, Azure, Nginx I have extensive experience leading projects from concept to deployment, building robust APIs, custom platforms, mobile applications, and scalable cloud-based systems while ensuring high code quality and seamless user experiences.

Built an app in Base44, Lovable, Replit or another AI builder and stuck at the App Store? I can get it approved, end to end, from native wrapping and code signing to TestFlight and Apple review compliance. But that is just one side of what I do. With 7+ years of professional iOS development experience and a 100% Job Success Score, I build and ship full-scale iOS apps from scratch using Swift, SwiftUI, and UIKit. Fast, clean, and App Store ready from day one. My expertise includes: - Base44 & AI-built app publishing: End to end App Store submission under your own developer account - App Store compliance & rejection rescue: Resolving Guideline 4.2, 4.3, and other rejections - SwiftUI & UIKit development: Building modern, scalable, and production-ready iOS apps - Bug fixing & performance optimization: Improving stability, speed, and memory efficiency - API & third-party SDK integration: Firebase, RevenueCat, push notifications, in-app purchases - Long-term support & team collaboration: A reliable iOS expert on call when you need one What sets me apart is that I understand both sides of the equation. I know how AI builders work and I know exactly what Apple expects. That means fewer rejections, faster approvals, and no surprises. Whether you need a new iOS app built from scratch, want your AI-generated app published to the App Store, or need an experienced engineer to rescue a rejected submission, I deliver on time with clear communication throughout. Let's talk and get your app live :)

🎖️ 𝗢𝘂𝗿 𝗲𝘅𝗽𝗲𝗿𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝗮𝗿𝗲 𝗱𝗼𝗺𝗮𝗶𝗻 𝗲𝘅𝗽𝗲𝗿𝘁𝘀 𝗶𝗻 🎖️: ⤷ Digital Enterprise both on web and mobile creating standalone and enterprise-level apps with web admin using iOS, Swift, Android, Java, Kotlin, Flutter, blockchain and React Native. ⤷ IT services – Experienced with QA experts (selenium, QTP, Jmeter), UI/UX Developers, Back-end support system, PPC, Link Building, SEO, Digital Marketing, Branding, Data Mining. ⤷ Healthcare (HIPPA, HIX, Tele-health, home care, rehab, dental, EDI, RCM, practice management, Medication & Care Management, Clinical Analytics, adjudication, insurance, reinsurance, preventive care, wellness, health risk assessment) for web/windows/mobile platform for enterprise and small to medium clients. ⤷ Business Automation (CRM, ERP, Service management, compliance, insurance, process flow, off-road/on-road parking systems, food ordering, taxi, ride-sharing, learning, delivering systems, On-demand service, POS). ⤷ In-App Purchase, Stripe SDK, and other payment systems 🛠️ 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗢𝗳𝗳𝗲𝗿𝗲𝗱: ✔ Web Development Services {​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​PHP (framework like Laravel, Symfony, CodeIgnitor, Yii, CakePHP), CSS3/ HTML5, WordPress, API web services, MEAN stack, E-commerce, Woo-commerce, Magento, Python, React.js, Angular, Node.js, JavaScript}​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​ ✔ Web Design Services (Responsive web design, mobile app design, graphic design (UX/UI), logo design, website redesign) ✔ Mobile App development services (Android, iOS, Native apps, Flutter) ✔ Internet Of Things (Android custom ROM, Geekbox, Raspberry Pi Development) ✔ Software Testing (Manual, Automation Testing) ✔ Digital Marketing (SEO, SEM, SMO, PPC, On Page, Off Page, link building, Ex-plainer video, Brand management) ✔ AdMob, Google Maps, Segment, Iterable, Apollo GraphQL 💁🏼 𝗛𝗼𝘄 𝘄𝗲 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂: ⤷ Build a Mobile app from idealization to MVP and beyond ⤷ Revive, update or fix existing applications in need of some care and feeding ⤷ Integrate new or existing applications into popular back-ends like Firebase or AWS ⤷ Get previously stalled app development efforts over the finish line ⤷ Consult on feature possibilities, App Store guidelines, and monetization strategies ⤷ Perform code reviews 🏆 𝗢𝘂𝗿 𝗧𝗲𝗮𝗺: We at 𝙊𝙕𝙑𝙄𝘿 𝙏𝙚𝙘𝙝𝙣𝙤𝙡𝙤𝙜𝙞𝙚𝙨, have got a qualified and talented bunch of Management Graduates, Business Analysts, Software Developers, Project Managers, Sales and Marketing professionals, Graphic Designers, Writers for our energetic and productive team. Our management team is a melting pot of talent and experience, drawn from a variety of fields. Their valuable exposure to the workings of international markets helps them clearly understand the global perspectives of our customers. 🗝️ 𝗞𝗲𝘆 𝗮𝗰𝘁𝗶𝘃𝗶𝘁𝗶𝗲𝘀: ⤷ Needs and requirements gathering and analysis ⤷ Data modelling, object-oriented analysis, and design, user interface prototyping ⤷ Software, web, and database development ⤷ Source code quality assurance 💻 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗣𝗹𝗮𝗻: The design and development of the whole product will be in phases. ✅ Phase 1: - Wireframes of the applications and Admin Panels: It will clarify the features of the application and also will help us to clarify the number of screens and flow of the application and admin panel. ✅ Phase 2: - UI/UX Designs of the applications and Admin Panels: It will clarify the look and feel of the application and admin panel and give us a better picture of the whole system. It will be a dummy interactive mobile application and admin panel. ✅ Phase 3: - Requirement Specification Documentation: All the requirements, including business, functional, and non-functional requirements, will be written down in the Requirement Specification document and shared with the client for approval. ✅ Phase 4: - Mobile Application and Admin Panel Development: After completing the above three phases, the developers will start working on the project's development according to the UI/UX Designs and requirement documentation. Clients will be able to see the progress of the application too. We will complete the development of mobile applications and the admin panel in milestones. Milestones will be delivered to the client on an agreed date and time.

I’m a Senior iOS Developer with 10+ years of professional experience and an MS in Computer Science. I help companies design, build, and scale high-quality iOS applications that are reliable, intuitive, and crash-free. 🚀 What I Bring Proven iOS Expertise – Swift, SwiftUI, Objective-C, and cross-platform (React Native, Kotlin). BLE Mesh & Firmware Communication – Experience developing apps that integrate with BLE Mesh lighting systems and embedded firmware, including device provisioning, node status monitoring, and OTA updates. End-to-End Delivery – From architecture & development to App Store release & maintenance. Payments & Fintech – Integrated Apple Pay, Revolut Pay, VISA SDKs and built secure banking solutions. Performance & Testing – Increased code coverage from 20% → 75% and delivered 99% crash-free user rate. Agile Collaboration – Worked with international teams in Agile/Scrum, mentored juniors, and led technical interviews. 🏆 Highlights Travel & Flight Booking App – migrated core pages from Objective-C to SwiftUI, integrated payment SDKs. Firebase integration, Remote Config & Analytics & Crashlytics. iOS Banking App – led full rebuild with modular architecture, achieving 80%+ test coverage. Indoor AR Navigation App – developed custom pedometer & beacon-based positioning system for a large hospital. BLE Mesh Lighting Control App – built iOS app for provisioning, controlling, and monitoring BLE Mesh devices with firmware-level communication. 🔧 Tech Stack iOS: Swift, SwiftUI, Objective-C, XCTest, XCUITest, Snapshot Testing Connectivity: BLE Mesh, Bluetooth Low Energy, Firmware Communication, OTA updates Backend & Cloud: Node.js, Flask, FastAPI, AWS, Azure, Docker, Kubernetes ML/AI: TensorFlow, PyTorch, Generative AI, Computer Vision, Medical Imaging ✅ If you need a reliable senior engineer who can deliver production-ready, scalable apps, let’s connect. I can help with new builds, app modernization, bug fixing, and advanced features like BLE Mesh integrations, payments, AI, or cloud backends. Below I am sharing a few categories of apps that I have developed from scratch. *Flight Booking Application * Online Payment Application * Banking Application * Fintech Application * Navigation and Indoor Navigation Application * Image processing *Bluetooth Mesh *Bluetooth - BLE * Document Management && E-sign Application * E-commerce Application * Beacon Based Application * Photo Editing Application

🚀 Staff iOS Engineer (10+ yrs) — Real-time Video/VoIP & AI Integration I build and fix iOS/macOS apps fast—clean, stable, and ready to ship. Previously at Fanatics (Live & Collect), Agora (macOS Tech Lead), and RingCentral (Staff Engineer). I specialize in two high-value areas: real-time audio/video systems and production AI integration. ✅ Selected impact • Reduced crash rate 10x through systematic stability work (crash/ANR triage, threading, memory) • Improved user NPS +40% via closed-loop quality optimization • Evolved a live platform from viewer-only → full broadcaster (streaming + interactions) • Built ANR monitoring (main-thread blocking detection) → 3x faster issue resolution • Experience shipping for massive-scale consumer products (e.g., bilibili-level traffic) 🎥 Real-time audio/video & streaming (production) • Live streaming & video conferencing: LiveKit / Agora SDK / Amazon IVS • AVFoundation capture/render pipelines, recording/upload, performance tuning • CallKit + PushKit VoIP calling (background, reconnect, audio routes, reliability) • Real-time interactions: auctions, voting, chat (WebSocket / GraphQL Subscriptions) • Screen sharing: iOS App Extension + macOS plugins • Socket/IM architecture experience; solid networking fundamentals (TCP/UDP) 🤖 AI integration • OpenAI / Claude API integration for user-facing features • HealthKit + Apple Watch data pipelines (sleep/HR/activity/workouts) • Prompt & context management, on-device + cloud orchestration for personalized insights 🏗️ Architecture & engineering • Clean Architecture / SOLID, protocol-oriented DI, modular design • TCA & MVVM (migration and coexistence), Swift Concurrency (async/await, Actors) • Swift + Objective-C, pragmatic refactors, long-term maintainability 🧪 Quality & delivery • Tests: XCTest/XCUITest, snapshot tests; TDD when valuable (Quick/Nimble) • CI/CD: Fastlane, Jenkins/GitHub Actions/Xcode Cloud, TestFlight/App Store release • Logging/analytics (e.g., Firebase/Crashlytics) to locate root causes quickly 🛠️ How I work • Start with a short paid assessment → confirm scope, estimate, and risks • Milestones with demos + clear acceptance criteria • Strong communication, pragmatic testing, and maintainable Swift • Available 40 hrs/week, fluent in English, timezone-friendly and responsive 💻 Equipment: Mac Studio (M1 Max, 32GB), dual 28” 4K monitors, 1Gbps fiber. If you’re building live video/VoIP features, integrating AI into an app, or need to stabilize and scale an existing codebase, feel free to message me—happy to review your scope and propose a plan.

I help startups and businesses build high-performance iOS apps using modern SwiftUI and AI integration (CoreML & LLM APIs). Top Rated on Upwork | $10K+ Earned | 5-Star Reviews Whether you need a new app from scratch or want to add AI features to your existing iOS app — I deliver clean, maintainable code on time. What I specialize in: - SwiftUI — modern, responsive iOS interfaces - CoreML & AI integration — smart app features - REST API & backend integration - App Store submission & optimization Let's build something great together.

I build production-ready native iOS apps in Swift and SwiftUI, with clean architecture, smooth App Store launches, and code that scales. I'm Top Rated with a 100% Job Success Score and more than 10 years of software engineering behind me. I specialize in native iOS development across the full lifecycle: SwiftUI and UIKit, MVVM and clean architecture, offline data with SwiftData and Core Data, and App Store submission through TestFlight and App Store Connect. I'm as comfortable modernizing a legacy UIKit codebase into SwiftUI as I am shipping something new from a blank Xcode project. I currently work day to day on the native iOS app for a major hospitality brand, a large production codebase that mixes UIKit and SwiftUI, so I'm fluent in the messy realities of maintaining and evolving real apps at scale rather than greenfield demos. To keep the apps I ship reliable, I also set up CI/CD with Fastlane, Xcode Cloud, and GitHub Actions, write automated tests with XCTest and Swift Testing, and integrate cleanly with REST and GraphQL backends. That end-to-end depth means fewer handoffs and fewer surprises before release. If you're building or improving a native iOS app and want someone senior who'll get it into users' hands cleanly, send me a message with what you're working on and I'll be happy to talk it through.

I help founders and product teams ship and stabilize production systems across mobile + backend—especially when reliability, security, payments, and “edge cases in the real world” matter. I’m a former Capital One Staff Engineer (Payments) and have delivered work for organizations including the Library of Congress. I’m comfortable operating in production safely, debugging messy systems, and modernizing workflows without rewriting everything. Recent and notable work • CakeClub (iOS + Firebase): Turnaround to production-ready. Built a Firebase Cloud Functions v2 backend for budget calculations and transaction sync, secured Plaid token storage with encryption keys protected in Google Secret Manager, implemented Firebase App Check, integrated RevenueCat, added Crashlytics/Analytics, and created an admin panel with role-based access. Established QA + Production environments and CI (Xcode Cloud + GitHub Actions). • Genie AI: Contributed to shipping and stabilizing production workflows under real constraints, focusing on reliability and execution. What clients hire me for • Production stability: crashes, retries/double submits, inconsistent state, payments/webhooks • Shipping and launch closeout: TestFlight/internal testing → App Store / Play Store • Mobile + backend alignment: when client behavior and backend reliability interact under poor networks If you want a senior engineer who communicates clearly, works independently, and delivers production-safe improvements, I’m a good fit.

30 years writing software, the last several fully native Apple: Swift, SwiftUI, and the system frameworks most developers never touch — CoreMediaIO virtual cameras, ScreenCaptureKit, Accessibility-API automation, BLE device integration, CloudKit, StoreKit/RevenueCat, CarPlay entitlements. What I've shipped: - Consumer iOS/macOS apps on the App Store — pet-safety monitoring with CloudKit two-device pairing, a SwiftUI menubar calculator, BLE health-device apps that reverse-engineer defunct hardware to keep it alive, an ADV/supermoto navigation app with custom offroad routing and CarPlay integration, and voice-transcription utilities monetized end-to-end - System-level macOS — CoreMediaIO virtual cameras, ScreenCaptureKit capture, on-device AI overlays (WhisperKit + Foundation Models), and Accessibility-API automation that drives native apps with no exposed API - Full release pipelines — signing, notarization, App Store submission, and release automation, so "done" actually means shipped How I work: I've been writing code since before most of today's frameworks existed, and I've adapted deliberately — I run agentic coding tools (Claude Code and others) as part of my own toolchain to move faster on scaffolding and boilerplate, while architecture, system-level design, and final code quality stay mine. That combination is the point: three decades of judgment about what's actually going to work, paired with modern velocity. I take full ownership from concept to shipped product. I'm also comfortable stepping into a technical-lead role — setting architecture, untangling systems that have outgrown their original design, and giving a project the structure it's missing. Best fit for clients who need senior-level execution on hard, native Apple problems: someone who owns it end to end rather than waits for specs. Message me — happy to talk specifics.