I'm a Senior Fullstack GIS Engineer from Indonesia 🇮🇩 with 7+ years of experience building production-grade platforms for companies in Norway 🇳🇴, Hong Kong 🇭🇰, Singapore 🇸🇬, and Indonesia. My core specialty is GIS & geospatial systems — interactive maps, real-time fleet tracking, and spatial data pipelines — delivered full-stack from React/Next.js frontends to NestJS backends and AWS cloud.

const teguh = {
  role: "Senior Fullstack GIS Engineer",
  experience: "7+ years",
  clients: ["Norway", "Hong Kong", "Singapore", "Indonesia"],
  // 🗺️ Core specialization
  gisExpertise: [
    "Leaflet.js",
    "Google Maps",
    "Here Maps",
    "OpenStreetMap",
    "PostGIS",
    "Real-Time Tracking",
  ],
  // 🏗️ Full-stack delivery
  stack: [
    "React",
    "Next.js",
    "TypeScript",
    "NestJS",
    "PostgreSQL",
    "Redis",
    "AWS",
    "Docker",
  ],
  currentWork:
    "Vision Technology Grid AS · GIS Fleet Platform (10,000+ assets, European logistics)",
  recentlyExploring: [
    "RAG Pipelines",
    "NL-to-SQL",
    "OpenAI",
    "Groq",
    "Local LLMs",
  ],
  askMeAbout: [
    "GIS Systems",
    "Fleet Tracking",
    "MQTT",
    "WebSocket",
    "PostGIS",
    "Leaflet",
  ],
};

Remote · Norway | Mar 2024 – Present

• Led full-stack development of a GIS-based fleet management platform serving European logistics clients — real-time tracking for 10,000+ assets
• Built complex geospatial map interfaces with React, Next.js, Leaflet.js, Google Maps & Here Maps; optimized large dataset rendering for 60fps performance
• Designed and implemented backend APIs with NestJS + PostgreSQL/PostGIS for spatial queries, vehicle telemetry storage, and stop detection
• Built MQTT + WebSocket event pipeline for sub-second vehicle position updates across the entire fleet
• Managed Docker + AWS deployment and infrastructure for high-availability GIS services

Remote · Hong Kong | Aug 2021 – Mar 2024

• Delivered 5+ end-to-end products from MVP to enterprise scale for international clients
• Built production frontends with React, Next.js, Vue.js, Quasar; translated Figma designs to pixel-perfect UIs
• Designed backend APIs with NestJS, Express.js, MySQL; containerized with Docker + CI/CD
• Managed AWS cloud infrastructure (EC2, RDS Aurora, S3, IAM)

Remote · Singapore | Feb 2019 – Jul 2021

• Developed core features for a B2C EdTech platform with thousands of active learners using Vue.js + ES6+
• Built reusable component libraries that reduced UI development time across the team
• Integrated backend APIs for real-time dashboards and interactive learning modules

Onsite · Indonesia | Aug 2018 – Feb 2019

• Built full-stack GPS tracking & fleet monitoring systems — geospatial map dashboards using Vue.js, Quasar, Leaflet.js, OpenStreetMap connected to backend APIs for real-time asset data
• Developed REST APIs to serve live vehicle positions and historical route data to the map interface
• This is where my GIS engineering roots began — the foundation for all subsequent fleet tracking and geospatial work

Production-grade GIS Fleet Tracking & Autonomous Vehicle Sensor Platform — open source

Next.js NestJS TypeScript Leaflet.js PostgreSQL PostGIS Redis MQTT WebSocket Docker

GIS & Tracking Features:

• 🗺️ Interactive Leaflet.js map with real-time smooth marker animations
• ⚡ Sub-second latency GPS position updates via MQTT → WebSocket pipeline
• 🛑 Automatic stop detection — vehicle stopped when speed < 5 km/h for 2+ min
• 📍 Route history playback — replay vehicle trajectories with timeline controls
• 📊 Analytics: speed charts, stop events, fleet statistics dashboard

AV Sensor Visualization:

• 📹 6-camera sensor grid view (nuScenes dataset)
• 🎯 LiDAR point cloud + 3D bounding box annotations
• 🔄 Frame-by-frame AV sensor scene replay

Architecture: MQTT Broker → NestJS (Prisma + Redis) → WebSocket → Next.js (Leaflet map)

• 💼 Open for freelance, remote roles, and collaboration (Norway, HK, SG, Global)
• 📧 Email: teguhbadrusalam6@gmail.com
• 🔗 LinkedIn: linkedin.com/in/teguh010
• 🌐 Portfolio: teguhbadrusalam.netlify.app