By 
Quick answer: How do I build a portfolio?
- One project per certification — apply the skills to a real problem.
- Case study — problem → approach → result.
- Host free — GitHub Pages, Notion, Behance.
- Link it — resume, LinkedIn Featured.
- Quality — three strong projects.
Key takeaways
- Every certification should produce one visible project.
- Write projects as short case studies with results.
- Free hosting: GitHub Pages, Notion, Behance, Google Sites.
- Data analysts: 2–3 dashboards on public datasets.
- Link the portfolio from your resume, LinkedIn Featured section and email signature.
Portfolio project ideas by certification
| Certification | Portfolio project |
|---|---|
| Google Data Analytics / PL-300 | Dashboard on a public dataset with insights |
| AWS / Azure | Deployed web app with architecture diagram and cost notes |
| Security+ | Home lab write-up: hardening, logging, incident simulation |
| UX certifications | Redesign of a real sign-up flow with before/after |
| Google Ads / HubSpot | Campaign plan and results for a small business or charity |
| PMP / Scrum | Project plan, risk register and retrospective from a real project |
| Prompt Engineer (SOA) | Prompt library with test cases and measured outputs |
Portfolio projects for data analysts
- Cleaning + SQL: a messy public dataset cleaned and queried, with notes.
- Dashboard: Power BI or Tableau dashboard answering a business question.
- Analysis: a short report with a recommendation and its estimated impact.
How to build a free portfolio website
- GitHub Pages: free hosting for developers, from a repository1.
- Notion: publish a page as a simple portfolio.
- Behance / Dribbble: designers.
- Google Sites, Carrd: quick no-code options.
How to write a portfolio case study
- Problem: one sentence on what needed solving.
- Your role and tools.
- Approach: 3–5 key steps with visuals.
- Result: a number, a decision, or feedback.
- What you'd do next.
Prove it free: the tests that match this guide
Pair your portfolio with a verifiable certification in the same skill. (Disclosure: Science of Apps publishes these tests.)
- UX Design CertificationUX portfolio + SOA UX Design certification.Start free test →
- Google Data Analytics Certificate Practice TestData portfolio + analytics practice.Start free test →
- Full-Stack Web Development CertificationWeb projects + full-stack certification.Start free test →
- Graphic Design TestDesign portfolio + graphic design test.Start free test →
Building a freelance portfolio
No clients yet? Do one project for a friend's business or a charity, or redesign a public product and label it as a concept. Add credentials alongside: free, verifiable Science of Apps certifications with credential IDs give clients quick proof of skills.
Where to share your portfolio
Link it in your resume header, LinkedIn's Featured section and your freelancing profiles. Post a short write-up of each project on LinkedIn.
Frequently asked questions
How do I build a portfolio?
Turn each certification into a real project, write it up as a short case study, host it free on GitHub Pages, Notion or Behance, and link it from your resume and LinkedIn.
What portfolio projects should a data analyst do?
A cleaned dataset with SQL queries, a Power BI or Tableau dashboard, and a short analysis report with a recommendation.
How do I build a free portfolio website?
Use GitHub Pages, Notion, Google Sites, Carrd or Behance, depending on your field.
How many projects should a portfolio have?
Three strong, well-documented projects are better than many weak ones.
How do you build a freelance portfolio?
No clients yet? Do one project for a friend's business or a charity, or redesign a public product and label it as a concept. Add credentials alongside: free, verifiable Science of Apps certifications with credential IDs give clients quick proof of skills.
Sources
- GitHub Pages
- Behance
- Notion: publish to the web
- Science of Apps: free online certifications
- Checked November 11, 2026. Figures that change — fees, salaries, prices — are reviewed every six months; if something is out of date, tell us.
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