Chamara Wimalaweera
@chamarawimalaweera
I build LLM-driven backend systems that turn document-heavy workflows into production automation.
Sri LankaWhat I'm looking for
At Britanext, I build backend services, REST APIs, and LLM-driven automation for enterprise clients. I take features from unclear requirements through implementation, testing, and production release.
I replaced manual insurance document workflows with FastAPI and OpenAI-powered services, cutting handling time from hours to minutes and reducing processing time by 60%. I also use Microsoft Presidio to redact sensitive customer data before it reaches models.
Across projects including BOSIO and Travelyonka, I've built NestJS and Node.js services, PostgreSQL and MongoDB data models, AI-assisted quotation and travel-planning features, and integrations for web and mobile products. I own containerised CI/CD deployments across Azure and AWS and focus on root-cause fixes for production issues.
Earlier, I delivered full-stack client applications remotely at Syntax Erreur and built the Star eWings learning platform, which reached #1 in Sri Lanka's Education category on Google Play and the App Store. I work comfortably with distributed teams and international clients across web, mobile, backend, and AI products.
Experience
Work history, roles, and key accomplishments
Software Engineer
Britanext
Nov 2025 - Present (10 months)
Design and build backend services and REST APIs for enterprise clients, and develop LLM-driven automation and AI product features with OpenAI APIs. Automated manual document workflows with Python and LLM-backed services, reducing processing time by 60%.
Associate Software Engineer
Britanext
Nov 2024 - Oct 2025 (11 months)
Delivered backend APIs, database integrations and third-party service integrations for international client applications. Built real-time application features and AI-assisted functionality with OpenAI APIs, including automated quotation generation and trip planning.
Software Engineer Intern
Syntax Erreur
Dec 2023 - Sep 2024 (9 months)
Developed full-stack web and mobile applications for international clients across multiple business domains, working remotely across time zones. Implemented backend REST APIs, database integrations, responsive frontends and real-time application features.
Education
Degrees, certifications, and relevant coursework
University of Moratuwa
BSc (Hons), Information Technology
2022 -
Pursuing a BSc (Hons) in Information Technology with a specialization in software engineering, cloud technologies, and intelligent systems. Final year research focuses on an Explainable AI System for tactical analysis and simulation of football set pieces.
Microsoft Learn
AI Engineer Career Path, Artificial Intelligence
Completed the AI Engineer Career Path, covering AI engineering concepts and practices.
DeepLearning.AI
LangChain for LLM Application Development, Large Language Models
Completed the LangChain for LLM Application Development course, focusing on building applications with large language models.
Machine Learning Crash Course, Machine Learning
Completed the Machine Learning Crash Course, covering fundamental machine learning concepts.
University of Helsinki
Elements of AI and Ethics of AI, Artificial Intelligence
Completed the Elements of AI and Ethics of AI courses, covering AI fundamentals and ethical considerations.
Tech stack
Software and tools used professionally
Availability
Location
Sri LankaAuthorized to work in
Job categories
Skills
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