Hello, I'm
Nathaniel Steave
Harjanto.
Fresh Informatics Graduate &
Full-Stack / Data Science Enthusiast.
Graduated with Honors (GPA: 3.55 / 4.00) from Sebelas Maret University. Skilled in building production-ready web applications with Laravel, FastAPI, and MySQL, alongside hands-on expertise in machine learning, LLM integration, and interactive data analytics.
01. About Me
I'm a fresh Informatics graduate from Sebelas Maret University (UNS) with Honors (GPA: 3.55 / 4.00). I bridge the gap between robust software engineering and intelligent data-driven solutions, turning complex business requirements into high-performance digital products.
My background combines full-stack web development (Laravel, FastAPI, PHP, JavaScript, MySQL, REST APIs) with end-to-end data science and AI applications (Python, Random Forest, LLM Integration, Looker Studio, Streamlit). Having completed internships in AI and IT along with Kampus Merdeka independent study, I am excited to bring technical rigor and creative problem-solving to high-impact engineering teams.
02. Education
Sebelas Maret University (UNS)
Bachelor of Informatics (S1 Informatika) • 2022 – 2026 (4 Years 0 Months)
03. Experience
Software Developer Intern
PT Tiga Serangkai Inti CorporaIT Intern
SMK Negeri 4 Klaten- Built full-stack web-based attendance system with geolocation and geofencing (100m radius) using Laravel, Blade, MySQL, & REST API.
- Directed entire SDLC from Figma UI/UX prototyping to backend architecture, debugging, code review, testing, and deployment.
- Digitized manual attendance operations, improving institutional data integrity and administrative efficiency.
Data Science Independent Study
Kampus Merdeka — Startup Campus- Engineered Random Forest Regression models to predict CO₂ emissions in Spain to support sustainability initiatives.
- Conducted end-to-end preprocessing, feature engineering, and model evaluation.
- Built interactive Looker Studio dashboards translating complex environmental metrics into actionable stakeholder insights.
- Recognized as Presenter at the "Selection to Showcase" event for outstanding technical execution.
Staff of Institutional Independence
HIMASTER UNS (Himpunan Mahasiswa Informatika)- Designed and published bi-monthly business development infographics and promotional media across social channels.
- Managed organizational sales operations, ensuring 100% accuracy in transaction verification, proof collection, and revenue tracking.
Fundraising Staff
Pekan Informasi dan Teknologi (P!NGFEST)- Organized fundraising campaigns for P!NGFEST, achieving a revenue target of ~IDR 10 million over 6 months.
- Reported monthly fundraising income and optimized resource management.
04. Projects
05. Skills & Technology
Programming Languages
Software & Web Development
AI & Data Science
Tools & Workflow
06. Currently Learning
React & Next.js
Building modern server-rendered web applications with App Router & Server Actions.
Deep Learning
Exploring neural networks, transformers, and computer vision with PyTorch & HuggingFace.
DevOps & Cloud
Mastering containerization, CI/CD pipelines, and AWS cloud architecture.
07. Certificates
08. What's next?
Get In Touch
I'm always open to discuss new opportunities, collaboration projects, or just exchange ideas. Feel free to reach out!