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Experienced iOS Developer | Long-term Availability | Fix bugs | Testing Skilled in: • SwiftUI, UIKit • Combine • Core Data, Core Location • AVFoundation • RealityKit, ARKit, SceneKit • WidgetKit • RESTful API • Git • Firebase • AutoLayout • GCD • XCTests • MVVM, VIPER Architecture Patterns Why Choose Me? Expert in iOS Development: I specialize in building high-quality, scalable, and user-friendly iOS applications using Swift, SwiftUI, and UIKit. Passionate About Problem-Solving: Whether it's fixing critical bugs, optimizing performance, or implementing new features, I thrive on making apps better. Reliable & Detail-Oriented: I ensure clean, maintainable code and follow best practices to deliver efficient and high-performing apps. Seamless Communication & Long-Term Collaboration: I believe in transparency, clear communication, and long-term partnerships to help businesses succeed. Looking forward to possibility of contributing to your product success! Best regards, Zhasmina Dybysbay

I build high-quality Flutter apps for iOS and Android with clean architecture and fast performance. With 10+ years of experience in mobile and full-stack development, I have successfully launched apps on the App Store and Google Play. I can help you build your app from scratch, fix bugs, improve performance, or implement features like API integrations, Firebase, and payments. I focus on delivering stable, scalable, and production-ready solutions. Let’s discuss your project.

𝟗𝟎𝟎,𝟎𝟎𝟎 𝐜𝐥𝐢𝐞𝐧𝐭𝐬. 𝟏.𝟑𝐌 𝐢𝐧𝐯𝐨𝐢𝐜𝐞𝐬 𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐞𝐝 𝐦𝐨𝐧𝐭𝐡𝐥𝐲. 𝟏𝐌+ 𝐮𝐧𝐢𝐪𝐮𝐞 𝐮𝐬𝐞𝐫𝐬. 𝟐𝟏 𝐲𝐞𝐚𝐫𝐬 𝐭𝐮𝐫𝐧𝐢𝐧𝐠 complex requirements into clean, scalable products end-to-end. 𝑩𝑶𝑶𝑲 𝑨 𝑭𝑹𝑬𝑬 𝑪𝑨𝑳𝑳 - 𝑻𝑬𝑪𝑯 𝑪𝑶𝑵𝑺𝑼𝑳𝑻𝑨𝑻𝑰𝑶𝑵 𝑶𝑹 𝑪𝑶𝑫𝑬 𝑨𝑼𝑫𝑰𝑻 Need a production-ready MVP that ships on time and works flawlessly? I'm a senior full-stack engineer who builds complete products - mobile + web + backend + database + cloud - the kind of end-to-end ownership that reduces coordination overhead and delivers reliable software fast. What sets me apart: genuine depth across the full stack - Flutter/Dart mobile, Angular web, ASP.NET Core/C# backend, PostgreSQL/MSSQL data, Azure infrastructure. I've built government utility platforms processing 1.3M+ invoices monthly, banking systems serving 900K+ clients, and consumer apps at 1M+ monthly users. I know both the user experience and the server architecture that keeps it running under real load because I build both. Here's what I can build for you: 📱 Cross-platform Flutter apps for iOS and Android (Bloc, Provider, REST API, OAuth, WebSockets) 🔧 .NET / ASP.NET Core backend APIs and microservices 🗄️ Founder-led MVPs - complete product from concept к App Store / production launch 🌐 SaaS platforms - multi-tenant + multi-role + Stripe subscriptions + admin dashboards ☁️Multi-stakeholder marketplaces - customer/provider/admin platforms + payments + workflows 🔍 Legacy modernization - .NET conversion + refactor + performance optimization + long-term ownership ✅ Top Rated on Upwork - 5.0 rating across all completed contracts ✅ Solo senior, every line of code written by me, single point of contact throughout engagement ✅ 21+ years of professional software development Not sure where to start? 𝑩𝒐𝒐𝒌 𝒂 𝒇𝒓𝒆𝒆 𝒄𝒂𝒍𝒍 - I'll audit your codebase or talk through your idea, no obligation.

👋For existing projects, I can run a code audit. For new projects, I can prepare an MVP roadmap. 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐭𝐨𝐝𝐚𝐲. 𝐖𝐫𝐢𝐭𝐞 𝐦𝐞 𝐡𝐞𝐫𝐞 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤. 𝐈 𝐫𝐞𝐩𝐥𝐲 𝐰𝐢𝐭𝐡𝐢𝐧 𝐨𝐧𝐞 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐝𝐚𝐲, 𝐮𝐬𝐮𝐚𝐥𝐥𝐲 𝐰𝐢𝐭𝐡𝐢𝐧 𝟑𝟎 𝐦𝐢𝐧𝐮𝐭𝐞𝐬. Operational & data platforms for multi‑location and B2B businesses - booking, smart search, and offline field ops, with AI built in. I build full-stack web platforms, mobile applications, and AI-powered products - from React / Laravel systems and React Native apps to Python backends, AI agents, integrations, databases, APIs, and deployment. Results I’ve delivered: ✔️ Increased revenue 2× - from $7.5M to $15M with a mobile platform used across 200+ spa salons ✔️ Built an MVP from scratch in 6 months and reached $30K in revenue ✔️ Built AI-powered search and recommendation systems for real-world products ✔️ Built an internal AI sales agent that reduced proposal preparation from 2–4 hours to 30–60 minutes What I do: ❇️ AI Agents & AI Automation I build custom AI agents and AI bots for sales, customer service, lead generation and internal business workflows. Agents can work with company data, understand natural language, keep context, call APIs and trigger actions. I work with Python, OpenAI, Gemini, machine learning models and API integrations to turn business processes into working AI workflows. ❇️ AI Integration & LLM Development I integrate Artificial Intelligence into existing products and build AI features from scratch - natural language processing, semantic and vector search, RAG, recommendations, document analysis, image understanding and multimodal AI. My AI stack includes OpenAI API, Google Gemini API, Grok, Qdrant, pgvector, CLIP, MiniLM, Jina Reranker, PyTorch, DSPy and LangSmith, depending on the project. ❇️ Python AI & Full-Stack Development As a Python full-stack developer, I build complete applications with Python, FastAPI and PostgreSQL, connecting AI logic with React and JavaScript frontends. I work with REST APIs, GraphQL, API integration, SQL, PostgreSQL, MySQL, Redis and RabbitMQ for data-heavy and real-time applications. For frontend development I use React, Next.js, Vue.js, Nuxt.js, JavaScript, TypeScript, HTML, Tailwind CSS, Vite and Webpack. ❇️ SaaS & Custom Web Development I build SaaS platforms, marketplaces, internal business systems and complex web applications. My backend experience also includes PHP, Laravel, Laravel Nova, ElasticSearch, Meilisearch, WebSockets and third-party/payment integrations. I can handle everything from custom backend development and database design to admin panels, dashboards, API development and frontend implementation. ❇️ Mobile + Backend I also work with React Native and Flutter, building mobile products connected to custom APIs and backend systems. This includes booking applications, offline-first products, real-time features, maps, enterprise applications, payment integrations and App Store / Google Play deployment. Development & Infrastructure I work with Docker, Nginx, Traefik, GitLab CI/CD, WebSockets, background jobs and cloud infrastructure, with a focus on reliable production systems, performance and long-term maintainability. Core technologies: AI: OpenAI, Gemini, Grok, AI Agents, RAG, Machine Learning, NLP, Computer Vision, CLIP, PyTorch, Qdrant, pgvector, DSPy, LangSmith Backend: Python, FastAPI, PHP, Laravel, PostgreSQL, MySQL, Redis, RabbitMQ, Elasticsearch, Meilisearch, REST API, GraphQL, WebSockets Frontend: React, Next.js, Vue.js, Nuxt.js, JavaScript, TypeScript, HTML, Tailwind CSS, Vite, Webpack Infrastructure: Docker, Nginx, Traefik, GitLab CI/CD If you’re building an AI product, adding AI to an existing SaaS, or need an AI developer, AI agent builder, Python AI developer or AI integration specialist who can handle the full stack, feel free to message me. 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝘁𝗼𝗱𝗮𝘆. 𝗪𝗿𝗶𝘁𝗲 𝗺𝗲 𝗵𝗲𝗿𝗲 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 - 𝗜 𝘂𝘀𝘂𝗮𝗹𝗹𝘆 𝗿𝗲𝗽𝗹𝘆 𝘄𝗶𝘁𝗵𝗶𝗻 𝟯𝟬 𝗺𝗶𝗻𝘂𝘁𝗲𝘀.

I'am a multi-skilled, reliable Flutter developer with over 7 years of experience in IT segment, worked on a lot of projects like Compassly, Air Astana HRM & CRM etc. A quick learner who can absorb new ideas & can communicate clearly & effectively with people from all social & professional backgrounds. Well mannered, articulate & fully aware of diversity & multicultural issues. I have 3 year working experience as a freelance translator in Beijing. Also, quite experienced in using programmes like Photoshop, Maya, 3ds Max, Blender, etc.

Hi, I am a Mobile application Developer offering services for Android and IOS for 8+ years. I am here to develop your apps according to your requirements. Whether you're building a native Android app or a cross-platform product with shared logic, I can help you ship robust, production-ready solutions faster. 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - iOS: Swift, Objective-C - Android: Java, Kotlin - Cross-platform: Flutter