Hello, world. I'm
Lenno Hartono
Data & AI enthusiast crafting intelligent systems that turn complexity into clarity.
// About
Bridging Data & Intelligence
I'm a final-year Information Technology student at RMIT University (double degree with Bina Nusantara University), passionate about building AI-powered solutions that make a real difference.
From developing LLMs for healthcare clinical decision-making to building recommender systems for telecom revenue growth, I thrive on turning complex problems into intelligent, scalable solutions. My work spans AI/ML, RAG-based systems, full-stack development, and cloud platforms.
Beyond the code, I've led a student association as Regional President, published research at international conferences (IEEE), and collaborated with doctors and industry professionals to bring AI from the lab to the real world.
// Experience
Where I've Contributed
Developer (Work-Integrated Learning)
Open Access Publishing Association (OAPA)
Building CopyEditor AI, an AI-powered platform that accelerates the academic copyediting process for published authors.
- ▸Developed AI platform using OpenAI and Anthropic APIs for editorial feedback generation
- ▸Engineered prompt logic and safeguards to constrain outputs to copyediting tasks only
- ▸Projected to speed up copyediting by 4-5x compared to manual human process
Application Developer Intern
PT. Sarana Solusindo Informatika (Solusi)
Developed internal software solutions and introduced AI-driven workflows to boost productivity across divisions.
- ▸Built 3 internal tools using Microsoft Power Platform for cross-division use
- ▸Increased employee productivity by ~20% after software release
- ▸Introduced AI workflows that improved work efficiency by ~35%
Research Assistant
Bina Nusantara University
Conducted research on Large Language Models for healthcare, collaborating with doctors to build clinical decision-support tools.
- ▸Developed LLMs for healthcare settings aiding clinical decision-making
- ▸Implemented RAG to enhance model performance, achieving 81% accuracy
- ▸Collaborated with doctors to understand clinical needs and improve model output
- ▸Conducted research on latest advancements in LLM and healthcare tech
Regional President (Senayan)
HIMTI Binus University
Led the Computer Science student association at Binus University Senayan, organizing events and fostering community.
- ▸Managed CS students organizing workshops, bonding events, and exam prep sessions
- ▸Increased activist candidate registrants by 60% through engagement strategies
- ▸Fostered a collaborative community promoting mutual support among students
// Projects
Things I've Built
CopyEditor AI
Built in collaboration with OAPA, CopyEditor AI accepts Word (.docx) inputs and uses OpenAI and Anthropic LLMs to provide copyediting feedback. Engineered prompt safeguards to prevent generative content creation while ensuring high-quality editorial output.
AnamnesaGPT
Developed in collaboration with RSUD Pasar Minggu and published at ICCSCI 2025, AnamnesaGPT integrates advanced NLP to understand patient symptoms and provide treatment guidance. Increased diagnostic precision by 50%.
Telecom Recommender System
Recommender system boosting Indonesian telecom revenue through customer segmentation, published at IEEE ICISS 2024.
// Skills
My Tech Stack
// Contact
Let's Build Something Intelligent Together
I'm currently looking for opportunities in Data & AI related fields. Whether you have a question, an opportunity, or just want to say hi, my inbox is always open 😉
hello@hartono.dev