Senior developer (Webflow to Builder.io + Next.js Migration) - Part-time - Worldwide

Company

We’re a sports betting analytics platform — think Bloomberg Terminal for sports betting. We provide confidence-scored prediction signals across NFL, NBA, MLB, NHL, college sports, and international soccer. Our app runs on a Laravel/React stack.

The Project

We need to migrate our marketing site off Webflow and onto Builder.io integrated with Next.js. This is an interim architecture — our long-term plan is Astro + Sanity CMS — but we need a fast, SEO-friendly, professional marketing site live as soon as possible that our team and SEO agency can manage without developer involvement.

We have a designer building out pages, and we’ll be providing Figma files along with HTML/CSS references for animations and interactions. This is not a ground-up design project — the visual direction is established. This is a technical buildout and platform configuration.

This starts as a focused project but could transition into an ongoing role as the platform evolves.

Scope of Work

1. Next.js + Builder.io Foundation

• Initialize a Next.js project with Builder.io SDK integration
• Configure deployment on Vercel with custom domain, staging (preview deployments), and production environments
• Implement global site architecture: header, footer, navigation, responsive layouts
• Configure Builder.io workspace with reusable content models, sections, and page templates

2. Page Buildout

• Build all pages in Builder.io from Figma files and HTML/CSS references provided by our designer — this is a fresh buildout, not a content migration from the existing Webflow site
• Implement responsive design across breakpoints (desktop, tablet, mobile)
• Translate animation and interaction references from provided HTML/CSS into the live site
• Configure meta tags, Open Graph data, canonical URLs, and structured data (schema markup) on every page

3. Custom React Components for Builder.io

• Build custom React components that pull live data from our app API — examples include live signal previews, game slates, confidence tier displays, active pick counts
• Register these components as drag-and-drop blocks within the Builder.io visual editor so non-technical team members can place and configure them on any page
• Ensure components handle loading states, error states, and empty states gracefully

4. Integrations

• Stripe: Build out checkout flows and payment links, ensure all transactions are properly tracked and attributed
• AWeber: Email capture forms integrated with our existing AWeber lists
• Analytics: Google Analytics 4, Google Tag Manager, and Meta Pixel implementation with proper event tracking
• Google Search Console: Sitemap submission, robots.txt configuration

5. SEO Infrastructure

• Set up 301 redirects from any existing Webflow URLs that carry equity
• Generate and submit XML sitemap
• Configure robots.txt
• Ensure server-side rendering (SSR) or static site generation (SSG) for all pages — no client-side-only rendering
• Target Lighthouse performance scores of 90+ across all pages
• Ensure the site is fully crawlable by search engines without JavaScript dependency

6. SEO Agency Handoff

• Configure Builder.io permissions and workspace so our SEO agency can independently create new pages, edit existing content, manage metadata, and build landing pages without developer involvement
• Create reusable page templates and building block patterns in Builder.io (hero sections, comparison tables, pricing grids, CTA sections, content blocks) that the SEO agency can assemble into new pages
• Provide brief documentation or a recorded walkthrough of the Builder.io editorial workflow

7. QA and Launch

• Cross-browser testing (Chrome, Safari, Firefox, Edge)
• Mobile responsiveness validation across device sizes
• Stripe checkout flow testing (end-to-end purchase with tracking verification)
• Form submission testing
• Performance audit (Lighthouse, Core Web Vitals)
• Meta Pixel and GA4 event firing validation
• DNS cutover from Webflow to Vercel

Required Skills

• Next.js — strong production experience, comfortable with SSR/SSG, API routes, and Vercel deployment
• Builder.io — hands-on experience integrating Builder.io with Next.js, including custom component registration, content modeling, and workspace configuration
• React — building custom components that fetch and display data from external APIs
• TailwindCSS — implementing designs from Figma with Tailwind utility classes
• SEO fundamentals — server-side rendering, meta tags, structured data, redirects, sitemap generation, Core - Web Vitals optimization
• Stripe integration — checkout flow buildout and transaction tracking
• Git/GitHub — clean version control, CI/CD familiarity

Nice to Have

• Experience migrating sites off Webflow specifically
• Familiarity with sports, betting, or data-heavy marketing sites
• Experience with Astro (our eventual target framework)
• Sanity CMS experience (our eventual target CMS)

Timeline

Now. We’re looking to get started immediately and have the site live within a couple of weeks.