I've been at it since 2009 — developing iOS apps for startups, software development agencies, and large corporations. I'm great with UI & UX design, and specialize in audio and music software. App development is often an exercise in striking a balance between the ideal functionality and what can be achieved within a short timeline. The objective is to minimize time and effort while providing an exceptional user experience. I enjoy this balancing act — it's the core of the value I provide to my clients, in addition to clean & easily maintainable code, and interfaces that look and feel sublime. Services: • iOS Development • UI & UX Design • Music & Audio Apps Languages and frameworks: • SwiftUI, UIKit • Swift, Objective-C, C, C++ • Core Audio, AVFoundation, AudioKit, and a trillion other frameworks Tech: • In-App Purchases / Subscriptions • API Integration • REST APIs • Supabase • Firebase • Localization • Analytics • Unit Testing • CI/CD • Xcode • Git If you have an app, an idea, or both — let's connect!

🏆 10+ Successful Projects | 100% 5-Star Reviews | $30K+ 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.

Mobile App Developer since 2014 working on mobile apps across both Android and iOS, working in both small startups as well as large enterprises. I have worked primarily in the health, medical devices, fitness and travel sectors.

✅ “Mazen was fantastic to work with—delivered high-quality work, exceeded our expectations, and was always proactive. We’ll definitely work with him again!” – Just one of many happy clients. If you want the same level of expertise, check out my profile. 🚀 About Me Hi, I’m Mazen! I’m a Full Stack Developer specializing in mobile development with Flutter and backend development with Laravel. My goal is to help you build high-quality, maintainable, and scalable applications that drive real business value. I take pride in delivering pixel-perfect, high-performance apps with clean and efficient code, ensuring smooth user experiences and easy maintainability. 🔹 Flutter Expertise: • State Management: Riverpod, Bloc, Provider • Pixel-perfect UI implementation • Firebase Integration (Auth, Firestore, Push Notifications, Analytics, Crashlytics) • MVVM & Clean Architecture • Payment Systems: Paypal, Stripe, Razorpay, Apple Pay, Paytm, and many others • Real-Time Chat Integration (Sendbird, Intercom) • Analytics & User Tracking: MixPanel, Segment • Unit & Integration Testing • CI/CD Pipelines for seamless deployment • GraphQL & REST API Integration • Native Android & iOS SDK Integration 🔹 Backend Development (Laravel): • RESTful API Development • Authentication & Authorization (JWT, OAuth, Social Login) • Real-time WebSockets & Notifications • Database Optimization & Performance Tuning • Payment Integration (Stripe, PayPal, etc.) • Web Scraping & Data Processing • Vue.js & Livewire for Interactive Web Apps • Unit & Integration Testing • CI/CD Automation 🔹 Tools & Technologies I Work With: • Cloud Services: AWS, Google Cloud, DigitalOcean • Databases: MySQL, PostgreSQL, Firebase, MongoDB • AI & ML Integration: OpenAI ChatGPT, AI-based Features • Design & Prototyping: Figma, Adobe XD, Sketch • Project Management: JIRA, ClickUp, Trello, Slack • Version Control: GitHub, Bitbucket, GitLab 🚀 Why Work With Me? • Proactive & Solution-Oriented – I don’t just build apps; I help refine ideas and improve products. • Efficient & Reliable Remote Work – Strong experience working independently with minimal supervision. • High-Quality Code – Clean, maintainable, and scalable, ensuring long-term success. If you’re looking for a dedicated developer to bring your vision to life, send me a message—let’s build something amazing together! 🎯 Android, Native Android App Developer, iOS, iOS App Developer, Flutter, Cross-Platform Mobile Apps, Android Studio, Apple Xcode, Kotlin, Java, Swift, SwiftUI, UIKit, Core Data, MapKit, Realm, SQLite, Firebase Cloud Firestore, Realtime Database, In-app Purchases, Push Notifications, Location Services, User Authentication, User Profile Creation, Payment Gateway Integration, 3rd Party SDK Integration, Twilio, Mapbox, HealthKit, Google Analytics, Amazon Web Services, DigitalOcean, QA Testing, Unit Testing, Regression Testing, Dating App, Ecommerce App, Ride Booking App, Phone, iPad, Laravel, PHP, Web App Development, REST API Development, Admin Panel, Backend Development

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 :)

🎖️ Top Rated Plus on Upwork (Top 3%) ✔️ 100% Job Success – Proven track record of client satisfaction ✔️ 20+ Successful Projects completed ✔️ 1,000+ Hours worked and still counting I’m an experienced Software Engineer with over 8 years of expertise, specializing in Apple platforms for the past 5 years, with a focus on iOS development. My tech stack enables me to deliver innovative, high-performing, scalable apps. With 3 years of graphic design experience, I ensure pixel-perfect execution, and my 5 years in management helps me lead teams and optimize workflows. I’ve consistently exceeded client expectations across various industries with outstanding performance and engagement. Tech Stack & Approach: 👾 iOS Development: Expert in Swift and SwiftUI for building native iOS applications optimized for the latest iOS updates. Proficient in modern design patterns such as MVVM, VIPER, TCA, and Clean Architecture, ensuring scalable, maintainable, and high-performance apps with clean code and a solid structure. 👾 watchOS, tvOS, macOS, iPadOS, visionOS: Skilled in developing for Apple’s broader ecosystem, creating seamless apps for watchOS, tvOS, macOS, iPadOS, and the latest visionOS. Focused on delivering apps that fully leverage the unique capabilities of each platform for an optimized user experience. Tools & Technologies: 🥷🏻 iOS Tech Stack: Swift, SwiftUI, UIKit, CoreData, Combine, AVFoundation, CoreLocation, MapKit, HealthKit, Animations, Bluetooth, NFC, CallKit, StoreKit, PushKit, Push Notifications 🥌 Design Tools: Figma, Adobe Creative Suite (for UI/UX collaboration) 📎 Backend: RESTful APIs, Firebase, GraphQL 📎 CI/CD: Fastlane, Jenkins, Git, GitHub 📎 Project Management: JIRA, Trello, Slack, Monday 📎 Testing & Automation: XCTest, Snapshot Testing I’m proficient in Agile/Scrum methodologies with a deep understanding of the full app development lifecycle—from concept to deployment and continuous improvement. I excel in troubleshooting, team management, and mentoring developers, fostering faster, more efficient workflows. My goal is to deliver high-quality products and solve complex technical challenges to drive business growth. 💬 Invite me for a free 30-minute consultation to discuss how I can help your project succeed.

Senior iOS developer with 15+ years building native apps - from small MVPs to products used by tens of millions. I work solo as the sole developer on every project, combining deep engineering depth with senior business leadership experience (VP roles at companies like Activision Blizzard). $1M+ earned on Upwork as a non-agency developer, 100% job success score for over a decade, Top Rated Plus, and Expert Vetted. Whether you're launching something new, rescuing a stalled project, or evaluating AI-built code before shipping, I bring both the technical judgment and the business context to help you make decisions that hold up. The "No-Agency" Guarantee: No handoffs. No junior developers. No communication gaps. When you hire me, you get 15+ years of senior judgment applied to every line of code. ◆ Why Work With Me • 15+ years building iOS apps with millions of users. • Expert in Swift, SwiftUI, Objective‑C, and services like Firebase, AWS, RevCat, AdMob, and APIs. • AI-assisted development used deliberately, with senior judgment on quality and architecture. • Business fluency in budgeting, product strategy, and communication. • PMP certified; led 7‑figure projects at companies like Activision Blizzard. • Honest recommendations, even when that means pushing back or suggesting a different path. ◆ Services • End-to-End iOS Development: From concept to App Store launch. • AI Code Cleanup: Stabilizing and refining apps built by AI into production-ready products. • Project Rescue: Fix bugs, refactor code, modernize UI/UX, and get stalled apps back on track. • AI-Powered Features: Intelligent text, image, and voice capabilities to give your app a competitive edge. • App Store Strategy: Compliance, monetization, and feature planning to maximize success. ◆ What Clients Say (150+ Five-Star Reviews) "Scott is truly outstanding. Extremely skilled, great communicator, professional, ethical, resourceful, dependable, responsive. A huge asset and leader for any project." - Native iOS App (1,035 hrs, 5.0⭐) "Scott is a rockstar. Scott is strategic and extremely capable and always delivers. I will definitely work with him again." - Native iOS App (592 hrs, 5.0⭐) "Scott is the 'total package' - responsive, skilled, fair, detail-oriented and many more positive attributes. I would highly recommend him for any project." - Apple TV App (403 hrs, 5.0⭐) ◆ Let’s Build Something Great Every project I take on gets my full attention - I work solo, limit the number of simultaneous clients, and stay engaged from the first call through delivery. If you want to talk through your project, I'm happy to start with a short call or my 1-hour consultation. Either way, no pitch and no obligation.

Senior iOS engineer at EltexSoft, a Top Rated Plus agency with 200+ five-star reviews. 8+ years shipping production iOS applications. $200K+ earned on Upwork with 100% Job Success across every contract. I build iOS apps that ship, scale, and stay maintainable. My work includes apps featured on the App Store, enterprise tools for Fortune 500 teams, health tech platforms, POS systems, and media creation tools used by millions. NOTABLE WORK — Unfold: media creation app (Apple featured, millions of users) — POS and payment system for a reservation platform ($100K+ contract) — iOS affirmation app: multi-year engagement, 2,400+ hours delivered — Free Stuff Finder: #2 US coupon app (1M+ downloads, iOS) — MOTTIV: endurance training app with Strava/Garmin integration WHAT I BRING — Production Swift/SwiftUI: MVVM, Combine, async/await, SPM — Full App Store lifecycle: TestFlight, CI/CD (Fastlane, GitHub Actions), ASO — Integrations: HealthKit, CoreBluetooth, ARKit, MapKit, StoreKit, CoreData — Payments: Stripe, in-app purchases (StoreKit 2) — Backend coordination: REST APIs, GraphQL, WebSocket, Firebase I work in a dedicated squad model through EltexSoft — you get me plus QA, backend support, and a delivery manager. Long-term engagements preferred.

Looking for an expert-vetted app developer who doesn't just burn hours and waste your money? You've found someone with: - 11 years of experience delivering high-quality, successful apps to clients - a specialty in monetization and UX design, because I have my own revenue generating apps, and these are the biggest "money levers" - and, a habit of never pressuring you to do anything you don't need. If you are looking to: - create a new app, - make your existing app into a best-in-class beast, - or grow revenue with a subscription model, ... you are in the right place. I take a test-and-iterate approach to all things. We start with the smallest bet that we can make and see if it produces the desired results. Then, we learn what works and what doesn't; and make progressively bigger bets until we get the big payoff. This philosophy has led to successful app launches for me, my past employers, and most important of all, my past clients. Go for someone that will actually deliver, with full transparency in communication. Feel free to send an invite - after all, what's the worst that could happen?

✅ 𝟐𝟎 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐣𝐨𝐛𝐬 = 𝟏𝟖𝟎,𝟎𝟎𝟎$+ 𝐞𝐚𝐫𝐧𝐢𝐧𝐠𝐬 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞𝐝 👨‍💻 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐝 & 𝐈𝐦𝐩𝐫𝐨𝐯𝐞𝐝 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐜𝐡𝐮𝐫𝐧 𝐫𝐚𝐭𝐢𝐨 𝐭𝐨 𝟏𝟎𝟎𝐤+ 𝐝𝐨𝐰𝐧𝐥𝐨𝐚𝐝𝐬 📲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐢𝐧 𝐡𝐢𝐠𝐡 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝑾𝒉𝒚 𝒎𝒆? ★ Consider me a 𝐠𝐞𝐧𝐢𝐞 in 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 & 𝐍𝐨𝐝𝐞𝐉𝐒 mobile application, your wish will be my command but not every bad wish will be granted. ★ Work with an experienced full-stack 𝐌𝐨𝐛𝐢𝐥𝐞 developer that doesn't compromise the code and business needs. ★ I won't let you struggle with your needs. 𝐄𝐯𝐞𝐫𝐲𝐭𝐡𝐢𝐧𝐠 𝐢𝐬 𝐝𝐨𝐚𝐛𝐥𝐞 in 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 Mobile application and I have that vision to do it for your business. ★ Have enough experience seeing startups 𝐬𝐮𝐜𝐜𝐞𝐞𝐝 𝐚𝐧𝐝 𝐟𝐚𝐢𝐥 and I don't want you to fail due to any of developers fault. ★ I travel in 🏆 𝐰𝐢𝐧𝐧𝐞𝐫𝐬 bandwagon so its up to you whether you want to start this journey with me. 𝑨𝒃𝒐𝒖𝒕 𝒎𝒆? ● 𝐍𝐞𝐫𝐝 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 & 𝐍𝐨𝐝𝐞𝐉𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 wood pecking every details of the code. ● Absolute genius in writing high intensive algorithms to drive your business needs and solve your problems. I developed the 𝐬𝐡𝐨𝐫𝐭𝐞𝐬𝐭 𝐫𝐞𝐯𝐞𝐧𝐮𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 to drive customer growth. ● 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐫𝐚𝐢𝐬𝐞𝐝 𝟐𝟎 𝐦𝐢𝐥𝐥𝐢𝐨𝐧 𝐮𝐬𝐞𝐫𝐬 in 3 years time span. ● Keen eye for detail in developing and transforming design to code. Expertise in Figma, Miro, Sketch, xD. ● Excellent in 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐢𝐧𝐠 & 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐧𝐠 custom backend(REST or SOAP API's), Supabase, Firebase or AWS Amplify with AWS AppSync. 𝑻𝒆𝒔𝒕𝒊𝒎𝒐𝒏𝒊𝒂𝒍𝒔 1. Queue online Flutter Application - 𝟓.𝟎 ⭐ "𝙄 𝙧𝙚𝙖𝙡𝙡𝙮 𝙡𝙞𝙠𝙚 𝙬𝙤𝙧𝙠𝙞𝙣𝙜 𝙬𝙞𝙩𝙝 𝙎𝙮𝙚𝙙. 𝘾𝙖𝙣 𝙩𝙖𝙠𝙚 𝙛𝙪𝙡𝙡 𝙤𝙬𝙣𝙚𝙧𝙨𝙝𝙞𝙥 𝙖𝙣𝙙 𝙙𝙧𝙞𝙫𝙚 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩. 𝘼𝙡𝙨𝙤 𝙜𝙤𝙤𝙙 𝙘𝙤𝙢𝙢𝙪𝙣𝙞𝙘𝙖𝙩𝙞𝙤𝙣 𝙖𝙣𝙙 𝙬𝙖𝙣𝙣𝙖 𝙡𝙚𝙖𝙧𝙣." 2. Senior Flutter Developer - Totem - 𝟓.𝟎 ⭐ "𝙍𝙖𝙯𝙖 𝙬𝙖𝙨 𝙖𝙣 𝙞𝙣𝙩𝙚𝙜𝙧𝙖𝙡 𝙥𝙖𝙧𝙩 𝙤𝙛 𝙤𝙪𝙧 𝙩𝙚𝙖𝙢, 𝙖 𝙜𝙧𝙚𝙖𝙩 𝙘𝙤𝙡𝙡𝙖𝙗𝙤𝙧𝙖𝙩𝙤𝙧 𝙖𝙣𝙙 𝙖𝙣 𝙚𝙭𝙥𝙚𝙧𝙞𝙚𝙣𝙘𝙚𝙙 𝙙𝙚𝙫. 𝙒𝙤𝙪𝙡𝙙 𝙧𝙚𝙘𝙤𝙢𝙢𝙚𝙣𝙙 𝙖𝙣𝙮 𝙩𝙞𝙢𝙚." 3. Flutter Food Distribution Application - 𝟓.𝟎 ⭐ "𝙂𝙧𝙚𝙖𝙩 𝙟𝙤𝙗 𝙫𝙚𝙧𝙮 𝙨𝙖𝙩𝙞𝙨𝙛𝙮𝙞𝙣𝙜 𝙬𝙞𝙩𝙝 𝙝𝙞𝙨 𝙬𝙤𝙧𝙠, 𝙄 𝙬𝙤𝙪𝙡𝙙 𝙙𝙚𝙛𝙞𝙣𝙞𝙩𝙚𝙡𝙮 𝙧𝙚𝙘𝙤𝙢𝙢𝙚𝙣𝙙 𝙩𝙤 𝙝𝙞𝙧𝙚 𝙝𝙞𝙢 𝙖𝙜𝙖𝙞𝙣" 4. Getscope Flutter Application - 𝟓.𝟎 ⭐ "𝘼𝙬𝙚𝙨𝙤𝙢𝙚 𝙚𝙭𝙥𝙚𝙧𝙞𝙚𝙣𝙘𝙚. 𝙒𝙤𝙪𝙡𝙙 𝙙𝙚𝙛𝙞𝙣𝙞𝙩𝙚𝙡𝙮 𝙧𝙚𝙘𝙤𝙢𝙢𝙚𝙣𝙙." 𝑺𝒐𝒖𝒏𝒅𝒔 𝒍𝒊𝒌𝒆 𝒂 𝒇𝒊𝒕? Next steps: 📩 Invite me or send a message and I will be at your service. 💬 Just write me a note so that I am at your disposal to discuss further requirements. Just do the initial steps and leave the rest to me.