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Rating is 4.7 out of 5.
4.7/5
based on 1,249 client reviews
  • US$40 hourly

    • 5.0/5
    • (18 jobs)
    I am an expert Linux Embedded Programmer, Linux/ARM BSP/firmware engineer (10+ years). ◉ Prototype Development kit: Raspberry Pi, Beaglebone, IMX6 and IMX8, Quectel AG35 EVB, NanoPi Air, OrangePi Win, ESP32, Arduino UNO R3, STM32, Variscite VAR-SOM-MX93 ◉ Have solid knowledge of the standard interface such as I2C, SPI, UART, CAN, RS232, USB Host/Device, Ethernet, SDCard ◉ IoT devices with wireless connectivity such as LTE, BLE, WIFI, GPS. ◉ Modem Quectel: Automotive AG35, 5G RM520N ◉ Good experienced with Audio Codec chips: TI(TLV320AIC3109), ADAU1961WBCPZ ◉ Solid experience with U-boot porting, BSP, Linux kernel, Device drivers development/optimization for the small Linux SoC boards. ◉ Yocto, OpenWRT, Buildroot ◉ OTA: swupdate, mender, rauc ◉ Cybersecurity ◉ Chipset: Allwinner A64, Allwinner H3, NXP i.MX6, Quectel AG35, Qualcomm MDM9x07 ◉ Language: C/C++, Python, Bash scripting, Golang ◉ Framework: gstreamer, boost Our key goal is to deliver high-class products and services to our clients. A combination of long-term experience, and perfect communication allows us to work with clients all over the world.
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    Blockchain
    Bash
    Kernel
    Blockchain Development
    Automotive
    Linux
    OpenWrt
    Driver Development
    Embedded Application
    Embedded Linux
    Sensor
    Embedded C
    C
    C++
  • US$108 hourly

    • 4.5/5
    • (150 jobs)
    Thank you for taking the time to view my profile. I am an electrical engineer with a background in hardware design and software development. I specialize in circuit design, PCB fabrication, and embedded systems programming. I also provide enterprise software engineering and web development services with a focus on control systems engineering. I also specialize in digital signal processing and machine learning for data, image, and audio processing. I'm happy to help you take your idea to the next level and beyond! I consider myself an engineer, inventor, designer, and artist. I love to find solutions to complex problems, invent new things, and test what is possible! Services: -Application development -Circuit design and PCB layout -Embedded systems programming -Unity Development -Web development -Database engineering -Project management -Technical writing -Master builder :)
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    Unity
    Electronic Design
    Article Writing
    OpenCV
    C#
    Power Electronics
    SQL
    Machine Learning
    Technical Writing
    PCB Design
    RF Design
    Python
    C++
    nRF52
  • US$80 hourly

    • 4.9/5
    • (92 jobs)
    With over 10 years of expertise in DevOps Engineering and mobile app development, I've earned the trust of 70+ clients worldwide, delivering more than 28,000 hours of exceptional service. My diverse skill set allows me to bridge the gap between infrastructure and application development, offering a comprehensive solution for your technical needs. I have consistently delivered outstanding results in both domains by: DevOps Engineering: 🚀 Achieving a 75% reduction in change failure rate 🚀 Increasing deployment frequency by 75% 🚀 Reducing lead time for changes by 80% 🚀 Decreasing mean time to recovery by 65% Mobile App Development: 🚀 Developing high-quality mobile applications with Flutter and Xamarin 🚀 Utilizing robust persistence solutions and effective networking techniques 🚀 Employing architectural patterns for scalable and maintainable codebases Why choose me? 💯 100% positive testimonial rate 🏆 Top Rated Plus Upwork Enterprise Talent Clouds ⭐ Total of 10+ years mixed of mobile development and AWS cloud computing Certifications: 🎖 AWS Certified ― DevOps Engineer (Pro), Solution Architect & Certified Developer 🎖 CKA Certified ― Certified Kubernetes Administrator 🎖 Xamarin Certified ― Mobile Professional and Certified Mobile Developer Tools and Technologies I Excel In: DevOps: • Automation: Jenkins • Cloud: AWS, Google Cloud Platform • CI/CD Pipeline: CircleCI, GitlabCI, GithubAction, Nexus, Jfrog • Version Control: Git, GitHub • Configuration Management: Kubernetes, Ansible, Terraform • Testing: Selenium, Playwright • Monitoring: Prometheus, Loki, ELK, Datadog, Grafana • Code Quality and Security: SonarQube, Checkpoint, Vault • Distributed Streaming: Kafka, Zookeeper, Flink Mobile App Development: Flutter: • Persistence: Shared preferences, sqflite, sembast, Cookiejar, mmkv_flutter • Networking: Dio, Flutter Downloader • Image: Cached Network Image, Bitmap, Photo View • Architecture: Provider, BLoC, MobX, GetX • TDD: Mockito, Flutter Widget Test • Ops: Bitrise, AppCenter, AWS Xamarin: • Persistence: Realm, SQLite.NET-PCL, Akavache, PCL Storage • Networking: Flurl, Refit, ModernHttpClient, Reachability, Fusillade • Image: Splat, EZ-Compress, NGraphics • Architecture: MvvmCross, Prism, ReactiveUI, Ninject • UI: Syncfusion Components, Telerik, Flex, OxyPlots • TDD: FluentAssertions, NBehave, NUnit • Misc: AutoMapper, NodaTime, Humanizer, Polly Not to mention, my extensive experience in both DevOps and mobile app development ensures you get two experts for the price of one. Ready to transform your technical operations and develop top-notch mobile applications? Let's work together to streamline your processes and deliver exceptional results. Reach out today and let's start turning your vision into reality!
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    Bluetooth LE
    Amazon ECS for Kubernetes
    Containerization
    Docker
    Kubernetes
    Clean Architecture
    Universal Windows Platform
    DevOps
    Dart
    Map Integration
    Amazon Web Services
    Flutter
    Xamarin
  • US$150 hourly

    • 5.0/5
    • (15 jobs)
    🙋 𝗡𝗲𝗲𝗱 𝗮𝗻 𝗮𝗽𝗽 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗕𝗟𝗘 𝗼𝗿 𝗜𝗼𝗧 𝗱𝗲𝘃𝗶𝗰𝗲? 𝗧𝗵𝗲𝗻 𝗜 𝗮𝗺 𝗿𝗲𝗮𝗱𝘆 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱 𝗶𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂. I'm Daniel Reiling - a Senior Mobile App Developer based in Dallas Texas (🤠 🇺🇸) and for the past 10 years I have created more than 25 𝙥𝙪𝙗𝙡𝙞𝙨𝙝𝙚𝙙 𝙖𝙥𝙥𝙨 used by 𝙢𝙤𝙧𝙚 𝙩𝙝𝙖𝙣 1 𝙢𝙞𝙡𝙡𝙞𝙤𝙣 𝙪𝙨𝙚𝙧𝙨! I've helped business owners & entrepreneurs successfully launch their BLE/ IoT mobile apps for ideas ranging from 𝙩𝙚𝙡𝙚𝙝𝙚𝙖𝙡𝙩𝙝 & 𝙝𝙚𝙖𝙡𝙩𝙝𝙘𝙖𝙧𝙚, 𝙫𝙚𝙝𝙞𝙘𝙡𝙚 𝙨𝙮𝙨𝙩𝙚𝙢𝙨, 𝙖𝙞𝙧-𝙦𝙪𝙖𝙡𝙞𝙩𝙮 𝙘𝙤𝙣𝙩𝙧𝙤𝙡, 𝙛𝙞𝙩𝙣𝙚𝙨𝙨 apps, and more! Finding the right developer on Upwork can be overwhelming. That's why I am always available for 𝗮 𝗳𝗿𝗲𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝘃𝗲 𝗰𝗮𝗹𝗹 so we can discuss your mobile app project in detail. I only take on projects where I know I can provide value. So you can depend on me being straight-forward with you, and when I don’t think we are a good fit I will point you in the right direction. And if we do work together, I promise to give you the 𝙨𝙚𝙧𝙫𝙞𝙘𝙚 𝙮𝙤𝙪 𝙙𝙚𝙨𝙚𝙧𝙫𝙚 when developing your mobile app: 🔁 Flexible pricing terms 📅 Weekly updates 🛠️ 100% custom-tailored solutions ⏰ Deadline oriented 📝 IP assignment of the codebase & designs 🛡️ Post-launch bug-free warranty So if you are an entrepreneur who wants to launch an MVP (Minimum Viable Product) for your IoT/BLE device or a business owner needing to launch a mobile app for your equipment, I would appreciate the opportunity to speak with you. ======================================== 👉 𝐋𝐄𝐓'𝐒 𝐓𝐀𝐋𝐊 𝐀𝐁𝐎𝐔𝐓 𝐘𝐎𝐔𝐑 𝐏𝐑𝐎𝐉𝐄𝐂𝐓 👈 Are you ready to get started on your mobile app? Let's connect and craft a plan to make your vision a reality. I'm looking forward to bringing your mobile app to life, one line of code at a time. ======================================== 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐒𝐊𝐈𝐋𝐋𝐒 MOBILE APP DEVELOPMENT ✅ React Native ✅ Swift ✅ Kotlin ✅ Yarn ✅ Expo MOBILE APP DESIGN ✅ Figma DATABASE EXPERTISE ✅ Firestore ✅ Supabase ✅ PostgreSQL/Postgres ✅ Dynamo ✅ MySQL BLE/IoT EXPERIENCE ✅ NFC ✅ BLE ✅ WatchOS 𝐒𝐓𝐑𝐎𝐍𝐆 𝐂𝐎𝐌𝐌𝐔𝐍𝐈𝐂𝐀𝐓𝐈𝐎𝐍 𝐒𝐊𝐈𝐋𝐋𝐒 Along with my advanced technical skills, communication is one of my biggest strengths as an engineer. I take an honest approach to discussing the feasibility and limitations of a project and can communicate high-level solutions to clients of any technical ability. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: iOS Development, Android App Development, React Native, Swift, Native App Development, In-App Subscription, Google Maps API, Firebase, Bluetooth, Fitness Tracker, Mobile App Development, Health & Wellness, HIPAA, Mobile Device, iOS SDK, IoT, BLE
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    Internet of Things Solutions Design
    AI App Development
    AI Implementation
    HIPAA
    Health & Wellness
    Mobile App Development
    Fitness Tracker
    Google Maps API
    In-App Subscription
    Android App Development
    iOS Development
    Bluetooth LE
    Internet of Things
  • US$30 hourly

    • 4.8/5
    • (6 jobs)
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    Retrofit
    Firebase
    JUnit
    Data Binding
    JetPack
    Gradle
    Android SDK
    Clean Architecture
    Java
    Kotlin
    Android Studio
    Android App Development
    Android
    Mobile App Development
  • US$50 hourly

    • 4.9/5
    • (10 jobs)
    Experienced in the field of Embedded System Design. Main Area of Interests is Home Automation, Industrial Automation, IoT System Design, Embedded System Design, PCB Design, Firmware and Application programming. PCB Design Skills: Altium, Eagle, KiCad. Micro Controlllers: FPGA, CSR8670 , CSR8675, STM32, ESP32, NRF52840, NRF52832, Arduino, Raspberry Pi. Interface Protocol : SPI, I2C, I2S, DSI, UART, CAN, ModBUS, RS232, RS485. Communication: WiFi, Bluetooth, BLE, Bluetooth5, NFC, ANT, SUB-1GHz, ZigBee, 6lowpan, IR, LORA
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    Arduino
    ARM Microcontroller
    Embedded System
    WiFi
    PCB Design
    Arduino Firmware
    Raspberry Pi
    Firmware
    ESP32
    STM32
    nRF52
    Microcontroller Programming
    Embedded C
    Bluetooth LE
  • US$45 hourly

    • 4.7/5
    • (56 jobs)
    ✅ Upwork Top Rated Plus & Verified Mobile Developer As an expert developer with 10+ years of experience in mobile application development, one of my most-respected qualities is the ability to find solutions to any problem. In addition, I am committed to open and ongoing communication with my clients, as this is key to every successful project. All of my projects have contributed to the growth and development of my clients’ businesses and significant increases in their profits. Android Skills: Kotlin, Java, RxJava, Dagger2, ButterKnife, LiveData, DataBinding, Room, OKHttp, Retrofit, Volley. Flutter Skills: Bloc, Riverpod, Go Router, RxDart, GetIt, Pusher, Stacked, Dio, Mobx My advantages: • World-class quality and experience • 24/7 support • Bug-free guarantee through comprehensive testing • Timely delivery • Scalable and clean architecture • 100% money-back guarantee
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    Firebase
    Android App Development
    Java
    Kotlin
    iOS Development
    Dart
    NFC
    Flutter
    Smartphone
    Objective-C
    Swift
    Android
  • US$20 hourly

    • 4.9/5
    • (43 jobs)
    🌟 Top-Rated Upwork Professional 🧑🏻‍💻 9+ years of experience 📱 Android | Kotlin | Java | Jetpack Compose | Kotlin-Multiplatform| Flutter | WearOS | AndroidTV | 🚀 AI | ChatGPT | 💻 Firebase | VoIP | Linphone With over 9 years of extensive experience as an Android Developer, I specialize in native Android application programming with a strong focus on SCRUM/Agile workflow. 
 
I have a proven track record of delivering high-quality mobile applications in various domains, including:
 * Airline Domain * Banking Domain * Cargo Management Domain * Logistics Domain * Financial Domain * Social Media/Dating Domain with Video/Audio Chats * Location Tracking Domain
 My expertise in mobile development includes:
 * Programming Languages: Java, Kotlin * Architectural Patterns: MVVM, MVP, MVC * Design Patterns, Custom Controls, and REST API integration * Material Design, Mobile UI/UX, and Firebase integration (AdMob, Analytics, A/B testing, etc.) * Jetpack Compose, Jetpack Navigation * Firebase Realtime Database and Storage * Android SDK, NDK, Open Source, Support Libraries * Reactive Programming with rxJava and rxAndroid * Dependency Injection using Dagger, Kodein, and Hilt * Databases: SQLite, Room, Realm, Page * Network Libraries: Retrofit, OkHttp, Volley, ktor * Image Loading Libraries: Picasso, Glide * Crash Reporting and Analytics Tools: Crashlytics, Firebase, Fabric, LeakCanary, Timber * Other Libraries: Gson, AutoValue, JodaTime, AndroidJob, Google Services * Sockets/SignalR * Kiosk Mode * SonarQube code coverage * Kotlin-Multiplatform (One POC)
 * Wear OS & Smartwatch development * Mqtt In addition, I am an expert in the Linphone SDK, a powerful tool for building voice and video communication applications. I have in-depth knowledge of integrating and customising the Linphone SDK to create high-quality, real-time voice and video chat functionalities within Android applications. I am experienced in implementing Linphone's advanced features, including call management, audio/video codecs, encryption, push notifications, and more. Whether you need to develop a VoIP application from scratch or enhance an existing app with Linphone capabilities, I can provide the expertise you require.
 I have integrated various features and technologies into Android applications, including:
 * Beacons integration for proximity-based interactions * Calendar API integration for managing events and schedules * QR Code integration for scanning and processing QR codes * OCR (Optical Character Recognition) integration for text recognition and extraction
 For multimedia capabilities, I have integrated Video Chat using WebRTC, ZegoClould, Twilio, and Agora, as well as Audio Streaming. I am familiar with ExoPlayer for HLS Video Streaming (HTTP Video Streaming), RTSP Video Streaming, and DASH Video Streaming.
 Other skills and features I offer include Custom Calendar development, Media Gallery implementation, Background Download and Upload functionality, Tiff file format handling in Android, Live Streaming using Agora and ZegoCloud SDK, Deep Linking, LeakCanary for memory leak detection, and code annotations to improve the linting process.
 Experienced Kotlin Multiplatform Developer with a track record of delivering efficient cross-platform solutions. Proficient in Kotlin Multiplatform Mobile (KMM) and skilled in creating high-performance apps for Android, iOS, web, and more. Experienced Jetpack Compose Developer, proficient in creating dynamic, interactive, and modern Android UIs. Skilled in leveraging Jetpack Compose's power to build visually stunning and responsive applications. Over the years, I have developed many different types of iPhone and Android apps. These include: - Food delivery apps - On-demand apps - Home services apps - Handy man apps - Salon apps - Beauty apps - Taxi apps - Ride apps - E-commerce apps - Dating apps - Health and fitness apps - Travel apps - Video streaming apps - Fintech apps - Shopping apps - Telemedicine apps - Finance apps - Real estate apps - Social media apps - Chat apps - Business apps - Messaging apps - Online courses apps - Online education learning apps - Tutor apps - Hotel booking apps - Online grocery order apps - Telecommunication apps - VoIP apps - SIP Apps - Apps using the Twilio API I am fluent in English and passionate about Android development. Please feel free to reach out to me with any Android-related questions or projects. I would be pleased to help you bring your ideas to life
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    Mobile Device Management Software
    AOSP
    Java
    Smartphone
    iOS Development
    User Authentication
    Android
    JetPack
    Mobile App Development
    Wear OS
    In-App Purchases
    VoIP
    Firebase
    Android App Development
    Kotlin
  • US$65 hourly

    • 5.0/5
    • (18 jobs)
    "I have so much confidence in Varun’s skill levels and trust in his ability he is a joy to work with. If you choose Varun you will not be disappointed and I am more than happy to personally recommend him." - Jeremy R., FaceCrypt Pro "Varun is an outstanding IOS Developer & Very Professional. He quickly understands the requirements, and expectations and delivers as per the schedule. He handled our Project very smoothly. He is one of the top developers I worked with in my career. Looking forward to hiring him for my future projects.." - Naresh Ranga, Gokar "Varun is extremely knowledgeable and could complete his project in record time. He collaborates well with the team and takes ownership." - Smita, Houm Technologies Top Rated Plus iOS Developer with 10+ yrs of full-time work experience developing apps for iPhone, iPad, iPod, Apple Watch, and Mac. I am proficient in Swift and Objective C, and use Xcode, SwiftUI, UIKit, Cocoa libraries, and other third-party libraries to develop apps. - Consistently delivered projects on time and with great success resulting in happy clients and over 90% repeat business. - Received glowing reviews from various clients praising timely deliveries, efficiency, communication, and professionalism. - Trained engineers on various Apple technologies and have led development teams on many projects receiving accolades and awards I pride myself on creating fast, memory-efficient, well-thought-out apps that are a joy for users to use. I am self-motivated, target-oriented, and determined, with great love for building software. I love challenges and focusing on user experience and, keep learning about upcoming technologies and trends to suggest the best solutions to my clients. I have excellent communication skills and am a reliable, prompt, quick learner who loves to pay attention to detail. Do let me know in case of any questions. I am happy to assist. Multilingual - English, Hindi, Punjabi
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    iPad App Development
    Apple Watch
    Apple Watch Application
    App Marketplace
    Apple Xcode
    Core Data
    CloudKit
    iOS Development
    Mobile App Development
    iOS
    C++
    Swift
    Objective-C
  • US$27 hourly

    • 4.6/5
    • (22 jobs)
    ✅ TOP Rated ✅ 100% Job Success ✅ 5 Star Reviews ✅ 12+ Years Experience ✅One of the Best BLE | Bluetooth | Beacons | NFC | RFID | QR Code | Custom Sensors/ Gateway | WiFi | LoRa | nb-IoT based Service Provider 🚀 With over 12+ years of extensive experience in IoT-based Hardware, Firmware, Mobile, and web app development, I specialize in delivering cutting-edge solutions for diverse industries. My expertise spans across PCB designing, layout, Firmware programming, Android, iOS, Flutter, React for mobile applications, and Python, PHP, and Java for web applications. I am adept in Web APIs, backend architecture, SQL, NoSQL, and third-party API integrations, ensuring robust and scalable systems. ----------------------- 🎯 Domain served ------------------------ ✦ Healthcare & Fitness: Remote patient monitoring, smart medical devices, fitness tracking. ✦Automotive: Connected vehicles, Logistics & fleet management. ✦Automation: Smart home, industrial automation. ✦Agriculture: Precision farming, environmental monitoring, automated irrigation systems. ✦ Sports: Wearable technology, performance tracking. ✦Retail/Proximity: Beacon technology, personalized customer experiences, indoor routing, indoor navigation. ✦ Smart City & Environment: Waste management, Environmental monitoring, smart infrastructure ✦Industrial: Power automation, Smart Factory, Supply Chain Optimization, Worker Safety & monitoring - Construction, Remote monitoring & Control. ✦ Space: Satellite communication, telemetry systems. ✦ Defense: Rugged hardware and firmware, secure communication, surveillance systems, and tracking systems. ---------------------------------- 🎯 Key Projects in Domains ----------------------------------- ★ Healthcare Monitoring System: Developed a comprehensive mobile and web application for remote patient monitoring, integrating BLE and WiFi-enabled medical devices for real-time data collection and analysis. ★ Fitness Tracking Application: Developed a fitness tracking application that integrates with wearable devices to monitor and analyze user health and fitness data in real time ★ Connected Vehicle Platform: Engineered a robust IoT solution for fleet management, utilizing Bluetooth and GPS technologies for real-time tracking and data analytics. ★ Smart Home Automation: Created an intuitive mobile app for home automation, supporting various wireless protocols like Zigbee and RF for seamless device control. ★ Agricultural IoT Solution: Created an IoT system for precision farming, integrating environmental sensors and automated irrigation to optimize crop yield and resource usage. ★ Retail Proximity Marketing: Implemented a beacon-based proximity marketing system to enhance customer engagement and personalized shopping experiences. ★ Industrial Asset Tracking: Developed an indoor navigation and asset tracking system using BLE and RFID technologies to optimize asset management and enhance operational efficiency. ----------------------- 🔑Technical Skills ----------------------- ➠Mobile App Development: ◉ Platforms: Android, iOS, Flutter, React Native ◉ IoT Specializations: BLE, Bluetooth, Beacons, NFC, RFID, QR Code, Custom Sensors/ Gateway, WiFi ➠Web App Development: ◉Languages: Python, PHP, Java ◉Frameworks: Django, Flask, Laravel, Spring ➠Databases: SQL (MySQL, PostgreSQL), NoSQL (MongoDB, Time Series, Firebase) ➠ APIs Development: RESTful APIs, GraphQL ➠Backend Architecture: Microservices, Serverless architecture, Cloud computing AWS Services: EC2, S3, Lambda, RDS, DynamoDB, IoT Core, API Gateway, CloudFormation, CloudWatch ➠Hardware & Firmware Development, and Testing: ◉ Hardware: Product Designing, PCB designing, prototyping (Sample devices), and Mass Manufacturing on request. ◉ Firmware: Development for various microcontrollers and processors ➠IoT Expertise: ◉ Wireless Interfaces & Protocols: BLE, BT5, Mesh, LoRA, IrDA, CIR, RF, nb-IoT. ◉ Microcontrollers & Microprocessors: Qualcomm, Nordic, Texas Instruments, Cypress Semiconductor, Espressif Systems, NXP Semiconductor ------------------------- ⭐Why Choose Me? -------------------------- ◉ Proven Expertise: Over a decade of experience in IoT, mobile, and web app development. ◉ Innovative Solutions: A track record of developing innovative and scalable IoT solutions across multiple industries. ◉ End-to-end Service: Comprehensive service offerings from hardware design to software development and deployment. ◉ Client-Centric Approach: Dedicated to delivering solutions that meet client needs and drive business growth. Let's collaborate to transform your ideas into reality with cutting-edge IoT solutions. Feel free to reach out for a detailed discussion of your project requirements.
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    CodeIgniter
    WordPress
    Internet of Things
    Core PHP
    Firmware Programming
    iOS Development
    Android App Development
    Swift
    Flutter
    React Native
    Core Bluetooth
    iOS
    iBeacon
  • US$150 hourly

    • 5.0/5
    • (41 jobs)
    ✅ Upwork Top Rated & Verified Mobile Developer Apple App Store Rankings: #74 Overall | #5 Sports | #25 “What’s Hot” | #11 Productivity ✔︎ 5-star rated | 100% Job Success | 15+ years experience ✔︎ 75+ projects completed | 50+ apps published to Apple App Store / Google Play ✔︎ Extensive iOS and Android experience (Swift, Objective-C, Kotlin, Java) Creating a modern app is a challenging task, so having someone to help you navigate through the many complexities of not only creating the app, but also getting it live on the store is necessary. I realize how important this project is to you, and with my experience and track record I will be your advocate throughout the entire process. Communication is key to the way that I develop software. With proper communication you can feel confident that all aspects of the app development are moving in the right direction. I will keep you aware of the apps’ progress both with frequent communication by phone/email/Zoom and with consistent updates that can be downloaded and installed on your devices. You are the expert on what the app needs and only you know what is going to work for you and your users. As a former teacher, helping people reach their goals comes naturally to me. I’m looking forward to helping you create the next great app! ------------------------------------------------------------------------------------------------------ Apps developed in these app store categories: Productivity, Medical, Health & Fitness, Sports, Utilities, Education, Games, Music, Books, Business, Lifestyle, Reference, Shopping, News, Navigation, Photo & Video, Food & Drink, Social Networking, Entertainment Large clients include: Stanford University, Monster Digital, UC Davis, Allegheny Health Network, Schroeder Publishing Co, Washington Suburban Sanitary Commission, Cambridge Health Alliance, VICIS Sporting Goods **Additional information available at my company’s website twosuntraders.com.
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    iPad App Development
    Mobile App Development
    Android App Development
    iOS Development
    Firebase
    iOS
    Swift
    Objective-C
    iPadOS
  • US$150 hourly

    • 5.0/5
    • (6 jobs)
    I've had a long and varied career with a proven track record of delivering projects successfully for businesses small and large. Whether you need help with BGP, planning assistance for an infrastructure deployment, or a firmware project, my 20-plus years of experience pay off in terms of professionalism and dedication to a task. In my career, I have: - deployed critical network infrastructure with Cisco and Juniper gear with various routing and switching technologies - Built probe infrastructure to track latency changes on provider networks - written firmware in C to run on IoT devices talking to back ends running in AWS and Google. - Built a video-encoding pipeline which accepted work from video editors and published them for consumption. I have a wide breadth of technical knowledge, and a passion to excel. Let's work together to make your project a success!
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    ARM Cortex-M
    FreeBSD
    Amazon EC2
    Firmware Programming
    ESP8266
    ESP32
    Firmware
    Bash
    IPv6
    Linux
  • US$80 hourly

    • 5.0/5
    • (69 jobs)
    "One of the best services I got in the past 20 years. Super professional and knowledgeable. Much experience. Remarkable communication skills. Attentive immediately when I needed to. Solved 100% of my problems and gave me ideas for new directions. My business is growing thanks to him. Thank you, Jure" Do you have a crazy idea about a new device, sensor, wearable, or microcontroller in eHealth, Industry, Logistic, or Research? And you do not know if it is doable, how to start it, or what are possibilities? Yes, the Internet of Things world is strange. How about investing in a short consulting hour call with me? I will answer your questions, and I am competent to say that your idea won't work, but also suggest an alternative. My motto is "Fail fast without big consequences, learn something, repeat, succeed!" A resourceful, creative, passionate and highly driven individual with communication and project skills and out-of-the-box thinking. Keen on solving unique tasks. I come from a highly technical background (BSc in IT). I’ve been the owner and the CEO of various IT companies, which is how I started working in management and business development. I am still an ongoing PhD candidate in business and management. Multi-awards winning project/team leader and IoT consultant. Most of these consisted of proofs-of-concept (POC), prototypes, mobile apps and back-ends for IoT, Industry 4.0, healthcare (eHealth, telehealth, telemedicine), SmartCity, AAL, SmartHome with sensors (acc, ECG, GPS, environmental), beacons, controllers, wearables (smartwatches and smart-bands) and embedded systems (Raspberry PI, Arduino, ESP32), using WiFi, Bluetooth (BT, BLE, BLE Mesh), LoRaWAN, NB-IoT in several big EU funded R&D and other commercial projects. Eurostars Eureka IoT evaluator. Solutions: - SandBox.engineering - SandBox is OT and IT IoT Engineers’ Swiss Army Knife. It provides a controlled learning, testing, and experimentation environment, enabling users to acquire domain expertise and confidently evaluate different vendor solutions. - IoTool.io - the multi-awards winning IoT solution and a platform incorporating Client / Dashboard / Gateway / Cloud / API all on the Smartphone, supporting more than 100 different devices using Bluetooth. - IoChat.io - the highly secured, self-deployed in-premises text, audio, video chat, screen and file sharing WebRTC solution used in hospitals and nursing homes, for patient and doctor communication or as a general-purpose video conferencing system, easily integrated into any platform, - IoTconcept.team - fast agile IoT prototyping, - CrowdSensing.mobi - the smartphone platform used by a large, spread-out group of participants to collect and receive reliable data from the field. I have a fairly unique skill-set that will help your business by combining your needs and wishes (product and IT) with your business end. Sometimes, I wasn't smart enough to know that I couldn't do it, so I did it. 😊
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    Android App Development
    Core Bluetooth
    Firmware Programming
    Healthcare IT
    Concept Design
    PCB Design
    Microcontroller Design
    Research & Development
    WebRTC
    React Native
    Mobile App Development
    Internet of Things
    Wearable Technology
    Prototyping
  • US$80 hourly

    • 4.7/5
    • (11 jobs)
    I am a passionate product developer with solid experience in electronic engineering. I've developed new products from ideas and implemented mass production. The main products are loT, motor controllers, smart homes, BMS devices, and various types of sensors. Especially, I am developing loT systems including hardware, software, and upgrading existing products to integrate into a cloud system. If you have a new idea and want to bring it reality, please feel free to contact me. You will get full services including design, development, prototyping, and mass production.
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    FreeRTOS
    Embedded System
    FPGA
    Firmware
    Electrical Design
    Internet of Things
    Microcontroller Programming
    Electronic Design
    Altium Designer
    PCB Design
    STM32
    Raspberry Pi
    Arduino
    ESP32
    Embedded Linux
  • US$27 hourly

    • 4.9/5
    • (134 jobs)
    ✅ TOP Rated ✅ 100% Job Success ✅ 5 Star Reviews ✅ 12+ Years Experience ✅One of the Best BLE | Bluetooth | Beacons | NFC | RFID | QR Code | Custom Sensors/ Gateway | WiFi | LoRa | nb-IoT based Service Provider 🚀 With over 12+ years of extensive experience in IoT-based Hardware, Firmware, Mobile, and web app development, I specialize in delivering cutting-edge solutions for diverse industries. My expertise spans across PCB designing, layout, Firmware programming, Android, iOS, Flutter, React for mobile applications, and Python, PHP, and Java for web applications. I am adept in Web APIs, backend architecture, SQL, NoSQL, and third-party API integrations, ensuring robust and scalable systems. ----------------------- 🎯 Domain served ------------------------ ✦ Healthcare & Fitness: Remote patient monitoring, smart medical devices, fitness tracking. ✦Automotive: Connected vehicles, Logistics & fleet management. ✦Automation: Smart home, industrial automation. ✦Agriculture: Precision farming, environmental monitoring, automated irrigation systems. ✦ Sports: Wearable technology, performance tracking. ✦Retail/Proximity: Beacon technology, personalized customer experiences, indoor routing, indoor navigation. ✦ Smart City & Environment: Waste management, Environmental monitoring, smart infrastructure ✦Industrial: Power automation, Smart Factory, Supply Chain Optimization, Worker Safety & monitoring - Construction, Remote monitoring & Control. ✦ Space: Satellite communication, telemetry systems. ✦ Defense: Rugged hardware and firmware, secure communication, surveillance systems, and tracking systems. ---------------------------------- 🎯 Key Projects in Domains ----------------------------------- ★ Healthcare Monitoring System: Developed a comprehensive mobile and web application for remote patient monitoring, integrating BLE and WiFi-enabled medical devices for real-time data collection and analysis. ★ Fitness Tracking Application: Developed a fitness tracking application that integrates with wearable devices to monitor and analyze user health and fitness data in real time ★ Connected Vehicle Platform: Engineered a robust IoT solution for fleet management, utilizing Bluetooth and GPS technologies for real-time tracking and data analytics. ★ Smart Home Automation: Created an intuitive mobile app for home automation, supporting various wireless protocols like Zigbee and RF for seamless device control. ★ Agricultural IoT Solution: Created an IoT system for precision farming, integrating environmental sensors and automated irrigation to optimize crop yield and resource usage. ★ Retail Proximity Marketing: Implemented a beacon-based proximity marketing system to enhance customer engagement and personalized shopping experiences. ★ Industrial Asset Tracking: Developed an indoor navigation and asset tracking system using BLE and RFID technologies to optimize asset management and enhance operational efficiency. ----------------------- 🔑Technical Skills ----------------------- ➠Mobile App Development: ◉ Platforms: Android, iOS, Flutter, React Native ◉ IoT Specializations: BLE, Bluetooth, Beacons, NFC, RFID, QR Code, Custom Sensors/ Gateway, WiFi ➠Web App Development: ◉Languages: Python, PHP, Java ◉Frameworks: Django, Flask, Laravel, Spring ➠Databases: SQL (MySQL, PostgreSQL), NoSQL (MongoDB, Time Series, Firebase) ➠ APIs Development: RESTful APIs, GraphQL ➠Backend Architecture: Microservices, Serverless architecture, Cloud computing AWS Services: EC2, S3, Lambda, RDS, DynamoDB, IoT Core, API Gateway, CloudFormation, CloudWatch ➠Hardware & Firmware Development, and Testing: ◉ Hardware: Product Designing, PCB designing, prototyping (Sample devices), and Mass Manufacturing on request. ◉ Firmware: Development for various microcontrollers and processors ➠IoT Expertise: ◉ Wireless Interfaces & Protocols: BLE, BT5, Mesh, LoRA, IrDA, CIR, RF, nb-IoT. ◉ Microcontrollers & Microprocessors: Qualcomm, Nordic, Texas Instruments, Cypress Semiconductor, Espressif Systems, NXP Semiconductor ------------------------- ⭐Why Choose Me? -------------------------- ◉ Proven Expertise: Over a decade of experience in IoT, mobile, and web app development. ◉ Innovative Solutions: A track record of developing innovative and scalable IoT solutions across multiple industries. ◉ End-to-end Service: Comprehensive service offerings from hardware design to software development and deployment. ◉ Client-Centric Approach: Dedicated to delivering solutions that meet client needs and drive business growth. Let's collaborate to transform your ideas into reality with cutting-edge IoT solutions. Feel free to reach out for a detailed discussion of your project requirements.
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    NoSQL Database
    Python
    Product Development
    Internet of Things
    Wearable Technology
    nRF52
    NFC
    Firmware
    Hardware Design
    React Native
    Flutter
    iOS Development
    Android App Development
  • US$25 hourly

    • 5.0/5
    • (4 jobs)
    Greetings!! Thank you for visiting my profile! Over the last 6+ years, I've worked on both native iOS and Android apps, using Test Driven Development to deliver apps that are streamlined and lag-free. Expert at creating apps based on customer specifications, recommending application changes to create more efficient programmes, and upgrading existing apps to make them more useful. Corporate and industrial applications are my specialty. When it comes to quality apps that handle the complexity of your business, I can assure you that you will not find a developer like me who can make complex solutions in the simplest way possible. In my projects, I use cutting-edge technologies to make development easier and faster. ⏩My primary skills: ✔ Flutter ✔ React Native ✔Android Studio ✔Android SDK ✔ Google Maps, Mapbox ✔ Testing: XCTest, JUnit ✔ Core data, RealmDB ✔ Twilio integration ✔ QR and Barcode scanning ✔ Apple Push Notifications ✔ Payment Gateways ⏩Here are some reasons why you can choose me over other freelancers: ✅Great communication skills with both written and verbal English. ✅ Respond quickly on another side of the globe with almost 100% availability. ✅ Five years of industry experience ✅ Ability to understand the job requirement quickly and provide suggestions to make the product better. ✅ Ability to define the work scope clearly and provide a clear and realistic deadline. ✅ I will provide unlimited revisions of work until you are 100% satisfied Your suggestions are priceless. Their implementation must be same. It would be my delight to become a reliable partner that can oversee the entire development process from start to finish, as well as provide ongoing maintenance and support. Please contact me so that we may explore how we can collaborate to FULLY satisfy your business needs! Cheers!!
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    Flutter Stack
    Mobile App
    Android SDK
    Smartphone
    Mobile App Development
    API Integration
    Dart
    iOS Development
    Android
    iOS
    Android App Development
    Flutter
    React Native
    Android Studio
    Hybrid App Development
  • US$70 hourly

    • 4.3/5
    • (24 jobs)
    🏅Top Rated Plus(Top 3% of performers on Upwork.) 🏅Top Rated(Top 10% of talent on Upwork) 🏅5+ years of experience Extensive success developing for both native and cross-platform for individual and enterprise clients. Expert development for iPhone and iPad using Swift, Objective-C, and C#. I have launched my apps into the App Store, and I have worked with individuals and larger companies on apps from MVP to the App Store. I have over five years' worth of experience, including at globally known Fortune 500 companies such as Daimler Trucks North America and CVS Health. How I can help you: - Build an app from ideation to MVP and beyond - Revive, update or fix existing applications in need of care - Integrate new or existing applications into popular back-ends like Firebase - App store submission and approval - Maintenance and bug fixes Contact me if you're working on any exciting projects!
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    OCR Algorithm
    Apple Xcode
    Mobile App Development
    iOS Development
    Flutter
    Dart
    Core Bluetooth
    Augmented Reality
    UIKit
    iOS
    Objective-C
    Swift
    Firebase
  • US$110 hourly

    • 4.9/5
    • (23 jobs)
    I am a Firmware Engineer with 6 years of experience working on products in industries such as automotive, agriculture, medical, and consumer electronics. My main area of expertise is IoT, using technologies such as LTE, BLE, and WiFi to create connected devices. I am most proficient with ESP32 and STM32 microcontrollers, but I also have experience working with PIC, AVR, and TI microcontrollers.
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    FreeRTOS
    Arduino
    Python
    Embedded C
    Firmware Programming
    STM32
    ESP32
    Sensor
    Raspberry Pi
    Microcontroller Programming
    Firmware
    Internet of Things
  • US$120 hourly

    • 5.0/5
    • (23 jobs)
    I am a full stack and hybrid mobile app developer with experience building complex responsive web apps, websites and mobile applications. My work has involved using: - Angular - Javascript/Typescript - NodeJS - HTML5 - CSS/SCSS - PHP - JQuery and working with Front-end and backend frameworks such as: - Ionic 2+ - Express - Slim PHP - Vue JS - Stencil JS and integrating NoSQL and SQL databases. I also have advanced knowledge of Git and its integration with Continuous integration and deployment. Testing has become a key component in my development work and I seek to ensure that all projects utilize integration and unit testing. My main interest lies in working with healthcare apps and services as this enables me to utilize my experience and expertise as a physician. However, I have learnt to appreciate the wisdom that can be garnered while working in other sectors and as such I am open to exploring any opportunity that will expand my boundaries and enable me to develop new skills and meet new awesome people.
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    Android App Development
    iOS Development
    Ionic Framework
    Android
    iOS
    Flutter
    CI/CD
    AngularJS
    TypeScript
    JavaScript
    WordPress
    PHP
    Angular
    CSS 3
    HTML5
  • US$81 hourly

    • 5.0/5
    • (29 jobs)
    Professional Summary: Electrical Engineer experienced in developing electronic products and automated test equipment/ procedures for commercial/industrial and aerospace/defense programs. Responsibilities include application of electrical hardware experience, analog / digital circuit design including simulation, validation, project management, efficient documentation including new product cost and excellent oral / written communication skills. Professional Experience: Rexnord Industries LLC (Zurn) 03/2018 –Present Cary, NC Senior Electronic Hardware Design Engineer • Lead hardware design of PCBs for IOT products serving the water control market (pressure relief valve monitors, sensor operated flush valves and faucets, incorporating RF LoRa, USB, Ethernet, I2C, serial, SPI, CAN, etc.). Responsibilities include technical specifications, system design, schematic capture, power management including DC-DC conversion and motor/solenoid control, PCB layout, design for cost, design for test, design for manufacturability, RF performance, EMC and FCC compliance, product safety, Firmware and programming, design validation testing and system integration. ARCA Technology LLC 01/2016 -03/18 Mebane, NC Electrical Engineer • Performed hardware/firmware design of PCBs for teller assisted self-service machines (cash, coin, cards, checks, printers, near field communications, Bluetooth, WIFI, ethernet, USB, serial, etc.). Responsibilities include requirements development, technical specifications, schematic capture, PCB layout, power management, motor control, configuration management, prototyping, design validation testing and systems integration. Ensign Bickford Aerospace and Defense Co. 2010 - 2015 Simsbury, CT Electrical Design Engineer • Lead electrical design of cross functional team (Requirements, schematic capture, simulation, power conversion via numerous topologies, PCB layout, embedded firmware (embedded C, ASM), high voltage DC/DC boost converter design (3.6 VDC to 1200 VDC, 1 W)) for explosive plug used in oil and gas exploration. • Responsible for microcontroller firmware (embedded C, ASM) and hardware design of custom automated test stands utilizing custom printed circuit board designs, and various National Instruments data acquisition components in support of electrical safe and arm devices (ESADs) to perform flight termination on several missile platforms for Raytheon and Lockheed Martin. • Performed electrical design of numerous defense and aerospace applications involving peripherals such as I2C, SPI, USB, ETHERNET, etc. Responsibilities included MIL-STD-810, MIL-STD-461 compliance and conformance to MIL- HDBK- 217. Examples include, shoulder mounted missile (SMAW II logic control unit for USMC) (3 VDC to 1500 VDC, 10 W) and special test equipment for firing actuators aboard several missile platforms, etc. United Technologies Corporation (UTC Power and Pratt and Whitney Power Systems) 2007 – 2010 South Windsor, CT Electrical Design Lead Engineer • Lead the electrical design of the PURE CYCLE, 280 kW, 480 VAC, 3 phase, power plant including power conversion (AC to DC and DC to AC), control firmware (embedded C) and instrumentation. • Validated electrical power generation and control systems for compliance with NFPA 70e (NEC), UL-508, UL-1741, IEEE-519 and IEEE 1547. • Served as the lead technical liaison for electrical systems for contract manufacturers, integrators and customers.
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    Microcontroller Programming
    Digital Electronics
    Embedded System
    Firmware Programming
    Testing
    PCB Design
    Hardware Design
    ESP32
    Hardware Prototyping
    Electronic Design
    Product Development
    Product Design
  • US$80 hourly

    • 5.0/5
    • (5 jobs)
    I am a professional hardware engineer with more than 10 years of experience in embedded, RF design, BLE, WiFi, LoRa, and IOT devices. I got an experience of working through complete product development life cycle and have lead multiple teams in several projects. I got expertise on following area: -- Programming Languages: 1. Embedded C , C++ 2. C# 3. Python, Javascript 3. Assembly -- CI/CD 1. Bitbucket 2. GitLab 3. Github --Revision control 1. SVN 2. Github -- Documentation and project management 1. Confluence 2. Wiki 3. JIRA 4. sublime -- Firmware Development: 1. Wifi(IEEE 802.11 a/b/g/n/r), 802.1x(Enterprise mode), BLE 2. BLE stack L2CAP, LMP, HCI, GATT, ATT, GAP, SMP protocols 3. GSM based on 3GPPP standards and protocols 4. SPI, I2C, UART, RS485, USB communication protocols -- Application Development: 1. Bare-metal application 2. RTOS (FreeRTOS, Nucleus, ThreadX, MbedOS(ARM)) -- Embedded Platforms: Worked with bith 8-bit, 32-bit and 64-bit architectures 1. Nordic nrf52832, nRF52840, nRF51422, nRF9160 2. STM32, ARM 3. (TI) TM4C123xx 4. PIC18Fxx, dsPIC33Fxx, 5. Arduino, AT8051xx etc. 6. ESP32 7. Beaglebone 8. Raspberry Pi 9. Qualcomm QCC/5121/5124/3034/3044 -- Protocol Analyzer and debugger 1. Code-Worrior 2. j-link 3. D-Stream 4. St-link 5. SPI/I2C, USB protocol analyzer 6. Wifi, BLE Wireshark protocol analyzer -- IDE's 1. IAR Workbench 2. Eclipse, VSCode 3. KEIL uVisison 4. MPLAB, MPLABX 5. Arduino, ESP-IDF 6. SEGGER EMBEDDED STUDIO 7. Simplicity Studio 8. QDM I am an engineer with extensive experience in several platforms for developing hardware and firmware. If you have any related projects, please let me know. Regards,
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    Digital Marketing Strategy
    PIC
    Digital Marketing Materials
    Firmware Programming
    Microcontroller
    ARM Cortex-M
    FPGA
    Arduino
    Electrical Engineering
    Circuit Design
    PCB Design
    STM32
    Digital Marketing
    Freelance Marketing
    Embedded System
    Data Science
  • US$57 hourly

    • 4.9/5
    • (15 jobs)
    Good working day! I'm here to provide systems work, live, update, and development. I want all the products I develop see the light of day, sell successfully, and become better for users and owners. If you ask me what is the meaning of life, I'll answer – in programming. So, my job is programming, my hobby too. By the way, if you need a first-class programmer – I'm here. I’ve been providing excellent firmware development services for over 10 years. It confirms my status 100 % TOP rated + on Upwork. Perfectly functioning devices and satisfied customers will speak better for me. Do you want to save your time on pointless meetings where engineers ask you what to do instead of doing it? Do you want to increase your income through our productive cooperation? Do you want a perfect, functioning, advanced product that you and your customers will like? I'll help you find a solution for your problems as soon as possible to implement them at a high level. The main goal is to help you achieve great success and make results. The most important thing is the product. It will be innovative, progressive, fresh, and efficient. I'll develop firmware, support it, and add new features, thus improving the product and the owner's profit. I'm always open to communication and find it useful. The more feedback I receive from you, the more I'll give you in return. Then I would like to tell you exactly how the cooperation goes. And now you can look at reviews of my work left by my clients on Upwork. I want you to understand the most important benefits that I can provide you are time and freedom. I can independently make decisions without disturbing the customer. You can go about your business while your project is running. At the same time, I work on technical tasks and take responsibility for my actions. So, I offer long-term cooperation which means the full cycle of device development and support. Please note that the latest versions are released as soon as new features are added. Every next release brings us closer to the final version of the device. Eventually, I would like to give you a guarantee. Guarantee of 100% satisfaction with the result. Unfortunately, my resources are limited, so I don't take on many projects. If you have a clear understanding and vision of your project and want to start right now, just write to me. Let's talk, discuss, make a plan and grow your business. If you still have doubts about something, then I have a consultation service – where we’ll analyze all the issues together that will help you see the future of your project, understand the next steps, and possibly start our cooperation.
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    AWS IoT Core
    TCP/IP
    Firmware Programming
    Firmware
    C
    Real-Time Operating System
    Embedded System
    nRF52
    Arduino
    Embedded C
    Microcontroller Programming
    STM32
    ESP32
    AVR Microcontroller
  • US$50 hourly

    • 4.7/5
    • (58 jobs)
    Having 21 years of experience in handling complex firmware, IoT, web and mobile app based solutions. Worked with Samsung as Lead Engineer for the R&D (Digital Media) and Safeview SL as Product Manager. I have extensive knowledge with Web (Front End and Back End), Mobile Apps (Android/iPhone - Hybrid and Native), IoT and Embedded Software Development. On the technical side, I can handle solutions requiring following skills: 1. Embedded/Firmware software development 2. Backend development using Nodejs, Python/MySQL, MVC frameworks like Django/CodeIgniter/Laravel, developing web services and web APIs, integration of external RESTfull APIs like payment (PayTrace, CyberSource, USAePay, PayPal, Stripe, NMI, PayTrace, Authorize.net etc), accounting (QuickBooks Online/Desktop, Xero, Freshbooks), Twilio, shipping and any other as needed 3. Front end development using HTML5/CSS3, Javascript (custom and libs), JQuery, Bootstrap, Framework7, Angularjs and Reactjs 4. Mobile apps using Cordova/Phonegap, Android Native, Kotlin, iOS Native, Swift and IoT apps 5. All AWS related server deployments at AWS, Docker/Containers, Mails and DNS setups 6. Video Streaming platforms Have good communication, documentation and analytical skills and know how to motivate team for the longer-term team bonding.
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    Internet of Things
    Python
    Kotlin
    Internet of Things Solutions Design
    PHP
    Android
    iOS
    Laravel
    Product Management
    Raspberry Pi
    CodeIgniter
    iOS Development
    Swift
    MySQL
    React
    Node.js
    Intuit QuickBooks
    JavaScript
  • US$40 hourly

    • 4.9/5
    • (62 jobs)
    "Very professional team, it was a pleasure working with them on design of the system." "Quynh and his team were very communicative and skillful. I was very happy to work with Quynh. Highly recommended!" "Quynh and his team are absolutely phenomenal. He was professional in all aspects of this project and I can highly recommend him to anyone seeking AWS assistance." "Quynh and his team are great! Always available, always providing the right results. They even worked during their New Years' celebration, when my application had issues on production. Amazing guys!" 📞 Invite me to your job if you would like a FREE 15-minute initial consultation! 📞 Our core services: ✅ Building IoT Platforms (Mobile / Web) ✅ Tech Stack Selection for IoT Platforms ✅ IoT Consultancy ✅ Cloud-based IoT Solutions ✅ Edge Computing, IoT Gateways, and Hybrid Solutions ✅ Building IoT, computer networks, infrastructure, and system monitoring solutions ✅ End to End LoraWAN Solutions ✅ Home Automation, Smart Cities, Industrial Automation ✅ IoT Data Analytics ✅ Integration of Blockchain in IoT. ✅ Integration of AI in IoT. ✅ Firmware Development for IoT Devices and Gateways 🌟 Expertise 🌟 Internet of Things Platforms 📌 Monolithic and Microservices Deployment 📌 Infrastructure monitoring and IT Support 📌 Integration with MQTT, HTTP, LoRaWAN, The Things Network, Sidewalk, LTE-M, NB-IoT, WebSocket 📌 Custom and Interactive Dashboards 📌 Tenants and Customers Management 📌 Device Provisioning & Claiming, OTA, MQTT Gateway Cloud IoT ✔️ AWS IoT Core (Fleet Provisioning, LPWAN, FleetHub), AWS Kinesis, Lambda, Greengrass, AWS IoT Analytics, Quicksight, SiteWise ✔️ Azure IoT (IoT Hub, Event Hub, Provisioning, Stream Analytics, Azure functions, API) ✔️ GCP (Cloud Pub/Sub, VertexAI) ✔️ Experience in designing data pipelines and implementing scalable architectures for IoT. Development Boards ✔️ Raspberry Pi ✔️ Arduino Boards (UNO, Mega, IoT boards, MKR Series) ✔️ Espressif (ESP8266, ESP32 Series, NodeMCU) ✔️ Nordic (nRF9160, nRF52840, nRF52833) ✔️ STM32 ✔️ RAK, Sensecap, etc. Communication Protocols ✔️ MQTT (Mosquitto, EMQX, SSL/TLS, ACL, MQTT Security), AMQP ✔️ SNMP (Network Monitoring), ICMP ✔️ WiFi, BLE, ZigBee, Zwave ✔️ LoraWAN: 📌 Gateways And Sensors Onboarding. 📌 Installation and Configuration of LNS (Chirpstack, The Things Stack, Helium, LORIOT, AWS) 📌 Writing Uplink and Downlink Decoders for Sensors 📌 Use Cases: Smart Cities, Food Security, Smart Agriculture, Parking Systems, Air Quality Monitoring, Smart Water Metering, Energy Metering 📌 Worked with a variety of Gateways & Sensors i-e MultiTech Conduit, Kerlink Wirnet, Mikrotik, Milesight, Laird, Dragino, Senstick, Semtech Monitoring Solutions ✔️ Mobile application (Swift, Kotlin, Flutter, React Native) ✔️ Matter integration ✔️ Web application (ReactJS, VueJS, NextJS) Backend Integration 📌 Monolithic and Microservices Architecture (ECS, K8s, K3s) 📌 Languages: Python (Django, Flask), Typescript (NestJS, Serverless), Golang Infrastructure 📌 Terraform 📌 CloudFormation
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    Alexa Skills Kit
    Internet of Things
    Python
    PHP
    MQTT
    React Native
    Serverless Computing
    AWS IoT Core
    Google Cloud Platform
    React
    Vue.js
  • US$49 hourly

    • 5.0/5
    • (66 jobs)
    "brings new insights and plussed-up solutions, responsive and clear with top-quality work. Have already hired again!" ✅ Clients have been impressed by my professional approach, ability to complete tasks ahead of schedule, and deep knowledge of iOS development. ✅ Exceptional problem-solving skills, innovation, self-management and excellent communication abilities. ✅ An active contributor to GitHub. 10+ years✓ $200k+ earnings✓ 2000+ hours✓ iOS & watchOS✓ Individual freelancer✓ Selective client feedback: “…works well independently, brings new insights and plussed-up solutions, responsive and clear with top-quality work. Have already hired again!” “We knew we would need to rely heavily on our developer to be highly organised and innovative, and to very much self-manage the development process, and Theo delivered" “Excellent work - understood the task well, provided good feedback, completed work well within schedule.” “provide me with a very straight forward and well thought out plan” “Theo would be the best choice” Some of my key success areas are: ✅ Creating new apps from scratch ✅ Update or fix older and defunct apps written in Objective-C or Swift ✅ Usage and integrate with backend services such as REST ✅ Advise on feature possibilities and Apple App Store guidelines ✅ Bluetooth integrations ✅ Worked with HealthKit, CoreBluetooth, CoreGraphics, UIKit, SwiftUI, CoreLocation, In-app purchases, CoreData and skilled in many of the other iOS frameworks and open source frameworks. ✅ Skilled with UI/UX animation tools such as PaintCode and their effective use in CoreGraphics ✅ Skilled with AI technologies such as MyScript that analyse someone's handwriting ✅High client retention rate (80%+). Clients stick with me! ✅More than just fingers and hands that punch code If you are interested or need more info, let me know. Theo
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    Core Location
    Core Graphics
    Apple HealthKit
    Apple Xcode
    watchOS
    iOS
    Core Bluetooth
    iOS Development
    Swift
    UIKit
    iPadOS
    In-App Purchases
  • US$21 hourly

    • 5.0/5
    • (61 jobs)
    🌟 100% Job Success 🌟 80+ Successful project in “Mobile App Development” and "Web" Technologies 🌟 5 Star Rating ### Earned "✳TOP RATED PLUS" badge We specialise in Web and Mobile App, UI - UX design, and development technologies. While developing an application, we take special care about User Experience. -------------------- Core Expertise -------------------- - Mobile App Development - OTT App Development - Music App Development - eCommerce App/Web Development - Food Delivery App/Web Development - GPS Tracking App Development - Cab Booking App Development - Service base App/Web Development - Dating App/Web Development - Other Mobile Development ---------------------------------------- Skills of App development we offer ---------------------------------------- + iPhone / iPad / Apps Development + Android Apps Development + Native mobile application development + In-App Purchase + Braintree, Stripe, 3rd party payment library, All type of Payment Gateway + Social Networking integration + Push Notification, Silent Push Notification, and In-App purchase + Geo-Location/GPS, Location Management, Google Map + Music Player, Camera Integration + Uploading to server, Data Sync, Server XML API Call, JSON + Cloud Services: Firebase, Google Cloud Platform, Parse + QR Code, Bar Code + Video, Photo, and Camera + Familiar with PHP,MySQL,SQLite + Core Data, SQLite​ + Socket.ios + Core Animation + VPN Why us: 1. FREE! No Obligation consultation 2. FREE! 1 months bug support post-delivery 3. Testing team and Technical Architect to be involved in every project and without any extra fee. 4. Completely Flexible Payment Terms ****Send me a message to start the development today***
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    iOS Development
    Node.js
    Web Application
    WordPress
    Web Development
    Apple TV Application
    Mobile App Development
    tvOS
    React Native
    Flutter
    Hybrid App Development
    Native App Development
  • US$49 hourly

    • 4.3/5
    • (77 jobs)
    For the past 20 years, I have been engaged in the design and production of electronic devices, including wireless devices. During this period, I started with antenna design, designing and producing FMCW radar in each frequency band (including millimeter waves), and continued until the signal processing unit section. In addition, a wireless direction finding system with high measurement accuracy was developed based on phase interference correlation processing method, and a coordinate measurement system combining TDOA and GPSDO was developed. The operating frequency bands of these two systems are between 20 MHz and 6 GHz. In addition, he also developed a radar frequency band signal analysis and directional analysis system based on IFM and BM methods. The frequency range of this system is 2 to 18 GHz. Moreover, while developing wireless navigation devices that can perform GPS RTK and Heading, a precision inertial navigation system has also been completed. This heading is based on a GPS system and is not affected by surrounding algae. Moreover, with the advancement of high-speed PCB design for RF systems, high-speed signal processing circuits above 1GHz and various Android, Linux devices, etc. have been widely introduced into a field. The programs used in these processes include: - RF simulation and design program: CST Studio, ADS - PCB design program: Altium Designer. - Mechanical design program: Solidworks. - Signal processing programs: ISE, Quartus, Keil, MPLAB X, Arduino. Matlab, And developed intelligent lock with facial recognition and fingerprint recognition functions, and has sufficient experience in mass production, establishing a monthly production process of more than 10000. In this process, a procurement process for various elements, including RF elements, and a production and testing process for components have been established. Regardless of the type of product or the quantity, there is rich experience in overseas direct delivery. And, I can process various sourcing and delivery of various electronic components.
    vsuc_fltilesrefresh_TrophyIcon Bluetooth
    RADAR Construction Management RADAR
    Antenna Design
    RF Microwave Design
    Medical Device
    Power Electronics
    Embedded System
    Altium Designer
    Electronic Circuit Design
    Wireless Communication
    ESP32
    WiFi
    Multilayer PCB
    3D Design
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