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

🔥 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years, I’ve worked as a senior engineer, architect, and ex-CTO, helping startups, SMBs, and enterprise clients rebuild outdated systems into secure, scalable, future-ready platforms.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.

Though I can work in many different domains my favorites are artificial intelligence, web development and algorithm development. I'm keen on working on game development too.

It must be a hassle to develop mobile apps that are not only well functioned, blazing fast but also have to comply with Apple and Google guidelines. This daunting experience is entirely familiar to an experienced mobile developer like me. I have spent more than 7 years immersed in Apple iOS app development, witnessing iOS evolved from version 7 into 14 as of today. By servicing 15000+ Upwork hours delivering dozens of mobile projects, I know exactly how to bring my substantial experience to leverage your next innovative products, which includes but is not limited to: 📱 Build your app with the latest Apple iOS / Google Android SDK 📱 Setup mobile QC by adding any of unit tests, integration tests, automation tests... 📱 Setup mobile DevOps CI/CD pipeline using Bitrise, Fastlane... 📱 Assist in Apple and Google Play store submission and approval process 🤷‍♂ ️Something else missing? Feel free to throw it up to me. Challenge accepted! 🎖 Google Certified Associate Android Developer [ myup.work/hautt-aad ] 🎖 Scrum.org Certified Professional Scrum Developer [ myup.work/hautt-psd ] 📱 𝐈𝐎𝐒 ✅ 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄: MVVM, VIPER, RxSwift ✅ 𝐒𝐓𝐎𝐑𝐀𝐆𝐄: Realm, CoreData, Keychain, SQLite ✅ 𝐍𝐄𝐓𝐖𝐎𝐑𝐊𝐈𝐍𝐆: AFNetworking, Alamofire, Moya, Reachability ✅ 𝐈𝐌𝐀𝐆𝐄: SDWebImage, Kingfisher, AsyncImageView, Toucan ✅ 𝐓𝐃𝐃: Quick, Nimble ✅ 𝐎𝐏𝐒: Bitrise, Fastlane, TravisCI, TestRails, swiftlint, swiftformat 📱 Flutter ✅ 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄: Provider, BLoC, MobX, GetX ✅ 𝐒𝐓𝐎𝐑𝐀𝐆𝐄: Shared preferences, sqflite, sembast, Cookiejar, mmkv_flutter ✅ 𝐍𝐄𝐓𝐖𝐎𝐑𝐊𝐈𝐍𝐆: Dio, Flutter Downloader ✅ 𝐈𝐌𝐀𝐆𝐄: Cached Network Image, Bitmap, Photo View ✅ 𝐓𝐃𝐃: Mockito, Flutter Widget Test ✅ 𝐎𝐏𝐒: Bitrise, Fastlane

With 15+ years of experience, I deliver scalable, high-performance solutions blending Data Engineering, Full-Stack Development, and Analytics. I’ve partnered with global enterprises including Bosch, Pearson, ABN AMRO, Thomson Reuters, MSCI, Mercy, Krones, Amazon, and leading startups across Finance, eCommerce, Healthcare, and Supply Chain. Past Clients & Projects: - Wellnicity – MVP founding engineer: AI-driven health insights. - Almana HealthCare – Delivered CMS, portals, and patient apps. - Byway – Brand management tools with Amazon integrations & BI dashboards. - Bosch, Pearson, ABN AMRO – Built enterprise ETL pipelines, cut costs by 92% with Kafka, DBT, Trino, BigQuery. Key Expertise: ✔ Data Engineering – ETL, SQL, Kafka, Spark, BI dashboards, cloud orchestration (Airflow, Prefect, Dagster). ✔ AI & ML – Predictive models, recommender systems, generative AI (PyTorch, TensorFlow, Ray). ✔ Full-Stack Development – Python, .NET, C#, Node.js, React, Angular, Django, Azure, AWS. ✔ Big Data & Cloud – Event-driven architectures, microservices, serverless, cost-optimized pipelines. I specialize in turning complex data and tech challenges into scalable, business-focused solutions. If your business depends on data, cloud, and full-stack systems running flawlessly 24/7, let’s connect.

I help clients solve difficult reverse engineering problems involving Windows software, Android apps, firmware, proprietary protocols, and protected binaries. C, C++, C#, Delphi, Visual Basic. My work focuses on targets that are undocumented, obfuscated, protected, or otherwise difficult to analyze without deep low-level experience. This includes application and APK reverse engineering, native library analysis, driver and firmware research, protocol reconstruction, key and decryption-flow analysis, unpacking, data extraction, and architecture-specific analysis across x86, x64, ARM, and PowerPC. I use IDA, Ghidra, Binary Ninja, Frida, debuggers, and traffic analysis tools where appropriate, but the real value is the ability to reduce uncertainty quickly, isolate the logic that matters, and deliver clear technical findings clients can act on. Typical engagements include recovering undocumented communication behavior, identifying validation or decryption logic, understanding protected binary behavior, and assessing the feasibility and risk of deeper analysis before larger commitments are made. I focus on precision, discretion, clear communication, and practical results.

I help companies turn electronics ideas into real, production-ready products. I am an Embedded Systems Engineer with 10+ years of experience designing hardware, developing firmware, and building connected IoT and Edge AI devices from concept to mass production. I have worked with startups, research labs, and global organizations, including collaborations with Fortune 500 companies, The University of Bristol, and PGA of America. I don’t just build circuits I build complete products that are reliable, scalable, and ready for manufacturing. What I do end-to-end • System architecture and product definition • PCB design and hardware engineering • Firmware development and optimization • Edge AI integration (TinyML, on-device inference) • Wireless connectivity and IoT cloud integration • Mechanical design (enclosure + DFM-ready CAD) • Prototype development and production support I regularly take products from idea to prototype to production-ready hardware. --- Core expertise Embedded hardware development • ESP32 • Nordic (nRF51, nRF52, nRF91) • STM32, STM8 • Raspberry Pi platforms • NXP, Snapdragon, BeagleBone • NVIDIA Jetson AGX Orin • Google Coral Edge TPU • Axelera Metis AI Platform • EdgeCortix SAKURA • ARM Cortex controllers • Texas Instruments MSP and CC series • Atmel AVR and Arduino I design reliable embedded systems used in IoT devices, industrial equipment, wireless products, and research hardware. --- PCB design and hardware engineering Tools • Altium Designer • KiCad • EagleCAD • OrCAD Services • Schematic design • Multilayer PCB layout • High-speed PCB design • RF and wireless board design • Design for manufacturing (DFM, DFA) • BOM optimization and cost reduction • Production-ready manufacturing files --- Firmware development • Embedded C and C++ • FreeRTOS • Embedded Linux • Driver and low-level development • Low-power firmware optimization --- Edge AI • TinyML and on-device AI models • Sensor data processing and inference at the edge • ESP32 / ARM-based AI deployment • Reducing cloud dependency with real-time intelligence • AI-enabled IoT product design --- Communication and connectivity • Bluetooth, BLE, BLE 5 • WiFi • LoRa, LoRaWAN • NB-IoT • Thread, Zigbee • NFC, RFID • CAN • UART, SPI, I2C, USB, Ethernet Cloud and protocols • MQTT • HTTP • AWS IoT, AWS Lambda and cloud integration --- Mechanical design • Enclosure design for embedded products • 3D CAD modeling (production-ready) • Thermal and space optimization • Design aligned with PCB and manufacturing constraints • Support for injection molding and prototyping --- IoT product experience • EdgeAI Device for ATM • High-Speed Autonomous Surveillance Drone (350–400 km/h) • AI Personal Assistant • Smart Home Automation Systems • Wireless IoT Sensors • Industrial Monitoring Systems • GPS and Tracking Devices • Medical and Research Hardware • Automation Controllers • Cloud-connected Embedded Devices --- What I deliver • Production-ready PCB designs • Stable, optimized firmware • Functional hardware prototypes • Edge AI-enabled intelligent devices • Hardware debugging and performance optimization • Complete manufacturing support and documentation --- Client feedback “Bhavin is such a fantastic developer to work with. He was professional and handled all modifications seamlessly. He also immersed himself in the problem and provided unique solutions to the hardware and software challenges.” “I would happily employ Bhavin again. He is extremely efficient, works very fast, and communicates very well. The product was delivered on time and worked perfectly.” --- If you are building a new hardware product, IoT device, or Edge AI system, feel free to reach out to discuss your project. Best regards Bhavin Vaghela

⭐ Successfully Completed 100+ projects, 29 on Upwork. 8+ years of experience, and 3+ years on Upwork ⭐SKILLS: iOS App Development, Android App Development, Flutter Development, Web Development,Software Development, Back end engineering, front engineering, Full stack development, QA, PM. ⭐Technologies: iOS Native (Swift, SwiftUi, Objective-C), Android Native (Kotlin, Java), Flutter(Dart) Service which I offer are: 1. Native & Flutter based Android and iOS App Development. 2. Scrapping Scripts development. 3. Phone gap/ Ionic Cross-Platform App Development. 4. Bots Development for automating tasks. 5. Clover Market Place App development (Android). 6. Back end development in node.js express and php laravel. Different and Most Challenging work I had done: Did lot of projects here on up work but few among them, i will call them the most challenging and difficult. - Developed an app named "Punch Detection System" using ML model and AR kit of for the iOS. - Developed an app for my one of my client in netherlands that has been named as the wheel bees. Developed Clover POS android apps for 1 of my client. I have experience in below mentioned modules of clover. 1. Inventory. 2. Orders. 3. Discounts and promotions. Beside this i have also integrated scanning of barcode's and QRcodes in clover as well. Developed apps like video editors, filters creation e.t.c. Please contact me for discussing anything related to software development I absolutely love discussions.

Enthusiastic Computer Scientist & Software Developer skills : Java, C#, Python, AI, Digital Image Processing, MQL 5, .NET, WinUI 3, UWP, WPF platform: Android, Desktop accomplishment: Developer of Q Library Management System, Timetable Generator, Inventory management system, Blue Music player, Awwads Transport Services(Taxi services android app), 3D chess android app

I'm a Unity game developer. I have been in the Unity game development field for more than 10 years now and have developed more than 50 games from scratch, including games of all genres ranging from kid's games to action racing games. I develop unity games for a wide range of platforms, including 𝐦𝐨𝐛𝐢𝐥𝐞𝐬 𝐠𝐚𝐦𝐞𝐬, 𝐏𝐂𝐬 𝐠𝐚𝐦𝐞𝐬, 𝐭𝐚𝐛𝐥𝐞𝐭 𝐠𝐚𝐦𝐞𝐬, 𝐢𝐏𝐚𝐝 𝐠𝐚𝐦𝐞𝐬, 𝐚𝐧𝐝 𝐜𝐨𝐧𝐬𝐨𝐥𝐞 𝐠𝐚𝐦𝐞𝐬 which are compatible with all the engines like 𝐒𝐭𝐞𝐚𝐦, 𝐢𝐎𝐒, WEBGL, 𝐆𝐨𝐨𝐠𝐥𝐞 𝐏𝐥𝐚𝐲 and Console . Customization options are available to match your personal style and preferences. Join me for the ultimate gaming journey. Visit my website to discover portfolio and catch a glimpse of the future of game development. My expertise extends to the following Tools and Technologies in game development: 𝐄𝐱𝐩𝐞𝐫𝐭 𝐆𝐚𝐦𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: • Expert Unity game developer • Expert C++, C# 𝐄𝐱𝐩𝐞𝐫𝐭 𝐆𝐚𝐦𝐞 𝐃𝐞𝐬𝐢𝐠𝐧𝐢𝐧𝐠: • Expert UI/UX • Expert Adobe Photoshop, Blender 𝐅𝐨𝐥𝐥𝐨𝐰𝐢𝐧𝐠 𝐀𝐝 𝐧𝐞𝐭𝐰𝐨𝐫𝐤𝐬 𝐚𝐫𝐞 𝐢𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐞𝐝 𝐛𝐮𝐭 𝐧𝐨𝐭 𝐥𝐢𝐦𝐢𝐭𝐞𝐝 𝐭𝐨 𝐚𝐧𝐲 𝐜𝐨𝐧𝐬𝐭𝐫𝐚𝐢𝐧𝐭: • Google Admob (Interstitial, Banners, Static Rewarded Ads, Rewarded Video Ads • Unity Ads (Inersititial, Unity Video Ad) • Facebook ads Integrations • Google Firebase 𝐖𝐞 𝐚𝐥𝐬𝐨 𝐩𝐫𝐨𝐯𝐢𝐝𝐞 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐟𝐨𝐫 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐧𝐠 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐢𝐧 𝐠𝐚𝐦𝐞𝐬: • Wallet authentication • Getting NFTs • Sending transaction • Minting NFTs TYPES OF GAME DEVELOPED BY ME: 1) Arcade Games Development 2) Action Games Development 3) Trivia Games Development 4) Kids Games Development 5) 3D Racing Games Development 6) Endless Games Development 7) Puzzle Games Development 8) Simulation Games Development 9) IO Games Development 10) Word Game Development 11) Shooting Game Development 12) Game development according to your requirement. 🎯 𝗪𝗛𝗔𝗧 𝗜 𝗢𝗙𝗙𝗘𝗥 : 🔹 Custom Game Development: Complete end-to-end development for 2D and 3D games tailored to your needs. 🔹 Game Design: From concept development to gameplay mechanics and level design. 🔹 Multiplayer Setup: Integrate online multiplayer features to connect players worldwide. 🔹 Reskinning Services: Give your existing Unity games a fresh, new feel. 🔹 Game Optimization: Boost performance, fix bugs, and enhance graphics for a smoother experience. 🔹 Monetization Strategies 💰: Implement ads, in-app purchases, and other revenue models to maximize your game's potential. 🔹 Social and Analytics Integration: Firebase integration 🔹 Backend & APIs: Robust server-side solutions with ASP.NET Core, Node.js, or Firebase. 𝗔𝗹𝘄𝗮𝘆𝘀 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝗱 ✨ Frequent Updates: Stay informed with regular project updates and milestones. ✨ Clear Communication: I prioritize open, honest communication to ensure we're always on the same page. ✨ Post-Delivery Support: I offer continued support even after project completion for any additional needs or tweaks. Why Choose Me? ✔️ Client Satisfaction First, I prioritize delivering real value and earning trust. Your satisfaction isn’t just a goal it’s the standard. ✔️ Going Beyond Expectations, I consistently aim to over-deliver, adding extra polish and effort to every task, not just completing it. ✔️ Clear & Timely Communication, You’ll never be left guessing. I keep you updated, respond quickly, and maintain open, professional communication. ✔️ Proven Track Record, My clients feedbacks reflects the dedication, resilience, and results I bring to every project.