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HarLyn
Capabilities/Web Development
High-Performance Web Systems

Web Development

HarLyn Digital Partners builds production Next.js web applications engineered for sub-second load times, clean architecture, and readable source you can hand to another developer. This site and harrisonndeke.co.ke are both live proof of the stack in production.

How we build

Content & data model → Next.js App Router build → static/edge rendering → structured data & SEO → CI/CD → zero-downtime edge deploy

What we deliver

  • Next.js App Router production codebase with TypeScript
  • Sub-second load times and strong Core Web Vitals as a baseline
  • Clean, responsive design systems with zero unnecessary dependencies
  • Built-in structured data (JSON-LD), sitemap & technical SEO
  • Strict CSP, SSL/TLS & HTTPS headers
  • Automated CI/CD with zero-downtime edge delivery

Stack

Next.jsTypeScriptTailwind CSSReactSupabasePostgreSQLVercelCloudflare

Verified production work

harrisonndeke.co.ke — Next.js portfolio & work indexBillson Solar AI Sales System — 0.6s load, live

Related capabilities

Internal Business Systems — dashboards & internal tools

Frequently asked

What web development stack does HarLyn Digital Partners use?

Next.js (App Router) with TypeScript, Tailwind CSS, and edge deployment on Vercel or Cloudflare. It's the same stack running this site and Harrison Ndeke's personal site, harrisonndeke.co.ke — both shipped as proof of the stack in production, not a pitch deck.

How fast are the sites you build?

We target sub-second load times and strong Core Web Vitals as a baseline, not an optimization pass done later — static generation, edge caching, and minimal client-side JavaScript by default.

Do you build custom web applications, or just marketing sites?

Both. We build marketing and content sites, and full web applications with authentication, databases, and business logic — using Next.js, Supabase, and PostgreSQL for data-backed products.

Is SEO and structured data handled by default?

Yes — clean semantic markup, JSON-LD structured data, sitemap and metadata generation, and technical SEO fundamentals are built into every site rather than bolted on afterward.

Do you offer web development outside Kenya?

Yes. HarLyn Digital Partners is based in Nairobi with a global operating range, working async with clients across East Africa, North America, Europe, and the UK.

Have a web application project in mind?

Start with the 48-hour Secure Digital Workflow Assessment, or reach out directly.

48-Hr SprintContact Us