"I am a results-driven Full-Stack Engineer with over 4 years of experience specializing in building scalable, AI-enabled web applications. With a First Class Honours degree in Computer Science (GPA 4.0), I combine deep theoretical knowledge with hands-on expertise in modern frameworks like React, Next.js, Angular, and Node.js.  My core strength lies in bridging the gap between standard web development and cutting-edge AI. I have a proven track record of integrating OpenAI APIs and LangChain to create intelligent systems, such as conversational assistants and automated content generators.  Why Hire Me? • Full-Stack Expertise: Proficient in the entire development lifecycle, from responsive UI design (Tailwind/Material UI) to robust backend architectures (Node.js/Python/Spring Boot).  • AI & Automation Specialist: Experienced in building AI-powered platforms like 'Ashogu' and vehicle event systems that significantly reduce manual workloads.  • Cloud & DevOps Savvy: Skilled in deploying production-grade solutions on AWS, Azure, and Firebase with Docker and CI/CD pipelines to ensure >99% uptime.  • Proven Impact: I have helped businesses reduce backend latency by 35% and automate up to 60% of manual review tasks.  Whether you are a startup looking for an MVP or an enterprise needing a scalable AI solution, I am dedicated to delivering high-quality, high-performance code that drives results."

Geethika Sewwan di

"I am a results-driven Full-Stack Engineer with over 4 years of experience specializing in building scalable, AI-enabled web applications. With a First Class Honours degree in Computer Science (GPA 4.0), I combine deep theoretical knowledge with hands-on expertise in modern frameworks like React, Next.js, Angular, and Node.js.  My core strength lies in bridging the gap between standard web development and cutting-edge AI. I have a proven track record of integrating OpenAI APIs and LangChain to create intelligent systems, such as conversational assistants and automated content generators.  Why Hire Me? • Full-Stack Expertise: Proficient in the entire development lifecycle, from responsive UI design (Tailwind/Material UI) to robust backend architectures (Node.js/Python/Spring Boot).  • AI & Automation Specialist: Experienced in building AI-powered platforms like 'Ashogu' and vehicle event systems that significantly reduce manual workloads.  • Cloud & DevOps Savvy: Skilled in deploying production-grade solutions on AWS, Azure, and Firebase with Docker and CI/CD pipelines to ensure >99% uptime.  • Proven Impact: I have helped businesses reduce backend latency by 35% and automate up to 60% of manual review tasks.  Whether you are a startup looking for an MVP or an enterprise needing a scalable AI solution, I am dedicated to delivering high-quality, high-performance code that drives results."

Available to hire

“I am a results-driven Full-Stack Engineer with over 4 years of experience specializing in building scalable, AI-enabled web applications. With a First Class Honours degree in Computer Science (GPA 4.0), I combine deep theoretical knowledge with hands-on expertise in modern frameworks like React, Next.js, Angular, and Node.js. 
My core strength lies in bridging the gap between standard web development and cutting-edge AI. I have a proven track record of integrating OpenAI APIs and LangChain to create intelligent systems, such as conversational assistants and automated content generators. 
Why Hire Me?
• Full-Stack Expertise: Proficient in the entire development lifecycle, from responsive UI design (Tailwind/Material UI) to robust backend architectures (Node.js/Python/Spring Boot). 
• AI & Automation Specialist: Experienced in building AI-powered platforms like ‘Ashogu’ and vehicle event systems that significantly reduce manual workloads. 
• Cloud & DevOps Savvy: Skilled in deploying production-grade solutions on AWS, Azure, and Firebase with Docker and CI/CD pipelines to ensure >99% uptime. 
• Proven Impact: I have helped businesses reduce backend latency by 35% and automate up to 60% of manual review tasks. 
Whether you are a startup looking for an MVP or an enterprise needing a scalable AI solution, I am dedicated to delivering high-quality, high-performance code that drives results.”

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent
Sinhala, Sinhalese
Advanced

Work Experience

Software Engineer at DDI Labs
January 1, 2023 - Present
Full-stack development and AI-driven solutions across mobile and web platforms using Flutter, Angular, React, Azure, and Firebase. Led cloud deployments and test automation; contributed to enterprise platform improvements and payment gateway integrations across cross-border projects. Delivered scalable, reliable software for clients in Australia, Sri Lanka, the UK, and the UAE.
AI Chatbot Developer at Upwork
January 1, 2023 - Present
Designed and deployed custom AI chatbot solutions using Python, Flask and OpenAI APIs, integrating LangChain and LLMS workflows; enabled multi-language support and seamless user interactions in freelance projects.
AI Assistant Platform Developer at Ashogu
January 1, 2023 - Present
Built a multi-language AI assistant platform with LLMS workflows using Angular, Flask, OpenAI, and MongoDB; supported real-time chat, prompts, and AI features for UK-based platform.
Software Engineer at Parkease
January 1, 2024 - Present
Implemented a complete Stripe payment gateway integration in a React/Node.js stack, delivering secure and seamless payment flows for an Australia-based platform.
Software Engineer at DDI Labs
January 1, 2023 - Present
Flutter, Angular, React, Azure, Azure DevOps, Firebase; contributed to multiple projects including Smash Repair, Gamuda, Baia da, Corsight Automation; delivered AI-driven, cloud-based, and automation solutions across mobile and web platforms.
Software Engineering Intern at Grubtech
September 20, 2023 - Present
Dockerized Spring Boot applications; CI/CD via CircleCI; SonarQube; JUnit; Mockito; React; Redux; Kafka; AWS EC2; AWS Lambda; S3; DynamoDB; Flutter; Git.
AI Chatbot Developer at Upwork
January 1, 2023 - Present
Designed and deployed custom AI chatbot solutions using Python (Flask, LangChain, Hugging Face, OpenAI APIs).
AI Assistant Platform Developer at Ashogu
January 1, 2023 - Present
Built a multi-language AI assistant platform (Angular, Flask, Python) leveraging OpenAI APIs and MongoDB.
Full Stack Developer at Parkease
January 1, 2024 - Present
Implemented a complete Stripe payment gateway integration (React, Node.js); delivered secure, seamless payment flows.
Software Engineer at DDI Labs
January 1, 2023 - Present
Software Engineer at DDI Labs delivering cross-platform solutions with Flutter, Angular, and React; cloud deployments on AWS/Azure and Firebase; AI-driven enhancements across enterprise projects; contributed to automated testing and scalable IT solutions.
Associate Software Engineer & AI Developer at Gazru (Pvt) Ltd
January 1, 2023 - Present
OpenAI, LLMs, LangChain, vector databases, Python, Angular, prompt engineering, and AWS; developing AI-enabled features and cloud-based solutions across platforms.
AI Chatbot Developer at Upwork
January 1, 2023 - Present
Designed and deployed custom AI chatbot solutions using Python (Flask, LangChain, Hugging Face, OpenAI APIs).
Software Engineer Intern at Grubtech
September 20, 2023 - October 21, 2025
Dockerized Spring Boot applications for faster deployments via CircleCI pipelines; backend API testing and reliability improvements.
AI Chatbot Developer at Upwork
January 1, 2023 - Present
Designed and deployed custom AI chatbot solutions using Python (Flask, LangChain, Hugging Face, OpenAI APIs).
Software Engineer at Parkease
January 1, 2024 - Present
Implemented a paygate-integrated hiring and interviewing platform using React and Node.js; Stripe integration; ensured secure and seamless payment flows.
Software Engineer at CountIQ
January 1, 2025 - Present
Developed an Event Monitoring System with Azure Functions, Event Hub, and backend APIs; captured events and integrated with backend systems.
Software Engineer at DDI Labs Pty Ltd
January 1, 2023 - January 1, 2023
Worked on multiple production-level projects spanning web, AI, and cloud domains for clients in Australia. Developed and maintained multi-tenant applications using Angular, React, and TypeScript; integrated Azure Functions and REST APIs for event processing and automation, reducing backend latency by 35%. Delivered AI-enabled vehicle event system (Flutter + Firebase), cutting manual inspection time by 40%. Built real-time dashboards with React + Node.js + Azure Event Hub for telemetry monitoring. Implemented Stripe & PayDock payment integrations for enterprise clients (Gamuda, Baida). Integrated OpenAI API and LangChain for conversational intelligence; managed deployments with Docker + Azure DevOps CI/CD, achieving uptime > 99%.
Software Engineering Intern at Grubtech
December 31, 2023 - December 31, 2023
Created a Kafka-based dashboard (React + Redux) reducing issue-detection time by 50%. Automated deployments via CircleCI and containerized Spring Boot services with Docker. Worked on APIs using AWS Lambda, DynamoDB, and S3 to enhance production reliability.
Full-Stack AI Developer (Freelance) at Upwork / Personal Projects
January 1, 2023 - January 1, 2023
Designed and implemented AI-driven full-stack applications using Next.js, Prisma, Neon, MongoDB. Built dashboards and automation tools, integrated OpenAI APIs and LangChain, and delivered robust, scalable solutions for global clients.
Senior Software Engineer at EFutures
January 1, 2025 - Present
Built and maintained Node.js backend services on AWS, working with SQL databases, REST APIs, and cloud integrations for the award-winning project “Sinque”.
Software Engineer Internship at Grubtech, UAE
January 1, 2023 - Present
Created Kafka-based monitoring dashboard (React + Redux) reducing issue detection time by 50%. Automated deployments via CircleCI and containerized Spring Boot services with Docker. Worked on APIs using AWS Lambda, DynamoDB, and S3 for production reliability. Enhanced microservice testing and quality with JUnit & SonarQube.
Software Engineer at Gazru (Pvt) Ltd, Sri Lanka
January 1, 2023 - Present
Built Ashogu, a multi-tenant AI web platform (Angular + Flask + Python + OpenAI + MongoDB). Implemented LangChain-based automation improving chatbot accuracy by 25%.
Freelance Full-Stack & AI Developer at Upwork / Personal Projects
January 1, 2021 - Present
Designed custom AI chatbots using Python, LangChain, and OpenAI APIs for automation. Built full-stack apps with Next.js, Prisma, Neon, Node.js, MongoDB. Created dashboards and automation tools integrated with AWS and Firebase. Delivered responsive, secure, scalable solutions to global clients.

Education

BSc Computer Science at Eastern University, Sri Lanka
January 1, 2019 - January 1, 2023
BSc Computer Science at Eastern University, Sri Lanka
January 1, 2019 - January 1, 2023
B Sc Computer Science at Eastern University, Sri Lanka
January 1, 2019 - January 1, 2023
B Sc Computer Science at Eastern University, Sri Lanka
January 1, 2019 - January 1, 2023
BSc Computer Science at Eastern University, Sri Lanka
January 1, 2019 - January 1, 2023

Qualifications

Flutter Cloud Core - IBM
January 11, 2030 - October 17, 2025
Spring Boot Linux Administration
January 11, 2030 - October 17, 2025
AWS - Beginner
January 11, 2030 - October 17, 2025
Docker
January 11, 2030 - October 17, 2025
Flutter Cloud Core
January 11, 2030 - October 17, 2025
Spring Boot - Linux Administration
January 11, 2030 - October 17, 2025
AWS - Beginner Course
January 11, 2030 - October 17, 2025
Docker
January 11, 2030 - October 17, 2025
Flutter Cloud Core
January 11, 2030 - October 21, 2025
Spring Boot Linux Administration
January 11, 2030 - October 21, 2025
AWS - beginner course
January 11, 2030 - October 21, 2025
Flutter, Spring Boot, AWS - Beginner Course
January 11, 2030 - October 27, 2025
Linux Administration
January 11, 2030 - October 27, 2025
Docker
January 11, 2030 - October 27, 2025
Flutter, Spring Boot, AWS - beginner course
January 11, 2030 - January 20, 2026
Linux Administration
January 11, 2030 - January 20, 2026
Docker
January 11, 2030 - January 20, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Education, Computers & Electronics, Other