Hiring the wrong WordPress developer costs more than the project fee — it costs you months of delays, a site that breaks on every update, and a codebase nobody else can maintain. The difference between a good hire and a bad one usually comes down to the questions you ask before signing a contract. Here are the 9 questions that separate competent WordPress developers from the ones who will cost you twice: once to build it, and again to fix it.
Why These Questions Matter
WordPress is easy to start with and hard to build well. That low barrier to entry means the market is flooded with developers who can install a theme and configure plugins but can't write custom code, handle security, or build for performance. The questions below test for the skills that matter after launch — when updates break things, traffic spikes, or a security vulnerability is disclosed. For a detailed cost breakdown by project type, see our guide on how much custom WordPress development costs in 2026.
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9 Questions to Ask Before Hiring a WordPress Developer
1. Do You Build Custom Themes or Customize Existing Ones?
This is the most important question because it reveals their actual skill level. A developer who only customizes pre-built themes (Astra, Divi, Avada) using page builders is a different hire from one who codes custom themes from scratch. Neither is inherently wrong — but the project requirements should dictate the approach, and you need to know which one you're getting. If your project needs a unique design converted from Figma or XD, you need a developer who can write theme code, not one who drags widgets. Ask to see examples of both.
2. Can I See a Live Site You Built — Not Just a Screenshot?
Screenshots hide problems. A live site reveals everything: how fast it actually loads (test it in PageSpeed Insights while you're talking), whether it's responsive on mobile, how the navigation works in practice, and whether the code is clean under the hood. Open the browser inspector and look at the source — is it clean semantic HTML or a wall of bloated page-builder divs? A confident developer will share live URLs without hesitation.
3. How Do You Handle WordPress Security?
If the answer is "I install Wordfence" and nothing else, that's a red flag. Security is layered: it includes security headers, login protection, file permissions, and monitoring. A good developer should be able to explain their hardening process without prompting. Ask specifically about brute-force protection, wp-config.php security, and what happens if a vulnerability is discovered in a plugin they installed.
4. What's Your Approach to Site Speed and Core Web Vitals?
Speed isn't something you bolt on after launch — it's an architectural decision made during development. Ask how they handle image optimization (do they use WebP?), render-blocking scripts (do they defer or async?), and caching strategy. A developer who can name LCP, INP, and CLS and explain how they optimize for each is someone who builds for performance, not someone who installs a caching plugin and hopes for the best. See how we approach this in our WordPress speed optimization services.
5. Do You Follow WordPress Coding Standards?
WordPress has official coding standards for PHP, HTML, CSS, and JavaScript. Following them means the code is readable, maintainable, and compatible with future WordPress updates. A developer who doesn't follow standards is building technical debt into your site — the kind that surfaces six months later when a core update breaks everything and nobody can figure out why.