# Lakindu Pahesara > Lakindu Pahesara (goes by Pahesara; GitHub: Pahezara) is a Colombo, Sri Lanka based developer, data scientist and the founder of CEYLAI Labs (Ceylon Artificial Intelligence & Digital Innovation Laboratories), a software, web and AI studio working with clients in the EU, UK and US. Paid client work since 2022. BSc (Hons) Data Science, University of Plymouth (delivered via NSBM Green University), Second Class Upper, 2026. Facts that have not been confirmed are left off the site rather than guessed. Every metric is published with its source. ## What he does - AI and data: LLM agents with tool-enforced grounding (Deep); Dashboards and data apps (Deep); Deep learning in PyTorch (Working); Medical imaging: classification and segmentation (Working); LLM fine-tuning with QLoRA, local inference (Working); Explainability: Grad-CAM, lesion masks (Working); RAG and MLOps (Learning) - Web and product: Next.js and React (Deep); Node.js services and APIs (Deep); Streamlit and ReportLab document engines (Deep); Performance and Core Web Vitals (Deep); FastAPI services (Working); Technical SEO and structured data (Working); Native mobile apps (Learning) - Brand and growth: Identity systems (Deep); Design standards and QA (Deep); Go-to-market for small businesses (Working); Content and short-form scripts (Working); Social growth for new sectors (Learning) ## Case studies - [Multilingual WhatsApp Commerce Agent](https://pahesara.vercel.app/work/whatsapp-commerce-agent): A WhatsApp agent that answers shop customers in English, Sinhala, Tamil and Singlish, and can only quote what the product catalogue says. Status: Live and scaling. Stack: Node.js, Meta WhatsApp Cloud API, Claude Haiku 4.5, Tool use. - [CEYLAI Labs: studio and identity](https://pahesara.vercel.app/work/ceylai-labs): A Sri Lankan software, web and AI studio built around one mark, a drop that is also the island, and one quality standard applied to every build. Status: Operating. Stack: Brand system, Positioning, The House Standard, Astro. - [Invoice and Quotation Engine for Pehesara Engineers](https://pahesara.vercel.app/work/invoice-engine): A phone-first app that produces invoices and quotations indistinguishable from the company letterhead, and every PDF it makes can be opened again for editing. Status: In daily use. Stack: Python 3.12, Streamlit, ReportLab, Carlito. - [RATNADEEPA Gem Dealer Showcase](https://pahesara.vercel.app/work/ratnadeepa): A dark vault of a website where every stone is shown under two lights, D65 daylight and 2800 K tungsten, because that is how dealers actually judge colour. Status: Shipped. Stack: HTML, CSS, JavaScript, SVG. - [AI-Powered Stroke Emergency Triage System](https://pahesara.vercel.app/work/stroke-triage-ai): Two medical imaging models, one on CT and one on MRI, combined into a single triage decision that shows its evidence and exports a clinical-style PDF report. Status: Research prototype. Stack: PyTorch, MONAI, EfficientNet-B0, 3D U-Net, Grad-CAM, FastAPI, React, Tailwind CSS, ReportLab. - [Infinity Consulting Rebuild](https://pahesara.vercel.app/work/infinity-consulting): A consulting firm's website rebuilt from a 1.77 MB homepage with a blocked hero image to about 125 kB, with a pre-launch checklist that caught what the old site never had. Status: Delivered. Stack: Astro, Static HTML, Self-hosted fonts, AVIF. - [Bilingual Mental Wellness Chatbot](https://pahesara.vercel.app/work/wellness-chatbot): Supportive conversation in Sinhala and English from a locally hosted, QLoRA-tuned Qwen2.5-7B, with a deterministic safety route that bypasses the model for high-risk messages. Status: Working prototype. Stack: Qwen2.5-7B-Instruct, QLoRA, PEFT, TRL, Ollama, GGUF Q4_K_M, RoBERTa GoEmotions, FastAPI, React, TypeScript, SQLite. ## The story, in eight chapters - [01. An island with a useful clock.](https://pahesara.vercel.app/story#island) (Colombo): Home is Colombo, on the west coast of Sri Lanka. The island is small, but its clock is well placed: at GMT+5:30, my afternoon is Europe's morning, and my evening is the start of New York's day. - [02. Paid from the first project.](https://pahesara.vercel.app/story#first-build) (2022): I took my first paid build in 2022, while I was studying data science. Websites and apps at first, then the tools behind them. - [03. A studio with one promise.](https://pahesara.vercel.app/story#studio) (CEYLAI): CEYLAI Labs stands for Ceylon Artificial Intelligence and Digital Innovation Laboratories. A long name for a simple promise: one person answers the client, from the first call to handover. That person is me. - [04. A degree, and two systems to show for it.](https://pahesara.vercel.app/story#degree) (2026): BSc (Hons) Data Science from the University of Plymouth, delivered through NSBM Green University. I finished in 2026 with a Second Class Upper. - [05. In a stroke, the scan decides the treatment.](https://pahesara.vercel.app/story#stroke) (May 2026): Treatment depends on knowing quickly whether a patient is bleeding or has a blocked vessel, and emergency imaging often waits for a radiologist. - [06. A chatbot that knows when to step aside.](https://pahesara.vercel.app/story#listener) (June 2026): The second system talks. It offers supportive conversation in Sinhala and English, from a Qwen2.5-7B model I fine-tuned with QLoRA and run locally. - [07. Off the clock, it is usually cars.](https://pahesara.vercel.app/story#off-clock) (Weekends): Photographing them, modifying them, and building the tools that clean up the photos. One of those tools chains LaMa inpainting with rembg segmentation, so a car comes out clean with the distractions removed. - [08. Now, and what comes next.](https://pahesara.vercel.app/story#now) (Now): Today I run CEYLAI Labs, roll the WhatsApp agent out to more businesses and keep two projects in the lab. ## Pages - [Home](https://pahesara.vercel.app/): the cover. Add ?lens=client, ?lens=recruiter or ?lens=engineer to read the site for that audience. - [Work](https://pahesara.vercel.app/work): Seven case studies, told three ways - [Story](https://pahesara.vercel.app/story): How I got here, in eight chapters - [Studio](https://pahesara.vercel.app/studio): CEYLAI Labs, its builds and its standard - [Now](https://pahesara.vercel.app/now): What I am doing this month - [Contact](https://pahesara.vercel.app/contact): Start a project or just say hello - [CV](https://pahesara.vercel.app/cv): printable CV; PDF at https://pahesara.vercel.app/cv/lakindu-pahesara-cv.pdf ## Contact - Email: sajlpahesara@gmail.com - GitHub: https://github.com/Pahezara - LinkedIn: https://www.linkedin.com/in/lakindu-pahesara - CEYLAI Labs: https://www.ceylailabs.com - Availability: Available for Q4 2026 projects. I reply within 24 hours.