🎯 Top 1% on Upwork with 💯% Job Success 🤝 200+ Happy Clients with over 👨‍💻 20 Years of Experience ✅ Native English with ⏰ 4,000+ Hours 𝐈 𝐝𝐞𝐬𝐢𝐠𝐧 𝐚𝐧𝐝 𝐛𝐮𝐢𝐥𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬—𝐟𝐫𝐨𝐦 𝐢𝐝𝐞𝐚 𝐭𝐨 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧. If you're looking to move beyond basic development and build something technically strong, future-ready, and architecturally sound, I can help. 𝐎𝐯𝐞𝐫 𝐭𝐡𝐞 𝐩𝐚𝐬𝐭 𝐟𝐞𝐰 𝐲𝐞𝐚𝐫𝐬, 𝐈’𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐚𝐜𝐫𝐨𝐬𝐬: - AI-powered applications (computer vision, ML integrations, LLM workflows) - Mobile & Web platforms (React, Flutter, scalable backends) - SaaS products (multi-tenant architecture, subscription systems, growth-ready infra) - API & system architecture (high-performance, modular, developer-friendly systems) 💡 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐫𝐢𝐧𝐠 𝐌𝐨𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐰𝐫𝐢𝐭𝐞 𝐜𝐨𝐝𝐞. 𝐈 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐛𝐮𝐢𝐥𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐭𝐡𝐚𝐭 𝐥𝐚𝐬𝐭. - AI-first thinking → Not just adding AI, but embedding it meaningfully into products - Architecture-led development → Clean, scalable, cost-efficient systems - Speed with clarity → Rapid execution without messy tech debt - Product mindset → I think like a founder, not just a freelancer ⚙️ 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐀𝐈 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 - LLM integrations (OpenAI, custom workflows) - Computer Vision (skin, image analysis, automation) - AI copilots & recommendation engines 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 - Python (FastAPI, Django) - Node.js systems - REST / GraphQL APIs - Microservices & modular architectures 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 - Swift, Kotlin - Flutter, React Native - React.js (scalable frontend systems) - Performance-focused builds 𝐒𝐚𝐚𝐒 & 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 - Multi-tenant systems - Subscription & billing integrations - Admin dashboards & analytics - Cloud (AWS, GCP) 🚀 𝐓𝐲𝐩𝐞𝐬 𝐨𝐟 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐈 𝐖𝐨𝐫𝐤 𝐎𝐧 - AI-powered apps (health, fintech, productivity) - SaaS platforms (B2B / B2C) - Mobile-first startups - MVP to scale transitions - System re-architecture & performance fixes 📈 𝐑𝐞𝐜𝐞𝐧𝐭 𝐖𝐨𝐫𝐤 (𝐎𝐩𝐭𝐢𝐨𝐧𝐚𝐥 𝐒𝐞𝐜𝐭𝐢𝐨𝐧 – 𝐜𝐮𝐬𝐭𝐨𝐦𝐢𝐳𝐞 𝐥𝐚𝐭𝐞𝐫) - Built an AI dermatology platform (mobile + backend + ML integration) - Designed scalable API systems handling real-time data workflows - Helped startups go from idea → MVP → funded product 🧠 𝐌𝐲 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡 - Understand the business (not just requirements) - Design the right architecture - Build fast, but clean - Keep scalability in mind from day one 🤝 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐁𝐞𝐬𝐭 𝐖𝐢𝐭𝐡 - Founders building serious products - Startups that want to scale (not just experiment) - Teams that value quality + speed + thinking If you're building something ambitious and want it done right, 𝐏.𝐒. 𝐋𝐞𝐭’𝐬 𝐛𝐨𝐨𝐤 𝐚 𝐜𝐚𝐥𝐥 ☎️

🚀 Top-Rated and Expert-Vetted Senior iOS Developer with 10 Years of Mobile Expertise 📱 Are you in need of a seasoned iOS developer with a wealth of experience and a proven track record in building top-notch mobile apps? Look no further! I'm here to enhance your projects and take them to new heights. ✨ Why You Should Collaborate with Me: 📚 Master's Degree in Computer Science: My deep academic background ensures a strong foundation in software engineering principles, empowering me to craft efficient, high-quality code. 🤝 Proactive and Detail-Oriented: I bring a proactive mindset and keen attention to detail to every project, delivering not just solutions but polished products that shine. 🌍 Global Experience: I've partnered with startups worldwide, from the USA and UK to The Netherlands. This international exposure has enriched my skill set and allows me to bring diverse perspectives to your projects. 📱 Full-Stack Expertise: I specialize in developing native iOS apps using Swift, creating elegant and intuitive user interfaces and experiences. From ground-up builds to enhancing existing apps, I do it all. 🤖 Collaborative Cross-Functional Work: I thrive in cross-functional teams, collaborating seamlessly with product owners, designers, mobile developers, and backend experts to create holistic solutions. 🧩 Strong Problem-Solving Skills: Complex challenges don't deter me; I embrace them with analytical prowess and innovative thinking. 🏆 Recent Achievements: 🌟 I spearheaded the development of an e-commerce app for an Amsterdam startup that raised a staggering $120 million. 🌟 Another success story is a second phone number app, delivering calls and messaging features. Ready to take your projects to the next level, I'm excited to work with you and your team. Let's build the future together! 📈💼📱 ⚙️ Tools and Skills: 🛠️ Development Tools: Xcode Swift SwiftUI RxSwift Combine Apollo GraphQL Jira Confluence Git SwiftLint SwiftGen Dependency Injection 🎨 UI/UX Design: Figma Sketch Interface Builder Storyboards SwiftUI Preview Lottie 🧩 Frameworks and Libraries: Alamofire Moya Facebook SDK Algolia Iterable RevenueCat Twilio Stripe Realm Stream Chat One Signal Kingfisher 📱UI: UIKit Foundation SnapKit 📊 Analytics: Segment Firebase Google Analytics Mixpanel Amplitude Rollbar Crashlytics 🐞 Debugging and Testing: XCTest XCUITest Quick Nimble SwiftyMocky Embassy EnvoyAmbassador RxBlocking 🏛️ Architecture: Multi-modular, MV MVC MVP MVVM VIPER 📋 Methodologies: Agile Scrum Kanban 🚀 CI: Bitrise Jenkins

Senior independent iOS / Apple-platform engineer with 10+ years shipping for product teams across operations platforms, healthcare, fintech, media, and B2B SaaS. I partner with founders of B2B operations platforms — equestrian, fitness, healthcare, last-mile logistics, automotive — on multi-month engagements. Not single-feature gigs. Currently in 2-year partnership with a B2B operations platform in the equestrian industry: shipped v1 → seed round closed, architected v2 multi-app ecosystem (barn operations, pro tools, end-user app, payments, orders, billing) → next round in progress. ═══════════════════════════════════════════ FOCUS INDUSTRIES ═══════════════════════════════════════════ ▸ Equestrian operations ▸ Fitness facility operations ▸ Healthcare operations ▸ Last-mile logistics ▸ Automotive services Adjacent operations-tech (case-by-case): agtech, field service, construction tech, hospitality ops, mobile professionals. The common thread: software where digital meets physical, and mobile is mission-critical for operators in the field — drivers, technicians, trainers, practitioners, field workers. ═══════════════════════════════════════════ WHAT I DO ═══════════════════════════════════════════ → Lead end-to-end iOS / Apple-platform delivery for B2B operations platforms (typically post-Series A, $1-15M raised) → Architect multi-app ecosystems (operator + admin + end-user apps) that survive 3+ years of iteration — not just MVP-grade → Embed as fractional CTO when founders need senior Apple judgement without hiring full-time → Audit existing iOS codebases before fundraising rounds or major hires ═══════════════════════════════════════════ WHAT I DON'T DO ═══════════════════════════════════════════ → Single-feature gigs under $3k or 2-week sprints → MVP-from-scratch for non-funded ideas → Cross-platform (React Native, Flutter) — I work native iOS → White-label "rent my GitHub stats" arrangements ═══════════════════════════════════════════ ENGAGEMENT MODES ═══════════════════════════════════════════ ▸ PROJECT PARTNERSHIP (3-9 months) Lead engineer for full delivery cycle. When scope demands more hands, I assemble small senior teams from a network of senior contractors I've worked with for years. ▸ FRACTIONAL CTO RETAINER (6-18 months) 1-3 days/week embedded with founder. Architecture, hiring, code reviews, technical strategy, investor-readiness on the technical side. ▸ ADVISORY DIAGNOSTIC (1-2 weeks) Codebase audit, architecture review, build-vs-buy assessment. Often the start of something longer. ═══════════════════════════════════════════ TECHNICAL STACK ═══════════════════════════════════════════ Apple platforms: iOS, iPadOS, macOS, watchOS, tvOS, CarPlay, Vision Pro Languages: Swift, Objective-C UI: SwiftUI, UIKit Concurrency: async/await, Combine, GCD Architecture: MVVM, Clean Architecture, Coordinators Backend: Supabase, REST/GraphQL APIs Operations-tech: Offline-first sync, GPS/routing, payments, scheduling, multi-app ecosystems Tooling: Xcode, Git, CI/CD (GitHub Actions, Xcode Could, Fastlane, Bitrise), TestFlight, App Store Connect ═══════════════════════════════════════════ Available for 3+ month engagements. If you're a founder of a B2B operations platform thinking about scaling your iOS / Apple-platform side — let's talk.

I build high-performance iOS apps that drive real business impact. As a Top Rated Plus freelancer with a proven track record, I specialize in native Swift development, emerging AI/LLM integrations, and immersive AR experiences. With $200+ earned on Upwork and 93% client recommendation rate, I've consistently delivered cutting-edge solutions for clients across fintech, sports, education, and enterprise sectors. Core expertise: Native iOS development: Swift, SwiftUI, UIKit, Combine, RxSwift AI integration: LLM APIs, RAG (Retrieval-Augmented Generation), prompt engineering Advanced AR/3D: ARKit, 3D avatar rigging in Blender, model optimization & import Backend integration: REST APIs, GraphQL, Firebase, secure authentication Performance optimization: 98% crash-free rates, 25% UX improvements Why work with me: Hyper-responsive – Available M-F business hours with rapid turnarounds Ownership mindset – I treat your app like my own, ensuring production-grade quality Future-ready tech stack – Experienced with the latest frameworks (SwiftUI, LLMs, ARKit) Proven results – 100% job success score over 18+ months, top 5% performer Let's build something exceptional together. Reach out with your iOS project details, and I'll provide a transparent assessment and timeline within 24 hours.

15+ years. Dozens of products shipped. One consistent focus is building systems that don't break when your business grows. If you're a founder or product team looking for a technical lead who can guide decisions, not just execute tasks, that's exactly what I do. I work with startups, scale-ups, and established businesses to take ideas from early concept through to stable, scalable products. Whether that's an MVP you need to validate quickly, a mobile app ready for real users, or a SaaS platform built to grow, I stay closely involved on the technical side while keeping the broader product direction on track. 𝗪𝗵𝗮𝘁 𝗺𝗮𝗸𝗲𝘀 𝘁𝗵𝗶𝘀 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 Most developers will build what you ask for. My job is to make sure what we build is the right thing and that it won't need a full rebuild when your user base grows or your requirements change. That means asking the right questions early, flagging trade-offs before they become expensive problems, and making sure every technical decision connects back to your business goals. 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 • Mobile Applications — iOS, Android & Cross-Platform • Full-Stack Web Applications & SaaS Platforms • MVP Builds from idea to working product, fast • API Development & Third-Party Integrations • Backend Architecture built for scale • Technical Strategy & Product Planning for founders 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜'𝘃𝗲 𝘄𝗼𝗿𝗸𝗲𝗱 𝗶𝗻 Healthcare & Mental Wellness · Fitness & Sports · Real Estate · Freight & Logistics · Education & E-Learning · Food & Beverage · Financial Services · Social & Community Platforms Each of these industries comes with its own operational and technical challenges. Having worked across all of them means I can move faster, ask better questions, and avoid the mistakes that slow teams down. 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 I value long-term collaboration over quick handoffs. Many of the clients I've worked with have stayed through multiple development stages, because when a team understands your product deeply, the work gets better and faster over time. My working style is direct and transparent. You'll always know where things stand, what decisions are coming, and why I'm recommending what I am. No technical jargon for its own sake, just clear communication that keeps the project moving. Where projects require it, I work with a trusted team of developers I have built and managed over the years. Every team member works under my direct supervision, and I remain the primary technical lead and client point of contact throughout. This means you get the reliability of working with a senior lead alongside the delivery capacity of a full team. 𝗔𝗜-𝗔𝘀𝘀𝗶𝘀𝘁𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I use AI tools like Claude as part of my development workflow. Not as a shortcut, but as a way to move faster without cutting corners. In practice, that means using AI to accelerate repetitive groundwork, explore approaches quickly, and pressure-test logic, while every piece of code that goes into a production system is reviewed, understood, and validated by me before it ships. I don't copy code blindly. AI handles speed. Experience handles judgment. The combination means you get faster delivery without the hidden technical debt that comes from unreviewed, auto-generated code. 𝗟𝗲𝘁'𝘀 𝘁𝗮𝗹𝗸 𝗮𝗯𝗼𝘂𝘁 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 If you're building any of the following, I'd like to hear about it: • A mobile app: iOS, Android, or cross-platform • A SaaS product or startup MVP • A scalable web application or backend system • A platform that's grown beyond its original architecture Send me a short brief describing what you're building and where you're stuck. I'll review it and come back with honest thoughts on approach, timeline, and what to watch out for.

Experienced Software Engineer | Mobile, Mac Desktop, and Web Development Welcome to my page! With extensive experience in iOS, macOS, watchOS, Android, and web development, I specialize in designing and building high-quality applications that meet business goals and exceed user expectations. What You Can Expect When Working With Me: ✔ High-quality, scalable, and efficient applications – professionally built for long-term success. ✔ App Store and Play Store compliance – ensuring smooth approvals and avoiding rejections. ✔ Effective collaboration and project management – experienced in Jira, Trello, Git, and Agile workflows. ✔ Reliable communication and support – responsive at any time to provide timely solutions. ✔ Continuous learning and innovation – always exploring new technologies to enhance project outcomes. My passion is to create impactful apps and websites that gain recognition while helping clients achieve their goals. I am constantly refining my skills, exploring new trends, and optimizing my development process to deliver the best results. Let’s build something great together! Looking forward to collaborating. Best regards, Leo

🚀 Senior Software Engineer | Team Leader | iOS, macOS, visionOS, watchOS | Swift, Objective-C, C++ | AR, AI 🔹 11+ Years of Experience | Master's in AI & Bachelor's in CS | PhD Researcher in Applied Linguistics Passionate software engineer with 11+ years of professional experience in developing high-quality applications for iOS, macOS, visionOS, Windows, and Linux. I specialize in Swift, C, C++, Objective-C, Objective-C++, and Rust programming languages building efficient, scalable, and maintainable solutions. Holding a Master’s degree in Artificial Intelligence and currently pursuing a PhD in Applied Linguistics, where I research OCR for handwritten texts, I bring a unique combination of AI, NLP, and software engineering expertise to projects involving text recognition and automation. 🛠 Tech Stack & Expertise 🔹 Programming Languages 💻 Swift | Objective-C | Objective-C++ | C++ | C | Rust 🔹 Development Tools 🔧 Xcode | Instruments | Terminal | Qt Creator | MS Visual Studio | VS Code 🔹 Architectures & Design Patterns 📐 MVC | MVVM | MVVM+Coordinator | VIPER | TCA | UDF 🔹 iOS/macOS Frameworks & Technologies 📱 UIKit | SwiftUI | Combine | Observation | AVFoundation | CoreFoundation | CoreGraphics | CoreData | CoreBluetooth | CoreLocation | MapKit | PushKit | CallKit | WidgetKit | XCTest | SPM 🔗 Third-party: Realm | RxSwift | SQLite | Alamofire | WebRTC | Twilio | Vonage | Firebase | AWS | Stripe | Google Maps | MapBox | Cocoapods | CarPlay | SiriKit 🔹 Networking & Communication 🌐 TCP/IP | OSI | REST API | GraphQL | WebSockets | VOIP | WebRTC 🔹 Databases & Storage 🗄 MySQL | SQLite | CoreData | SwiftData | Realm 🔹 C++ Libraries ⚙ Qt | Boost | STL 🔹 Scripting & Automation 📜 Bash | Fastlane 🔹 Operating Systems 📂 iOS | macOS | visionOS | watchOS | Android | Windows | Linux (Ubuntu, CentOS) 🔹 CI/CD & Version Control 🔄 Git | GitFlow | SVN | Jenkins | TestFlight | Fastlane | CircleCI | Github actions 🔹 Project Management & Collaboration 📌 JIRA | Trello | Redmine 🔹 UML & Software Design 📊 UML diagrams for system architecture 🔹 Languages 🗣 Ukrainian (Native) | English (Fluent, C1 - CAE Certified) I’m excited to collaborate on challenging projects and build innovative software solutions. Let’s discuss how I can help bring your vision to life! 💬 Let’s Connect!

🎖️ 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.

I've been working as a lead developer for 20 years. Have strong skills in all modern web technologies - top 10% in all corresponding Upwork tests. Looking for challenging long-term contracts. Understand critical deadlines and specialize in saving employers' ****s (I mean reputations).

✔️ 19+ years of Software Development background ✔️ 10+ years of Mobile Application & Web Development Experience ✔️ Passionate about turning technical innovation into revenue and user impact. My Technical Skill Sets: - Mobile: Swift/SwiftUI, Kotlin/Java, Flutter and React native for cross-platform - Web: Node.js, React.js, ASP, Vue.js, Next, Typescript, Python(Django), Codeigniter, Laravel, JavaScript, CSS, HTML, PHP - Firebase, Amazon Web Services, Godaddy, Crashlytics Shopify: - Shopify Online Store 2.0 - Shopify Theme Development - Shopify Liquid - Shopify CLI - Shopify Hydrogen - Shopify Storefront API - Shopify GraphQL API - Shopify App Development My Delivery: - deploy web to your own hosting - CI/CD with Git repo - submit MVP to App Store Connect for testing via TestFlight - *.apk file for Android version - bug-free full source code - Documentation for the project - 3 months free support Always trying to learn new concepts and development language / to use up-to-date technology Like to maintain long term business affairs with clients. Best regards, Anton. NOTE: I am open to collaborating with you on meaningful and valuable projects.