All 5 recommendations
Est. prices as of Mar 12, 2026
#1 · Custom Build · Best Value
Full-Stack SaaS Application
Free (your time)
A real subscription product with auth, payments, and a live user base
- ✓ Demonstrates full deployment pipeline and DevOps thinking
- ✓ Shows you can handle user management, billing, and scaling concerns
- ✓ Proof you can take a project from ideation to production with real users
- ✗ Takes 3-6 months to build properly and find users
- ✗ Requires learning multiple technologies (backend, frontend, database, payment APIs)
#2 · Established Projects · Hidden Gem
Open Source Contribution with Real Impact
Free
Meaningful PRs to well-known libraries with 100+ stars
- ✓ Proves you can read unfamiliar codebases and navigate existing architecture
- ✓ Shows collaboration skills and ability to incorporate feedback
- ✓ Recruiters recognize legitimate open source work immediately
- ✗ Harder to find good first issues than it appears
- ✗ Requires understanding someone else's coding standards and testing requirements
#3 · Custom Build · Crowd Favorite
Data Visualization/Analysis Dashboard
Free
Interactive tool that answers a real data question with beautiful UI
- ✓ Instantly impressive visually (recruiters are humans too)
- ✓ Showcases both technical skills and design thinking
- ✓ Easy to demo live and explain your reasoning in interviews
- ✗ Can feel like a 'template project' if not unique enough
- ✗ Data sourcing and cleaning is tedious and less visible to recruiters
#4 · Custom Build
CLI Tool or Developer Utility
Free
A tool other developers actually use and install via npm/pip/cargo
- ✓ Forces you to think about UX and documentation deeply
- ✓ Download stats prove real-world utility beyond your portfolio
- ✓ Excellent opportunity to showcase testing and error handling
- ✗ Niche audience—fewer people will discover or recognize the work
- ✗ Documentation quality becomes equally important as code quality
#5 · Custom Build
Machine Learning Model Deployment
Free
A trained model with an API endpoint solving a prediction problem
- ✓ Separates you from 90% of web developers in certain markets
- ✓ Shows end-to-end data science thinking from problem to production
- ✓ Increasingly valuable for companies doing ML-adjacent work
- ✗ Recruiters outside ML/AI companies often don't understand the work
- ✗ Data sourcing and model training can take months with unclear learning outcomes