Web Developer Job Description Template (2026)

Full JD (copy-ready)

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# Web Developer — Job Description

## Role summary
A Web Developer builds and maintains our marketing site, product pages, and smaller web apps across a range of stacks: HTML/CSS/JS fundamentals, WordPress or Webflow when the job calls for it, React or Next.js for app-like surfaces, and CMS integrations like Sanity, Contentful, or Shopify. They are generalists who care about clean markup, Core Web Vitals, SEO-friendly HTML, forms that actually work, and the long tail of site-builder tasks that specialist engineers tend to avoid.

## Responsibilities
- Build and maintain marketing pages, landing pages, and content-driven sites with semantic HTML, accessible forms, and SEO-friendly markup.
- Integrate headless CMS platforms (Sanity, Contentful, Storyblok, WordPress REST) with a Next.js or Astro frontend, including preview modes and incremental regeneration.
- Hit Core Web Vitals targets per page: LCP under 2.5s, INP under 200ms, CLS under 0.1 — measured in CrUX, not just lab runs.
- Implement JSON-LD schema markup (Organization, Article, FAQPage, BreadcrumbList, Product) so pages render rich results in Google SERPs.
- Build responsive layouts that work on iPhone SE through 1440px desktop without horizontal scroll, layout shift, or broken sticky headers.
- Wire up forms with server-side validation, spam protection (Turnstile, hCaptcha), and reliable delivery to HubSpot, Mailchimp, or a CRM.
- Integrate analytics and conversion tracking (GA4, Plausible, PostHog, GTM) with privacy-respecting consent flows.
- Handle cross-browser and cross-device testing through BrowserStack or real devices; fix the Safari-on-iOS edge cases that break on real users.
- Run Lighthouse and PageSpeed Insights on every release; lazy-load below-the-fold images, serve AVIF/WebP, and purge unused CSS.
- Set up redirects, canonical URLs, sitemap.xml, robots.txt, and the hreflang map for multi-locale sites.
- Maintain legacy pages and CMS content migrations — the unglamorous site-builder work most specialists pass on.

## Must-have skills
- 3+ years shipping production websites — including at least one large marketing or CMS-driven site with real traffic.
- Strong HTML and CSS fundamentals: specificity, the cascade, flex, grid, container queries, logical properties, and responsive typography.
- JavaScript + TypeScript fluency; comfortable in at least one framework (React/Next.js, Astro, or SvelteKit).
- Working knowledge of at least one headless CMS (Sanity, Contentful, Storyblok) or a traditional CMS (WordPress, Shopify) at an integration level.
- Practical SEO literacy: semantic markup, meta tags, Open Graph, JSON-LD, canonical and hreflang, and reading Search Console.
- Core Web Vitals tuning with real tooling (Lighthouse, PageSpeed Insights, CrUX, WebPageTest).
- Comfortable with Git-based PR workflow, Vercel/Netlify deploys, and environment configuration for preview branches.

## Nice-to-have skills
- Webflow, Framer, or no-code platform experience for sites that do not warrant a custom build.
- Shopify theme work (Liquid, Hydrogen) or WooCommerce customization.
- A/B testing platforms (Optimizely, VWO, PostHog experiments) at an implementation level.
- Email templating (MJML) for transactional and marketing emails.
- Basic Node.js or PHP for small serverless handlers, form backends, or WordPress tweaks.
- Design sensibility — able to polish a Figma handoff without always going back to the designer for micro-decisions.

## Tools and technology
- HTML / CSS / TypeScript
- Next.js / Astro
- Sanity / Contentful / WordPress
- Tailwind CSS
- Vercel / Netlify
- GA4 + GTM
- Lighthouse + PageSpeed Insights
- Figma
- Git + GitHub Actions
- BrowserStack

## Reporting structure
Reports to the Head of Marketing, Engineering Lead, or a Technical Project Manager depending on the org. Collaborates daily with designers, content writers, SEO specialists, and marketing ops; lightweight coordination with backend engineers when forms or integrations require it.

## Success metrics (KPIs)
- Core Web Vitals pass rate in CrUX above 90% on top 20 pages.
- Uptime and SSL health on the marketing domain at 99.95% or above.
- Schema markup validated with zero errors in Rich Results Test on shipped pages.
- Lighthouse performance score above 85 on mobile for money pages.
- PR review turnaround under 1 business day on peer PRs.
- Zero regression in indexed pages or rankings attributable to a code change.