n3s.agency

Service 03 · Web development

Sites, landings, web apps that don't embarrass your brand.

Next.js / Django, design systems, real-time dashboards, headless CMS. Speed and SEO are non-negotiable: Lighthouse ≥ 90, LCP < 2.5s, mobile-first, accessible.

What's included

What the service consists of.

01

Design system → code

Not 'we'll build from the Figma' — a real design system: tokens, components, docs. Easy to extend without a designer on every change.

02

Speed and SEO from day one

SSR/SSG, image optimisation, subsetted fonts, structured data. Target: Lighthouse ≥ 90 on mobile — not 'we'll fix it later'.

03

Headless CMS

Content editors update text and blocks themselves, no developer required. Strapi / Sanity / Django with JSON blocks.

04

Real-time dashboards and apps

Dashboards, customer accounts, calculators. WebSocket, optimistic updates, sensible empty states.

05

Accessibility & UX polish

WCAG AA, focus states, ARIA, real keyboard navigation. Mobile-first — not as an afterthought.

06

Analytics and experiments

Yandex.Metrika / GA4, event model, A/B tests. We see what works, not just what's prettier.

How we work

Five steps.

  1. 01

    Strategy & IA

    Positioning, audience, sitemap, offer. One document before any design work.

  2. 02

    Design system

    3 concepts → pick one → tokens, components, prototype of key screens. In code, not Figma.

  3. 03

    Development

    Weekly sprints. Every week — a live staging you can poke at.

  4. 04

    Content & SEO

    Content migration, meta, OG, sitemap, robots, 301s from the old site. We don't skip it.

  5. 05

    Launch & support

    Blue-green release, 48h monitoring, then support hours and campaign-driven features.

Tools for the job

  • Next.js 16 · React 19
  • Tailwind 4
  • TypeScript
  • Headless: Strapi / Django
  • Vercel / Docker

FAQ

What people usually ask.

WordPress is great for content sites with little interactivity. If you need real-time, customer accounts, calculations, proper speed and a non-standard admin — Next.js is faster long-term.

Yes. From 250k ₽, 2-4 weeks. Built on a design system so you can scale without rewrites.

Yes. SSR/SSG, mobile-first, sitemap, structured data, OG, speed. We don't promise 'rank #1 in a month' — we promise a clean technical base content strategy can land on.

Fine. We do a technical review of the mocks, build design tokens separately, then code. If the Figma was 'eyeballed' — we usually tighten the design system together.

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