🌍 GIS Developer | 15+ Years Building Geospatial Systems that Reduce Costs and Scale Operations. Most businesses collect location data but don't fully leverage it. I build geospatial solutions that turn location data into smarter decisions, streamlined operations, and measurable business results:
- 🗺️ Interactive web maps and GIS dashboards
- 🧭 Route optimization and fleet management systems
- 🛰️ Real-time asset tracking and monitoring platforms
- 📊 Spatial analysis and decision-support solutions
💡 I don’t just write code. I focus on solving business problems by leveraging geospatial data to drive smarter decisions, reduce costs, and scale operations.
🚀 Track record:
✔ 15+ years in GIS & full-stack development
✔ 13,700+ hours worked
✔ 120+ milestones completed
✔ 90+ successful projects
✔ 55+ satisfied clients
🏆 Key achievements:
✔ Developed a Non-Emergency Medical Transportation (NEMT) platform with GIS features that helped the client win contracts and grow revenue by more than 30 times
✔ Built a GIS tool that reduced the duration of the land property development potential assessment by more than 1000 times (from days to seconds).
✔ Developed a service for automatic scheduling and routing shared rides, which increased the fleet capacity by more than 20%.
These are examples of how GIS can create a measurable business impact.
🌐 Industries I serve:
- 🚚 Logistics
- 🚑 Healthcare & NEMT (Non-Emergency Medical Transportation)
- 🏡 Real Estate & PropTech
- 🌳 Environmental Monitoring & Sustainability
- and beyond.
🛠️ My services
- GIS consulting and discovery
- Proof of concept for GIS solutions
- Web GIS development
- Mobile GIS development
- Geospatial analysis
- Object detection and recognition on satellite imagery
🤝 How I work
Every project starts with understanding your business processes and goals. This allows me to design a solution that solves the actual problem.
My development process is iterative and usually consists of the following stages:
- Discovery: Analysis and specification of your business needs, project goals, data, and requirements; UI/UX design; high-level architecture design; cost estimation; and development planning
- Implementation
- Testing
- Delivery
After each iteration (typically 1–2 weeks), I provide a demo of completed features and incorporate your feedback. This approach reduces risks, improves transparency, and ensures we stay aligned with your goals.
To improve quality, accelerate development, and reduce costs, I often involve other specialists from our team, such as a Business Analyst, a QA Engineer, a DevOps Engineer, and a Data Analyst. I also use AI tools to accelerate writing code.
🌐 Industry experience
🚚 Logistics & Healthcare Transportation
✔ Transportation request booking and management platforms
✔ Fleet management systems
✔ Route optimization
✔ Dispatch automation: Vehicle Routing Problems (VRP), Dial-a-Ride Problem (DARP)
✔ Cost optimization for Google Maps API
✔ GPS and ETA tracking
✔ Geofencing
✔ API integration with dispatch software
✔ Billing (EDI 837, 835) and payment processing
🏡 Real Estate & PropTech
✔ Integration of geospatial data from multiple sources
✔ Multi-layer map visualization (zones, cadastral data, infrastructure, etc.)
✔ Site selection and suitability analysis tools
✔ Automated geospatial reporting
🌳 Environmental Monitoring & Sustainability
✔ Map-based inventory management systems
✔ Satellite imagery processing and analysis
✔ Object recognition on aerial and satellite imagery using AI/ML
✔ Spatial analytics and decision-support tools
⚙️ Core skills
✔ GIS & Mapping: Mapbox, Leaflet, OpenLayers, Google Maps API, ArcGIS, OSM, OSRM, PostGIS
✔ Frontend: JavaScript, Vue.js, React
✔ Backend: Python, Node.js, PHP (Laravel, CodeIgniter), C#
✔ Databases: PostgreSQL, MySQL
✔ Other: AWS, Docker, API Integration, AI/ML, OpenCV, Data Scraping
Other experience and skills:
✔ Development of ArcGIS (ArcMap, ArcGIS Server) extensions and tools
✔ Building GIS components that can be used in both desktop and web environments (ArcMap, ArcGIS Engine Runtime, ArcGIS Server based web applications)
✔ Implementation of fast boolean operations on large polygon sets (10+ millions)
✔ GIS Specialist
✔ Web GIS Developer
✔ Interactive Map Development
✔ GIS mapping
✔ Web mapping application developer
✔ Mapbox developer
✔ Mobile application developer
✔ Database architecture design
✔ Data analysis
✔ SaaS developer
✔ Logistics supply chain software developer
✔ Supply chain management system
✔ Transportation Management System
✔ TMS software developer
✔ Trucking logistics software developer
✔ Freight management system
✔ NEMT software developer
✔ Booking Management System
✔ Dispatch software developer
📅 Available: 09:00 - 19:00 (GMT+2)
👉 Let’s discuss your goals, challenges, or ideas and explore how geospatial technology can help your business grow.
Mapbox
Web Development
Full-Stack Development
GIS
Google Maps API
ArcGIS
Routing
SaaS Development
Geospatial Data
Dispatch & Tracking Solutions LETS
Transportation & Warehousing
Data Analysis
Python
PostGIS
Machine Learning
Web Application
Leaflet
QGIS
Digital Mapping
Spatial Analysis
Oleksandr K.
Kharkiv, Ukraine
$55/hr
5.0
310 jobs
✔︎ Custom geospatial and GIS (Geographic Information System) development
✔︎ GIS data capture and conversion
✔︎ Geoprocessing and geocoding
✔︎ GIS database design
✔︎ 3D GIS mapping and modeling
✔︎ UAV (drone) data processing
✔︎ Remote sensing data processing (Planet, Sentinel-2, Landsat 8)
✔︎ Creating offline maps for iOS and Android applications
✔︎ GIS consulting and training
Based in Ukraine (GMT +3) 🇺🇦
Tools:
⭐ QGIS, ESRI ArcGIS (ArcGIS Pro), MapInfo, GRASS, gvSIG, Global Mapper, CloudCompare, Google Earth Pro
⭐ PostgreSQL/PostGIS, MySQL, SQLite/SpatiaLite
⭐ GeoServer, Mapnik
⭐ Leaflet, Mapbox GL, MapLibre, OpenLayers, Google Maps API, CesiumJS, Potree, Turf.js, MapillaryJS, GeoCV
⭐ Tippecanoe, Tegola, t-rex, Tileserver GL
⭐ GDAL/OGR, rasterio, PDAL, LASTools, sen2cor
⭐ JOSM, iD, imposm3, osm2pgsql, Nominatim, Photon, Pelias
⭐ Agisoft Metashape (Agisoft Photoscan), Agisoft Metashape Python API, Agisoft Metashape Network Processing
⭐ Pix4D, DroneDeploy, OpenDroneMap, WebODM
⭐ OpenSlide, OpenSeadragon
⭐ xeokit-sdk, xeokit-bim-viewer
⭐ Hyper-V, Docker
⭐ npm, Webpack
⭐ Google Cloud Platform, IBM Cloud, DigitalOcean, Bluehost
⭐ AWS EC2, AWS S3
⭐ Windows, Linux (Ubuntu)
⭐ Open Source Routing Machine (OSRM)
Programming languages:
⭐ HTML, CSS, JavaScript
⭐ jQuery, Bootstrap
⭐ Vue.js, Vuetify, Vuex, Vue Router
⭐ Python, Django, Flask, FastAPI
⭐ PHP, Laravel Mix
Data Formats:
📌 ESRI Shapefile (.shp)
📌 ESRI File/Personal Geodatabase (.mdb, .fgdb)
📌 GeoJSON
📌 GeoPackage
📌 SQLite/SpatiaLite
📌 GeoTIFF (.tif, .tiff)
📌 ECW
📌 KML, KMZ
📌 GPS eXchange Format (GPX)
📌 mbtiles
📌 vector tiles (.mvt, .pbf)
📌 OpenStreetMap (.osm, .pbf)
📌 DWG/DXF
📌 LAS/LAZ/PLY/XYZ (Point Cloud, LiDAR)
📌 OBJ (3D Mesh)
📌 NIR, NDVI, NDWI, SWIR, Moisture index
📌 MIRAX (.mrxs), Aperio (.svs, .tif)
📌 Orthomosaic, DSM, DTM, Point Cloud, Contours
Web mapping services & API:
✔︎ OpenStreetMap
✔︎ Mapbox API
✔︎ HERE Maps API for JavaScript
✔︎ Google Maps API
✔︎ 2GIS Maps API
✔︎ Yandex Maps API
Data providers:
✔︎ OpenStreetMap
✔︎ Landsat 8, Sentinel-2, Planet
✔︎ USGS.gov
✔︎ OpenAddresses
✔︎ OpenMapTiles, Planetiler
✔︎ Property parcels data (cadastre)
✔︎ National Hydrography Dataset (NHD)
✔︎ National Agriculture Imagery Program (NAIP)
Industries:
✔︎ Archeology
✔︎ Agriculture
✔︎ Construction
✔︎ Forestry
✔︎ Government
✔︎ Maritime
✔︎ Navigation
✔︎ News and Media
✔︎ Oil and Gas
✔︎ Real Estate
✔︎ Telecom
✔︎ Travel, Tourism
Drones&cameras:
✔︎ DJI Phantom/Mavic/Inspire/Matrice
✔︎ senseFly eBee, Parrot Sequoia
✔︎ XAG
✔︎ MicaSense RedEdge
Mapbox
Map Integration
Python
QGIS
ArcGIS
Data Mining
Photogrammetry
PostGIS
GIS Software
JavaScript
Vuetify
Geospatial Data
Vue.js
OpenStreetMap
GIS
Sergey P.
Lviv, Ukraine
$40/hr
5.0
415 jobs
I build fast, interactive web maps and data‑visualization dashboards for real estate, logistics, utilities, and city‑data products.
400+ completed projects on Upwork.
What I deliver:
Interactive maps: Mapbox GL / MapLibre / Leaflet / Google Maps / OpenStreetMap—3D, clustering, custom styling, high performance at scale.
Data visualization: D3.js, deck.gl, three.js—charts, heatmaps, spatial dashboards that tell a clear story.
Geo features: geocoding, routing, isochrones, drawing tools, spatial analysis (Turf.js, OpenRouteService).
Full‑stack support when needed: React, JS, PHP/MySQL, API integrations, data scraping/ETL.
My process:
You share your use case, sample data, and must‑have interactions.
I propose scope, architecture, milestones, and timeline (clear definition of done).
You get frequent demos and measurable progress
Send me a link to your current map (or a reference), sample data/source, and key interactions—I'll reply with a concrete plan and estimate.
Mapbox
Map Integration
ArcGIS
JavaScript
QGIS
Google Maps API
React
Google Map Maker
Google Maps
GIS
Leaflet
OpenStreetMap
OpenLayers
Next.js
Digital Mapping
Vitalii K.
Kharkiv, Ukraine
$42/hr
4.8
84 jobs
I build data- and API-heavy platforms on Laravel + React — and own them end-to-end. My focus is the parts most developers bolt on as an afterthought: interactive maps (Mapbox / Leaflet / Google Maps) and Meta / Google marketing-API integrations. 15 years, 50+ projects delivered, 100% Job Success.
I work best on systems built to last and grow — but I'm just as happy taking a single, well-scoped task to start.
⚙️ FULL-STACK WEB PRODUCTS
Laravel APIs paired with React frontends, built to last — not just to ship. From SaaS platforms and admin dashboards to a multi-brand CMS engine powering 15+ automotive dealer websites (Volvo, Mercedes-Benz, Alfa Romeo, Jaguar, Land Rover).
🗺 Interactive Maps — Mapbox / Leaflet / Google Maps API
◾ Custom maps: styled tiles, markers, plotting live data
◾ Map tools: drawing & editing shapes, measurements and calculations on the map
◾ Example: a solar-PV design tool with live roof mapping
🛠️ Meta Graph / Marketing API
◾ Lead capture: real-time leads delivered straight to CRM, email, or messenger
◾ Ad tooling: custom reporting logic, automated insights, campaign automation
◾ Publishing & analytics: posting to Instagram/Facebook (feed, stories), post & profile insights
🗃️ Google API
◾ Custom Looker Studio connectors
◾ Google Merchant Center feeds (recent project: 30k+ SKUs synced)
◾ Google Ads automation tools
💳 Payments
◾ Standard and custom Stripe / PayPal / Afterpay integrations
However you want to start — a full build, a senior pair of hands on an existing codebase, or one focused task (a map feature, a Meta/Google API integration, a tracking or feed setup) — I'm easy to work with and quick to get going.
Send a short note about your project, even a rough idea, and I'll tell you honestly how I'd approach it. 🤝
Thank you,
Vitalii Komliev
Mapbox
Laravel
React
PHP
JavaScript
API Integration
Web Development
Leaflet
Google Maps API
Facebook Graph API
Node.js
Next.js
GIS
Marketing API Integration
API Development
Instagram API
Facebook Advertising
AI Development
AI Agent Development
Marketing Automation
Olha B.
Chernivtsi, Ukraine
$30/hr
5.0
215 jobs
Hello there!
I'm a talented Cartographer Graphic Designer and GIS Specialist, skilled in creating captivating maps. I specialize in various graphic styles, including travel maps, hand-drawn maps, GIS maps, site plans, real estate maps, infographic maps, and fantasy/illustrative maps.
With expertise in Adobe Illustrator, Photoshop, and Procreate, I can enhance the visual appeal of your maps and provide stunning vector illustrations (see more illustrations on my Inst. mapsta_art).
My knowledge of ArcGIS Desktop allows me to handle tasks such as cartography, vectorization, data visualization, and building digital databases (*gdb). I'm also adept at working with file formats like SHP, KML, SVG, GEOTiff, and many others, ensuring seamless integration with different platforms and software.
I am committed to delivering high-quality maps that meet your specific requirements. If you're seeking an enthusiastic and skilled Cartographer Graphic Designer and GIS Specialist, I'm here to bring your vision to life.
ArcGIS
Digital Mapping
Data Visualization
QGIS
Cartography
Map Illustration
Graphic Design
GIS
Adobe Illustrator
Adobe Photoshop
Geospatial Data
Illustration
Vector Graphic
Digital Illustration
Sergiy P.
Kharkiv, Ukraine
$60/hr
5.0
105 jobs
My focus is Location Intelligence solutions in Real Estate, Construction and Transport industries. My passion lies in developing custom algorithms based on large GIS datasets, such as OpenStreetMap data or government land and cadastral registers. I extensively use PostgreSQL/PostGIS databases and server-side software focused on delivering high-performance tiled map sources in my work. I possess expert knowledge of Mapbox GL, MapLibre GL, and Leaflet map scripts and their application for complex GIS data visualization.
Currently I am in search of interesting projects related to:
- Land registers, cadastres, real estate evaluation and appraisal using GIS datasets
- Location Intelligence applications in Construction and Real Estate industries
- Processing and leveraging OpenStreetMap data in various applications
- Physical address related GIS solutions
- Routing and traffic solutions
- Climate and weather data processing, tightly integrated with maps
I possess extensive experience in:
- Managing large real estate and geospatial databases
- Government GIS open data
- Utilizing OpenStreetMap data in various applications, ranging from traffic routing to real estate appraisal
- Visualizing data on web maps, including big data
- Processing weather and climate maps with NetCDF and GRIB data
- Analyzing satellite imagery data for NDVI/NDWI, detection of roofs, pools, building footprints, etc.
- Developing custom GIS algorithms
Technologies:
Backend:
- Python, GeoPandas, Numpy, Flask, FastAPI.
GIS-specific libraries:
- Gdal, ECMWF, OSRM, Valhalla, Nominatim
Frontend:
- Mapbox GL, Maplibre, Leaflet, Google Maps, Turf, Javascript
Databases:
- Postgres/Postgis, MySQL, MongoDB
Deployment:
- AWS, Ubuntu, Debian
Desktop:
- QGIS, ArcGIS
Note:
I don't like works with HTML/CSS UI other than map components. It's acceptable only as a very small part of the whole project
Mapbox
Python
MongoDB
Google Maps
GIS
jQuery
OpenStreetMap
MySQL
Leaflet
JavaScript
Google Earth
Google Maps API
API Integration
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