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$
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I will build a custom gis web maps using google maps or osm
Sehan D
5.0
5.0
What people loved about this freelancer
ejrairnet
United States
Excellent experience working with Sehan. He took the time to understand a fairly complex technical project, communicated clearly throughout the milestone, and...
ejrairnet
United States
Sehan did an excellent job on this project. He was extremely responsive, thoughtful, and technically capable throughout the entire process. What impressed me...
ejrairnet
United States
Excellent experience working with Sehan! He’s knowledgeable, professional, responsive, and genuinely invested in the success of the project. His communication...
About this gig
Need more than a basic Google Map on your website? I build highly custom geospatial web applications designed around your business and data.
Whether it's a logistics dashboard, real estate platform, territory management system or an internal GIS tool, I create secure, scalable solutions that are built to last. By saying custom, I really mean it. You can do micro customizations as you want.
What I can build:
- Full stack geospatial web applications & dashboards
- User authentication & role-based access
- PostgreSQL/PostGIS spatial databases
- Routing with OSRM, Google Maps & Mapbox
- Process your existing Excel sheets to databases
- Custom map layers, heatmaps, clustering & drawing tools
- Secure file uploads (CSV, GeoJSON, KML)
- React/Next.js frontend with FastAPI, Node.js or Go backend
Tech Stack: React, Next.js, Tailwind CSS, FastAPI, Node.js, Go, PostgreSQL/PostGIS, MongoDB, Redis, Google Maps API, OpenStreetMap, Mapbox, Leaflet.
Every project is built with clean architecture, maintainable code and long term scalability in mind.
Send me a message before ordering so we can discuss your requirements and choose the best approach for your project.
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Get to know Sehan D
Sehan D
Software Engineer
- FromSri Lanka
- Member sinceMay 2026
- Avg. response time1 hour
- Last delivery1 week
Languages
Sinhala, English, German
Hello there! I’m a Software Engineer with 4+ years of experience building clean, scalable web apps and SaaS products. I have worked with many clients and completed 50+ projects using React, Next.js, Node.js, Go, Python, Google Maps API, authentication systems and API integrations. I focus on clean code, clear communication, fast delivery and reliable results. Let’s discuss your project and build it the right way.
My Portfolio
FAQ
Why is it mandatory to message you before placing an order?
Geospatial software architecture is highly complex and unique to every business. Discussing your data sources, business logic, and workflow beforehand ensures we select the absolute best technical approach (e.g., choosing between Mapbox, OSM, or Google Maps).
What is the difference between a standard map plugin and what you build?
Standard map plugins are often restrictive, slow down your website, and require ongoing monthly SaaS subscriptions. I engineer bespoke, full-stack geospatial web applications from scratch, giving you advanced spatial logic and 100% ownership of your data and code with no recurring monthly fees.
Do you build the backend database as well, or just the frontend map?
As a full-stack developer, I build the entire end-to-end system. For the Standard and Premium packages, this includes setting up robust backend architectures utilizing Python/Node.js and spatial databases like PostgreSQL with PostGIS to securely manage and query your geographic datasets.
Can you integrate this spatial software into my existing React or Next.js application?
Yes! I specialize in modern web development frameworks. I can build standalone geospatial dashboards or seamlessly integrate complex Mapbox, Leaflet, or Google Maps API logic directly into your existing React or Next.js architecture.
How will I update the map data once the project is finished?
I build systems designed for easy maintenance. Depending on your package, your map will pull live data directly from a custom admin dashboard, your PostgreSQL database, or even a synced Google Sheet, meaning you can update locations instantly without writing a single line of code.
Reviews
3 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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Most relevant
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ejrairnet
United States
Ongoing collaborationExcellent experience working with Sehan. He took the time to understand a fairly complex technical project, communicated clearly throughout the milestone, and consistently thought beyond simply checking boxes on the specification. What impressed me most was his attention to architecture, documentation,...
$400-$600
Price
10 days
Duration
S 
Seller's Response
Helpful?E ejrairnet
United States
Ongoing collaborationSehan did an excellent job on this project. He was extremely responsive, thoughtful, and technically capable throughout the entire process. What impressed me most was his willingness to understand the larger goals of the project rather than simply completing a list of tasks. Communication was excellent,...
$100-$200
Price
8 days
Duration
S Seller's Response
Helpful?E ejrairnet
United States
Ongoing collaborationExcellent experience working with Sehan! He’s knowledgeable, professional, responsive, and genuinely invested in the success of the project. His communication has been outstanding, and he takes the time to understand the bigger picture rather than simply completing tasks. He’s thoughtful about technical...
$400-$600
Price
3 weeks
Duration
S Seller's Response
Helpful?
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
E ejrairnet
United States
Ongoing collaborationExcellent experience working with Sehan. He took the time to understand a fairly complex technical project, communicated clearly throughout the milestone, and consistently thought beyond simply checking boxes on the specification. What impressed me most was his attention to architecture, documentation,...
$400-$600
Price
10 days
Duration
S Seller's Response
Helpful?E ejrairnet
United States
Ongoing collaborationSehan did an excellent job on this project. He was extremely responsive, thoughtful, and technically capable throughout the entire process. What impressed me most was his willingness to understand the larger goals of the project rather than simply completing a list of tasks. Communication was excellent,...
$100-$200
Price
8 days
Duration
S Seller's Response
Helpful?E ejrairnet
United States
Ongoing collaborationExcellent experience working with Sehan! He’s knowledgeable, professional, responsive, and genuinely invested in the success of the project. His communication has been outstanding, and he takes the time to understand the bigger picture rather than simply completing tasks. He’s thoughtful about technical...
$400-$600
Price
3 weeks
Duration
S Seller's Response
Helpful?
