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Hire the best Bluetooth Freelancers in the United States

Check out Bluetooth Freelancers in the United States with the skills you need for your next job.
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Clients rate Bluetooth professionals
Rating is 4.7 out of 5.
4.7/5
based on 160 client reviews
  • $94 hourly
    • 4.9/5
    • (16 jobs)
    I develop high quality iOS and Android mobile apps using Swift, Kotlin, Java, SwiftUI, Jetpack Compose, Firebase, and APIs as needed depending on project. Through my hard work and dedication to meet all project requirements, I've earned Upwork's Top Rated Plus rating! I am self-motivated, self-directed, dependable, reliable, and trustworthy. I've been an independent consultant for most of my career. I know how to conceive a project, get the work done independently, and successfully deliver the project. I excel at testing so when the project is done, it is done! No one likes to put together a large programming team where there are tons of duplicated effort and miscommunication. I can be your single-source developer for both Android and iOS phones and tablets! Most apps also need a back-end. No need for a separate web app programmer that can cause timeline problems and miscommunication! I can write the back-end utilizing Firebase then integrate it into all versions of your mobile app. Using a single source, you control the timeline, you avoid integration issues, and everything flows smoothly. You probably cut your delivery time in half! Every week, I develop mobile apps, cloud functions, and cloud tasks, mainly for Internet of Things using Bluetooth and Firebase. Every week, I am using: Kotlin Java Javascript, typescript, node.js (back-end) Swift Jetpack Compose SwiftUI Bluetooth (Android) Core Bluetooth (iOS) Firebase Auth (user authentication, login) Firebase Firestore (database) Google Cloud Functions Google Cloud Tasks (scheduled based on a trigger) Firebase Crashlytics Firebase and Apple push notifications Google sign-in Apple sign-in As an expert Mobile App Developer, other skills I can deliver: Flows, co-routines, async tasks, flow state. WiFi configuration: static IP, dns, enterprise, add and update. JSON serialization/parcelization. NFC tag reading. Develop Maven library. Network Service Discovery (NSD). Direct ipp open protocol for printers. REST - okhttp and retrofit expert for network calls, including calls to Amazon AWS. User accounts with encryption tokens. Encrypted keystore. Push notifications (Firebase, Apple, in-app). Silent package Installer and updater. Kiosks management. Google maps with location updates, custom map markers, annotated map markers. Custom User Interface features with custom graphics, backgrounds, themes, and styling. User authentication. Credit card validation. Stripe credit and debit card processing. Google Pay processing. Glide or Picasso image handling/transformation. Image upload as file or bitmap. Dark mode activation. Launch and welcome screens with terms of service. Multi-threaded environment solutions and multi-tasking co-routines. Dynamic updates of screens from incoming push notifications. Phone dial, messaging, camera photo-taking, gallery browsing. Backwards compatibility to older versions of Android. Forwards compatibility to latest versions of Android. Room database. App publishing on Google Play Store and Apple App Store. App testing on Firebase. Firebase/Maps API keys. Troubleshooting and expert debugging of crashes/bugs/memory leaks in legacy apps. Development environment: Gradle multi-flavor (multi-version) builds Github and bitbucket version control Slack or Jira team communication Figma wireframes Swagger REST API calls Github or Jira project management and collaboration Roll-outs to 50 million user install base A recent review on Upwork: "Stephanie did a superb job to make our Bluetooth hardware on-boarding via Android very reliable. She was able to find the corner cases and then find solutions for those corner cases! This was a difficult challenge as Bluetooth permissions, capabilities, and processes vary greatly between Android OS versions and devices. The on-boarding process is simple, elegant, and extremely user friendly. It has been an honor and pleasure working along side Stephanie." Other: Protocol Stacks, embedded systems, multi-tier networking systems Fortune 500 Java and C/C++ Trainer, Expert Witness Computer Science degree, Certified Project Management Professional Native English Speaker Available to work any timezone Background: I've used many protocol stacks: Point-to-point, TCP/IP, sockets, WiFi CDMA network, Bluetooth, other wireless networks. I've developed application systems with 4 tiers of communication layers: Device to Handheld, Handheld to PC, PC to mini-computer, mini-computer to mainframe. Embedded Systems: Transponder readings sent to handheld which then transferred data to desktop computer which interfaced to IBM mainframe. Cable system "set-top" box. Assembly code for micro-chips. Veriphone credit card readers with communication to mainframes/cloud. Java Trainer for Sun Microsystems (before they were bought out by Oracle) for 2 years. C/C++ Trainer for Intel University (part of Intel) for 2 years. Expert Witness in trial against a top insurance provider regarding their Java based application.
    Featured Skill Bluetooth
    Software Debugging
    Database
    API Integration
    Java
    Swift
    Push Notifications
    Firebase
    Android
    iOS Development
    Firebase Cloud Firestore
    RESTful API
    Android App Development
    Kotlin
    JetPack
  • $75 hourly
    • 5.0/5
    • (25 jobs)
    I am an embedded firmware engineer with interest and expertise in the field of embedded system design and control systems. I have worked with PIC micro controllers and M3 ARM processors. Currently I work with a company where we develop mass flow controllers to control the flow of gasses very precisely. It has a huge demand in semiconductor market.
    Featured Skill Bluetooth
    Core Bluetooth
    Android App Development
    Hardware Design
    PCB Design
    React Native
    Bluetooth LE
    iOS
    Android
    C++/CLI
    Wireless Communication
    Embedded System
    Arduino
    C
    Firmware
    Microcontroller Programming
    Embedded C
  • $70 hourly
    • 4.9/5
    • (26 jobs)
    🏆 Top Rated Plus 🏆 10+ years of experience 💡🧠 🛠️ crafting high-quality mobile solutions 💻📱 for iOS, Android, and Flutter. I don't just build apps, I architect 🎨 and lead the development of robust 💪🛡️, scalable software 📈 that solves real-world problems 🧩 and delivers exceptional user experiences 🌟. My Expertise: ✅ Flutter Architect: I've spearheaded successful migrations of native apps to Flutter, reducing development time and boosting performance. I'm proficient in building custom Flutter plugins, optimizing for web and mobile, and deeply understand Flutter's architecture and best practices. ✅ SDK & Plugin Development: I have a proven track record of creating multi-platform SDKs and plugins that streamline development and enhance functionality for other developers. My focus is on clean code, intuitive APIs, and seamless integration. ✅ Mobile-First Strategy: I'm passionate about creating mobile experiences that prioritize user engagement and satisfaction. I have a strong understanding of mobile design principles and UI/UX best practices. ✅ Technical Leadership: I've led teams, mentored developers, and fostered collaboration to deliver complex projects on time and within budget. I'm a certified Scrum Master with experience in Agile methodologies. My Skills: ✅ Languages: Swift, Objective-C, Java, Kotlin, Dart, C/C++, C# ✅ Platforms: Flutter, iOS, Android, Web ✅ Tools: Xcode, Android Studio, Git, CocoaPods, Firebase, RESTful APIs, GraphQL, MQTT, BLE, NFC ✅ Methodologies: Agile, Scrum, Mobile-First Design, Clean Architecture, SOLID Principles 🤝 Let's Collaborate! 🤝 I'm eager to apply my skills and experience to your next project. Whether you need a Flutter expert, a Mobile developer, an SDK developer, or a technical leader to guide your team, I'm ready to deliver results that exceed your expectations.
    Featured Skill Bluetooth
    Machine Learning
    Python
    Firebase
    MQTT
    C#
    C++
    Kotlin
    Java
    Swift
    Objective-C
    Dart
    Flutter
    Android
    iOS
  • $27 hourly
    • 5.0/5
    • (19 jobs)
    A dedicated Software Developer with over twenty years of experience professionally deploying full-cycle solutions. My latest experience is developing complex, market-oriented Android applications, converting Swift code to Kotlin, and troubleshooting bugs in Android applications. With expertise in Android engineering, I will resolve your app development needs while achieving the results expected from a senior professional. I am reliable in working with minimal supervision and always conduct thorough research before reaching out with questions.
    Featured Skill Bluetooth
    Tcl/Tk
    Electron
    Servoy
    Android Studio
    Android App Development
    UI Animation
    JavaScript
    Java
    Node.js
    Kotlin
    PHP
    Realm Database
    Transact-SQL
    Responsive Design
  • $75 hourly
    • 3.7/5
    • (31 jobs)
    Hi! My name is Jason and I'm an innovative electrical engineer looking to apply my expertise. I've established a business dedicated to helping clients achieve success with their electronics, software, and mechanical development. My promise to you is that not only will you get high quality engineering services in a timely manner, but will have the enthusiasm and dedication of an engineer that really enjoys electronics. Most of my industry background lies within the medical industry, but I've also worked with aerospace and audio applications. I love prototyping and making ideas come to life, but also enjoy supporting those ideas from start to finish. I've helped a number of clients so far and I'm looking to further increase my portfolio! When I'm not working I enjoy hiking, woodworking, scuba diving, surfing, and traveling. More info about me can be found on my website: www.metznerprototyping.com
    Featured Skill Bluetooth
    Firmware
    Microcontroller Design
    Electrical Engineering
    PCB Design
    ESP32
    Electronics
    Integrated Circuit
    Digital Electronics
    Arduino
    Embedded System
    Circuit Design
    Schematic
    Printed Circuit Board
    Electronic Design
  • $60 hourly
    • 5.0/5
    • (10 jobs)
    Python, JavaScript, C/C++, Bluetooth LE, wearables, and data engineering for biomedical and biological applications. Formerly at PayPal, ASU, and Patreon. My previous career in cybersecurity means that your projects will meet federal and global data regulations. Research Engineer @ Barrow Neuro Biomedical Data Scientist @ Proto Bioengineering. Former cybersecurity @ Patreon, PayPal, and ASU. Former research aide in biomedical and neural engineering @ ASU. 11 years of experience. Portfolio: aero-man.github.io US federal and EU regulation experience: HIPAA/HITECH/PHI, FERPA, COPPA, GLBA, PCI/DSS, GDPR Development experience: Python, Flask, Node.js, C/C++, AWS Biology/health experience: Created wearables to help people with Parkinson's Disease improve their walking and balance via movement-to-audio biofeedback. Involved Xsens/Movella DOT and APDM Opal sensors. Bioinformatics, GenBank, UCSC Genome Browser, FASTA, FastQC, SAM/BAM, etc. Other tech experience: Bluetooth LE, wearables, digital signals processing (DSP) Security experience: Cloudflare, BetterCloud, Jamf, policy writing, bot management Data science experience: Python Pandas, R Tidyverse, Matplotlib, Seaborn, numpy, sklearn, Plotly Dash, Sumo Logic, Splunk, web scraping Education: Interdisciplinary Studies (Symbolic, Cognitive, and Linguistic Systems), BA (2018) Biology, BS (2022) Neuroscience, BS (2025)
    Featured Skill Bluetooth
    Data Scraping
    Arduino
    NumPy
    SciPy
    pandas
    Flask
    Machine Learning
    Digital Signal Processing
    Adobe Illustrator
    Adobe Photoshop
    C++
    Illustration
    JavaScript
    Python
  • $175 hourly
    • 5.0/5
    • (1 job)
    What I have done in a nutshell: - Designed, built, and maintained multiple mobile and web apps, cloud infrastructure, and architecture roadmap. - Assisted clients in migrating to AWS and Azure Cloud. - Helped clients solve complex technological, security, performance, and scalability problems. - Assembled, mentored, and led talented, passionate, and hardworking teams. Domain expertise: - Medical and clinical trials - Healthcare, pharma, and medical devices, including Software as a Medical Device (SaMD) - Validated software development in regulated areas such as FDA approval, HIPAA, GDPR, etc. - IoT - Financial and insurance - Retail management and operations - Human resource management - Big Data Analytics - Diabetes management My passion is delivering innovative, modern, and high quality software products to my clients. I build long term relationships. Our clients come back and refer others. As a software engineer and architect at heart, learning new technologies and new methods and applying them in the day to day work is a never ending endeavor. As a technical leader I understand a successful project requires constant attention to the client's needs and the needs of the team. Efficient teams understand and share vision with the client and among themselves, and have a strong, positive culture. I make it a personal responsibility to ensure the success of every project. Please refer to my LinkedIn profile for additional information and recommendations. Leo Kudryavtsev
    Featured Skill Bluetooth
    Microservice
    Mobile Development Framework
    Kubernetes
    JavaScript
    Java
    Amazon Web Services
    Cloud Computing
    Docker
    API Development
    Big Data
    Architectural Design
  • $120 hourly
    • 4.9/5
    • (25 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.
    Featured Skill Bluetooth
    FreeRTOS
    Arduino
    Python
    Embedded C
    Firmware Programming
    STM32
    ESP32
    Sensor
    Raspberry Pi
    Microcontroller Programming
    Firmware
    Internet of Things
  • $65 hourly
    • 5.0/5
    • (17 jobs)
    Are you in need of an exceptional Android developer to bring your app vision to life? You've come to the right place! With over 5 years of hands-on experience in Android app development, I specialize in creating cutting-edge, user-friendly, and feature-rich mobile applications that leave a lasting impact. My Skills and Expertise: 📱 Android App Development: From concept to implementation, I have a proven track record of delivering cutting-edge Android apps tailored to meet specific business needs. ☕ Java and Kotlin: Proficient in both Java and Kotlin, I leverage the power of these languages to write clean, maintainable, and efficient code. 🎨 User Interface (UI) Design: I excel at creating intuitive and visually appealing user interfaces that enhance user experience and engagement. 🔌 API Integration: With a deep understanding of RESTful APIs, I seamlessly integrate various services and functionalities into Android applications. 🚀 Firebase and Real-time Databases: I have hands-on experience with Firebase, enabling real-time data synchronization, push notifications, and cloud storage. ♻️ Refactoring: I understand the importance of code maintainability and employ refactoring techniques to enhance code quality and scalability. 📜 Version Control: Git is an essential part of my development process, allowing for seamless collaboration and code management. ⚡ Performance Optimization: I employ various techniques to ensure optimal app performance, smooth user experience, and minimized resource usage. 🛠️ Testing and Debugging: Rigorous testing and debugging are fundamental to my workflow, ensuring that the final product is bug-free and reliable. Why Choose Me? 🌟 Extensive Experience: With over 5 years in the Android development industry, I bring a wealth of expertise and a proven track record of successful projects. 🎯 Client-Centric Approach: Understanding your unique requirements is my priority, and I work closely with clients to ensure their vision becomes a reality. 📞 Communication: Open and clear communication is vital for project success. I am responsive, attentive, and always available to address your concerns. ⏰ On-Time Delivery: I respect deadlines and ensure timely delivery without compromising on quality. 👨‍👩‍👦 Client Satisfaction: Your satisfaction matters most to me. I'm not satisfied until you are thrilled with the final product. Let's Get Started: I'm excited to discuss your Android app project and collaborate with you to create something extraordinary. Feel free to reach out to me through Upwork's messaging system, and I'll respond promptly. Thank you for considering my profile. Let's work together to make your app vision a reality!
    Featured Skill Bluetooth
    JSON
    Database
    Material Design
    Retrofit
    SQLite
    User Authentication
    Java
    In-App Purchases
    Android
    Android App Development
    Kotlin
    Camera
    Location-Based Service
    Push Notifications
  • $60 hourly
    • 4.9/5
    • (23 jobs)
    👋 Hi, I’m a CTO of Iomico IoT development company. We have over 10+ years of experience in firmware & and electronics and over 20 years of experience in software development. We successfully completed a number of IoT projects in the aerospace, manufacturing, logistics, retail, automotive, healthcare, and consumer industries. I encourage you to learn more about Iomico in our intro presentation: 👉 cutt.ly/KXdNUcf 💥We specialize in creating advanced hardware, firmware, and software solutions for start-ups and established companies. Moreover, we have a very experienced and trustworthy development team passionate about technology and innovation. That’s why we deliver you the best project result and keep you away from any risks. 🎯 Electronics engineering: ✔️radio-electronic parts research & selection ✔️Schematics ✔️PCB design ✔️Simulations & Analysis ✔️Review of your current designs 🎯 Firmware technologies we use: ✔️C/C++, Verilog, VHDL, Qt, Python ✔️Baremetal ✔️RTOS (Zephyr, FreeRTOS, AWS RTOS, Chibios, RT-Linux). ✔️Embedded Linux (OpenWRT, uCLinux, Yocto, and stand-alone Linux applications/services/drivers) ✔️Protocols: MQTT, TCP, WebSockets, HTTS(S), FTP, UDP, HTTP, SSH, etc. ✔️Wired and Wireless Networking (BLE / Bluetooth, ZigBee/Z-Wave, UWB, Lora / LoraWAN / 6LoWPAN, RFID, NFC, Mesh Networks, Thread, MLM2M, GSM 3G / 4G /5G, LTE, NB-IOT, Wi-Fi, GPS / GNSS (Galileo, GLONASS, BeiDou), PCIe Gen2/3/4, SATA R.3.x, LVDS, SDI, 10/100/1000 Ethernet, USB up to 3.2, HDMI, MIPI-CSI, MIPI-DSI and more). ✔️Design of MCU/CPU firmware (Nordic Semi (NRF52832, NRF52840, NRF5340, NRF9160, NRF7002), Rockchip (RK3399, RK3328), NXP (i.MX8, i.MX9, Layerscape), STM (STM32H7 and others), Microchip/Atmel, Texas Instruments (Sitara AM57x series), Espressif (ESP32, ESP8266), Renesas, Cypress, Infineon, Nvidia Jetson and any others). ✔️FPGA: Lattice, Xilinx, Intel, Microchip. 🎯 Software technologies we use: ✔️Java, Kotlin, PHP, C#, JavaScript (Angular, React, VueJS, NodeJS). ✔️iOS (Swift, Objective C) and Android (Java, Kotlin) programming, AOSP, cross-platform QT, and React Native. ✔️MySQL, PostgreSQL, OracleDB, MSSQL, MangoDB, RedisDB, and other cloud relational and NoSQL databases. ✔️Messaging queue tools like RabbitMQ, Kafka. ✔️Public and private clouds: AWS, Google Cloud, Digital Ocean, OpenStack. ✔️Cloud clustering / horizontal scaling: Docker, Kubernetes. ✔️OTA: Mendor.io 🎯 Edge AI / Computer Vision: ✔️PyTorch, TensorFlow, MediaPipe, OpenCV, Deepstream ✔️Research and development solutions for “smart” edge devices 🎯OTA: Mender.io, RAUC, Esper and etc. Let me explain how everything works: 1️⃣ First of all, we sign an NDA and arrange a conf call to learn more about your project. 2️⃣ If we agree on each other’s terms, you shall make a prepayment of an amount equal to two weeks of my work on the project. This prepayment shall be used as an advance retainer for my services. 3️⃣ Then, I get down to work alone or with my iomico team, and the payments should be done biweekly. 4️⃣ Please pay attention to my hourly rate and that I work only from the Iomico agency. Furthermore, having released the code, I guarantee the support of the developed product. If you’re ready to implement your ideas (no matter how crazy they are), don't hesitate to contact me here or write to my company Partnership Manager, Michael Bychko - m.bychko@iomico.us.
    Featured Skill Bluetooth
    Hardware Design
    Mobile App Development
    Firmware Programming
    OpenWrt
    Node.js
    Kotlin
    PCB Design
    FreeRTOS
    Wearable Technology
    Internet of Things
    Computer Vision
    C
    Zigbee
    LoRa
    GSM
    C++
    nRF52
    Embedded Linux
  • $90 hourly
    • 5.0/5
    • (35 jobs)
    Professional Summary: Electrical Engineer experienced in developing electronic products for medical, 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.
    Featured Skill Bluetooth
    Analog Electronics
    Altium Designer
    Microcontroller Programming
    Digital Electronics
    Embedded System
    Firmware Programming
    Testing
    PCB Design
    Hardware Design
    ESP32
    Hardware Prototyping
    Electronic Design
    Product Development
    Product Design
  • $90 hourly
    • 5.0/5
    • (12 jobs)
    I have been a professional programmer for over 20 years. I have worked on a wide variety of projects, from web-based ERP systems to HIPAA-compliant emergency messaging apps for iOS and Android to Electronic Logging Device mobile apps for long haul truckers. I have participated in both the front-end development of apps and web sites, as well as the development and administration of SQL databases, including extensive experience with stored procedures. I look forward to hearing from you about your project.
    Featured Skill Bluetooth
    Flutter
    React Native
    iOS Development
    Android App Development
    Mobile App Development
    Swift
    Objective-C
    Dart
    Java
    SQL
  • $65 hourly
    • 5.0/5
    • (8 jobs)
    I professionally develop complex embedded and integrated solutions for remote control, access and monitoring. I and my teams did multiple projects in automotive telematics, retail devices and systems, applied electronics and server software including web-based applications and elements of artificial intelligence like video analytics and speech recognition. Being a professional strategist and IT projects manager, I am able to drive the entire project from an idea to successful product deployment.
    Featured Skill Bluetooth
    Microcontroller
    Information Security
    Linux
    Hardware Prototyping
    ESP8266
    ESP32
    Real-Time Operating System
    nRF52832
    nRF52
    STM32
    C
    Embedded System
    Python
    C++
  • $120 hourly
    • 5.0/5
    • (4 jobs)
    I have worked as an Electrical Engineer, developing more than 7 successful products over 4 years experience in the EMS industry. I have designed medical, consumer, and communications products. I have experience working collaboratively, independently, and in team lead roles. I have the tools required to transform your idea into a functioning circuit, delivering design files, code, prototypes, and a detailed BOM. I am ready to work with regulatory agencies and your manufacturing partners to ensure your transition into the market goes smoothly! I love using my skills to make a positive impact on the world, and am passionate about delivering excellent results as fast as possible. I strive to be an advocate to your brand, understand the user experience we're building, and bring innovative solutions to the table. I love complicated and challenging problems, and hope to work with you soon!
    Featured Skill Bluetooth
    Power Electronics
    Schematic
    Analog Electronics
    Circuit Design
    Embedded System
    Electrical Engineering
    PCB Design
    Mechatronics
    Product Design
    Hardware Prototyping
    Systems Engineering
  • $85 hourly
    • 5.0/5
    • (16 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
    Featured Skill Bluetooth
    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
  • $90 hourly
    • 5.0/5
    • (8 jobs)
    [Note: We (Agency)do not entertain Outside UpWork Communication] We are occupied with our current projects. Individual developer support is not available at this time. Please, Serious Clients, apply through my Agency. 15+ years of experience. Degree - Bachelor Of Engineering, Industrial experience 15+. I am an expert in creating Full Stack Development. Additionally, I have submitted many apps to the App Store, with complex interfaces, extensive web service communication, and multimedia content. I have a strong knowledge of basics, such as common design patterns(MVC), programming languages( Java, TypeScript), and Standard). Also have great experience in a various number of third-party SDKs, Google Firebase, Facebook, PayPal, Stripe, Google Maps, ad networks, etc. Skills & Experiences: ✅ Languages: Java, Kotlin ✅ Tools: Git, Bitbucket, Jira, Confluence Trello, Git Branching & Merging, PR generation & PR Review ✅ Agile methodology - Scrum, Sprint Board, Sprint Planning & Sprint Review ✅ RESTful Applications ✅ Maps & Locations ✅ Push Notification ✅ iTunes connect - TestFlight release and App store submission. ✅ Payment integrations like Stripe etc ✅ Facebook, Twitter, and Google Integration ✅ Codebase: MVC, MVVM ✅ Knowledge of JavaScript, HTML, and CSS, React Native & NodeJS. Expertise in following technologies: ✅ Android (Kotlin) ✅ Java ✅ Node ✅Angular I will provide you with good quality and satisfactory work with your approval. At last, my client's satisfaction is most important to me. Our Agency successfully delivered 50+ IOS projects live and we are offering them a maintenance support. Agency/Team expertise - Additional team skills- IOS (swift/c++), flutter, react native, Game Development [3D] Thanks for visiting my profile. [No Outside UpWork Communication] Hourly Rates are different for Game Development [3D]
    Featured Skill Bluetooth
    AWS Lambda
    SaaS
    iPhone
    Dart
    Android App Development
    React Native
    Kotlin
    Xamarin
    PHP
    Mobile App Development
    Flutter
    Java
    C#
    Swift
  • $175 hourly
    • 5.0/5
    • (4 jobs)
    "Wayne is not only skilled at directing a software product from an architectural standpoint, he also is able to understand it a micro level. As a result, he usually has a very complete grasp of any code he works with for any significant amount of time, whether it's something he's designed or something others have designed." -- Jim K "I experienced Wayne as a highly skilled and motivated software engineer, with a fast and analytical mind. His expertise and creativity always made him the default technical lead of the team. I highly recommend him." -- J. Ovesen With the right software engineer, your project can be done right the first time. When the strongest developers are 10x better than the weakest, working with someone with the lowest hourly could be more expensive than working with a strong engineer with a higher rate! I have been writing software for 30 years, from web, mobile, and desktop apps to firmware written in assembly. I understand software development at its core and can therefore handle your project expertly. In addition, I have been leading software development teams for 2 decades so I can help you manage a team if that is what you are looking for. On the mobile app side, I wrote the first few versions iOS and Android apps for Sound World Solutions, and internal tools in Xamarin and Swift. I also wrote and maintained an inventory management app that used barcode and RFID scanners in Xamarin. On the desktop side, I was the technical lead for the fitting software at GN Resound in the early 2000s. Recently, I have written factory test software and a lot of internal tools in C#/WPF. I have also written desktop software in Java for cross platform compatibility. On the firmware side, I have written the software on a hearing aid on 2 different chipsets and 2 different DSPs. These were written in C and assembly. For web apps, I have worked on e-commerce sites for Sound World Solutions and, too many moons ago, on J2EE and ASP. Currently, I am working on a project in Laravel. As you can see, I can help you with your project! I am efficient and deliver quality code. Please get in touch if you would like me to join your team.
    Featured Skill Bluetooth
    Cloud Architecture
    PCB Design
    Objective-C
    Swift
    C++
    Digital Signal Processing
    Xamarin
    C#
    C
    Java
    Firmware Programming
    Relational Database
  • $106 hourly
    • 5.0/5
    • (2 jobs)
    My experience of over 20 years in education from classroom to district level leadership created a wide experience to support educational technology products in helping integrate these into a district.
    Featured Skill Bluetooth
    Business Presentation
    Computer
    Presentation Design
    Management Skills
    Learning Management System
    PPTX
    Business Management
    Digital Design
    Graphic Design
  • $110 hourly
    • 5.0/5
    • (3 jobs)
    I am a highly motivated, driven, ambitious engineer excited to use my skills and expertise to help your project become successful! As a Master's educated, startup medical device engineering professional, I have years of experience designing hardware, firmware, and software in one of the most rigorous, detail-centered industries while also expected to produce top-quality work efficiently. I take a strong interest in actively working with customers throughout the duration of the project to ensure the project requirements are fulfilled. Hardware Skills: - Analog and Digital Circuit Design, High-Speed Circuit Design, Microcontroller Design - Schematic Capture - PCB Layout and Ordering - BOM Creation - Component Procurement - Assembly Drawings - Debugging - Testing - Well-versed in the following communication protocols: SPI, UART, I2C, RS-232, Ethernet, BLE Firmware Skills: - C/C++ architecting and developing in a variety of applications ranging from medical device capital equipment to consumer electronics - STM32 Microcontrollers - PIC Microcontrollers - Nordic Semiconductors SoC Microcontrollers - FPGA (MAX10, Xilinx) Software Skills: - GUI Design (Visual Basic, XAML Designer, .NET) - Serial Port Interfacing - Pipe Communication -API Development and Integration The rate reflected on my profile reflects my experience and expertise as an electrical engineer. Hours billed are only for hours spent actively progressing the project.
    Featured Skill Bluetooth
    Consumer Electronics
    Arduino
    Digital Electronics
    PCB Design
    FPGA
    C
    C++
    Microcontroller Programming
    Hardware Design
    Firmware
    Firmware Programming
    Python
    Analog Electronics
    Electrical Engineering
  • $78 hourly
    • 5.0/5
    • (0 jobs)
    Pragmatic and results oriented, many projects have won industry innovation awards. Coming from the mobile and embedded arena, primary focus is on embedded and device programming for Android and Windows, coding in Dart/Java/C#, C/C++. Using Flutter/Dart or Java (.NET Compact Framework for managed applications in the past), and C/C++ for native apps where performance is a requirement. Develop both systems software and applications with a focus on real time data collection. Have worked with Android for 16+ years, WinCE for 18+ years. Experience with mobile devices and wireless applications for 30+ years. I work as a contractor throughout the US, typical projects revolve around: hardware, network protocols (UDP/TCP), media (Audio, Video), hard real time. very savvy in networks, hardware, and applied compiler technologies (scanners, parsers), additionally I entered into the publishing realm and wrote articles for Pocket PC and SmartPhone Magazine.
    Featured Skill Bluetooth
    Flutter
    Dart
    Real Time Stream Processing
    Software
    Java
    C#
    TCP/IP
    Audio Services
    SNMP
    Mobile App Development
    Python
    C++
    WiFi
    Embedded System
  • $65 hourly
    • 4.7/5
    • (7 jobs)
    I'm an engineer experienced in designing, testing, and manufacturing IoT Hardware for small and medium-sized businesses. Whether you're in the ideation phase, or ready to scale up production, I'm confident I can help. - Extensive experience with various phases of hardware development, from circuit design and component analysis to DFM optimization and product evaluation. -Specialization in Flex PCB, Multi-Layered and High-Density PCB for IoT applications - Transparent project management from start to finish.
    Featured Skill Bluetooth
    Manufacturing
    Rapid Prototyping
    ESP32
    Onshape
    EasyEDA
    Prototyping
    Design for Manufacturing
    PCB Design
    Multilayer PCB
    Circuit Design
    Eagle
    nRF52
    nRF51
    Altium Designer
  • $80 hourly
    • 5.0/5
    • (5 jobs)
    Are you looking for an exp full-stack app developer? If so, you're at the right spot! I am a driven, autodidactic, and analytical individual with more than a decade of hands-on experience in software development. I possess a demonstrated track record of designing, building, and launching comprehensive native and/or hybrid iOS & Android mobile applications that prioritize user experience and efficient back-end architecture. I am adept at effectively handling multiple projects throughout the entire software development process, thriving in demanding circumstances to meet strict timelines. Furthermore, I possess a profound enthusiasm for mentoring and fostering the growth of fellow team members. My Skills • Native iOS, Swift, Swift UI/Combine, Objective-C, Core Libraries • Native Android, Android Studio, Android SDK, Java • React Native, Node.js, javascript • Design, Sigma • AWS Cloud, Amplify, Firebase, Database, Analytics, Messaging, SQLite database, MS SQL, MySQL • TestFlight, Fabric/Crashlytics • Offline Storage, Multi-Threading, and Performance Tuning • Bluetooth, Wearable devices, iWatch, Fitbit, Oura API • HealthKit Integration, GoogleFit, Fitbit API • Git, SVN and VSS
    Featured Skill Bluetooth
    React Native
    Objective-C
    SwiftUI
    Swift
    Android
    iOS
    AWS Lambda
    Git
    Amazon Web Services
    TypeScript
    Node.js
    JavaScript
    Java
  • $112 hourly
    • 5.0/5
    • (1 job)
    Leader in Embedded Electrical Engineering Electrical Design Leader | Quality | PCB Design & Layout | EMC | Software & Firmware Development Highly experienced leader in electrical engineering, with experience from cradle to grave in the design process delivering worldclass designs for internal and external customers. Broad knowledge across electrical engineering discipline, used to achieve success for legacy companies as well as startups, with extensive credentials in: * Electrical Design: Led electrical engineering efforts including design development, electromagnetic compatibility, DFMEA, BOM generation and maintenance, root cause analysis, development of rationales to support engineering decisions, review of designs as part of change control processes. Expertise in microcontroller-based embedded designs for low power, high speed, and small motor control.
    Featured Skill Bluetooth
    Hardware Troubleshooting
    Hardware Testing
    Hardware Prototyping
    Hardware Design
    OpenCV
    Python
    C
    PCB Design
    C#
    Electrical Engineering
    Electronic Workbench
    Altium Designer
  • $95 hourly
    • 5.0/5
    • (5 jobs)
    Developed and published over 200 mobile apps, and various SDKs. Lots of experience creating apps with wireless communication (Bluetooth, WiFi, NFC) - 15+ years of native iOS app development experience with Objective-C, Swift, SwiftUI. - 9+ years of native Android app/SDK development experience. - Experience with: - Flutter - Kotlin Multiplatform - React Native Developing AR apps for Apple Vision Pro - Python - Developed scripts and automation tools for Blender - Blender - Created assets for VisionOS apps - Apple RealityKit/AVKit - Experience with: - Unity - Unreal Engine Experienced UX/UI Designer
    Featured Skill Bluetooth
    Blender
    NFC
    Kotlin
    Flutter
    Python
    Android App
    iOS Development
    Software Development
  • $100 hourly
    • 4.5/5
    • (9 jobs)
    Town Line Technologies provides design / layout / consulting services for image sensing and video markets in the consumer, machine vision, medical, military, x-ray, and scientific space. Our passions here are PCB design and CMOS image sensors. 41 years in the image sensor business, with a long history going all the way back to vidicon & plumicon tube cameras for medical x-ray, to CID sensors to 23 years of designing and supplying CMOS linear and 2D area array sensor products, our team can provide you with your image sensor solution! 46 years experienced designing and laying out PCB's! Other areas of expertise is professional Audio & Music equipment. With a wealth of design experience in the mixed signal sensor space, we leverage that experience by offering IC & PCB design and layout contract services. We can tackle a one week layout job or work with well seasoned partners to offer as much or as little as you need to successfully complete your project. We can also offer mechanical drafting services, graphic design as well as working up documentation and marketing materials for your new product or prototype. Project highlights: • Jan 2021-May 2021 Infared Image sensor Layout, Tanner EDA tools, Calibre verification. details under NDA • April 2021 Test PCB for Gyro Navigation for satellite rocket platforms, Orcad / Pads Tool Flow • March 2021 Medical instrument Sensory diagnostic PCB. Pads tool flow • 2020 o Infrared Image sensor Layouts, Tanner EDA tools, Calibre verification. details under NDA o 2020 Medical instrument Sensory diagnostic PCB. Pads tool flow • 2016 thru 2019 o Infrared Image sensors Layout, Tanner EDA tools, Calibre verification. details under NDA o Smart Flame Monitor for commercial boilers and power plants. Orcad / Pads Tool Flow o Electron Microscope direct imaging Sensor platform Orcad / Pads Tool Flow o 80FPS Tomography Medical Instrument for Eye Surface Mapping. Orcad / Pads Tool Flow o Hi Res Full frame Range Finder Digital Camera. Orcad / Pads Tool Flow • Dec. 2014-May 2015 Infrared Image sensor Layout, Tanner EDA tools, Calibre verification. details under NDA • Dec. 2012- March 2016 Panavision Federal Systems AMPPM Periscope Photonics Platform for Virginia Class Submarines. Orcad / Pads Tool Flow
    Featured Skill Bluetooth
    Analog Circuit
    Video Capture Device
    Analog Audio
    Medical Device
    Mechanical Engineering
    Analog Electronics
    Image Scanning
    Electronic Design
    Integrated Circuit
    IT Consultation
    Hardware Design
    PCB Design
  • $108 hourly
    • 4.5/5
    • (156 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 :)
    Featured Skill Bluetooth
    Unity
    Electronic Design
    Article Writing
    OpenCV
    C#
    Power Electronics
    SQL
    Machine Learning
    Technical Writing
    PCB Design
    RF Design
    Python
    C++
    nRF52
  • $150 hourly
    • 5.0/5
    • (44 jobs)
    I have over 22 years of experience working and consulting for tech companies in Silicon Valley. Every technical challenge that I had overcome assured me that with the right frame of mind, I could accomplish anything. Engineering is also my hobby, and I have been doing it since before high school. I was born with a soldering iron in one hand and writing code with the other. I designed the hardware for over 100 projects, most of them being sold today. Some notable ones are Snapchat Spectacles (designed most of the electronics and PCB layout), Thornwave Labs' Bluetooth DC Power Meter (PowerMon) and all the other projects on the webpage, various RF modules (RN-171, RN4020, RN52), and development boards designed while working at Microchip. I also created production testers, lots of C/C++ programming, and firmware design. What I can do for you? --------------------------- High Level: project management, research. I am very experienced with hardware design and firmware, which allows me to integrate them more efficiently. Hardware: circuit design, component selection, electrical schematic, PCB payout. I am using Altium Designer. I will provide you with everything you need to go to manufacturing: Gerber files, NC drill, pick and place, assembly diagrams, 3D prints, 3D STEP model, and electrical schematics as well as offer support after the project is completed. I have experience with analog and digital design, RF, high-speed design, microcontrollers, highly complex boards, LCDs. I can run Spice simulations as well. I worked with various technologies and protocols: SPI, I2C, UART, USB, CAN, RS-485, Ethernet, Bluetooth, WiFi, and so on. Prototyping: I will manufacture the prototypes at a much lower cost than average. Over the years, I have developed working relationships with manufacturers in China, hence the cost-saving. I also have a lot of equipment: multimeters, oscilloscope, logic analyzer, vector network analyzer, USB protocol analyzer, power supplies, digital electronic load, soldering equipment, computers, and so on... Certifications: I can assist and oversee the certification process for FCC, IC, and others. Firmware development: I have 24+ years of experience coding in C/C++ and 20 years of firmware development. I can architect and develop your firmware from the ground up. I am exceptionally versed in the ARM Cortex line of microcontrollers: STM32 and Nordic. I will provide you with production-quality firmware. I know the ST and the Nordic microcontrollers like the back of my hand. I can get firmware done very quickly and efficiently for these chips. Software development: Basic tools running in Linux/Windows/Mac, basic GUIs. I can develop all the software tools you need for debugging, testing, and manufacturing. Manufacturing: If your project reaches this phase, I can offer contract manufacturing services. I will be delivering your finished product, ready to sell. The rate I displayed is an average number. It can vary up or down based on the complexity of the project. My rate reflects the experience and knowledge I have. I am good at what I do. Also, keep in mind that I will not bill you for hours like lawyers do for the time they spend in the shower thinking about the project. I will bill you only for the hours I spend advancing the project in a meaningful way.
    Featured Skill Bluetooth
    STM32
    C
    RF Microwave Design
    Embedded Operating System
    Industrial Automation
    Linux
    WiFi
    Firmware Programming
    Analog Electronics
    Circuit Design
    Power Electronics
    Digital Electronics
    C++
    RF Design
    ARM Cortex-M
    PCB Design
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