I am a Unity Developer and Unreal Engine Developer with more than 10 years of professional experience in full-cycle game and application development. Over the past decade, I’ve worked as a Unity Developer and Unreal Engine Developer on commercial games, mobile apps, VR experiences, and interactive products used by players and businesses worldwide. My background as a Game Developer allows me to approach every project not only from a technical angle, but also from the perspective of gameplay, performance, and long-term scalability. As a Unity Developer, I specialize in Unity game development for mobile, VR, and cross-platform projects. I’ve worked extensively as a Unity Game Developer and Unity mobile game developer, building polished mobile games for iOS and Android, as well as immersive VR experiences. At the same time, I’m an experienced Unreal Engine Developer and Unreal Engine game developer, delivering high-quality visuals, optimized performance, and complex gameplay systems using Unreal Engine. Throughout my career, I’ve repeatedly taken the role of Game Developer, Unity Game Developer, and AR VR Developer, often combining all three in a single project. As a Game Developer, I actively participate in game design, core mechanics, progression systems, and user experience. As a Unity Game Developer, I focus on Unity C# architecture, clean code, debugging, and optimization. As an AR VR Developer, I build interactive solutions using virtual reality and augmented reality technologies, including Oculus-based VR applications and mobile AR experiences. I have strong expertise as a VR Developer, Unity VR Developer, and VR app developer, working with virtual reality projects in gaming, training, and metaverse-style environments. I’ve also delivered projects as an AR VR Developer using augmented reality concepts for mobile and interactive apps. My experience as a metaverse developer includes real-time multiplayer systems, avatar interaction, and immersive 3D worlds built with Unity and Unreal Engine. Beyond games, I’ve worked as a mobile developer, mobile app developer, and mobile game developer, creating applications that combine gameplay elements with real business goals. I’ve shipped projects as an iOS game developer, Android developer, and cross-platform app developer, handling everything from architecture to publishing. I’ve also supported web-based experiences as a web game developer and web developer, integrating technologies like Three.js, HTML5, CSS, and JavaScript. My technical background includes solid experience as a full stack developer, with server logic, APIs, databases, and real-time networking. I’ve implemented multiplayer systems using Photon Unity Networking and designed scalable backends with Node.js and SQL. I’ve even collaborated on projects requiring a WordPress developer United States–style workflow, integrating Unity or Unreal content into web platforms. Creatively, I collaborate closely with game designers, 3D artists, and animators, and I often step into hybrid roles where game design meets technical execution. My projects regularly involve 3D animation, character systems, physics, and real-time rendering. I’ve worked with Unity3D, Unreal Engine, and modern pipelines that include Autodesk 3ds Max for modeling and animation support. From a skills perspective, my daily work revolves around Game Development using Unity C# and Unreal Engine with C++. I apply strong Game Design principles while building mobile games, VR applications, and video game experiences. I’ve developed for Android and iOS, delivered complete Mobile App Development solutions, and handled advanced Software Debugging for performance-critical projects. My technical toolkit includes Unity, Unreal Engine, Python, JavaScript, SQL, Node.js, and C#. I regularly work with Virtual Reality and Augmented Reality, including ARCore-based AR applications and full VR applications. I handle 3D Modeling, 3D Design, and 3D Animation, ensuring assets integrate smoothly into real-time engines. I also use Adobe Photoshop for UI, prototyping, and visual polish. Over the years, I’ve built games and apps for mobile, PC, VR headsets, and gaming consoles. Whether the project requires a senior Unity Developer, an experienced Unreal Engine Developer, a reliable Game Developer, or a hands-on AR VR Developer, I bring both technical depth and product thinking. I focus on clean architecture, stable performance, and results that help your project stand out in a competitive market. If you’re looking for a Unity Developer or Unreal Engine Developer who understands game development end-to-end, communicates clearly, and delivers production-ready solutions, I’d be glad to help turn your idea into a successful game or application.

A skilled software developer, on various platforms ranging from Windows to Linux to ARM and other embedded devices (AVR, PIC, etc). My preferred programming languages include, but are not limited to: - C/C++ - Java - Python - Rust - C# - Matlab I'm familiar with various open source libraries in different programming languages such as STL, Curl, Json, GTK, Swing, BeautifulSoup, Requests, Selenium, Tkinter, and many more... I've experience in Embedded Software using various microcontrollers (AVR, PIC, STM32, TM4C123, etc...). I've used many peripherals such as (GPIO, Timer, PWM, NVIC, RCC, FPEC, UART, SPI, I2C, CAN, ADC,...), interfaced it with many sensors and actuators. I've built many projects ranging from simple projects (blinking LEDs, motor control, calculator, stop watch, ...) to more advanced projects (Bootloader, Smart Home, Digital Clock, ...). I have a strong background about Algorithms and Data Structures such as: - Dynamic Programming - Backtracking - Graphs - DFS - BFS - MST - Heap - Trie - Balanced BSTs - Segment Trees - Disjoint Set - and many more... I've solved +370 DSA problems on HackerRank platform and got ranked 660 over 23 million developers in solving coding challenges. You can find my profile in the portfolio. My primary focus in writing software is performance, without sacrificing the safety and security of the application. I will do my best to discuss all the relevant details and the scope of the project with the client, so that I can form an idea of the finished product in order to be able to lay a better groundwork design for the project.

I’m a senior creative engineer specializing in JUCE/DSP, real-time 3D, Qt/HMI, AI systems, FFmpeg workflows, and full-stack product development. I build production-ready software across audio plugins, desktop apps, WebGL/XR experiences, AI-powered tools, and media-processing pipelines. My strength is combining strong engineering with design precision, so the final product is not only functional, but fast, polished, and easy to use. Core skills include: Audio/DSP: JUCE, C++23, VST3, AU, CLAP, FFmpeg, custom plugin GUIs 3D/XR: Three.js, WebGL, WebXR, Unity, OpenGL, Blender AI/ML: Python, PyTorch, OpenCV, RAG, FastAPI, automation workflows Full-Stack: Next.js, React, Electron, Node.js, Hono.js, Cloudflare, PostgreSQL, Docker I’m a good fit if you need a reliable technical partner for complex creative software, including audio tools, 3D viewers, AI applications, video-processing systems, or custom desktop/web platforms.

Hi, I’m Hammy — Founder of Dovemobi and an AI-powered SaaS, Marketplace, App & Game Developer with 10+ years of experience building scalable digital products for startups, founders, and businesses worldwide. I specialize in rapidly building and launching: • AI-powered SaaS platforms • Mobile apps (iOS & Android) • Marketplace systems • AI integrations & automations • Mobile games & game reskinning • Web platforms & internal business tools Using modern AI workflows with Claude, Cursor, Lovable & OpenAI, I help clients move from idea to launch significantly faster while maintaining production-quality architecture and scalable systems. What I help clients achieve: • Faster MVP launches • Reduced development cost • Better scalability & performance • Faster iteration & deployment • Improved monetization & UX Services I provide: • AI SaaS & MVP Development • Mobile App Development • Marketplace & Platform Development • AI Automation & API Integration • Mobile Game Development (Unity) • Game Reskinning & Publishing • Backend Systems & Payment Integration • Performance Optimization & Bug Fixing • App Store & Play Store Deployment I focus on building real, launch-ready products — not just prototypes. Whether you need an MVP, scalable SaaS platform, AI-powered system, mobile app, or game project, I’m ready to help bring your vision to life quickly and efficiently. Let’s build something great.

My name is Mieszko Mieruński, I have 12+ years of experience with Embedded Systems Ex-Nordic Semiconductor Employee Full Lab for building your device. IoT Expert Expert in rapid prototyping - from idea, through device design, firmware development to working prototype including PCB design/assembly. Recent projects include low power IoT solutions using nRF91 running Zephyr RTOS and AWS IoT services. In my career I've been working as firmware engineer as well as embedded product owner - giving me perspective of both worlds on how to build efficient devices and how to focus on business aspects of the device. For bigger projects I have my carefully picked team of engineers ready to take on hardest challenges. I'm also happy to provide consulting, to steer your product development in right direction as well as providing trainings on cutting-edge IoT technologies and methodologies. Let me know how can I assist your idea

✅Let's start with a quick consultation or a small initial milestone so you can see I'm the right fit. 🔥PROVEN BUSINESS IMPACT - 7+ Years of engineering and building enterprise-grade applications as a .NET developer in high-stakes environments. - ROI-Driven Development: $2.5M+ in verified client impact, leveraging my background as a full stack developer to increase revenue and reduce operational overhead through expert software development. - Performance Engineering: 90% faster data processing and 75% lower infrastructure costs achieved through advanced Microservices and optimization as a senior .NET developer proficient in ASP.NET Core. - Scalability & Growth: Scaled platforms to 30,000+ active users; consistently cut time-to-market for MVPs by 4–6 weeks by applying the expertise of a seasoned full stack developer. - Legacy Modernization: Proven track record as a .NET developer migrating legacy systems - including .NET Framework and .NET Compact Framework - to modern architectures, resulting in 40% fewer bugs. - Efficiency Gains: Reduced admin friction by 45% through custom-built automation, demonstrating the value a dedicated full-stack developer brings to complex SQL-driven workflows. 👨🏻‍💻THE PARTNERSHIP EXPERIENCE - Full-Stack Authority: Microsoft-certified expertise spanning the entire development lifecycle, from robust C# backend architecture to dynamic frontend interfaces. - Versatile Tech Lead: Whether you need a full stack developer for MVP creation, a .NET developer for enterprise scale, or a java developer for backend migration, I bridge the gap between technical requirements and business goals. I also offer the flexibility of a java developer for interoperability, and the analytical power of a python developer for data-heavy tasks. - Agile & Transparent: High-velocity delivery using JIRA/Asana, providing the clear, consistent communication expected from a senior full-stack developer. ⚙️ ENGINEERING CAPABILITIES - Backend Architecture: Building high-throughput systems with C#, ASP.NET Core, and ASP.NET Web API. I also offer the flexibility of a java developer to integrate with diverse existing ecosystems. - Modern Frontend: Crafting dynamic UI/UX using Angular, React, and JavaScript. My deep experience with HTML5, CSS 3, and Bootstrap ensures highly responsive, mobile-first designs. - Cloud & Infrastructure: End-to-end management of cloud-native ecosystems (Azure/AWS) and containerized deployment pipelines as a lead .NET developer. - Data & Performance: Advanced database design using Microsoft SQL Server and complex SQL queries to cut data latencies by up to 50%. - Cross-Functional Skills: I bring the architectural discipline of a .NET developer - including ASP.NET MVC and ASP.NET expertise - to every project, while also offering the modern tooling mindset of a full stack developer using Node.js. 🏆 DOMAIN SPECIALTIES - FinTech: Secure ledger systems and transaction management built by a specialized .NET developer. - Healthcare: HIPAA-compliant patient management portals and telehealth solutions. - LegalTech/Enterprise: Complex document workflows and granular RBAC. ⚒️ TECHNICAL TOOLSET - The .NET Stack: .NET Framework, .NET Compact Framework, ASP.NET Core, ASP.NET Web API, ASP.NET MVC, ASP.NET, C#. - Frontend Mastery: Angular, React, JavaScript, HTML5, CSS 3, Bootstrap, jQuery. - Data Layer: Microsoft SQL Server, SQL, Redis, MongoDB, ElasticSearch. - General Stack: Node.js, Python, Docker, CI/CD. - Engineering Standard: Clean Architecture, SOLID Principles, and an uncompromising focus on software development quality. 📩If you’re looking for a reliable and experienced .NET Developer and full stack development partner who understands both technology and business impact, I’d be happy to connect - feel free to invite me for an interview!

🎯 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 .𝐍𝐞𝐭 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 |.𝐍𝐞𝐭 𝐂𝐨𝐫𝐞 | |𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 |𝐍𝐨𝐝𝐞 𝐄𝐱𝐩𝐞𝐫𝐭🎯 ✅ Top-Rated on Upwork ✅ Software Development Expert ✅ 5+ years of experience in the industry ✅ Available Now 🌟 I’m a passionate .NET Developer with over 5+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞, 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐢𝐧𝐠 𝐢𝐧 .𝐍𝐄𝐓 𝐂#, 𝐗𝐚𝐦𝐚𝐫𝐢𝐧/𝐌𝐀𝐔𝐈, 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞, 𝐚𝐧𝐝 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. With a deep understanding of the .NET ecosystem, I create applications that go beyond code – I craft seamless, high-performance digital experiences that deliver real value. ✅ 𝐌𝐲 𝐏𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐢𝐞𝐬 𝐈𝐧𝐜𝐥𝐮𝐝𝐞: ⭐ C#, .Net, .NET Framework, .Net Core, ASP.Net, ASP.net Core, ASP.NET MVC, ASP.NET Web Forms, MVC with Razor Views, VB.NET ⭐ Node.js, Python, Express.js, Nest.js, Entity Framework, Entity Framework Core ⭐ WebForms, WinForms, WCF, WPF ⭐ React, React Native, Angular.js, Angular, 6,7,8,9,10, 12, 14 ⭐ Javascript, TypeScript, jQuery, HTML5, CSS3, SaaS, Tailwind CSS, Bootstrap ⭐ Figma, Sketch, Adobe XD, Photoshop, Illustrator ⭐Azure Services, Azure DevOps Services, Azure Pipelines, Active Directory, etc ⭐ GraphQL, SQL, MongoDB Query Language (MQL), React Query, Twilio ⭐ MySQL, MongoDB, PostgreSQL, Firebase, Supabase, Microsoft SQL Server, Dynamo DB ⭐ Web Scraping, Data Scraping ⭐ Seamless API Integrations ⭐ Streamlined Admin Panel Integrations 🌟 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: ➤ Google API's integration including Google Authentication using oAuth 2. ➤ Stripe, AWSSDK, PayPal, Azure, Strava, OpenAPIs ➤ ElasticSearch, Redis, BluePay, Stripe, DropBox, Google APIs, etc 🌟 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗢𝗳𝗳𝗲𝗿: ✅FullStack Web Development ✅Responsive Web Design ✅Custom Web Application Development ✅API Development and Integration ✅Database Management ✅Deployment and Optimization 🌟 This list highlights my core expertise, but I’m open to exploring other technologies and services to meet your needs. I'm available for consultations and remote contracting opportunities. Feel free to reach out to discuss your project—I'd be happy to help. Thank you for considering my profile!

We Build Next Generation of Mobile Applications Senior Mobile Lead Engineer | 9+ years of experience | High-quality Mobile and Web Apps | Claude Code 📊 My Core expertise is the Apple ecosystem, delivering robust solutions across iOS (Swift, SwiftUI), iPadOS, watchOS, and macOS. I work extensively with Swift, SwiftUI, UIKit, Combine, Objective-C, and advanced Apple frameworks such as HealthKit, MapKit, and complex third-party integrations. Beyond development, I provide end-to-end product delivery — from idea validation to App Store release. By combining Business Analysis, UI/UX Design, Agile Development, and Quality Assurance, we build future-proof applications that minimize technical debt and reduce long-term maintenance costs. ⸻ Services I can provide: 📱 Native Mobile Development (iOS & Android) • iOS Development: Swift, SwiftUI, UIKit, Combine, Objective-C • Android Development: Kotlin, Java • Cross-platform: React Native, Flutter • Apple Watch apps, smartwatch apps • Health & fitness apps, Apple Health, HealthKit • Maps & navigation (MapKit, Google Maps, Mapbox) • Real-time features, sockets, charts & analytics 🌐 Web Development • React, Angular, Next.js • TypeScript, JavaScript • High-performance front-end and responsive UI development 🛠 Backend & DevOps • Node.js, Python, Go, PHP • API development & third-party integrations • Cloud deployment: AWS, Docker, VPS 🎨 UI/UX Design & Product Thinking • Figma, wireframes, prototypes, user flows • Product discovery and idea validation before development 📊 Management & QA • Agile project management • Manual & automated testing • Business analysis & product ownership support ⸻ Fintech Expertise • Crypto applications (BTC, ETH, USDT, TRC20) • Real-time exchange data & socket connections • Charts, analytics, and on-chain operations • Secure authentication & sensitive data handling ⸻ Why Clients Choose Us ✔️ iOS-first team with deep expertise as Swift Mobile Developers ✔️ Reliable long-term partner for scalable product development ✔️ Strong focus on performance, usability, and clean architecture ✔️ Transparent communication and Agile processes ✔️ Full-cycle delivery: design → development → QA → release → support ⸻ Looking for a long-term Swift Mobile Developer instead of a one-off coder? If you need a stable, scalable, and carefully crafted mobile product built with modern iOS technologies, let’s discuss your goals. I can provide a clear project plan, timeline, budget estimate, and technical strategy tailored to your vision. ⸻ 🔑 Technologies & Keywords (SEO Optimized) Swift Mobile Developer, Senior Swift Developer, iOS Developer, SwiftUI, UIKit, Combine, Objective-C, Apple Developer, iPhone App Development, iPad App, macOS App, watchOS App, HealthKit, Apple Health, MapKit, Google Maps, Mapbox, Kotlin, Android Developer, React Native, Flutter, TypeScript, JavaScript, Figma, UI/UX Design, MVP Development, High-Quality App Development, Mobile Architecture, Performance Optimization, Scalable Mobile Apps, Crypto Wallet App, Bitcoin, USDT, tokens, Quality, high-quality app ⸻ 📩 Send me a message, and I’ll share my Upwork scheduler link so we can find a time that works best for you

💻 Back-End Development ⚡️ Full Stack Development ⚡️ Desktop Software Development 📜 .NET and C#: 🔹 ASP.NET Core 🔹 Entity Framework Core 🔹 FluentValidation 🔹 MediatR 🔹 Automapper 🔹 FastExpressions 🔹 Serilog 🔹 SignalR 🔹 Identity Framework Core 🔹 BenchmarkDotNet 🔹 xUnit, nUnit, FluentAssertions, NSubstitude, Bogus 🔹 Polly 📜 Databases: 🔹 MS SQL 🔹 MySQL 🔹 Postgres 🔹 MongoDB 📜 Architecture: 🔹 DDD 🔹 Event Driven Design 🔹 Clear Architecture 💻 Front-End Development ⚡️ Mobile App Development ⚡️ Full Stack Development 🚀 Expertise in: 📱 React & React Native (Expo): Building dynamic web and mobile applications 🌐 Modern Frontend Frameworks: Proficient in React, Angular 2+, Vue.js, and Next.js for responsive, scalable web development 🔧 Backend Knowledge: Familiar with PHP (Laravel, Slim, Lumen) and Node.js for basic backend integration 🛒 CMS & E-Commerce: Expertise in WordPress, WooCommerce, Plentymarkets, Magento theme/plugin development, and custom integrations ✨ Clean, Efficient Code: Passionate about writing maintainable and scalable solutions for a smooth user experience 🔗 API Integration: Skilled in SOAP/RESTful API development and integration for seamless client connectivity 💪🏻The following stack that successfully used: 🔹SCSS 🔹CSS 🔹HTML 🔹TypeScript 🔹RXJS 🔹NGRX 🔹NextJS 🔹ReactJS 🔹REDUX 🔹SAGA 🔹Promises 🔹Server Side Rendering based on NextJS 🔹NestJS 🔹MySQL 🔹ExpressJS 🧠 AI: 🔹 Machine Learning 🔹 Large Language Models (LLM) 🔹 Prompt Engineering 🔹 LangChain 🔹 OpenAI 🔹 Anthropic 🔹 Google GenAI 🔹 FAISS 🔹 Retrieval Augmented Generation (RAG) 𝙎𝙚𝙖𝙧𝙘𝙝 𝙛𝙤𝙧 𝙢𝙚 𝙪𝙨𝙞𝙣𝙜 𝙩𝙝𝙚𝙨𝙚 𝙠𝙚𝙮𝙬𝙤𝙧𝙙𝙨: C#, ASP.NET Core, .NET Framework, Entity Framework, SQL Server, PostgreSQL, MySQL, REST APIs, JSON, XML, GraphQL, Razor, Blazor, Php, Python, Angular, React, Vue.js, JavaScript, TypeScript, HTML5, CSS3, SCSS, Bootstrap, Tailwind, Azure (App Services, Functions, DevOps, Blob Storage), AWS, Docker, Kubernetes, Microservices, CI/CD, Git, GitHub, GitLab, TDD, xUnit, NUnit, Dapper, Swagger, OAuth, JWT, WebSockets, RabbitMQ, Redis, SignalR, Sitecore, Umbraco, Kentico, DNN, Orchard Core, Contentful, Strapi, ADO.NET, ASP.NET MVC, AngularJS, AJAX, Adobe Photoshop, ASP.NET Web API, Google Analytics, Google Chrome Extension, Ecommerce Website, Browser Extension, Web Application, Website Redesign, API, API Integration, Desktop Application, Website Optimization, Software Debugging, Web Development, Database Development, AI Agent Development, WildFly, Apache HTTP Server, Eclipse Jetty, Microsoft IIS, IBM WebSphere, SQLite, Mimer SQL, Azure Cosmos DB, MongoDB, EC2, ECS, Lambda, S3, RDS, CloudFormation, AWS Backup, IAM, CloudFront, CloudWatch

I specialize in embedded firmware and PCB development for IoT, industrial automation, wireless devices, and microcontroller-based products, as well as software development. I help startups, product teams, and hardware companies build reliable embedded firmware and PCB solutions for real-world products, along with software Development. My core work includes STM32, ESP32, Arduino, FreeRTOS, Modbus, RS485, CAN, BLE, Wi-Fi, MQTT, IoT gateways, sensor integration, PCB schematic/layout review, and firmware debugging. I can work on both sides of an embedded product: firmware and hardware. Clients usually hire me when they need help with: ✅ Firmware development for STM32, ESP32, Arduino, PIC, AVR, and nRF52 ✅ Debugging unstable firmware, communication issues, sensor errors, and hardware faults ✅ Modbus RTU/TCP, RS485, UART, SPI, I2C, CAN, BLE, Wi-Fi, MQTT, HTTP, TCP/IP ✅ PCB schematic review, multilayer PCB layout, Altium/KiCad/EasyEDA support ✅ IoT device development from prototype to working product ✅ Hardware bring-up, testing, documentation, and production-ready fixes ✅ Software and Dashboard Development (Python, NodeJs etc) What makes my work different is that I do not only “write code.” I analyze the full system: schematic, power, PCB layout, firmware architecture, communication timing, logs, and real hardware behavior. This helps find the actual root cause instead of only applying temporary fixes. My workflow is simple: Review your requirements, schematic, code, logs, and hardware setup Identify risks, missing details, and possible failure points Build or fix the firmware/hardware step by step Provide tested code, clear documentation, wiring diagrams, and handover files I have worked on embedded systems involving industrial controllers, IoT devices, wireless communication, custom PCBs, automation systems, sensor-based devices, and microcontroller firmware. If you need an embedded engineer who can understand both firmware and hardware, communicate clearly, and help move your product forward, I can help. Send me your project details, schematic, code, or issue description, and I’ll suggest the best practical next step.