Lyon Ambrosio Djuanda

Informatics Engineering Student & Quality Assurance Specialist

I'm an Informatics Engineering student at Universitas Negeri Semarang with hands-on experience in end-to-end testing, API validation, and software quality assurance for healthcare systems.

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About Me

Lyon Ambrosio Djuanda Professional Photo

Hello! I'm Lyon Ambrosio Djuanda, an Informatics Engineering student at Universitas Negeri Semarang (GPA 3.86/4.00) with practical experience as a Quality Assurance intern in the healthcare sector. I focus on building reliable software through end-to-end testing, regression testing, and API validation while maintaining a strong foundation in data and web technologies.

I have managed full bug lifecycles in Jira, supported EMR workflow validation with cross-functional hospital stakeholders, and contributed to published research in machine learning and user experience analysis. My proudest achievement remains being a Global Nominee at NASA Space Apps Challenge, and I continue to sharpen my skills through projects, certifications, and collaborative product development.

Syntropy Team at NASA Space Apps Challenge

“The most important thing I've learned is no matter how unlucky you are, opportunity always comes again. Opportunity will come to those who don't give up, those who are willing to try again. I believe there is no such a thing as a coincidence, even if it is indeed a coincidence, time will prove how that coincidence is a real coincidence or not.”

– מישהו שעדיין מנסה.

Projects

NASA Exoplanets Identifier

AI Engineer

Sep – Oct 2025

AI platform to validate exoplanet discoveries. Earned Global Nominee status.

View Project

Performance Evaluation of Gradient Boosting Techniques for Predicting Customer Purchase Decisions

Research Contributor (Second Author)

Published Apr 2026

Published research on comparative gradient boosting performance for purchase prediction.

View Project

User Experience Analysis of Gocar Search Features in the Gojek Application

Lead Researcher (First Author)

Published Jan 2025

Published UX research using SUS framework and statistical analysis.

View Project

UKT Prediction – Indonesian Public University Tuition Fee Predictor

Data Scientist & Full Stack Developer

Oct – Nov 2025

ML research comparing Random Forest and Gradient Boosting algorithms for prediction.

View Project

LungAI – Deep Learning vs. Random Forest for Lung Cancer Risk Prediction

Data Scientist & Full Stack Developer

Sep – Oct 2025

Healthcare AI comparing deep learning and Random Forest algorithms for prediction.

View Project

Know The Horror – Game Prototype Development

Game Developer

Feb – Jul 2025

2.5D psychological horror RPG prototype developed using Unity game development.

View Project

Predicting Purchase Likelihood Using XGBoost, LightGBM, and CatBoost with Comprehensive Customer Review Data and Demographics

Data Scientist

Oct 2025 - Nov 2025

ML project comparing XGBoost, LightGBM, and CatBoost algorithms for prediction.

View Project

Phetrima – Prophet and ARIMA Forecasting Models Comparison

Full Stack Developer & Data Scientist

Aug – Sep 2025

Web application comparing Prophet and ARIMA forecasting models for analysis.

View Project

Healtha – Digital Health Monitoring System

Full Stack Developer

Apr – Jun 2025

Full-stack health monitoring system designed for elderly patients.

View Project

I-SECRET's Official Website Development

UI/UX Developer

Apr – Aug 2024

UI/UX design and development project for I-SECRET organization official website.

View Project

Experience

Work Experience

Quality Assurance Intern

Imperial Healthtech

Semarang | Jan 2026 – Present

•Managed full bug lifecycle in Jira and documented 100+ critical issues across EMR, Surgery, and Pharmacy modules.
•Executed E2E and regression testing on web and microapp platforms, including API validation with Postman for MedMinutes EMR v2 and Clinical Forms.
•Collaborated with hospital IT teams, doctors, nurses, and medical record/casemix staff to validate workflows and user requirements.

Research Experience

Second Author

Performance Evaluation of Gradient Boosting Techniques for Predicting Customer Purchase Decisions

Published in JUTIF | Apr 2026

•Contributed to comparative analysis of Gradient Boosting algorithms with academic supervisor collaboration.
•Developed and optimized machine learning models for purchase decision prediction using tabular datasets.
•Supported research methodology and data validation process to meet publication standards.

First Author

User Experience Analysis of Gocar "Search for a Pickup" and "Search for a Destination" Features

Published in ILKOMINFO | Jan 2025

•Led end-to-end usability research process for key Gocar user flows in the Gojek application.
•Designed framework and collected primary data using the System Usability Scale (SUS).
•Performed statistical analysis with IBM SPSS to identify critical pain points and usability findings.

Organization Experience

Event Staff

Grand Launching Workshop PKM 2024

Semarang | Aug – Oct 2024

•Collaborated effectively within the Events Division team to design the event flow and ensure the smooth execution of I-SECRET ILKOM UNNES's main event.

Event Staff

UNNES Computer Science Student Orientation

Semarang | Jul – Sep 2024

•Played an active role in planning and executing a series of orientation events, successfully welcoming and integrating new students into the Computer Science Department.

Event Leader

World Food Day and Language Month School Event

Jakarta | Sep – Nov 2021

•Managed and coordinated the full event lifecycle, ensuring seamless planning and execution through effective cross-team communication.

Media Staff

I-SECRET ILKOM UNNES

Semarang | Feb 2024 – Jan 2025

•Managed digital content and promotional materials for organization social media channels.
•Coordinated Grand Launching & Workshop PKM 2024 schedule and logistics as event committee member.
•Collaborated with creative and technical teams to keep event promotion and visual identity consistent.

Academic Staff

SMA Santo Kristoforus II Student Council

Jakarta | Jan 2021 – Dec 2021

•Involved in planning programs aimed at improving student academic achievement.

Education

Universitas Negeri Semarang

Bachelor of Informatics Engineering

Semarang | Aug 2023 – Jul 2027 (Expected)

Current GPA: 3.86/4.00

SMA Santo Kristoforus II

Mathematics and Science

Jakarta | Jul 2020 – Jun 2023

Grade: 82.36/100

Achievements & Certifications

Professional certifications and achievements demonstrating continuous learning and expertise

NASA International Space Apps Challenge

Jakarta's Best Mission Concept and Global Nominee 2025

NASA

Oct 2025

Achievement

Information Technology Fundamentals

Comprehensive understanding of core IT concepts and technologies

IBM

2025

Certification

Automation Testing

Hands-on automation testing learning path and quality assurance practice

TestMu AI

Jan 2026

Certification

Artificial Intelligence Fundamentals

Fundamental concepts and principles of Artificial Intelligence

IBM

2025

Certification

CCNA: Introduction to Networks

Fundamental networking concepts and Cisco networking technologies

Cisco

Feb 2025

Certification

Introduction to Cybersecurity

Essential cybersecurity principles and best practices

Cisco

2025

Certification

Building AI-Powered Search with MongoDB Vector Search

Advanced AI-driven search capabilities using MongoDB Vector Search

MongoDB

2025

Certification

Building RAG Apps Using MongoDB

Development of Retrieval-Augmented Generation applications with MongoDB

MongoDB

2025

Certification

CRUD Operations in MongoDB

Mastery of Create, Read, Update, Delete operations in MongoDB

MongoDB

2025

Certification

From Relational Model (SQL) to MongoDB's Document Model

Migration from SQL relational databases to MongoDB document model

MongoDB

2025

Certification

MongoDB Basics for Students

Fundamental concepts and operations in MongoDB database system

MongoDB

2025

Certification

Belajar Dasar AI

Fundamental concepts and applications of Artificial Intelligence

Dicoding Indonesia

Oct 2025• Expires Oct 2028

Certification

Belajar Dasar-Dasar DevOps

Core principles and practices of DevOps methodology

Dicoding Indonesia

Nov 2023

Certification

Enhanced Development with GitHub Copilot Integration

Advanced integration and usage of GitHub Copilot for enhanced development

Wilco

2025

Certification

GitHub Copilot: Code Smarter

Smart coding practices using GitHub Copilot tools

Wilco

2025

Certification

GitHub Fundamentals

Essential GitHub platform features and workflows

Wilco

2025

Certification

Transform Your Code: GitHub Copilot Magic

Code transformation and optimization using GitHub Copilot

Wilco

2025

Certification

Skills & Languages

Programming Languages

PythonJavaC++JavaScriptTypeScriptHTMLCSSSQLPHP

Technologies & Frameworks

Node.jsExpress.jsFlaskRESTful APIGraphQLNext.jsReactLaravelTensorFlowPyTorchScikit-learnPandasNumPyMySQLGitPostmanJiraE2E TestingRegression TestingAPI Testing

Tools & Software

FigmaUnityJupyterGoogle ColabMs. ExcelMs. WordIBM SPSSMATLAB

Interests

Data ScienceWeb Development

Language Proficiency

Bahasa Indonesia

Native

Language

English

Professional Working Proficiency

Language

Chinese

Elementary Proficiency

Language

Get In Touch

Feel free to reach out to me for any opportunities, collaborations, or just to say hello!

Email

lyon.ambrosio.djuanda@gmail.com

Phone

+62 821 2532 1627

Location

Jakarta, Indonesia

Instagram

@lyon_a.d