01 GEOSPATIAL MACHINE LEARNING
Project SBAFN
An interactive map of street-level flood-proneness scores in Manila.
My roleData & frontend integration
PROJECT SBAFN / MANILAHELLO, I’M
Rainzle JohnEstuesta.
Junior Context Engineer
at Open iT, Asia Inc.
I build retrieval systems and AI applications.
01 / BACKGROUND
Experience
& education.
- —PresentCURRENT
Junior Context Engineer
Open iT, Asia Inc.
RAG · Agentic AI development · AI Engineering · .NET Framework
- Co-developer of Open iT Insight, the company’s AI agentic chatbot, as part of the Data Science team.
- Focus on AI engineering and collaborate with teams across departments.
- —
Context Engineer Intern
Open iT, Asia Inc.
- Built RAG pipelines with PostgreSQL/pgvector and GraphRAG with triple extraction, multi-hop traversal, and weighted document ranking.
- Developed Recursive Language Model (RLM) orchestration with ReAct reasoning, sandboxed sub-agents, and cited answers.
- Integrated OpenAI and Gemini for extraction, embeddings, and generation; built an n8n agent for code generation.
- Built PDF, DOCX, XLSX, and CSV ingestion with chunking, entity normalization, and embedding-based deduplication.
- —
BS Computer Science
Enverga University
Graduated Magna Cum Laude
02 / ACHIEVEMENTS
Awards
& recognition.
Magna Cum Laude
Enverga University · 2026
BS Computer Science3rd place
BPI DataWave 2024
Machine Learning TrackTop 5 finalist
InnOlympics 2025
Hackathon1st place
CCMS CyberFiesta 2024
MSEUF–CCMS · Feb 2024
PHOTOS01 / 04
Magna Cum Laude · Class of 2026
Enverga University · BS Computer Science, specialization in Data Science.
03 / PROJECTS
Selected projects.
PROJECT SBAFN / MANILA TAGLISH SENTIMENT
“Okay naman ako,
pero medyo pagod.”
pero medyo pagod.”
TagalogEnglishContext
Question + answerXLM-RSentiment
EXAMPLE INPUT
02 NATURAL LANGUAGE PROCESSING
Taglish Sentiment Analysis
An XLM-R sentiment model trained on synthetic Tagalog-English intake responses.
My roleNLP pipeline development
View projectLife OSFEATURE OVERVIEW
TasksTrack task progress.
FinancesTrack budgets and expenses.
RIVERPOD HIVE · LOCAL STORAGE
03 APPLICATION DEVELOPMENT
Life OS
An iOS-focused Flutter app for tasks, budgets, and expenses, with local storage.
My roleFull application development
View project04 / PROFILE
About me.
I studied Computer Science at Enverga University, specializing in Data Science.
I work on retrieval systems and LLM workflows, alongside projects in machine learning and app development.
SKILLS & TOOLS
AI & retrieval
Data & machine learning
Language & NLP
Applications
05 / CREDENTIALS
Certifications.
INTERACTIVE
Data sketch.
Switch between scattered and grouped points.
SYNTHETIC DATA
Points grouped into three clusters.
06 / CONTACT