What Actually Matters in a Developer Portfolio
What hiring managers really look at — spoiler: it's not fancy design
A Pretty Site Doesn't Get You Hired
I've seen a lot of people spend two weeks on their portfolio site design. Scroll animations, particle effects, 3D model rotations. They look cool, but I need to say this:
Hiring managers rarely spend more than 30 seconds on a portfolio. When screening 100 resumes, spending 5 minutes per person is generous. If they can't find the key information in 5 seconds, they move on.
(I once spent two weeks building a flashy portfolio site myself. In hindsight, I should've used that time writing better project descriptions.)
What Needs to Show Up in the First 5 Seconds
Three things. What you can do, what projects you've worked on, and how to reach you. These three should be immediately visible on the landing page. If someone has to scroll three times to see your projects and click twice for details, you've already lost half your audience.
Put Numbers in Your Project Descriptions
Instead of "Built an e-commerce site with React," try "Reduced initial page load from 3.2 seconds to 0.8 seconds using ISR and image lazy loading." Completely different impression.
Achievements without numbers are just personal essays. Lighthouse scores, bundle sizes, API response times. Measure them while you're working on the project. I'm not saying make up numbers — the habit of measuring itself is a sign of a good developer.
GitHub Says More Than You Think
When I look at an applicant's GitHub, here's what I check. Are the commit messages meaningful? The difference between "feat: add login functionality" and "asdf" is night and day. Is the code structure consistent? Do they use issues and PRs?
If someone creates issues and merges via PRs even in solo projects, that signals they're ready for teamwork. Though this varies by person — it's just what I look for.
A Blog Is a Bonus
You don't need to write weekly. Just 2-3 troubleshooting writeups from your projects is enough. Something like "How I Fixed a Memory Leak During Infinite Scroll Implementation in React" shows that you're someone who documents and organizes problems.
If It Breaks on Mobile, Game Over
A frontend portfolio that breaks on mobile has zero credibility. Hiring managers might be looking at it on their phone during the subway commute. A surprising number of portfolios aren't mobile-responsive.
Just Ship It and Start
So many people never publish their portfolio because they're chasing perfection. "Just need to polish the design a bit more," "one more project" — and two months pass with nothing public. Start simple with Notion or GitHub Pages, then update it as new projects come along. That's realistic.
A portfolio has exactly one purpose: getting you an interview. Clarity, not flashiness, is the weapon.