Lasitha Lakshan

Full Stack Developer | Flutter Developer | Mobile Application Developer

Talent

ColomboMember since July 15, 2026

FlutterDartResponsive UINavigation flowsREST API integrationFastAPIPythonFirebaseFirestoreAuthenticationStorageSQLMySQLJavaScriptHTMLCSSGemini AIRetrieval-Augmented Generation (RAG)Computer visionLSTMHL7 FHIR R4HAPI FHIR serverPatientObservationMedicationRequestRiskAssessmentCarePlanJavaGitFigma

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FlutterDartResponsive UINavigation flowsREST API integration

About

Full Stack Developer and Software Engineering undergraduate with hands-on experience at Sri Lanka Telecom (SLT) and independent projects spanning mobile applications, AI-integrated healthcare systems, and API-driven workflows. Skilled in Flutter and Dart mobile development, Python and FastAPI backend development, REST API integration, Firebase, SQL/MySQL, JavaScript, HTML/CSS, application debugging, and Git-based collaboration. Experienced in applying AI and machine learning to real-world products, including large language model (Gemini AI) integration, Retrieval-Augmented Generation (RAG), computer vision, and HL7 FHIR healthcare data interoperability.

Delivered SLT mobile applications including the MySLT App, Video CL App, and Debt Recovery System App, alongside independent projects MediCare SL and Okiz App. Published IEEE researcher in AI-powered Flutter education, integrating computer vision, RAG, and LSTM-based learning analytics for adaptive design-to-code learning.

Experience

Full Stack Developer / Flutter Developer / Freelance Contributor - Sri Lanka Telecom (SLT) - Sri Lanka

(2024-05)

Developed and enhanced Flutter-based mobile application features for SLT customer-facing and operational systems, achieving a 95% successful delivery rate.
Built 60+ mobile screens, reusable UI components, navigation flows, validation logic, and form-based workflows using Flutter and Dart.
Integrated 100+ mobile app features with backend services and REST APIs to support data submission, retrieval, status updates, and business process tracking.
Supported full-stack application delivery by connecting mobile features with database-backed and API-driven workflows, reducing manual processing time by 25%.
Collaborated with cross-functional technical teams to test, debug, troubleshoot, and improve application modules prior to release; continued freelance contributions supporting ongoing maintenance and feature updates.