HN-2026 · CONNECTED SYSTEMS LAB

Huan
Nguyen

IoT engineer · Java · Angular · PostgreSQL · AWS IoT Core

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IoT · Robotics · Full-stack

I connect machines to the people who run them.

I'm Ngoc Huan Nguyen. I build the software that takes data from devices and robots to the people who use it: Java services on AWS IoT Core, data in PostgreSQL, and Angular dashboards.

Try the live device See projects
5+
years in IoT
40+
devices in production
99.9%
fleet uptime
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§1Collect · About me

Raw input: who I am.

Every system starts by collecting data. Here's the first reading.

I design and build end-to-end IoT systems. Devices and robots publish through AWS IoT Core, Java / Spring Boot services process and store the data in PostgreSQL, and Angular dashboards put it in front of operators.

I care about what makes connected products trustworthy in the field: secure provisioning, device state that stays in sync, updates that can't brick a device, and monitoring you can debug at 3am.

"thingName": "huan-nguyen",
"role": "IoT Engineer",
"location": "Vietnam · UTC+7",
"stack": ["Java", "Angular", "JavaScript",
          "PostgreSQL", "AWS IoT Core"],
"status": "open_to_work",
"uptime": "00:00:00"

§2Manage · Skills

Pin configuration.

Each pin is a skill I use in production. Scroll to power up each side of the chip.

  1. North · BackendJava services that process, validate and route device data.
  2. East · FrontendAngular dashboards and control panels operators rely on.
  3. South · DataPostgreSQL schemas built for time-series telemetry and device state.
  4. West · Cloud IoTAWS IoT Core: secure connectivity, rules and device shadows.

Hover or tap a pin for details

§3Publish · Live device

A device on AWS IoT Core.

A simulated thermostat running the same patterns I ship: MQTT telemetry, a Device Shadow for state, and offline buffering. It also drives the pipeline counters at the top of the page. Try the controls.

Device Shadow · devkit-01v1

        

      

      

        

          
Temperature-- °C

          
Heater--

          
Link--

          
Buffered0

        

        

          
Temperature, last 60 sreading setpoint

          
          
        

        

          
MQTT · AWS IoT Core · ap-southeast-10 msgs

          
    
        
    
      
    
    
    
  
    

  
  
    
    
    
      
    §4Visualize · Projects
    
      
    Machines in the field, software in production.
    
    
    
    
    
    
      
    
        
    P-01Robotics fleet
    
        
    Warehouse robot fleet monitor
    
        
    Live status, battery and position for 30 autonomous mobile robots. Robots report through AWS IoT Core, a Spring Boot service tracks state with Device Shadows, and an Angular map shows the fleet in real time.
    
        
        
    • < 1 sposition updates
    • −40%time to find a stalled robot
    
        
    JavaSpring BootAWS IoT CoreAngularPostgreSQL
    
      
    
      
    
        
    P-02Platform
    
        
    Device provisioning service
    
        
    Zero-touch onboarding with AWS IoT Fleet Provisioning. A Java service validates serial numbers, issues certificates and registers every device in PostgreSQL.
    
        
        
    • 5 min → 20 sper device setup
    • 0shared credentials
    
        
    JavaAWS IoT CoreLambdaPostgreSQL
    
      
    
      
    
        
    P-03Industrial IoT
    
        
    Factory energy dashboard
    
        
    Angular dashboard over a PostgreSQL time-series schema with per-machine energy, drill-down, alerts and shift reports for plant managers.
    
        
        
    • −18%peak-hour energy
    • 60machines tracked
    
        
    AngularRxJSJavaPostgreSQL
    
      
    
      
    
        
    P-04Robotics
    
        
    Robot arm remote control
    
        
    Browser control panel for a 4-axis robot arm. Commands travel over MQTT through AWS IoT Core with acknowledgements, and the safety stop works even if the web app disconnects.
    
        
        
    • 120 mscommand round trip
    • 100%e-stop reliability in tests
    
        
    AngularJavaScriptAWS IoT CoreESP32
    
      
    
    
    
    
    Projects, figures and charts are sample content. Replace with your own.
    
  
    

  
  
    
    
    
      
    §5Specifications
    
      
    Operating conditions.
    
    
    
    
    
      
    
        
    
          
    ParameterConditionsMinTypMaxUnit
    
          
            
    ExperienceIoT & full-stack5years
    
            
    JavaSpring Boot services in production5years
    
            
    Fleet uptimeRolling 90 days99.999.95%
    
            
    Telemetry latencyDevice → dashboard, p95180400ms
    
            
    Response timeEmail, working days424hours
    
            
    TimezoneRemote-friendlyUTC+0UTC+7UTC+10—
    
              
        
    
      
    
      
    
        
    
          
    RevDateRevision history
    
          
            
    2.02024 – nowSenior IoT Engineer. Device-to-cloud architecture on AWS IoT Core, Java services and Angular dashboards.
    
            
    1.22022 – 2024IoT Engineer. Telemetry pipelines and PostgreSQL data models for industrial clients.
    
            
    1.02020 – 2022Software Developer. Java and Angular applications for connected devices.
    
            
    0.12016 – 2020B.Eng. Initial release. First blinking LED.
    
              
        
    
      
    
    
    
    
    Values are sample figures. Replace with your own.
    
  
    

  
  
    
    
    
      
    §6Ordering information
    
      
    Let's build something that moves.
    
      
    Open to full-time roles and contract work in IoT, robotics software and Java / Angular systems.
    
    
    
    
    
      
    
        Email
        ngochuannguyen.it@gmail.com