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I am a software engineering undergraduate and former WSO2 engineering intern with hands-on experience building and testing API management connectors, AI/LLM routing, and RAG-based assistants. I enjoy working across backend and full-stack systems, integrating multiple AI providers and delivering reliable features. I have completed 50+ projects for international clients, adapt quickly to new technologies, and focus on shipping working solutions with good testing and performance. I am open to remote roles worldwide in backend, full-stack, API platforms, or applied AI.…I am a software engineering undergraduate and former WSO2 engineering intern with hands-on experience building and testing API management connectors, AI/LLM routing, and RAG-based assistants. I enjoy working across backend and full-stack systems, integrating multiple AI providers and delivering reliable features. I have completed 50+ projects for international clients, adapt quickly to new technologies, and focus on shipping working solutions with good testing and performance. I am open to remote roles worldwide in backend, full-stack, API platforms, or applied AI.

Pamal Neerna Jayasinghe

Software Engineer, Back-End Developer, Full Stack Developer, +2

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I am a software engineering undergraduate and former WSO2 engineering intern with hands-on experience building and testing API management connectors, AI/LLM routing, and RAG-based assistants. I enjoy working across backend and full-stack systems, integrating multiple AI providers and delivering reliable features. I have completed 50+ projects for international clients, adapt quickly to new technologies, and focus on shipping working solutions with good testing and performance. I am open to remote roles worldwide in backend, full-stack, API platforms, or applied AI.…I am a software engineering undergraduate and former WSO2 engineering intern with hands-on experience building and testing API management connectors, AI/LLM routing, and RAG-based assistants. I enjoy working across backend and full-stack systems, integrating multiple AI providers and delivering reliable features. I have completed 50+ projects for international clients, adapt quickly to new technologies, and focus on shipping working solutions with good testing and performance. I am open to remote roles worldwide in backend, full-stack, API platforms, or applied AI.

Available to hire

I am a software engineering undergraduate and former WSO2 engineering intern with hands-on experience building and testing API management connectors, AI/LLM routing, and RAG-based assistants. I enjoy working across backend and full-stack systems, integrating multiple AI providers and delivering reliable features.

I have completed 50+ projects for international clients, adapt quickly to new technologies, and focus on shipping working solutions with good testing and performance. I am open to remote roles worldwide in backend, full-stack, API platforms, or applied AI.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

Sinhala, Sinhalese

Fluent

English

Advanced

Work Experience

Software Engineering Intern at WSO2 Lanka (Private) Limited

June 1, 2025 - May 31, 2026

Built and tested a Ballerina PayPal Connector for external payment integration. Implemented semantic base model routing and multi-provider routing policies in WSO2 API Manager (versions 4.6.0 and 4.7.0). Developed AI provider transformation routing policies to connect OpenAI-compatible requests with Azure OpenAI, Anthropic, Mistral, and Gemini providers. Added UI components for a WSO2 API Manager Documentation Assistant and researched an internal RAG-based Q&A assistant. Resolved an AWS Bedrock model request routing issue and maintained Postman collections for API Manager 4.5.0, 4.6.0, and 4.7.0. Performed release testing for WSO2 API Manager 4.6.0/4.7.0 and WSO2 API Platform 1.0.

Freelance Full-Stack & WordPress Developer (Level 2 Seller) at Fiverr

September 1, 2023 - Present

Delivered 50+ client projects including e-commerce sites, business websites, blogs, and portfolios. Built and deployed WordPress websites and also custom-coded responsive sites with client-specific functionality. Applied performance optimization and technical SEO practices, managed requirements, and collaborated with remote clients to deliver timely results.