• Co-taught Algebra I covering linear, quadratic, and exponential functions while integrating data insights into instructional planning. • Analyzed math performance data for 350+ students using Excel to identify trends and subgroup gaps, driving 94% proficiency vs. 54% state average and achieving Level 4 Core & Weighted Performance (Index 193–216) across all subgroups. • Built dashboards and visual reports with Excel VBA and macros + Think-Cell for leadership, tracking 100% assessment participation and subgroup Index gains (ELL 215.4; SWD 193.1)

Samsung | Sep 2023 - Dec 2023

Graduate Consultant (NYU Real World Strategic Partnership)

• Built Excel-based financial models (ROI, NPV, IRR) and conducted customer journey analysis at Samsung’s Manhattan experiential store to identify pain points and retail optimization opportunities. Created digital campaign and CRM strategy. • Identified strategic partnership opportunities and market trends, presenting recommendations to Samsung’s VP and Director; the team placed 2nd overall after the final presentation.

Toyota, Astra International | Jun 2021 - Aug 2022

Strategy Analyst (Marketing & Sales)

• Developed Toyota new business model, a multi-million-dollar flexible car subscription business model, designing end-to-end purchase journeys (mobile app, UI/UX), strategic marketing campaigns, digital paid ads, and promotions. • Power BI analysis on inventory & sales to design monthly sales programs (financing packages, incentives, and salesforce rewards) • Spearheaded a record-breaking virtual YouTube launch, attracting 1.4M viewers and selling 1,158 units in one day; awarded 3rd Place, Astra Corporate Affairs Award 2021.

British American Tobacco | Feb 2020 - May 2021

Marketing Global Graduate

• Led 40+ sales personnel to improve retail performance in Semarang through salesforce monitoring, rerouting, and coaching, achieving +6.5% sales volume and +7.8% daily effective calls in six months. • Coordinated cross-division efforts to launch 6 local brands nationwide, managing multi-million-dollar activities across 93 branches (distribution, POSM, DTC programs, community selling).

Boston Consulting Group | Sep 2019 - Oct 2020

Project Intern

• Conducted primary & secondary market research to define customer characteristics and competitive landscape, informing new product development and launch strategy. • Cleaned and analyzed product performance data, translating insights into monthly client presentation decks & decision making.

My Education

Take a look at my formal education

Master of Science in Integrated Marketing (Marketing Analytics)New York University | 2024

Bachelor of Science in Business Managment (Finance & Marketing)Bandung Institute of Technology | 2019

About Me

Analytics-driven problem solver with experience across strategy, education, and commercial sectors. Skilled in SQL, Python, R, Tableau, SPSS, and advanced excel analytics. NYU M.S. (Marketing Analytics) graduate.

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Khairul Arifin

Data Analyst

New York University | London & New York City

PostgreSQL Summary Stats and Window Functions

Understanding Data Visualization

Joining Data in SQL

PostgreSQL Summary Stats and Window Functions

Global data and strategy analyst with proficiency in SQL, Python, and R, educated in New York City, Paris, and Jakarta.

My Work

Project: Data-Driven Product Management: Conducting a Market Analysis

Project: Investigating Netflix Movies

Project: Exploring Stock Market Trends with Plotly

Project: Building Financial Reports

Project: Analyzing Students' Mental Health

Project: Assessing Customer Churn Using Machine Learning

Project: Uncovering the World's Oldest Businesses

Project: Assessing the Effectiveness of Medical Treatments

Analysis of Factors Affecting Purchase Decision Towards Adidas and Nike Using SPSS and Microsoft Excel Solver

Project: Analyzing Unicorn Companies

Data Visualization with Tableau and Think-Cell - Google Drive

Project: Analyzing Motorcycle Part Sales

Project: Data-Driven Product Management: Conducting a Market Analysis

My Certifications

Data Analyst Associate

Other Certificates

DataCamp Course Completion

Courses

Courses

Tracks

Projects

My Work Experience

Success Academy Charter School New York | Jun 2024 - Present

Data Assessment Associate