Alyssa Tramnia

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scroll down and see what I mean

My Works

Where I keep my curiosity

E-commerce Reviews – What frustrates customers most?
Customer

E-commerce Reviews – What frustrates customers most?

I read 36K+ e-commerce reviews so nobody else has to. The result is an interactive map of where customers get frustrated, and what to fix first.

pythonpython
streamlitstreamlit
PandasPandas
AdventureWorks Production – Where is inventory getting stuck?
BI & Dashboards

AdventureWorks Production – Where is inventory getting stuck?

A Power BI walk-through of AdventureWorks' production floor: 4.5M units, seven assembly stages, and an on-time rate of only 41.6%. Where does the time go?

PowerBIPowerBI
powerquerypowerquery
Global Store Performance – Which markets actually make money?
BI & Dashboards

Global Store Performance – Which markets actually make money?

An executive dashboard for a retailer in seven markets. Sales grew 51.5%, but the repurchase rate fell, and the biggest market was not the most profitable.

PowerBIPowerBI
Furniture Store Performance – Which branch performs best, and why?
BI & Dashboards

Furniture Store Performance – Which branch performs best, and why?

Three branches, 18 monthly Excel files, one answer: the revenue gap comes from footfall, not from what people buy. Weekends bring in 46% of revenue.

PowerBIPowerBI
excelexcel
pythonpython
IMDB Top 1000 – What makes a movie successful?
Markets

IMDB Top 1000 – What makes a movie successful?

I mined the IMDB Top 1000 with association rules to find the cast pairings and success-tier combinations that keep showing up in films people love, and benchmarked Apriori against PCY hashing.

pythonpython
PandasPandas
numpynumpy
Insurance Risk Scoring – Which approvals can we trust?
Risk & Credit

Insurance Risk Scoring – Which approvals can we trust?

A risk model that explains itself: 57K insurance records, a severe class imbalance, and a logistic regression you could defend in a meeting.

pythonpython
scikit-learnscikit-learn
PandasPandas
Weather Shocks & Online Demand – Does heavy rain stop people shopping?
Operations

Weather Shocks & Online Demand – Does heavy rain stop people shopping?

My master's thesis: a city-day panel of Brazilian e-commerce orders matched to daily weather. A heavy-rain day cuts orders per capita by about 9%.

RR

My Skills

The tools I reach for most

BI & Visualization

PowerBI
Tableau
Looker
streamlit
excel
powerquery

Warehouse & Cloud

Google Bigquery
Alibaba Cloud
Google Cloud
PostgreSQL
Microsoft SQL Server
Github

Programming & Data

python
R
Pandas
numpy
scikit-learn

Enterprise & AI tools

Salesforce
Claude
openai

Timeline

A quick recap of my journey

Sep 2025

MSc Data Science in Economics & Health - University of Milan

Second year of my dual-degree master's · Università degli Studi di Milano Statale · GPA 27/30

PythonPythonRRscikit-learnscikit-learn
Milan, Italy
MSc Data Science in Economics & Health - University of Milan
Oct 2024

MSc Data Science & Business Analytics - University of Warsaw

First year of my dual-degree master's · Uniwersytet Warszawski · GPA 4.5/5

PythonPythonRRSQLSQL
Warsaw, Poland
MSc Data Science & Business Analytics - University of Warsaw
Mar 2024

Senior Data & Insights Analyst - Vero ASEAN

Social listening pipelines, KOL scoring and brand reputation dashboards for a top-100 PR agency

PythonPythonGoogle CloudGoogle CloudBigQueryBigQueryPower BIPower BITableauTableauLooker StudioLooker Studio
Ho Chi Minh City
Senior Data & Insights Analyst - Vero ASEAN
Oct 2023

Data Analyst, Regional Customer Experience - Lazada Group

Regional customer experience for 65M+ users; one source of truth behind 60+ dashboards

SQLSQLPythonPythonPandasPandasMaxComputeMaxComputePower BIPower BI
Ho Chi Minh City
Data Analyst, Regional Customer Experience - Lazada Group
Aug 2022

Customer Experience Analyst - Lazada Group

Mapped customer journeys and turned friction into product fixes; 4x checkout rate, 15% fewer cancellations

SQLSQLMaxComputeMaxComputePower BIPower BIExcelExcel
Ho Chi Minh City
Customer Experience Analyst - Lazada Group
Oct 2020

Vendor Performance Supervisor - Lazada Group

Forecasting, SLA dashboards and smarter chatbot routing for the customer-care vendors

Power QueryPower QueryExcelExcelPower BIPower BI
Ho Chi Minh City
Vendor Performance Supervisor - Lazada Group
Jun 2018

Project Quality Lead - Accenture Operations

Led a 12-person team across APAC and EMEA on data-driven quality

SalesforceSalesforceExcelExcel
Kuala Lumpur, Malaysia
Project Quality Lead - Accenture Operations
Sep 2011

BA English for Finance & Banking - Banking Academy of Vietnam

Where it all started · 2011-2015

Hanoi
BA English for Finance & Banking - Banking Academy of Vietnam

Interested in collaboration?