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Sehan D
@sehan_h_d
Software Engineer
Sri Lanka
English, Sinhala, German
About me
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.
Skills
Sehan D
Offline •
Average response time: 1 hour
See my services
Custom Websites
I will build a custom gis web maps using google maps or osm
Full Stack Web Applications
I will develop scalable golang backend microservices and rest apis
Portfolio
Work experience
Engineering Intern
WSO2 • Full-time
Nov 2025 - May 2026 • 6 mos
WSO2 is the world’s #1 open-source integration vendor, helping digitally driven organizations become integration agile through open-source integration and API management solutions. In this role, I worked closely with Go/Golang and Python to develop API platform and gateway features for scalable backend systems. Work included building and improving API gateway functionality, working with API policies, debugging backend issues and writing clean, maintainable code for production-level software. I also gained experience in AI policy development, LLM-based systems and prompt compression concepts. This experience strengthened my skills in backend engineering, API management, integration platforms, clean architecture and solving real-world software engineering problems.
3 Reviews
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Rating Breakdown
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1-3 out of 3 Reviews
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ejrairnet
United States
Ongoing collaboration
Excellent 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,...
Seller's Response
Helpful?
ejrairnet
United States
Ongoing collaboration
Sehan 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,...
Seller's Response
Helpful?
ejrairnet
United States
Ongoing collaboration
Excellent 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...
Seller's Response
Helpful?
