Data Scientist & AI Engineer

Fajri
Octadiansyah
Umar

// Bekasi, Indonesia  ·  3+ years experience

Data Scientist with over three years of experience developing machine learning models, building data pipelines, and delivering data-driven insights. Master's graduate in Mechanical Engineering from University of Indonesia with strong analytical and problem-solving foundations.

3+
Years
Experience
6+
ML Models
/ Year
9+
Projects
Delivered
3.63
Master's
GPA
Education
Master's in Mechanical Engineering
University of Indonesia  ·  2019–2021
What makes me different
Skills that set me apart from AI
01 —
Problem Solving
Translating ambiguous, real-world business challenges into structured data problems — combining domain context with analytical thinking to deliver practical, actionable solutions.
02 —
Effective Communication
Bridging the gap between technical findings and non-technical stakeholders — presenting data insights clearly, influencing decisions, and aligning cross-functional teams around a shared goal.
03 —
Leadership
Leading data initiatives end-to-end — from defining scope and guiding junior team members to owning delivery accountability and building a culture of data-driven decision-making.
& Continuous Learning . . .
01 —

Experience

Data Scientist Supervisor
Pyridam Farma
Oct 2025 — Present
  • Researched data science and AI technologies, evaluating 5–8 tools and frameworks annually
  • Designed data-driven and AI-based solutions for business needs, completing 4–6 end-to-end projects per year
  • Developed machine learning and AI models for 6 use cases annually
Data Scientist
All Data International
May 2022 — Oct 2025
  • Defined client data problems from a business perspective for 2 major use cases annually, ensuring clear project scope and measurable objectives
  • Delivered data-driven solutions tailored to client needs, supporting 2 end-to-end analytical projects per year with actionable insights
  • Cleaned datasets and performed ETL processes across multiple data sources, improving data quality and readiness by 20–30%
  • Developed algorithms and models aligned with project scope, producing 2 production-ready models annually that enhanced business decision-making
Learning Content Developer
MatchUp Skills  ·  Freelance
Apr 2025 — Oct 2025
  • Developed e-learning materials focused on Data Science and Artificial Intelligence, including videos and structured syllabuses designed to be easily understood by learners
Assistant Tutor — Data Science
Rakamin Academy  ·  Part-time · Remote
Sep 2023 — Feb 2024
  • Facilitated learning sessions for a class of 40 students in the Data Science Bootcamp
  • Explained key concepts in data science, including statistics, Python programming, machine learning, and more
  • Assisted students with assignments, research, and final projects
  • Evaluated and provided feedback on student submissions and performance
02 —

Skills

Languages
Python C SQL MATLAB
Databases & BI
PostgreSQL DBeaver Tableau Looker
Platforms & Tools
Dataiku Docker n8n Streamlit GitHub GitLab Sourcetree
AI / ML
Machine Learning Deep Learning RAG Systems LLM Integration Gemini API LangGraph LangChain MLflow
Languages
Bahasa Indonesia English
03 —

Projects

* Click "Impact" on select projects to see the business value delivered to clients.




01
Dashboard Balanced Scorecard
Designed data pipelines and built dashboards for KPI tracking and employee performance metrics, supporting data-driven decision-making across the organization.
Data Scientist Python SQL Tableau PostgreSQL
02
Optimization Scheduler
Developed and implemented scheduling algorithms for the energy industry, with a focus on renewable energy resource optimization.
Data Scientist Python MATLAB
03
Dashboard 360
Internal product involving end to end ETL processes to create comprehensive business dashboards with unified data views across departments.
Data Scientist Python PostgreSQL Looker DBeaver
  • Helped team leaders manage and oversee team operations more effectively through a unified data view
  • Enabled visibility into individual employee productivity, supporting more objective performance evaluations
  • Visual dashboards surfaced actionable insights to guide decisions that improved overall employee productivity
04
GenAI Internal Product
Developed AI-powered solutions to assist internal teams with various tasks, integrating generative AI capabilities into existing business workflows.
Data Scientist AI Engineer Python Gemini API n8n Streamlit
05
Anti-Fraud Prediction
Cleaned financial data and developed machine learning algorithms to detect and predict fraudulent activity, improving transaction security.
Data Scientist Python scikit-learn SQL Dataiku
  • Improved the existing rule-based fraud detection system with a more adaptive ML approach
  • Boosted model accuracy from 10% to 88%, drastically reducing undetected fraudulent transactions
06
ChatBot AI — Marketing
Built an AI-powered product for the marketing team covering KOL placement recommendations and campaign strategy suggestions.
Data Scientist AI Engineer Python Gemini API RAG Streamlit
  • Reduced time spent by the marketing team on evaluating key performance metrics
  • AI-powered recommendations surfaced trending content ideas, enabling faster and more informed campaign decisions
  • Cut time-per-content and time-per-account workflows, improving overall team efficiency
Crawling Coupang
07
Korean Product Crawling & Viz
Scraped product data from Coupang and OliveYoung and built visual analytics to surface trending products and market insights. Integrated an AI component to automatically summarize customer reviews, extracting key sentiment and product feedback at scale.
Data Scientist AI Engineer Python BeautifulSoup Tableau Data Crawling Data Wrangling Data Visualization
08
Credit Scoring
Prepared and processed financial datasets and designed machine learning algorithms to evaluate and predict credit risk for lending decisions.
Data Scientist Python scikit-learn SQL PostgreSQL
GitHub
09
Recommendation System
Self-initiated project to design and implement recommendation algorithms, exploring collaborative and content-based filtering approaches.
Data Scientist Python scikit-learn Pandas
GitHub
10
Legal-AI
AI-powered legal document analysis application featuring two core components: an NDA Risk Analyzer and a Legal Chatbot. Built with Go for the web frontend and Python for the AI backend.
Data Scientist AI Engineer Python Golang Gemini API RAG FastAPI Streamlit
  • Enabled legal teams to evaluate NDAs faster by delivering automated clause-level risk scores (High/Low) mapped to applicable Indonesian regulations — eliminating the need for full manual review
  • Replaced clause-by-clause manual reading with structured AI-generated summaries and detailed clause breakdowns, helping both legal and non-legal stakeholders understand contract risks clearly
  • Legal Chatbot feature allowed users to ask follow-up questions on specific clauses, surfacing relevant legal context on demand
11
To-Do List Web App
A web-based to-do list application with a built in mood tracker and productivity insights, built with HTML, CSS, and JavaScript, zero frameworks or dependencies.
Data Scientist HTML CSS JavaScript Canvas Netlify
12
PDF Data Crawling AMF
Extracted financial data from info-financiere.gouv.fr, applied data transformation pipelines, and exported the results as CSV — with support for daily automated ingestion or targeted date-specific extraction.
Data Scientist Python BeautifulSoup Pandas Google Sheets Data Entry Data Crawling Data Wrangling
GitHub
13
Face Recognition Attendance
A CNN-based face recognition system for employee attendance that automatically identifies individuals from photos and records attendance via REST API.
Data Scientist Python TensorFlow scikit-learn SQLite Flask Seaborn Computer Vision
14
News Sentiment Classifier
Built an automated pipeline using n8n to analyze and classify incoming news articles by category and sentiment, powered by Gemini API for natural language understanding.
Data Scientist AI Engineer Python n8n Gemini API NLP Sentiment Analysis Text Classification

Fajri Octadiansyah Umar

Data Scientist & AI Engineer
Bekasi, Indonesia  |  Dian_zexion@yahoo.co.id  |  +6285946055386  |  linkedin.com/in/fajriocta  |  github.com/Fajriocta

Profile

Data Scientist with over three years of experience developing machine learning models, building data pipelines, and delivering data-driven insights. Master's graduate in Mechanical Engineering from University of Indonesia with strong analytical and problem-solving foundations. Proficient in Python, SQL, MATLAB, PostgreSQL, Dataiku, Tableau, Looker, and various AI/ML frameworks, continuously expanding expertise to contribute to scalable and impactful data solutions.

Education

Master's Degree in Mechanical Engineering, University of Indonesia 2019 – 2021

Working Experiences

Data Scientist Supervisor, Pyridam Farma
October, 2025 – Present
Data Scientist, All Data International
May, 2022 – October, 2025
Learning Content Developer, MatchUp Skills  ·  Freelance
April, 2025 – October, 2025
Assistant Tutor – Data Science, Rakamin Academy  ·  Part-time · Remote
September, 2023 – February, 2024

Skills

Languages: Python, C, SQL, MATLAB

Databases & BI: PostgreSQL, DBeaver, Tableau, Looker

Platforms & Tools: Dataiku, Docker, n8n, Streamlit

AI / ML: Machine Learning, Deep Learning, RAG Systems, LLM Integration, Gemini API, MLflow

Human Languages: Bahasa Indonesia (Native), English (Professional Working Proficiency)

Projects

Dashboard Balanced Scorecard
Designed data pipelines and built dashboards for KPI tracking and employee performance metrics, supporting data-driven decision-making across the organization.
Optimization Scheduler
Developed and implemented scheduling algorithms for the energy industry, with a focus on renewable energy resource optimization.
Dashboard 360
Internal product involving end-to-end ETL processes to create comprehensive business dashboards with unified data views across departments.
GenAI Internal Product
Developed AI-powered solutions to assist internal teams with various tasks, integrating generative AI capabilities into existing business workflows.
Anti-Fraud Prediction
Cleaned financial data and developed machine learning algorithms to detect and predict fraudulent activity, improving transaction security.
ChatBot AI — Marketing
Built an AI-powered product for the marketing team covering KOL placement recommendations and campaign strategy suggestions.
Korean Product Crawling & Viz
Scraped product data from Coupang and OliveYoung and built visual analytics to surface trending products and market insights.
Credit Scoring
Prepared and processed financial datasets and designed machine learning algorithms to evaluate and predict credit risk for lending decisions.
Recommendation System
Self-initiated project to design and implement recommendation algorithms, exploring collaborative and content-based filtering approaches.
To-Do List Web App
A web-based to-do list application with a built-in mood tracker and productivity insights — built with pure HTML, CSS, and JavaScript, zero frameworks or dependencies.
Legal-AI
Built an AI-powered tool to assist in analyzing Non-Disclosure Agreements (NDAs) submitted by users, based on Indonesian law — including clause-level risk scoring (High/Low Risk) and references to applicable Indonesian legal regulations.
PDF Data Crawling AMF
Extracted financial data from info-financiere.gouv.fr, applied data transformation pipelines, and exported the results as CSV — with support for daily automated ingestion or targeted date-specific extraction.
Face Recognition Attendance
A CNN-based face recognition system for employee attendance that automatically identifies individuals from photos and records attendance via REST API.

Certifications

MLOps Practitioner
Dataiku
October, 2023
Advanced Designer
Dataiku
October, 2023
Developer Dataiku
Dataiku
October, 2023
ML Practitioner
Dataiku
October, 2023
Core Designer
Dataiku
October, 2023
Python Dev
Kaggle
November, 2023