I create high-performance mobile applications that solve complex problems and enhance user experiences. With 14 years of experience, I specialize in mobile development and have a proven record of architecting applications from the ground up and integrating new features into existing systems. My strong technical expertise is complemented by creative problem-solving and analytical skills, enabling me to deliver innovative solutions. I thrive on collaboration, actively supporting team objectives and fostering a high-performing environment. One of my notable projects includes an interactive app for event management that seamlessly integrates functionality for both Android and iOS. If you're seeking a reliable developer who can bring your mobile vision to life, let’s connect and discuss how I can help turn your ideas into reality. - Knows Swift, Kotlin, React, Flutter, MySQL, C#. - Full Project management from start to finish - Consistent collaboration is absolutely necessary

I help businesses build intelligent mobile and desktop applications powered by AI. My focus is on building products that are fast, secure, privacy-first, and ready for real users. My experience covers Android, iOS, desktop application development, on-device machine learning, computer vision, OCR, and AI infrastructure. I enjoy taking ideas from research or prototypes and turning them into production systems that perform well under real-world constraints. My core strengths include ⚡Android application development using Kotlin, Java, Jetpack Compose, Android SDK, and modern Android architecture ⚡iOS application development using Swift, SwiftUI, and UIKit ⚡Desktop application development using Compose Multiplatform, JavaFX, and Electron ⚡Cross-platform development with Flutter and Kotlin Multiplatform ⚡On-device AI using TensorFlow Lite, ML Kit, MediaPipe, PyTorch Mobile, and ONNX Runtime ⚡Computer Vision solutions for image analysis, object detection, facial recognition, document understanding, and visual intelligence ⚡OCR pipelines for extracting structured data from invoices, receipts, IDs, medical records, and business documents ⚡HIPAA-compliant document processing with secure storage, encryption, audit logging, and privacy-first architectures ⚡AI model optimization through quantization, pruning, and performance turning for mobile devices ⚡Telemetry, performance monitoring, secure logging, and production observability ⚡ML deployment pipelines and infrastructure for scalable model management ⚡Android security including permissions, sandboxing, encryption, and secure data handling ⚡Backend integration with REST APIs, GraphQL, Firebase, Supabase, Websockets, and cloud services I like solving engineering problems where AI has to work reliably in production, not just in a demo. Whether it's real-time computer vision, intelligent document processing, AI-powered mobile applications, or privacy-preserving ML, I focus on building solutions that are scalable, maintainable, and deliver measurable business value.

Systems Engineer with over 10 years of experience in mobile development, specialized in native Android (Kotlin, Java, Jetpack Compose, Compose Multiplatform) with additional experience in iOS (Swift). Android Enterprise expert, with deep command of the full Android development lifecycle, UI design principles and best practices, multiple Android versions and screen sizes, offline storage, threading, and performance tuning. Strong software architecture and design, problem-solving, and debugging skills, defining scalable architectures (MVVM, MVI, MVC, VIPER, Clean) grounded in SOLID principles and proven design patterns, and integrating backend services through REST and GraphQL APIs. Experienced in managing the end-to-end delivery process, including publishing and managing app versions on the Google Play Store, and in raising code quality through unit and UI testing (JUnit, Mockito, Espresso) and by leading code reviews that modernize legacy codebases.

As a senior developer with 8+ years of experience in building high-performance mobile applications, I specialize in creating seamless user experiences using Flutter and Native iOS (Swift). What sets me apart is my ability to bridge the gap between complex business logic and elegant technical execution. Having managed my own software projects and business operations, I understand that a successful app isn't just about clean code—it's about scalability, user retention, and time-to-market. My Core Expertise: Mobile: Flutter (Riverpod, Drift, GetX) & Native iOS (Swift/SwiftUI). Backend: Node.js (Express/NestJS) for robust API development. Frontend: React.js for internal dashboards and web admin panels. Architecture: Clean Architecture, MVVM, and performance optimization. DevOps: CI/CD pipelines, App Store/Google Play deployment. Whether you are a startup looking to build a Minimum Viable Product (MVP) or an established business needing to scale your existing app, I provide end-to-end development services that prioritize code quality and maintainability.

I audit iOS apps for accessibility — as a senior iOS engineer with 17+ years shipping mobile products, six apps of my own released on the App Store, and professional assistive-technology experience: I led development of Predictable, an AAC text-to-speech app used by people who cannot speak, and Scene & Heard, a special-education communication tool. Accessibility isn't a checklist for me — I've built products where it was the entire point. MY SHIPPED WORK (highlights) • Wibo: Preschool Games — my accessibility flagship. Full VoiceOver and Voice Control support across every game, Reduce Motion handling, and Accessibility Nutrition Labels declared — in 5 languages (EN/ES/FR/DE/JA). • Decode: AI Document Reader — on-device AI document analysis (contracts, medical bills, scam detection) with privacy-first data redaction. • AI Story Creator for Kids — Apple Intelligence-powered illustrated stories with narrated read-along and word-by-word highlighting, in 4 languages. • NumBee — Preschool Math Game: Common Core-aligned, fully offline, 6 languages, no ads or tracking. WHAT YOU GET FROM AN AUDIT • Screen-by-screen testing: VoiceOver, Voice Control, Dynamic Type, color contrast, Reduce Motion, touch-target sizes — on real devices with Apple's Accessibility Inspector • A prioritized findings report: issue, severity, screenshot, WCAG reference, and the exact fix at the Swift/SwiftUI code level — your developers get answers, not homework • WCAG 2.1/2.2 and EN 301 549 conformance mapping; VPAT (ACR) reports for enterprise sales and EU Accessibility Act compliance • Apple Accessibility Nutrition Labels guidance: exactly which claims your App Store listing can honestly make, and what's blocking the rest WHY NOW The European Accessibility Act is enforceable as of June 2025. Apple now surfaces accessibility labels on every App Store page. Enterprise buyers require VPATs before purchasing. An audit tells you precisely where you stand — with fixes your team can apply the same week. Typical audit: 3–5 business days, fixed price. I also take on iOS development work: accessibility remediation, localization, CarPlay, and on-device AI features (Apple Intelligence, Core ML, Vision/OCR).

iOS Developer | 4+ Years | Swift / Objective‑C | Fluent in English I’m an iOS engineer with 4+ years of professional experience, currently working full‑time at a tech company in China. My daily work covers feature development, legacy code refactoring, memory optimization, and App Store release management. What I can help you with: Build new features using SwiftUI / UIKit Fix tricky bugs and improve app stability Integrate third‑party SDKs (payment, analytics, push, etc.) Optimize app performance (launch time, memory footprint, battery) Handle App Store submission and review issues My technical stack: Swift / Objective‑C UIKit CoreData / Realm / SQLite Git / GitHub Actions / CI Instruments (profiling & debugging) Why me: I write clean, maintainable code with clear comments. I communicate proactively and deliver on time. I also have experience with embedded systems and Bluetooth communication, which helps when working with hardware‑related iOS projects. I’m available for both one‑off tasks and longer‑term collaborations. Feel free to reach out — I usually reply within 12 hours.

Hey there! I am highly experienced Firebase, Ember.js and Node.js software developer. Been working exclusively with Ember.js since 2014. I enjoy making beautiful software, love good design and have necessary HTML, CSS skills to implement that. Since 2017 I've also been working with Google Firebase. In total I've been writing software for last 20 years. Started with JavaEE, moved to Ruby, then iOS and now – Ember.js (single page Javascript) apps mostly with Google Firebase, Firestore, Cloud Functions as a serverless solution and database. Also worked with MongoDB and SQL – PostgreSQL, MySQL.

Professional Summary Having 10 years of experience in developing apps with a proven track record of producing extraordinary results. Energetic, self-starter with excellent analytical, organisational and creative skills. Strong perseverance and diligence towards attaining challenging goals and effective time management.

Hello! I'm Alex, a full stack blockchain developer with expertise in smart contract development, bot creation, and front-end integration. Here are some of the skills I bring to the table: Bot Development I’ve built custom bots to monitor DeFi positions, track NFT ownership, and automate transactions across EVM-compatible chains. Smart Contract Development I’ve written, tested, and deployed smart contracts for DeFi protocols, NFT projects, and custom dApps. NFT Projects I've successfully launched multiple NFT projects, handling everything from metadata creation to deployment.​ Front-End Integration I am experienced with ethers/web3.js, and can seamlessly connect smart contracts with front-ends. Technical Consulting I’ve helped dev teams troubleshoot complex issues and keep projects moving efficiently. My goal is to understand your problem and work with you to deliver a clean, effective solution. Looking forward to working together, Alex

Curious, driven iOS engineer with 10 years of enterprise experience building and maintaining a range of apps across iOS and web. Strong grasp of fundamental engineering principles, an appreciation of well-designed systems, and a track record of diagnosing and resolving deep technical problems. A keen team player who enjoys mentoring and raising the bar on engineering practice, always looking to bring fresh ideas to the table. Key Strengths * Swift & SwiftUI * Leadership & mentorship * UIKit * Attentive to detail * SPM microservices * Web & REST API background * Deep technical problem-solving * Range of programming languages