Tableau portfolio projects
A certificate says you covered a syllabus. A portfolio says you can do the work. Here is what to build, where to put it, and what hiring managers actually open.
What hiring managers actually look at
They open one or two dashboards, for well under a minute each, and they are looking for a small number of things. Can you choose a chart that answers a question rather than decorating one. Is the dashboard readable without you standing next to it explaining. Did you handle the awkward parts of the data or quietly avoid them.
They are not counting how many vizzes you have published, and they are not impressed by novelty chart types. A portfolio of four considered dashboards beats twenty rushed ones, every time.
- A clear question the dashboard answers, stated on the dashboard itself.
- Sensible chart choices, which usually means fewer and plainer than beginners expect.
- Evidence you shaped the data rather than using it exactly as downloaded.
- A short written note on what you found and what you would do next.
Five projects worth building
Pick projects where the data is genuinely messy and the question is genuinely open. Clean, pre-aggregated data sets produce dashboards that all look the same, and interviewers have seen the Superstore sample data more times than you can imagine.
- A regulator or government data set on a subject you actually care about. Open data is messy in interesting ways, and caring about the subject shows in the writing.
- Your own domain's data. If you work in logistics, build a logistics dashboard. Domain knowledge is the thing you have that other candidates do not, and it makes the analysis sharper.
- A rebuild of a bad published chart. Show the original, show yours, and explain the reasoning. This is exactly the Makeover Monday format and it demonstrates critical judgement rather than just execution.
- A dashboard with a genuine time dimension. Cohorts, retention or point-in-time reporting force you into level of detail expressions and table calculations, which is precisely what an interviewer will probe.
- One deliberately small, fast dashboard. A single question, answered well, loading instantly. Restraint is a skill and very few portfolios demonstrate it.
Where to publish
Tableau Public is the answer, and it is free. It gives you a shareable link, an interactive dashboard rather than a screenshot, and a profile page that works as the portfolio itself. Put that profile link on your CV and your LinkedIn.
The one thing to understand before you start: Tableau Public publishes everything you save. Never use real employer data, real customer data or anything confidential. Use open data, published data or synthetic data.
What makes a portfolio ignorable
Most weak portfolios fail in the same few ways, and all of them are avoidable in an afternoon.
- Superstore data. Every course uses it. Using it in a portfolio signals you did the tutorial and stopped.
- Dashboards with no stated question. If the viewer has to guess what they are looking at, they will not guess.
- Every chart type at once. A dashboard is not a showcase of what you can build, it is an answer.
- No writing at all. A viz with no commentary is a tool demonstration, not an analysis.
- Slow workbooks. If it takes fifteen seconds to load, the interviewer has already moved on, and slowness signals you have not learned performance basics.
Where to learn it
Three routes that build a portfolio for you
Two of these are free weekly community projects rather than courses, and they are the most reliable portfolio-building mechanism in the Tableau world.
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Our pickMakeover Monday
Community project · Weekly challenge
A data set and an existing chart are published each week. You rebuild the chart better. Started by Andy Kriebel and Eva Murray, and it is the single most reliable way to build a public portfolio.
Best for Turning knowledge into a body of work a hiring manager can actually look at.Watch out No curriculum and no feedback unless you ask for it. You have to be honest with yourself about what you avoided. -
Workout Wednesday
Community project · Weekly challenge
The technical sibling of Makeover Monday. You are given a finished visualisation and asked to reproduce it exactly, which forces you into the features you have been quietly avoiding.
Best for Finding the specific gaps in your Tableau knowledge, fast and uncomfortably.Watch out Genuinely hard. Attempting these before you are comfortable with table calculations is demoralising. -
Data Visualization with Tableau Public
Coursera · Single course
Focused on the free Tableau Public edition, which matters if you do not have a Desktop licence. Strong on the design and storytelling side rather than the mechanics.
Best for Learning without a paid Tableau licence, and improving how your charts read.Watch out Tableau Public cannot connect to most enterprise data sources and saves work publicly.
Tableau portfolio questions
How many projects should a Tableau portfolio have?
Four to six considered dashboards is enough, and more is usually worse. Hiring managers open one or two before forming a view, so the weakest item in your portfolio does more damage than the strongest does good.
Prune deliberately. If you built something six months ago that you would now do differently, either rebuild it or remove it. A portfolio is a claim about your current standard, not an archive of everything you have ever made.
Where do I get data for a Tableau portfolio?
Government and regulator open data portals, Makeover Monday's weekly data set, data.world, and Kaggle. Prefer sources where the data is messy and the subject is one you can write about with some interest.
Avoid the Superstore sample data that ships with Tableau. Every course uses it, so an interviewer has seen dozens of Superstore dashboards and it signals that you completed a tutorial rather than did an analysis. Never use real employer or customer data, because Tableau Public makes everything you save publicly visible.
Is Tableau Public good enough for a portfolio?
Yes. Tableau Public is the standard place to host a Tableau portfolio, it is free, and it gives interviewers a live interactive dashboard rather than a screenshot.
Its limits matter for work rather than for a portfolio: it cannot connect to most enterprise data sources, and it publishes everything you save. For demonstrating your skills on open data, those constraints do not bite.
Do I need a portfolio if I have a Tableau certification?
Yes, and if you can only do one, do the portfolio. A certification proves you covered a syllabus. A portfolio proves you can do the work, and interviewers ask what you have built.
The strongest combination is both: the Tableau Desktop Specialist, which is around $100 and does not expire, plus four to six published dashboards. The certificate proves coverage and the portfolio proves capability. Our certification guide covers which exam to sit and when.