Experienced in cross-platform and native mobile app development, admin panels, dashboards, cloud, IoT solutions, web applications, and back-end (REST API, MQTT, etc) I am a Team Lead of the CitrusDev team, a Ukrainian software development company with over 40+ mobile and web developers, designers, project managers, DevOps, and QA specialists onboard. This means that besides my programming skills, you always have access to a full-stack product design & and development team. More about CitrusDev: CitrusDev provides customized software solutions for IoT startups, SaaS companies, eCommerce stores, LMS, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open-source technologies and platforms to bring innovation in an agile fashion. Our team excels in Java, Kotlin, Swift, Flutter, React Native, PHP, Laravel, WordPress, React.js, and Vue.js. With over 40+ people, CitrusDev has either empowered client teams or delivered end-to-end development projects for brands from the Internet of Things, consulting, eCommerce, marketing, or eLearning industries and is recognized as a Top IoT Developer in Ukraine by Clutch. Mykhailo, CitrusDev Team Keywords: iOS, Android, Flutter, BLE, Bluetooth, Core Bluetooth, Dart, Swift, Java, Kotlin, ESP32, IoT development, Internet of Things, embedded systems, IoT solutions, IoT firmware, IoT cloud, MQTT, WebRTC,, ESP32, Raspberry Pi, nRF, Nordic Semiconductors, NB-IoT, LPWAN, LoRaWAN, Zigbee, IoT architecture, IoT security, sensor integration, IoT protocols, real-time data processing, wireless communication, smart devices, cloud integration, AWS IoT, Azure IoT, Google Cloud IoT, ThingsBoard, Node-RED, Kaa IoT, OpenHAB, Home Assistant, industrial IoT, IoT automation, remote monitoring, IoT gateways, AIoT, machine learning for IoT, data analytics, smart home, smart city, smart farm, smart agriculture, agritech, healthcare, smart industry, smart logistics, IoT dashboards, IoT consulting, device-to-cloud, IoT scalability, low-power IoT, IoT connectivity, mobile app development, IoT mobile apps, cross-platform IoT apps, Flutter, native Android, native iOS, NFC, GPS tracking, telematics, wearable technology, connected devices, smart sensors, IoT-enabled automation, PCB development, hardware design, circuit design, custom IoT hardware, IoT prototyping, embedded hardware development, IoT manufacturing, cloud-based IoT platforms, real-time IoT analytics, IoT data visualization, edge AI, fog computing, MQTT brokers, CoAP, LwM2M, IoT fleet management, thermal printers, barcode scanners, RFID, heart rate monitors, ECG sensors, temperature sensors, humidity sensors, gas sensors, motion sensors, accelerometers, gyroscopes, pressure sensors, environmental monitoring, smart wearables, industrial sensors, medical IoT devices, IoT-based tracking solutions

Hello! I’m Abdullah, a product designer and engineer with a knack for bringing innovative ideas to life. I don’t just operate a CAD software, I partner with clients to transform their concepts into real, market-ready products. Here’s how ⬇️ ✅ Deep Dive into Ideas: I start with discussing your ideas and goals in detail to make sure every aspect is covered and right deliverables are set (even the ones you may have missed!). ✅ End-to-End Product Design: Starting from rough initial concepts and finishing at manufacturing guidelines for a market-ready product, I provide a one-stop solution, making it a journey rather than an isolated task. ✅ All steps included: The goal is to run your idea through a very structured set of stages that are backed by practical experience and engineering knowledge. Some of these are: 👉 Concept design 👉 Mechanical Calculations and simulations 👉 CAD design 👉 Embedded systems and sensor integration 👉 PCB design 👉 Prototyping and 3D printing 👉 DFM and Manufacturing Consultancy ✅ Prototyping and Iterative Design: I work through multiple design iterations, ensuring each version of your product gets closer to perfection. ✅ Proactive Problem-Solving: My goal is to anticipate any hurdles before they arise and suggest improvements that make the product reliable from every angle. ✅ Exploring Further Possibilities: The journey doesn't end with manufacturing as there is a need to push the boundaries with newer versions and design upgrades. I strive to maximize your product’s potential with a forward mindset. ✅ Confidentiality and IP Protection: Your ideas are valuable, and I take confidentiality seriously. I’m always ready to sign a Non-Disclosure Agreement (NDA) to protect your intellectual property. Whether you’re refining an existing product or starting from scratch with a new idea, or if you're just stuck in one of the steps and need to get that obstacle out of the road, I’m here to help you every step of the way. Me and my team at Neoken Technologies bring a combined experience of more than 25 years to provide hands-on support and practical consultation. Check out more about what we do and the work we've done on our website by googling "Neoken Technologies". Or simply drop a text so we can talk more. Let’s Go!

Experienced in: 1. Computer vision • C++, Python, OpenCV, CUDA, Git, Linux, Qt, Boost, OpenGl, PCL, Strong math background, Neural Networks - road segmentation for unmanned vehicles (ENet, Caffe, OpenCV, C++, Linux) - car tracking (Yolo v3, OpenCV, C++, Linux) - wagon number identification (Yolo v4, Python) - implementation of real time 360°/perspective camera transformation on Cuda (C++, Cuda, OpenCV, Linux, Jetson Nano) - distance calculation to point on 2D camera frame (C++, OpenCV, Linux) - automate grading system for handwritten answer sheets (computer vision part, OpenCV, Java, Android Key stack: Linux, C++ (Qt), Python, Java, OpenCV, Yolo (darknet) 2. Machine Learning Machine learning research projects in the following domains: - person segmentation (ModNet, RVM, TDNet, UCTransNet, XMem etc.) - image inpainting (Pen-Net, Deepfillv2, Shift-Net, ViNet etc.) - image upscale (RDN, RRDN, Stable Diffusion, ISR etc.) - image relighting (Total Relighting, DPR, RelightNet etc.) - road segmentation for unmanned vehicles (ENet, Caffe, OpenCV, C++, Linux) - car tracking (Yolo v3, OpenCV, C++, Linux) - wagon number identification (Yolo v4, Python) - implementation of real time 360°/perspective camera transformation on Cuda (C++, Cuda, OpenCV, Linux, Jetson Nano) - distance calculation to point on 2D camera frame (C++, OpenCV, Linux) - automate grading system for handwritten answer sheets (computer vision part, OpenCV, Java - Android, IOS - Swift) Key stack: Linux, Python, Pytorch, Tensorflow, OpenCV, Pillow, Numpy, C++, CUDA, Darknet, SegNet 3. Robotics and Embedded development: - OCPP Protocol, Linux, Modbus, Raspberry Pi, CAN; -ROS Robot operating system; - Skilled in SLAM, localization, mapping - Experienced in path planning algorithms, obstacle avoidance, holonomic, and non-holonomic motion planning, trajectory planning for robotics arms; - Used to work with Bayesian/Kalman filters, and sensor fusion (LiDAR, IMU, Visual, Odometry, Radar, GPS). 4. Android development (Kotlin, Java, Android Studio, Eclipse, Firebase). Has expert colleagues in: • .Net Framework (C#, VB.Net, ASP.Net, .Net Core, WPF, UWP,WCF, ADO.Net) • Java (j2se, j2ee, servlets, java beans, Maven) • JavaScript (Node.JS, Express.js, Vue.js, Element.js, Angular.js, D3.js) • C++ (TCP/IP, HTTP, HTTPS, WebSocket, Modbus) • Python (MAVLink, WebSocket) • Step7 (S7 Communication, OCPP, Modbus, CANOpen, ProfiNet) Database • PostgreSQL • MySQL • MongoDB • Microsoft SQL • Oracle Database • Neo4J Software development for mobile platforms • Crossplatform React Native, Flutter, Xamarin, • Android (Kotlin, Java, Android Studio, Eclipse) • iOS (Objective C, Swift) Mobile apps development: • Crossplatform: Futter, React Native, Xamarin. • Android (Java, Kotlin) • iOS (Objective C, Swift) 1. Native Development - Kotlin/Java - Swift / Objective-C - iOS/macOS/tvOS/watchOS - Firebase, CloudKit, Coredata 2. Cross-Platform and Hybrid App Development - React Native/React - Flutter / Dart - Xamarin.iOS / Xamarin.Android / Xamarin.Forms tech stack ● Android Studio, Gradle, Kotlin DSL, KSP ● Kotlin, Java programming languages ● AndroidX, Android Jetpack libraries, Android Architecture Components ● Jetpack Compose ● Material Design Components ● Clean Architecture, SOLID design principles ● MVVM, MVI, GoF design patterns ● Modularization (multi-module projects) ● Kotlin Coroutines + Flow, RxJava, RxBinding ● REST API / Networking - OkHttp, Retrofit 2, Socket IO ● Room Database, SQLite, Datastore ● Kotlinx Serialization, Protobuf, Moshi, Gson ● Dependency Injection (Hilt, Dagger 2, Koin) ● Git ● Firebase Products, Google Cloud APIs, HMS Services ● Admob, Google Play Billing Library (in-app purchases), Samsung/Huawei IAP ● Unit / Instrumented (UI) tests ● Agile Scrum development methodology ● CI/CD (GitHub Actions) AR/VR: Vuforia ARkit/ARcore/AR Foundation Wikitude Oculus Integration OpenXR XR Interaction toolkit VR Walkthrough UltimateXR VR Interaction Framework Hardware expert: • Nvidia Jetson Nano, TX2, Xavier; • Raspberry Pi; • Arduino, STM32; • Depth cameras Intel Realsense d435i , Zed Sterelabs. • Lidars, Radars. Charging stations for the Electric Vehicles development software for the managing stations and networks (server and user applications): • C#, SQL, PostgreSQL, .Net Core, REST Api, WebSockets • OCPP Protocol, Linux, Modbus, Raspberry Pi Software development • .Net Framework (C#, VB.Net, ASP.Net, .Net Core, WPF, UWP,WCF, ADO.Net) • Java (j2se, j2ee, servlets, java beans, Maven) • JavaScript (Node.JS, Express.js, Vue.js, Element.js, Angular.js, D3.js) • C++ (TCP/IP, HTTP, HTTPS, WebSocket, Modbus) • Python (MAVLink, WebSocket) • Step7 (S7 Communication, OCPP, Modbus, CANOpen, ProfiNet) Database • PostgreSQL • MySQL • MongoDB • Microsoft SQL • Oracle Database • Neo4J

# You need an honest and dedicated person passionate about technology # You see value of me running a 40x man software house built organically Software engineers from Poland are consistently ranked among the world's best, frequently placing in the TOP 3 globally on platforms. If you're still reading here, it means we might be a fit. I handle full products or build a dedicated team to works for you. I have clients working with for 12+ years now, but also do on-time proof of concept jobs. I like what I do as I enjoy bringing tech value and meeting people. I'm now a serial founder, advisor and a VC investor in Sweden and Singapore funds. But don't just take my word for it: 💬 “Not only was I impressed with the timely delivery of quality products, but I was also impressed by his integrity. I recommend Kacper 100% and would be happy to speak to anyone to provide more details!” – Brad M.
 💬 “Kacper, your company was able to deliver a working product where others have failed.” – Jamie J. 💬 “These guys have turned me around. They were flexible, responsive, fast, gave great feedback and got the job done. They have become my "go to" dev team.” – Tony C.
 💬 “Milo team has been fantastic and as dedicated as our employees in delivering high quality code and software.” – Mojgan H.
 💬 “Milo has delivered all the benefits of outsourcing with none of the problems.” - Mark M. 
 Here's a boring list of what my team and I can do for you. Hopefully Upwork will position my account higher because of this nice list below: ✅ Pre-Implementation Analysis (PIA): Before writing a single line of code, we create a clear roadmap through collaborative workshops to: • Define your business goals and user workflows • Reduce development risks by addressing challenges upfront • Speed up delivery with well-defined technical plans • Stay on budget by avoiding costly surprises What you get: • Business analysis - Goals, workflows, feature alignment • Technical architecture - Tech stack, UI/UX prototypes, scalability strategies • Development roadmap - POC to full product launch milestones • Workshop insights - Actionable next steps ✅ UI/UX Design & Product Design - User-Friendly Interfaces: Our design process creates beautiful, intuitive experiences: • UX research to understand user needs • Rapid prototyping and wireframes • High-fidelity mockups and design systems • Usability testing for seamless experiences 🛠️ Design tools: Figma, Adobe XD, Sketch, InVision, Balsamiq, Axure, Proto, Framer ✅ Full-Stack Development: • Architecture: Client-Server, Layered, Event-Driven, Peer-to-Peer (P2P), Plug-ins, Microservices, MVC ✅ Frontend & Backend Technologies: • Frameworks: Django, React, Angular, Node , Vue, Ember, Semantic-UI, Backbone, jQuery, Qt, Flutter, React Native • Languages: JavaScript, Python, C++, Qt, C, HTML, CSS, Rust, Perl, Go, TypeScript, SQL, Objective-C, Swift, Assembly, R • Databases: PostgreSQL, Redis, Elasticsearch, MySQL, SQLite, Oracle, MongoDB, SQL Server • DevOps: Git, Jenkins, Docker, Kubernetes, AWS, Ansible, Microsoft Azure, Vagrant, CI/CD pipelines, Sentry, Google Cloud, Selenium ✅ Mobile & Web Applications: • Cross-platform mobile apps (iOS, Android) • Progressive web applications (PWA) • Enterprise web solutions • API development and integrations ✅ Testing & QA: Comprehensive testing strategies: • Test-Driven Development - Catch issues early • Manual testing - Real-world scenario validation • Automated testing - Performance and accuracy • Cross-platform testing - Web, mobile, desktop, embedded systems ⚙️ QA Platforms: • Web: Chrome, Safari, Edge, Opera, Firefox, Brave • Mobile: Android, iOS, ChromeOS, Tizen • Desktop: Windows, macOS, Linux, ChromeOS • Embedded: Raspberry Pi, Arduino, SparkFun, Beagleboard, BeagleBone Black, NVIDIA, Rock Pi, SimpleLink, UDOO, QNX, VxWorks, Seeed, Intel Nuc, Embedded Linux, Odroid-C2, Banana Pi, Qualcomm Snapdragon • Protocols: I2C, SPI, USART, USB, DMA, I2S, ADC, DAC, CAN, Ethernet 🛠️QA Tools: TestRail, Selenium, Appium, Cypress , Postman, JMeter, Robot Framework, BrowserStack, Cucumber, Katalon, Squish, Zephyr, Bugzilla, Testim, SoapUI 💼 Industries we serve: • FinTech & Blockchain solutions • Healthcare & Biotech applications • E-commerce & Marketplaces • Education & EdTech platforms • Business Operations software • Embedded Systems & IoT • Travel & Hospitality apps 👨🏻‍🏫 Advisory & Fractional CTO Services: With 15+ years building software across 4 continents I can consult on: • Product strategy and technical roadmapping • Technology selection and architecture decisions • Team scaling and development processes • Investor-ready technical due diligence Ready to take your idea from concept to reality? Let’s talk. 📞

I’m a qualified Electronic & Electrical Engineer with over 8 years of cross-functional experience across hardware design, firmware development, and creative technologies. My core strength lies in delivering innovative, reliable solutions that blend engineering precision with user-centric design. 🌐 What I Bring to the Table - Hardware & Firmware Expert: 8+ years of experience designing custom embedded systems, developing efficient firmware in C/C++ and Arduino, and building robust PCBs using Altium, Eagle, and KiCad. - IoT & System Integration: Developed smart automation systems using ESP32, Raspberry Pi, and STM32 platforms. Skilled in MQTT, OTA updates, and cloud-connected devices. - Web & Backend Development: Proficient in building scalable back-end services and web dashboards for IoT systems using PHP, JavaScript, and Laravel. 🏆 Achievements - Best Project Award by IESL Sri Lanka for a wireless power transfer system. - 1st place in Robotics Competition – University of Peradeniya. - Over 100 custom PCBs designed and delivered to global clients though Fiverr. If you're looking for a versatile problem-solver who thrives in both engineering and creative domains, let’s connect and bring your ideas to life. Additionally, I have team of hardware and software experts, and we can do large projects and develop and deliver complete solutions.

Sid is passionate about bringing electrical project ideas and concepts all the way to completion as design files ready for mass production. From making sure the initial idea is viable, to choosing the parts, designing the electrical schematic, and routing the PCB...to writing, debugging and testing the firmware required for the requisite functionality. PROGRAMMING • 18 years of experience with programming in C/C++, BASIC, and Assembler (machine code). • Extensive experience writing firmware utilizing hardware interrupts, MCU peripherals, RTOS, and multithreading. • Equally at home writing firmware for 8-bit processors (Microchip PIC, 8051, etc.) as with 32-bit processors (including ARM-based processors, the ESP32 product series, and more). • Writes tight and efficient code that is both fast and very lightweight: reduces processor requirements and cost. • Experience in writing secure firmware update infrastructure (for any processor with bootloader provision and self-write capability, including the ESP32). • Use of captive-portal HTML5 web UIs for easy headless product field setup and configuration, bypassing the need for iOS & Android app development and costs. ELECTRICAL • 16 years of experience designing schematics & PCBs in EDA software. (Currently using KiCAD, a powerful cross-platform EDA suite. As it's free, that means that you can easily view project design files at any time without any costly subscription requirements.) • Enjoys finding creative and unusual solutions to design challenges (both electrical and software), to meet budgetary requirements and/or space constraints. • Experience with both monochrome and color LCD UIs, with user interaction via physical buttons, switches, encoders, touch pads, TFT LCD touchscreens, IR remotes and more.

Top 1% Upwork specialist in AI & Embedded Systems. I architect and build solutions using LLMs, CV, and C++/Qt on Nvidia Jetson. My focus is turning your ambitious vision into a reliable, high-performance product. As a Georgia Tech graduate with over 10 years of hands-on experience, including foundational work in the autonomous driving sector of German automotive industry, I partner directly with clients to solve their toughest technological challenges. I am committed to writing clean, efficient, and test-driven code, ensuring your project is built for scalability and long-term success. Here's where my expertise lies: ✅ Intelligent AI, LLM & Agentic Systems Generative AI & LLMs: I architect advanced solutions using the OpenAI API, Gemini, Llama 3, and custom models, specializing in Retrieval-Augmented Generation (RAG) for powerful, context-aware applications. Agentic AI: I build autonomous AI agents that can reason, plan, and execute complex tasks. Full-Stack ML: I manage the entire machine learning lifecycle, from data processing and model training (YOLO, TensorFlow, PyTorch) to robust deployment. ✅ High-Performance Computer Vision (CV) Algorithm Optimization: I have proven experience in optimizing state-of-the-art detection, tracking, and stereo vision algorithms for maximum performance on edge devices. OpenCV, NVIDIA Jetson & DeepStream: My expertise includes deploying real-time vision applications using the complete NVIDIA toolkit, including FFMPEG, GStreamer, TensorRT and DeepStream. ✅ Robust Embedded Systems & Software C++ & Qt Development: I craft high-performance, cross-platform applications with clean C++ and the Qt framework. Embedded Linux & Hardware: I am highly adept at developing for a wide range of platforms, including ROS, Nvidia Jetson, STM32/STM32MP1, Raspberry Pi, and BeagleBone. Protocol Specialist: I have worked on numerous communication protocols like CAN, CANFD, SomeIP, TAPI, Flexray, RSMP, BACnet, OPCUA, MQTT, TCP/IP, UDP/IP, RSTP, ONVIF and many others. When you hire me, you are partnering with a dedicated, top-rated expert who is personally invested in delivering results.

I help early‑stage hardware startups and product teams turn unclear ideas into real, testable prototypes and production‑ready designs — without open‑ended development or wasted spend. I work through fixed‑scope, time‑boxed sprints designed to de‑risk critical technical decisions early, before manufacturing costs, timelines, or complexity spiral. What clients bring me in for: -Building functional hardware prototypes that can be tested, demonstrated, or quoted -Design‑for‑manufacturing (DFM) reviews before committing to tooling or vendors -Simplifying mechanical and electronic designs to reduce cost and assembly risk -Unblocking stalled hardware projects where progress has slowed or stopped -Providing experienced, senior‑level technical input without a full‑time hire This works especially well when a core engineering team already exists but needs targeted, focused support to move forward confidently. How I usually work: Engagements typically start with a fixed‑scope prototype or DFM sprint (usually 2–4 weeks). Sprints are clearly defined up front and may include: -Review of existing CAD, BOMs, and system architecture -Prototype development or focused integration troubleshooting -Identification of cost drivers, assembly risks, and design bottlenecks -Practical recommendations to simplify designs for manufacturing and scale -A clear next‑step roadmap so teams know exactly how to proceed This approach keeps work efficient, predictable, and aligned with real‑world manufacturing constraints. Background I have 16+ years of experience building and shipping real hardware products across robotics, medical devices, and connected systems. I’ve also been a founder, which means I design with commercial reality, cost, and timelines in mind — not just technical elegance. Examples of recent work: -Taking early‑stage hardware concepts to functional prototypes used for fundraising and vendor quotes -Delivering CAD and BOM packages that reduced downstream manufacturing risk -Resolving stalled mechanical / electronics / firmware integrations to get teams moving again Ongoing roles Ongoing advisory or fractional senior engineering roles are considered only after an initial sprint, and only when scope, authority, and expectations are clearly defined. Fit If you’re looking for open‑ended development or task‑by‑task execution, I’m probably not the right fit. If you want focused progress, clear decisions, and a realistic path to manufacturing, I’m happy to talk through what’s blocking you and whether a short sprint makes sense. Skills / Keywords: Prototype engineering | Product design | Design for manufacturing | CAD (Fusion 360, SolidWorks, Inventor) | BOM & vendor readiness | Embedded systems (ESP32, Arduino) | PCB integration | Rapid prototyping | Mechanical + electrical integration

✅ TOP RATED Embedded Systems Developer ✅ Specialized in developing firmware for BLE (Bluetooth Low Energy) devices, particularly those based on Nordic nRF5x SoC. My skills extend across various platforms including Nordic nRF51, nRF52, nRF53, nRF54, nRF9160, STM32Fxxx, STM32Lxxx, STM32Hxxx, STM8 series, Espressif ESP32, ESP8266, and many others. 🚀 Product Design Consulting 🚀 Bringing your ideas to life through practical and innovative solutions. I specialize in guiding projects from concept to market, providing expertise in technical design, selecting hardware components, firmware architecture, prototyping, production optimization and project management. 🛠️ Comprehensive Peripheral Knowledge 🛠️ I have hands-on experience with a wide range of peripherals such as sensors (IMU, infrared, capacitive, proximity, temperature, humidity, color, light, etc.), touchscreen displays, cameras, smartcards, EEPROM and RAM memory ICs, SD cards, 3G/4G modems, GPS receivers, RF transceivers handling wireless protocols including WiFi, UWB, LoRa, Zigbee, etc. 💎 Bluetooth Low Energy Wizard 💎 Deep knowledge of the Nordic nRF5x SoC, along with BLE protocol in general, allows me to efficiently design and develop fully functioning firmware ensuring highest performance with minimized power consumption. Whether it’s a simple gadget or more complex IoT system, when it comes to BLE, I’m THE guy. Furthermore, I wrote my master’s thesis on BLE mesh protocol, also utilizing nRF52. 📩 Let’s Bring Your Ideas to Life 📩 Reach out to me with details about your project, and let’s collaborate on transforming your vision into reality. I’m enthusiastic about embracing new challenges and am committed to exceeding your expectations.

I'm immersed in the world of embedded systems, particularly in the realm of IoT-based digital device development. Over the past 4 years, I've been diving deep into the intricacies of designing and implementing these devices. My focus extends to areas like PCB design using (Altium ,kicad,Esay EDA), 3D modeling for physical components using (Solidworks), firmware development using (Keil uvision,Cube ide, Cube MX, and Arduino), and even delving into the realm of PLCs. It's an exciting journey, exploring the convergence of technology and creativity in this ever-evolving landscape.