I am a well-rounded software engineering expert with two decades of experience and a strong focus in the areas of mobile apps development, data analytics and business intelligence, and artificial intelligence (AI). Software engineering/development is what I like and I do it very well. I am a hands-on individual. I have also worked as a consultant, an architect, and a trainer, so a more conceptual level of engagements involving CxO and non-tech stakeholders is something I have been formally trained for and I've done a lot. As a developer, architect and a consultant I have hundreds of successfully completed projects under my career belt. Many of these you may see in my Upwork profile. Roughly, my skillset covers these areas: - software development/engineering; - applications design and architecture; - troubleshooting, root cause analysis, and bug fixing; - operations support; - requirements analysis; - AI solutions using Azure and Microsoft Foundry and related services. My major areas of expertise are: - Artificial Intelligence (AI) and Machine Learning (ML) solutions; - software development for a wide range of platforms, including but not limited to Microsoft ecosystem, Apple devices, web and cross-platform apps and services; - cloud platforms - Azure, CGP, AWS; - data modeling, data warehouses, analytical databases (cubes), ETL, data engineering; - Business Intelligence with a strong focus on MS BI (MSSQL, SSIS, ADF, etc) and Power BI; - Office 365 (O365). I can write clear and efficient code in a wide variety of programming and scripting languages. I have excellent communication skills and unique cross-discipline experience. I hold a number of certifications from Microsoft, CompTIA and I am also a PMI-certified professional. I will be glad to help you with your next software project. Feel free to reach out to me to discuss or invite me to your job.

I’m a senior mobile and web developer with 14+ years of experience delivering high-quality, scalable apps across iOS, Android, and web platforms. I’ve worked with startups, agencies, and enterprise clients—leading everything from architecture and UI design to production deployment. On iOS, I bring top-notch expertise in SwiftUI, along with a solid foundation in UIKit, Core Data, and system-level integrations. I also use AI-assisted development workflows to boost productivity, reduce bugs, and optimize delivery speed. Key Skills & Experience: • iOS Development (SwiftUI, Swift, Objective-C, Core Data, Firebase, Parse) • Android Development (Java, Firebase, Parse SDK) • Web Backend (Node.js, Express, MongoDB) • AI-Driven Programming & Debugging • SDK & Framework Development • Performance Optimization & Architecture Audits • App Store Submission & Review Handling If you’re looking for someone who blends deep technical skills with AI-enhanced efficiency, I’d be happy to connect.

iOS Developer and Founder of Maptur, a real-time motion capture platform that turns iPhones into 6DoF tracking devices for Blender. I build creative production tools that bridge hardware and software, shipping Swift and SwiftUI apps with ARKit, CoreMotion, and low-latency network streaming alongside Python add-ons for 3D workflows. 4+ years in advertising and media production across Medical, Tech, Automotive, Fashion, and VFX gave me a sharp eye for workflow problems worth solving. That experience now drives how I approach product development: lightweight tools, real pipelines, creator-first design. Background in live production systems (ATEM), studio networking, server infrastructure, and electronics design. I'm most at home where real-time data, hardware constraints, and polished UX collide. Currently shipping Maptur on the App Store. Open to iOS and creative tools roles.

I'm experienced mobile developer. I use Flutter and MAUI frameworks. I have good understanding of modern mobile applications trends, you can check my portfolio. I always prefer establish good communication level with customers to provide exactly what they need and adapt fast to changing requirements. I'm confident, self-motivated and result-oriented person who can work under minimal observation. I can work both efficiently as team player and as individual. I've built and managed projects for individuals and startups. Business logic, API, database layers are in core project(.net standard library), platform projects are only for data showing and some platforms specific features with native UI and UX guidelines. Xamarin utilizes C# as its key programming language. This enables more than 70% of the code to be reused between iOS, Android and other platforms. An app built with Xamarin offers the same level of performance as that of a natively developed app. Expertise: ✅ 13 years experience in software development and more than 6 years in mobile development. ✅ Languages: C#, Objective-C, Swift, Java ✅ Strong knowledge in Android and iOS SDKs. ✅ ASP.NET, Web.Api, WCF, Windows Services, WinForms, WPF ✅ MSSQL, Oracle PL/SQL ✅ Binding Java(.aar) and Objective-C or Swift libraries(CocoaPods) ✅ Native mobile app development for iPhone, iPad, Android phone and tablet ✅ Creating complex UI iOS(Storyboard, .xib or AutoLayout), Android(xml) ✅ Database: SQLite, Realm ✅ Razor cshtml templates ✅ Communication: REST(HttpClient), WebSocket(websocket-sharp, SignalR) ✅ Social network integration: Facebook, Twitter, Instagram, VKontakte, Google+, etc ✅ Barcode scanning(Firebase, ZXing) ✅ Chatting protocol: XMPP(eJabber), Meteor(rocket.chat) ✅ Map integration: Google Maps(iOS, Android), MapKit(iOS), OpenStreetMap(Android) ✅ Payment services: In-App Purchase, Stripe ✅ AdMob (Banner, Full screen, Video) ✅ Analytics services: Google Analytics, Firebase Analytics, AppCenter, AppsFlyer ✅ CI/CD & Crash Reporting: AppCenter, Azure DevOps ✅ iOS, Android Linker(link all), proguard, r8 ✅ Distribution: Apple Store, Google Play ✅ Design Tools: Sketch, Zeplin, XD

I help startup founders and established businesses launch high-quality iOS, Android, Web, and cross-platform apps fast. As a senior mobile developer, I’ve shipped dozens of apps using SwiftUI, React Native, React Web, Kotlin, Unity, Firebase, AWS, and Azure, including an AR app for NASA’s Visitor Center at Goddard. Whether you’re building an MVP, adding features, or integrating with cloud services, I bring solo execution and clean delivery. No bloated teams. No hand-holding required. Recent and notable work: • NASA: Unity-based AR app for iOS and Android • iOS startups: Social and animation-sharing apps • AI integrations: OpenAI, Hugging Face, RAG, and API workflows • React Web apps with backend integrations • AR/VR product visualization tools • Firebase Functions and Azure cloud apps • Published apps on App Store and Google Play Clients hire me for: • Full app builds from scratch • Debugging and scaling existing codebases • Fast turnaround on scoped deliverables U.S.-based | Rutgers CS graduate (4.0 GPA) | Available for hourly or fixed-scope work

I build apps for iOS, macOS, and web that combine modern UI design with solid functionality. As a two-time recipient of Apple WWDC Swift award, I've had the opportunity to learn from Apple's lead engineers at Apple Park, bringing that expertise to every project. Specialising in SwiftUI development, I work closely with clients to bring their ideas to life. From design and development to launch and marketing, I'm able to assist in every phase to deliver a polished app ready for the App Store. I also build responsive websites and web applications for businesses. Using modern frameworks, I create fast, user-friendly sites that look great on any device to help your business grow online. What I build: • Native iOS/macOS app development with SwiftUI and UIKit • Full-stack web apps with modern design and functionality • Clean, well-documented code with fast turnaround Whether you need an iOS app or website, I deliver quality work on time with clear communication throughout.

Welcome to my UpWork profile! I've dedicated my entire life to becoming amazing at making games and apps, and I am ready to help with your project!.. I am ex-Rockstar, I worked as a coder on GTA Vice City, so I know a thing or two about making great games!.. But don't forget the apps, I have over 150M downloads of my apps, maybe you have seen PicCollage? A program which grew from a sunday evening project in my spare time to over 150M downloads, check it out on google play. I have been freelancing in software since the mid 90's (not a fan of offices!) and have delivered products to over 100 clients. I absolutely live for coding cool things. Worried about no reviews here? Check my people per hour account under the same name, I have 19 reviews all at 5 star (trust me that is not easy, I was ranked 25th in the world there at one point and have ranked in top 5 on toptal). The money was always better there and I find very few responses on upwork for some reason, but I am here trying anyway! That and my portfolio should demonstrate that I am a reliable, remote fullstack developer who delivers products all over the world. I enjoy doing so and my clients are always happy, see my testimonals on my portfolio site. I live and breathe coding, and I love getting stuck into a project, especially if it tickles that sweet spot where I consider the work fun, exponential gains to be had (usually game type projects). So why Upwork? The job market for programmers is in turmoil at the moment with the AI bubble, many of us are scrambling to upwork to find something, anything. So I have lowered my hourly rate from 70 to 60us. So now is a good time to strike, plus price can be discussed later. So why wait, jump in now let's build your dream project!.. If you are interested in making a game see my profile, there is a section called Unity Work with many videos of completed projects. If you are after an app see the section on Android/iPhone work, many many finished and awesome apps in there. Each section of my profile here also links to a dedicated website showing further projects. Thanks! Gaz (UK remote freelance game and app developer). Keep reading if you would like to know more about how I got here!.. Gareth Murfin. Professional App & Game Developer from UK I have been developing apps, games and websites for almost 30 years. Main experience includes over 15 years of Java, Android, Unity, C#. I also have experience in Kotlin, Flutter and more. While freelancing I have worked on many big apps such as CBBC Buzz, Royal Ascot, Alton Towers, PicCollage (over 100M downloads), Vodafone Mclaren Mercedes and many more. In house I have worked at Rockstar Studios on the GTA games and DC Studios on mobile titles like Ice Age. I have spent time as a full time software engineer for British Telecom. I hold a BSc and MSc in Computing Science (Stirling University) and have many accolades in software and game development, including Young UK Software Engineer Of The Year in 2001. These days I specialise in C# (.net, blazor, winforms etc), and Unity. I am very interested in developing desktop apps, mobile apps, websites, and games (including VR, AR). I am a passionate programmer who can easily work alone or in a team and get the job done efficiently using clean, modern code. I have released many apps on the various stores and developed games which are licensed by Nintendo. I have knowledge of virtually all levels of software engineering, including backend, interacting with APIs, databases, UI design etc. Please consider me for this role, I will do my best to succeed wherever I am placed, and I take pride in being a master of code. All of my work is documented on my website, but for now see "Unity Work" and "Android/iPhone apps" on my profile (links are just below). Thanks for reading, let's do this!.. Gaz.

I built Flowasis solo from scratch, a real-time options flow and market intelligence app shipped to iOS, Android, and web. React Native frontend, 60+ AWS Lambda functions, DynamoDB, Redis, real-time data pipelines, and an LLM assistant with tool-calling. It's in production. I built all of it. I also build OpenClaw-powered AI agents, automation workflows that connect Claude AI to external tools, APIs, and messaging systems. If you need someone to wire up AI assistants, LLM tool-calling, or agent automation into your product, I've already done it. I own projects end-to-end. I ship fast. I don't need hand-holding. If you want a developer who treats your project like their own business, that's exactly how I work. Stack: React Native, TypeScript, Node.js, AWS (Lambda, DynamoDB, API Gateway, ECS, Redis), LLM/AI integration, OpenClaw agent automation

I build production-grade iOS and Android apps for clients who need polish, reliability, and a developer who ships. 5+ years, 14 deployed apps, full-stack mobile, native + cross-platform. My team and I design, build, and launch mobile apps across: - Native iOS (Swift, SwiftUI) - Native Android (Kotlin) - Cross-platform (Flutter, React Native) - Backend & cloud (Node.js, Firebase, AWS/EC2, REST APIs) - Payments & marketplaces (Stripe, provider payouts, dual-sided platforms) - AI integration (OpenAI API, GPT-powered features in mobile apps) - Hardware & connectivity (Bluetooth LE) - Health & fitness apps (workout tracking, coaching platforms, content programs) What I bring: - A working app on the App Store and Google Play — not a half-built prototype - Clean, maintainable architecture any future developer can pick up and extend - Honest communication: if your budget and scope don't match, I'll tell you up front and help you choose - US-based project management, so you get one point of contact who speaks your language and your timezone How I work: I'm the founder of a small US-based studio. I run your project personally — architecture, scoping, UX, QA, release — and draw on a hand-picked team of developers, designers, and QA engineers for execution. That gives you the oversight and communication of a US contractor with the cost profile of a global team. Typical projects: Marketplace and on-demand apps · health, fitness, and wellness apps · AI-powered mobile products · apps with hardware or payment integrations · greenfield builds from idea to launch · rescue or cleanup of existing mobile codebases. If you have an idea you want built right — or an app that's stuck and needs someone to unstick it — let's talk.

I'm a senior software engineer with extensive experience building scalable APIs, cloud platforms, and mobile applications used by billions of users. I’ve worked on production systems at companies like Meta Platforms and T-Mobile, and I bring that same engineering discipline and reliability to every client project. Throughout my career I’ve designed and built backend systems, microservices, and mobile applications that power real products. I specialize in building software that is not only functional but also scalable, maintainable, and ready for long-term growth. In addition to enterprise experience, I’ve also worked extensively with startups and small teams, helping them move quickly from concept to working software. I understand the balance between moving fast and building systems that won’t break as your product grows. Whether you're launching a new product, building an MVP, integrating APIs, or improving an existing platform, I focus on delivering solutions that are reliable, efficient, and designed with best engineering practices. What I Can Help You Build Backend & API Development • REST APIs and microservices • Backend platforms and system architecture • Secure authentication systems (OAuth, Cognito, etc.) • Third-party API integrations • High-performance backend services Cloud & Infrastructure • AWS architecture and deployment • Serverless systems (Lambda, event-driven systems) • Scalable cloud platforms • Database design and optimization • DevOps and deployment pipelines Mobile Applications • Cross-platform mobile apps using Flutter • API integration for mobile apps • Authentication, file uploads, and backend communication • Performance optimization and debugging Technologies I Work With Python • C# • Flutter • REST APIs • AWS • Serverless • PostgreSQL • MongoDB • Microservices • Cloud Architecture • Docker • Event-Driven Systems Recent Types of Projects • Designing backend APIs that support mobile applications • Building serverless cloud systems on AWS • Creating MVP platforms for startups • Integrating complex third-party APIs • Optimizing backend performance and reliability • Debugging and stabilizing production systems Why Clients Work With Me Clients hire me because I bring both enterprise engineering experience and startup speed. I understand how to quickly identify the core problem and deliver solutions that work in production. You can expect: • Clear and professional communication • Clean, maintainable code • Thoughtful system design • Reliable delivery and follow-through I treat every project like a product that will need to scale and evolve over time, not just a quick patch or temporary solution. Education Master’s Degree – Computer Science Bachelor’s Degree – Computer Science If you're looking for an experienced engineer who can help you build, scale, or improve your software, I'd be happy to learn more about your project.