Alex Chen · Data Analyst · Sydney
Data Analyst · Sydney, Australia

Turning data into
decisions that matter

I help Australian businesses extract meaningful insight from complex data — with 6 years across retail, finance, and healthcare.

6+Years experience
24Projects delivered
AUPermanent resident
Available for Full-time or Contract

Tools I work with

A hands-on toolkit built across 6 years of real-world data work in the Australian market.

Data & Databases

SQLPostgreSQLBigQuerySnowflakedbt

Programming

PythonpandasNumPyscikit-learnR

Visualisation

Power BITableauLookerMatplotlibPlotly

Cloud & Platforms

AzureAWSDatabricksAirflowdbt Cloud

Analytics & Stats

A/B testingRegressionForecastingCohort analysis

Workflow & Collaboration

Git / GitHubJiraConfluenceNotion

Work that delivered results

Real case studies from Australian businesses — each showing the problem, approach, and measurable outcome.

01

Retail Sales Forecasting Model — Woolworths Group

Built a weekly demand forecasting pipeline using Python and BigQuery, replacing a manual spreadsheet process across 450 stores nationwide.

PythonBigQueryForecastingRetail
23%reduction in overstock
costs per quarter
View on GitHub →
02

Customer Churn Dashboard — Telco Sector

Designed an end-to-end churn analysis pipeline and Power BI dashboard for a mid-sized Australian telco, enabling weekly executive reporting.

Power BISQLChurn analysisTelco
4hrssaved per analyst per week
in manual reporting
View case study →
03

Medicare Claims Analysis — Public Health

Explored patterns in public Medicare data (ABS dataset) to surface trends in GP access across NSW LGAs. Presented to a state health advisory panel.

PythonABS dataTableauHealthcare
12LGAs identified as
underprovided
View notebook →
04

ASX Sentiment vs Price Correlation

Personal project: scraped financial news headlines and correlated sentiment scores against ASX 200 daily movements using NLP and pandas.

NLPWeb scrapingpandasFinance
0.71correlation found between
sentiment and next-day moves
View on GitHub →

Experience

Across retail, finance, and healthcare — always focused on insight that drives action.

2022 – Present
Current

Senior Data Analyst

Quantium · Sydney, NSW

Lead analyst on the retail analytics practice, delivering forecasting, segmentation, and campaign measurement solutions for major FMCG clients including Woolworths Group.

PythonBigQuerydbtTableau
2020 – 2022

Data Analyst

Commonwealth Bank of Australia · Sydney, NSW

Delivered credit risk dashboards and customer behaviour analysis across the retail banking division. Automated monthly reporting, saving 12 hours/month across the team.

SQLPower BIPythonExcel
2018 – 2020

Junior Data Analyst

NSW Health · Parramatta, NSW

Supported the analytics team in producing epidemiological reports and building dashboards for hospital performance monitoring across Western Sydney LHD.

RTableauSQLABS data

Education & certifications

Formal education backed by industry certifications relevant to the Australian market.

BSc

Bachelor of Data Science

University of Sydney · 2018

MS

Microsoft PL-300 Power BI

Microsoft · 2023

GC

Google Data Analytics Certificate

Google · Coursera · 2021

dbt

dbt Analytics Engineering

dbt Labs · 2022

Testimonials

Feedback from people I've worked alongside at Australian organisations.

"

Alex has a rare ability to translate complex data findings into clear recommendations the business can act on. Their forecasting work saved our planning team weeks of effort each quarter.

S
Sarah Mitchell
Analytics Lead · Quantium
"

One of the most commercially minded analysts I've worked with. Alex built our entire credit risk dashboard from scratch and made it so intuitive that non-technical stakeholders use it daily.

J
James Okafor
Head of Data · Commonwealth Bank

Let's work together

Available for roles from July 2025

Open to full-time roles and contract engagements across Sydney, Melbourne, or remote. Particularly interested in retail, finance, and healthcare analytics.

Australian market details

LocationSydney, NSW 2000
Work rightsPermanent Resident ✓
TimezoneAEST (UTC+10)
Open to relocationSydney · Melbourne · Remote
ABNAvailable for contracts ✓
Notice period4 weeks