Work Experience
PT Dinamaritama Konsultan Rekayasa
Bandung, ID
- Performed statistical modeling and long-term forecasting of wave, current, and geotechnical data across 20+ government infrastructure projects.
- Conducted probabilistic analysis for 100-year return periods to ensure structural resilience of docks, breakwaters, and reclamation zones.
- Calculated forces and mechanical stress responses on maritime structures using engineering mechanics and environmental load criteria, supporting design recommendations for coastal and offshore infrastructure.
Katalis Insight & Naan Consultancy (Agency)
Remote, ID
Executed and analyzed performance marketing campaigns for brands such Cleya Beauty, Celcius IDN, Joey & Mom, Menoplus, Polkstreet, Kasmaran Beauty, 11th Space, J. Arthur Pvt Ltd, Hustlers Only Malaysia, Marvel Aircon, TitiDika, Jakarta Private Tutors.
- Led omnichannel campaigns for 10+ brands, achieving 5–10× ROAS via optimized Meta Ads, Shopee CPAS, Tokopedia CPAS, SEO, and CRM.
- Developed BI dashboards (Tableau, Power BI, Looker Studio) to track ROAS, CTR, CAC, and conversion metrics in real-time.
- Conducted funnel and cohort analysis to improve CRM flows and retention.
- Ran A/B testing and visualized outcomes to refine creatives and reduce CPA.
- Analyzed sentiment and sales data to support product innovation and targeting.Delivered monthly BI reports with strategic marketing insights to stakeholders
Sony Music Entertainment Indonesia
Released 136 songs annually for 29 Sony artists, analyzed music trends via dashboards, and guided curation, collaborations, and artist development.
Believe
Successfully acquired Javanese Pop and hyperlocal artists, utilizing sales and marketing analytics with dashboard data for revenue projections, contract management, and A&R strategies.
Project Based Internship
Virtual Internship Experience
IDX Partners
Project Based Internship
Achieved an average score of 83.47 (Excellent) by applying Data Warehouse Scheduling, SQL Operations, and OLAP Data Modeling using MSSQL and Talend.
Kimia Farma
Developed sales performance and Customer Lifetime Value (CLV) dashboards using SQL, Google BigQuery, and Looker Studio, achieving an 86.95 (Excellent) score.
Home Credit Indonesia
Organized by Rakamin Academy & Home Credit Indonesia
Score: 86.56 / Grade: Excellent
I successfully completed an intensive 1-month data scientist internship simulation focused on solving real-world business problems faced by Home Credit Indonesia. The program mimicked actual workflows of the Smart Data Analytics and CRM teams, involving collaboration across departments like Product and Marketing.
Key Deliverables:
Conducted exploratory data analysis (EDA) and data preprocessing on credit loan datasets.
Designed and implemented multiple machine learning models including Logistic Regression and Gradient Boosting to predict customer creditworthiness.
Developed an end-to-end modeling pipeline, including feature engineering, hyperparameter tuning, and model evaluation using business-aligned metrics.
Created a 10-slide executive presentation with actionable business recommendations based on predictive insights.
Tools and Technologies: Python, Pandas, Scikit-learn, Matplotlib, Google Colab, GitHub.
Skills Gained:Machine Learning, Business Acumen, Feature Engineering, Credit Risk Modeling, Data Storytelling, Python Programming, SQL, Big Data Fundamentals.
Bank Muamalat Indonesia
Organized by Rakamin Academy & Bank Muamalat Indonesia
Score: 84.34 / Grade: Excellent
I successfully completed a one-month project-based internship simulation as a Business Intelligence Analyst, designed to replicate real-world workflows at Bank Muamalat. The program emphasized full-cycle BI processes, from raw data processing to dashboard development and business insight generation, within the context of digital banking.
Key Deliverables:
Transformed raw user activity data into a dynamic dashboard to monitor engagement and retention metrics.
Conducted data preprocessing and transformation using SQL (Google BigQuery), ensuring data consistency and analysis readiness.
Built a comprehensive Looker Studio dashboard visualizing user activity trends and operational KPIs.
Presented actionable business insights to support digital service optimization strategies.
Tools and Technologies:
Google BigQuery, Looker Studio, SQL, Excel, Google Sheets
Skills Gained:
Business Acumen, Data Visualization, Digital Banking Analytics, SQL Querying, Stakeholder Communication, Insight Presentation, Data Cleaning and Transformation
My Portfolio
Check out 30+ portfolio projects on my Portfolio Page, where each project is discussed in detail. Discover insights into Data Science, Business Intelligence, Data Analytics, and Data Engineering, including methodologies, case studies, and real-world applications.
Unlocking Retail Success with Data Analytics — Insights into Sales Performance and Customer Behavior
Working Process
Check out my GitHub, where I showcase 30+ portfolio projects across Data Engineering, Data Science, Data Analytics, and Business Intelligence, featuring real-world case studies from leading companies.
My projects include ETL/ELT pipelines, machine learning models, churn prediction, business intelligence dashboards, and customer analytics, demonstrating expertise in data transformation and actionable insights.
🔍 All project code, SQL queries, and documentation are available on GitHub for reference and hands-on learning.
What Services I'm Providing
Data Engineering
Hard Skill:
Data Warehousing, Integration, Apache Kafka Streaming, Scripting, Data Pipelines,
Techniques:
Data Scraping, ETL, Data Visualization, Big Data Analytics, Batch Processing, Data
Pipelines for Streaming System, Data Governance.
Tools & Software:
Python, GIT, SQL, Airflow, Hadoop, Cloud, PySpark, Tableau, Google Data Studio.
Data Science
Hard Skills:
Data Science Fundamentals, SQL for Data Science, Python Programming for Data Science, Data Processing & Data Wrangling, Data Visualization, Statistics for Data Science, Machine Learning (Supervised & Unsupervised), Deep Learning Fundamentals, Business Understanding in Data Science.
Techniques:
Exploratory Data Analysis (EDA), Data Cleaning & Processing, Statistical Analysis & Hypothesis Testing, Feature Engineering, Model Evaluation & Hyperparameter Tuning, Predictive Modeling, Supervised & Unsupervised Learning, Deep Learning Basics, Version Control & Collaborative Work (Git).
Tools & Software:
SQL , Python (100.00 Score in Programming, 96.67 in Data Types), Looker Studio, Scikit-Learn & Machine Learning Frameworks, Google Colab & Jupyter Notebook, Matplotlib & Seaborn (for statistical visualization), Git & Version Control
Business Intelligence & Data Analytics
Hard Skills:
Dashboard Development, Data Visualization, Funnel and Cohort Analysis, RFM Segmentation, A/B Testing, Uplift Modeling, Customer Lifetime Value (CLV) Optimization, Marketing Analytics, Data Warehousing & Data Modeling , ETL/ELT Development.
Techniques:
EDA, Segmentation Analysis (Customer & Market), A/B Testing for Decision Optimization, Churn Prediction & Customer Behavior Analysis, Predictive Analytics for Business Growth, Uplift Modeling for Marketing Campaigns, Data Storytelling & Reporting, Workflow Automation with Apache Airflow, Stored Procedures for BI Automation.
Tools & Software:
SQL. Python,
Apache Airflow,
Tableau & Power BI
Google Looker Studio
What My Mentors Says
Hijir Della Wirasti has been one of my mentees during my role as an Assistant Tutor for Data Science. She is a highly talented individual with excellent analytical skills. Her ability to analyze complex data, solve problems, and apply technical expertise in data cleansing, Python programming, and data visualisation is outstanding.
Hijir excels individually and within a team, demonstrating strong leadership qualities, effective collaboration, and a proactive attitude that drives success. I confidently recommend her for any data-related role, as her skills and leadership will be a valuable asset.
Hijir is an exceptional individual with a truly unique background—she holds double bachelor’s degrees in Music Education and Oceanic Engineering 🎼🌊 and also has experience in marketing. This rare mix of skills equips her with a sharp analytical mindset and the versatility to tackle complex problems from multiple angles.
What stands out most is her work ethic. While completing the bootcamp’s demanding final project, she also prepared for her thesis presentation, just days apart—handling both with impressive focus and dedication.
Hijir’s blend of creativity, technical ability, and marketing insight makes her a standout candidate for any team.
Mba della adalah sosok yang sangat passionate terhadap apa yang ia kerjakan, sangat cepat mempelajari hal baru dan mempunyai kemampuan team work yang mumpuni untuk bisa bekerja dalam team dan bahkan memimpin sebuah team.