I help startups and product companies turn hardware concepts into certified, production-ready embedded devices. My work covers the full development cycle: schematic and PCB design, firmware development, prototyping, regulatory preparation (FCC/CE), and manufacturing support. Over the past 6+ years, I have delivered 15+ commercial products across IoT, wearables, medical devices, and industrial systems. • Built a rock fall detection system (Impact Sentinel) with FCC/CE certification, 10-year battery life, and 10km wireless range, now deployed for rail safety. • Designed a LoRaWAN-based wrist tracker for emergency situations, deployed across 6,000+ units. • Developed an underground mine safety system combining UWB positioning, LoRa communication, and collision avoidance for heavy machinery. • Designed the hardware and firmware for EKKO, an award-winning speech therapeutic device, and managed production of 100+ units. • Created multiple ultra-low-power IoT devices with multi-year battery life using STM32, ESP32, and custom RF circuitry. I work with STM32, ESP32-S3, and nRF52/53 families. Experienced with LoRaWAN, NB-IoT, BLE, UWB, sub-GHz RF, CAN, and Ethernet. PCB design in Altium Designer and KiCad and EasyEDA, production-oriented, compact (some as small as 30mm x 30mm), and built for manufacturability. I do not take academic assignments. I work with clients who are building real products for real markets. If you have a product idea or an existing design that needs to move forward, send me a message with a brief description and I will let you know how I can help

𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 | 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐄𝐱𝐩𝐞𝐫𝐭 | .𝐍𝐄𝐓 | 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 | 𝐍𝐞𝐱𝐭.𝐣𝐬 | 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 | 𝐍𝐨𝐝𝐞.𝐣𝐬 | 𝐀𝐳𝐮𝐫𝐞 | 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 🏆 Top Rated Plus | 10+ Years of Experience Building SaaS, Enterprise & AI-Powered Applications I help startups, SaaS companies, and enterprise organizations design, build, and scale high-performance software products that drive revenue growth, improve operational efficiency, and support long-term business objectives. As a Senior Full Stack Engineer, I bring extensive experience across modern frontend technologies, cloud-native .NET development, scalable backend systems, AI integrations, and enterprise application architecture. My expertise spans the complete software development lifecycle from product discovery and architecture to development, deployment, and ongoing optimization. I combine strong technical execution with a business-focused mindset, ensuring every solution is scalable, maintainable, secure, and aligned with measurable outcomes. 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 : Building fast, scalable, and user-centric applications using React.js, Next.js, Angular, Blazor, TypeScript, Tailwind CSS, and modern UI frameworks, with expertise in frontend architecture, responsive design, PWAs, SEO, performance optimization, accessibility, and enterprise-grade dashboards and portals. 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 & 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 : I possess strong backend engineering expertise across both the Microsoft .NET and JavaScript ecosystems, building scalable, high-performance, and cloud-ready applications. My .NET experience includes ASP.NET Core (.NET 6/7/8), C#, ASP.NET MVC, Web APIs, Entity Framework Core, Dapper, SignalR, Clean Architecture, Domain-Driven Design (DDD), microservices, and event-driven architectures. Complementing this, I have extensive experience with Node.js, Express.js, NestJS, REST APIs, GraphQL, WebSockets, and real-time application development. 𝐒𝐚𝐚𝐒 & 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: Delivered multi-tenant SaaS platforms, enterprise applications, CRM/ERP systems, customer portals, workflow automation solutions, marketplaces, subscription-based products, AI-powered applications, business intelligence dashboards, internal operations platforms, and Healthcare/HealthTech solutions. I have extensive experience designing, optimizing, and managing data-driven applications using SQL Server, PostgreSQL, MongoDB, MySQL, Redis, and Firebase, ensuring high performance, scalability, and reliability. My cloud expertise spans Microsoft Azure, including Azure App Services, Functions, Logic Apps, Storage, Azure SQL, Azure Active Directory, Key Vault, and Azure AI Services, as well as AWS services such as Lambda, S3, RDS, DynamoDB, and Cognito. I also possess strong DevOps capabilities with Docker, Kubernetes, CI/CD pipelines, Azure DevOps, GitHub Actions, and infrastructure automation, enabling streamlined deployments, cloud-native architectures, enhanced security, and efficient application lifecycle management. AI & Intelligent Automation • OpenAI Integration • Azure OpenAI • AI Agents • LLM Applications • RAG Systems • Conversational AI • Workflow Automation • AI-Powered SaaS Products • Intelligent Document Processing • Decision Support Systems 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 : Stripe, PayPal, Twilio, Firebase, Google & Microsoft APIs, CRM/ERP systems, payment gateways, and social authentication, with expertise in secure API integrations, automation, and scalable business solutions. Why Clients Choose Me ✔ Strong Frontend & Full Stack Expertise ✔ Deep Experience with .NET, React, Next.js, and Angular ✔ Proven SaaS & Enterprise Development Background ✔ Scalable Architecture & System Design ✔ AI Integration & Automation Expertise ✔ Clean, Maintainable, Production-Ready Code ✔ Clear Communication & Full Project Ownership ✔ Focus on Business Outcomes, Performance, and ROI Over the past decade, I have helped businesses launch new products, modernize legacy systems, improve application performance, automate operations, and build scalable platforms capable of supporting rapid growth. Whether you're building a new SaaS product, scaling an enterprise platform, modernizing an existing application, or integrating AI into your business workflows, I can help turn your vision into a secure, scalable, and production-ready solution. Let's discuss how I can help bring your project to life.

I am a game developer with over 5+ years of experience in Unreal Engine 4 and 5 along with Unity. I am highly skilled in creating immersive and engaging gaming experiences. My passion for game development drives me to continuously improve my skills and stay up-to-date with the latest technologies. With my expertise in Unreal and Unity Engine, I have a strong understanding of game mechanics, physics, and graphics, allowing me to bring my ideas to life. My goal is to create games that not only entertain, but also challenge and inspire players. I am always eager to work on new and exciting projects, and I am dedicated to delivering high-quality results. Have successfully executed certain VR games and currently working on AR platform, will be uploaded on portfolio once its been completed. My services includes: ✅Blueprint ✅C++ ✅C# ✅VFX ✅AR/VR ✅Animation ✅Connect wallet Metamask ✅Multiplayer ✅TCP/UDP Network Replication ✅ Asset Design & Modeling in 3D ✅ 3D Modeling and Rendering Services ✅ Visualization of Architecture in 3D 🌟What are my offerings to you? ✅Transforming your gaming concept into a fully operational prototype. ✅Guidance on configuring your Steam Store page. ✅Distribution of your game on Google Play or the Apple App Store. ✅A GDD (Game Design Document) template for your use. ✅Quality Assurance for your game, including testing and providing issue reports as well as suggestions for gameplay UI/UX enhancements. My ultimate goal is to ensure your complete satisfaction by bringing your visions and ideas to life. Below are a few examples to demonstrate this commitment.

🌟 Top Rated Plus Freelancer | Full-Stack Developer | Web & Mobile App Expert 🌟 Greetings! I'm Usama, a seasoned programmer specializing in web and mobile app development for Android and iOS platforms, along with expertise in Windows services and desktop utilities. With a strong background in C#.NET, ASP.NET MVC,.NET Core, Xamarin, Blazor, and.NET MAUI, I bring over 6 years of hands-on experience to the table. My expertise includes: Developing responsive web applications with Blazor and ASP.NET for a modern user experience. Creating cross-platform mobile applications using Xamarin,.NET MAUI for Android and iOS, and ASP.NET Core Web API. Designing and implementing Windows services for background tasks and automation. Developing desktop utilities using WinForm C# for various purposes such as data management, reporting, and more. Efficiently managing databases with Microsoft SQL Server and MySQL for seamless data handling. Here's why clients love working with me: a proven track record of delivering high-quality solutions on time. Expertise in OOP, MVC, API integration, and responsive design for web and mobile applications. Fluent in English, Urdu, and Hindi for seamless communication. Let's collaborate to bring your ideas to life and achieve success together. Feel free to explore my profile and check out feedback from satisfied clients. I look forward to the opportunity to work with you! Warm regards, Usama

I am firmware developer with over 8 years experience. I was working for one the biggest provider of BLE chips - Nordic Semiconductor - creating SDK, writing drivers, examples, tests and documentation. I was also part of team creating BLE MESH stack for nrf platform. I specialize in creating embedded systems (eg asset tracking) as well as standalone device (toys, gadgets) including embedded device firmware and mobile app software connected over BLE. Working experience: - worked for 2 years for Nordic Semiconductor (famous nrf51 and nrf52 series) creating BLE based firmware - worked for Silvair - company which created first certified BLE MESH stack I completed many projects: - child toy with ble, mic, speaker, i2c touch sensor, led - e-ciggarette with ble, led, complex algorithms, unit tests, system tests - line-follower with ble, motor control, PID algorithm - indoor tracking system including beacons, scanners and relays - nrf52 based device with accelerometer, getting data from it and sending it to mobile over BLE with mobile app plotting data in real time - nrf52 based device to commmunicate with external device getting data over i2c and sending it to mobile over BLE / working on mobile app - nrf52 based home automotion device with bulbs connected, controlled over BLE by mobile app written by me #ARM Cortex-M #AVR #BLE #C #C++ #Android #python

I am a full-stack developer with an IT background and strong experience in backend, frontend, desktop, database, and network-related development. My main skills include C#, ASP.NET Web API, Java, C/C++, Python, Angular, and React, with additional experience in Flutter, FastAPI, Flask, Laravel, and WinUI. I have worked with MySQL, MariaDB, PostgreSQL, Microsoft SQL Server, SQLite, Microsoft Access, and Azure-related services, and I am experienced in SQL, LINQ, query optimization, database design, and reporting. I also have solid knowledge of Linux/Unix and Windows server and network administration. My project experience includes ERP systems, VPN applications, router and SMS monitoring tools, face recognition systems, and custom business platforms. I can support projects from architecture and development to deployment, troubleshooting, and maintenance.

👋 Hi, I’m a CTO of Iomico IoT development company. We have over 10+ years of experience in firmware & and electronics and over 20 years of experience in software development. We successfully completed a number of IoT projects in the aerospace, manufacturing, logistics, retail, automotive, healthcare, and consumer industries. I encourage you to learn more about Iomico in our intro presentation: 👉 cutt.ly/KXdNUcf 💥We specialize in creating advanced hardware, firmware, and software solutions for start-ups and established companies. Moreover, we have a very experienced and trustworthy development team passionate about technology and innovation. That’s why we deliver you the best project result and keep you away from any risks. 🎯 Electronics engineering: ✔️radio-electronic parts research & selection ✔️Schematics ✔️PCB design ✔️Simulations & Analysis ✔️Review of your current designs 🎯 Firmware technologies we use: ✔️C/C++, Verilog, VHDL, Qt, Python ✔️Baremetal ✔️RTOS (Zephyr, FreeRTOS, AWS RTOS, Chibios, RT-Linux). ✔️Embedded Linux (OpenWRT, uCLinux, Yocto, and stand-alone Linux applications/services/drivers) ✔️Protocols: MQTT, TCP, WebSockets, HTTS(S), FTP, UDP, HTTP, SSH, etc. ✔️Wired and Wireless Networking (BLE / Bluetooth, ZigBee/Z-Wave, UWB, Lora / LoraWAN / 6LoWPAN, RFID, NFC, Mesh Networks, Thread, MLM2M, GSM 3G / 4G /5G, LTE, NB-IOT, Wi-Fi, GPS / GNSS (Galileo, GLONASS, BeiDou), PCIe Gen2/3/4, SATA R.3.x, LVDS, SDI, 10/100/1000 Ethernet, USB up to 3.2, HDMI, MIPI-CSI, MIPI-DSI and more). ✔️Design of MCU/CPU firmware (Nordic Semi (NRF52832, NRF52840, NRF5340, NRF9160, NRF7002), Rockchip (RK3399, RK3328), NXP (i.MX8, i.MX9, Layerscape), STM (STM32H7 and others), Microchip/Atmel, Texas Instruments (Sitara AM57x series), Espressif (ESP32, ESP8266), Renesas, Cypress, Infineon, Nvidia Jetson and any others). ✔️FPGA: Lattice, Xilinx, Intel, Microchip. 🎯 Software technologies we use: ✔️Java, Kotlin, PHP, C#, JavaScript (Angular, React, VueJS, NodeJS). ✔️iOS (Swift, Objective C) and Android (Java, Kotlin) programming, AOSP, cross-platform QT, and React Native. ✔️MySQL, PostgreSQL, OracleDB, MSSQL, MangoDB, RedisDB, and other cloud relational and NoSQL databases. ✔️Messaging queue tools like RabbitMQ, Kafka. ✔️Public and private clouds: AWS, Google Cloud, Digital Ocean, OpenStack. ✔️Cloud clustering / horizontal scaling: Docker, Kubernetes. ✔️OTA: Mendor.io 🎯 Edge AI / Computer Vision: ✔️PyTorch, TensorFlow, MediaPipe, OpenCV, Deepstream ✔️Research and development solutions for “smart” edge devices 🎯OTA: Mender.io, RAUC, Esper and etc. Let me explain how everything works: 1️⃣ First of all, we sign an NDA and arrange a conf call to learn more about your project. 2️⃣ If we agree on each other’s terms, you shall make a prepayment of an amount equal to two weeks of my work on the project. This prepayment shall be used as an advance retainer for my services. 3️⃣ Then, I get down to work alone or with my iomico team, and the payments should be done biweekly. 4️⃣ Please pay attention to my hourly rate and that I work only from the Iomico agency. Furthermore, having released the code, I guarantee the support of the developed product. If you’re ready to implement your ideas (no matter how crazy they are), don't hesitate to contact me here or write to my company Partnership Manager, Michael Bychko - m.bychko@iomico.us.

🔥 Send me your idea — and I’ll give you a free initial consultation with practical thoughts, possible solutions, and a rough time and cost estimate. Legacy systems draining budget, slowing delivery, and blocking growth? At OSKI Solutions, we help companies modernize legacy applications and build scalable cloud-ready products with our 3x delivery strategy: experienced engineers + AI-assisted coding + disciplined execution. That means you get more than just developers. You get a team that can move significantly faster on implementation, reduce repetitive work through AI-assisted workflows, and still keep architecture, maintainability, and business priorities under control. Most of our engineers are from Ukraine, and we’ve built a delivery model that combines strong technical talent with modern AI tools to help clients ship faster without sacrificing code quality. Over the past 20+ years, I’ve worked as a senior engineer, architect, and ex-CTO, helping startups, SMBs, and enterprise clients rebuild outdated systems into secure, scalable, future-ready platforms. We work hands-on with .NET, Node.js, React, and modern cloud infrastructure to turn brittle systems into products that are easier to maintain, extend, and grow. What we do best Backend Development .NET Core, ASP.NET MVC, C#, Entity Framework Node.js, Express, REST APIs, GraphQL APIs Microservices, event-driven systems, business-critical backend logic Frontend Development React, Next.js, TypeScript, Redux Angular, Vue.js, SPA and PWA development Responsive interfaces, Tailwind, Material UI Legacy Modernization Legacy .NET and custom business platform modernization Monolith to modular/cloud migration Performance, maintainability, and technical debt reduction CMS & Business Platforms Umbraco CMS, Umbraco Cloud, migrations, custom development ERP-related systems and workflow platforms Internal tools, client portals, dashboards, admin systems Cloud & DevOps Azure, AWS, Google Cloud Docker, Kubernetes, CI/CD pipelines GitHub Actions, GitLab CI, deployment automation Databases SQL Server, PostgreSQL, MySQL MongoDB, Redis, caching and query optimization API Integrations & SaaS Stripe, PayPal, Twilio, SendGrid Slack, Shopify, Zoom, QuickBooks, Google Maps SaaS integrations, workflow automation, external service connectivity Why clients choose OSKI Solutions 3x delivery strategy: senior engineers + AI-assisted coding + structured execution 20+ years of experience modernizing complex systems CTO-level thinking focused on business outcomes, not just tickets Full-cycle delivery from architecture to deployment Lean, practical approach that keeps MVPs and modernization efforts within scope Clear communication with weekly demos, tracked hours, and transparent reporting Selected results One Motion Technologies — designed and built ERP system from scratch TutorPro — helped scale a SaaS platform, supporting 3x adoption growth in 2 years Umbraco platforms — delivered 15+ CMS and business platforms, including cloud migrations and integrations What our 3x approach means in practice We use AI to accelerate coding, prototyping, refactoring, and repetitive engineering tasks — but not to replace engineering judgment. The result is: faster delivery, cleaner implementation, better budget efficiency, and a stronger technical foundation for future scaling. 💬 Send me a message, and I’ll review your project, suggest the best approach, and give you a realistic next-step plan.

Top Rated Plus | Microsoft Full-Stack Developer | Enterprise Software | Healthcare Technology Expert Helping enterprises, healthcare organizations, and SaaS companies build secure, scalable, and business-critical software solutions using the Microsoft technology stack. With 14+ years of experience, I specialize in designing and developing enterprise-grade web applications, healthcare software, cloud platforms, AI-powered solutions, and complex business systems that improve operational efficiency, automate workflows, and support long-term business growth. I work across the complete software lifecycle from solution architecture and product planning to development, API integration, cloud deployment, modernization, and ongoing support. Microsoft Technology Stack Backend Development — C# — ASP.NET Core — ASP.NET MVC — ASP.NET Web API — .NET Framework — .NET 8 / .NET Core — Entity Framework — LINQ — Dapper — REST APIs — Microservices — Windows Services Frontend Development — Angular — AngularJS — React — Blazor — Next.js — JavaScript — TypeScript — HTML5 — CSS3 — Bootstrap — jQuery — AJAX Database — Microsoft SQL Server — Azure SQL — Stored Procedures — Performance Optimization — Database Design Cloud & DevOps — Microsoft Azure — Azure App Services — Azure Functions — Azure Service Bus — Azure Storage — Azure DevOps — CI/CD — GitHub — GitLab — Bitbucket AI & Intelligent Automation — OpenAI — Azure OpenAI — LLM Integrations — AI Agents — Workflow Automation — NLP — Machine Learning — Intelligent Document Processing Enterprise Software Development Expertise I build modern enterprise applications that are secure, scalable, cloud-ready, and designed for long-term maintainability. Enterprise Solutions ✔ Enterprise SaaS Platforms ✔ ERP Systems ✔ CRM Solutions ✔ Business Process Automation ✔ Multi-Tenant Applications ✔ Workflow Management Systems ✔ Inventory Management ✔ Supply Chain Solutions ✔ Warehouse Management Systems (WMS) ✔ HRMS ✔ Financial Management Systems ✔ Vendor & Partner Portals ✔ Customer Self-Service Portals ✔ Reporting & Analytics Dashboards ✔ AI-powered Business Applications ✔ Legacy Application Modernization ✔ Enterprise API Development & Integration Healthcare Software Development Expertise Healthcare technology is one of my strongest domains. I have extensive experience developing and integrating healthcare software solutions across the complete patient and revenue cycle. Healthcare Solutions ✔ Electronic Health Records (EHR) ✔ Electronic Medical Records (EMR) ✔ Practice Management Systems ✔ Revenue Cycle Management (RCM) ✔ Medical Billing ✔ Claims Processing ✔ Scheduling Systems ✔ Patient Portals ✔ Telemedicine Platforms ✔ Healthcare CRM ✔ Laboratory Management ✔ Ophthalmology Software ✔ Patient Engagement Platforms ✔ Provider Portals ✔ Clinical Workflow Automation ✔ Inventory & Medical Device Management Healthcare Integrations — Epic — Cerner — eClinicalWorks — Allscripts — NextGen — GE Centricity — HL7 — FHIR — HIPAA Compliance — CMS Workflows API Integration Expertise I have extensive experience integrating enterprise applications with third-party platforms including: — Microsoft APIs — Google APIs — Stripe — PayPal — Square — Twilio — SendGrid — DocuSign — Azure Services — Payment Gateways — CRM Platforms — ERP Systems — Healthcare APIs — AI APIs Development Services ✔ Custom Enterprise Software Development ✔ SaaS Product Development ✔ Full-Stack Web Development ✔ Cloud Migration ✔ Legacy System Modernization ✔ API Development ✔ API Integration ✔ Enterprise Architecture ✔ Performance Optimization ✔ Database Design ✔ Application Support & Maintenance ✔ AI Integration ✔ Software Consulting Industries Served — Healthcare — HealthTech — Enterprise Software — SaaS — Manufacturing — Insurance Why Clients Hire Me ✔ 14+ Years of Enterprise Software Development Experience ✔ Top Rated Plus on Upwork ✔ Strong Microsoft Technology Stack Expertise ✔ Deep Healthcare Software Development Experience ✔ Enterprise Architecture & Solution Design ✔ Scalable, Secure & Maintainable Code ✔ Excellent Communication ✔ Agile/Scrum Development ✔ Transparent Project Management ✔ Long-Term Technical Partnership ✔ Business-First Development Approach My goal is not just to write code and I build software that solves complex business problems, improves operational efficiency, reduces manual effort, and creates long-term value. If you're looking for an experienced Microsoft Full-Stack Developer who understands both enterprise software development and healthcare technology, let's discuss how I can help turn your vision into a scalable, production-ready solution.

As a seasoned innovator and software development expert from New York, with over 28 years of experience, I have a strong track record of success in creating innovative and high-quality products. My expertise lies in Windows-based software development using C++, as well as in medical software, medical billing codes, HIPAA compliance, artificial intelligence, internet of things, and low-level programming such as kernel drivers. I also have a deep understanding of cyber security, cyber intelligence, vulnerabilities assessment, security research, encryption, blockchain, and cryptography, and have developed several unique platforms in these areas. Throughout my career, I have taken projects from concept to completion, turning ideas into mature and successful products. In addition to my hands-on experience, I am also an author, having written a C++ bestseller and currently working on a new book for a major publisher. I am eager to take on exciting and challenging projects and put my skills and experience to work for you. If you are in need of a skilled and innovative software developer, I would be happy to discuss your project further. I am a BBB Accredited business and a Microsoft Supplier, among my clients: Sony, IBM, OpenAI, Pixm Security, Deep Code, Security Snares and more. I have experience in medical applications, review and assign correct CPT codes to medical procedures, comply with Epic and Cerner requirements and use AI for such applications. I am a member of HTCIA.