Web Development

Web Development Services

Custom sites and applications built for search and speed from the first commit

Most agency websites are decoration with a database bolted on — pretty in the mockup, slow in the browser, and invisible to Google the day they launch. We build the other kind: clean front-end and back-end code, engineered so performance, accessibility, and crawlability aren't a post-launch cleanup project but the way the thing was built. We're engineers who do SEO, not marketers who Googled it, and it shows in every line we ship.

Why it matters

Your website is either an asset that compounds or a liability that leaks

A website is the one marketing asset you actually own — and the one most businesses build on the cheapest possible foundation. A page-builder theme with forty plugins loads in six seconds, ships a megabyte of JavaScript nobody asked for, and fails Core Web Vitals on mobile. Every one of those problems costs you twice: once when a visitor bounces before the page paints, and again when Google ranks the slow, bloated page below a faster competitor.

The fix isn't a plugin. It's engineering discipline that most agencies simply don't have. Clean, maintainable code means the next feature ships in days instead of breaking three others. Semantic, accessible HTML means screen readers and search crawlers read the same clear structure. A real build process means images are optimized, JavaScript is split and deferred, and the critical rendering path is measured — not guessed.

This is where our SEO background changes the whole calculus. We don't build a site and then hand it to an SEO team to retrofit. We build it so the technical foundation is right from the first commit: crawlable routes, fast server responses, structured data baked into the templates, and a URL architecture that won't need a redirect map in eighteen months. Get the foundation right and every future page, campaign, and product launch inherits a site that's already engineered to rank.

The full scope

Everything that goes into a site built right

Interfaces that are fast, accessible, and semantic by default

The front-end is where speed and search collide. We write semantic HTML, scoped CSS, and lean JavaScript — not a page builder's export. That means the DOM Google crawls is the same clean structure a screen reader navigates, images ship in next-gen formats at the right size, and the critical rendering path is measured rather than hoped for. Interactive where it needs to be, static where it can be.

  1. Semantic, accessible HTML that passes WCAG AA
  2. Component architectures in React, Next.js, Astro, or vanilla
  3. Core Web Vitals engineered into the build, not patched after
  4. Responsive layouts tested on real devices, not just a resize
  5. Progressive enhancement so content renders without JS

Server-side code and integrations that are fast and don't fall over

The back-end is where response time, data integrity, and reliability live. We build server-side logic and APIs that return in milliseconds, connect cleanly to the tools your business already runs on, and handle real traffic without crumbling. Slow server responses (TTFB) quietly cap your rankings and your conversion rate — we treat them as a first-class engineering problem, not an afterthought.

  1. REST and GraphQL APIs built for speed and clear contracts
  2. Third-party integrations: CRM, payments, ERP, marketing tools
  3. Server-side rendering and edge caching for fast TTFB
  4. Database design that scales instead of bottlenecking
  5. Authentication, webhooks, and background jobs done properly

Content systems your team can actually run without breaking the site

A CMS should let your marketing team ship pages, not let them accidentally tank performance. We build on WordPress, headless setups (Sanity, Contentful, Strapi), and Webflow — configured so editors get flexible building blocks while the code underneath stays fast and SEO-clean. No mystery plugins, no bloat, no calling a developer to change a headline.

  1. Custom WordPress themes and blocks — no page-builder bloat
  2. Headless CMS with a fast front-end of your choice
  3. Editor-friendly components with guardrails on performance
  4. Structured data and metadata controls built into templates
  5. Clean content models that map to how your team works

The technical foundation built in, not bolted on afterward

This is the part almost every dev shop skips and every SEO agency wishes they could reach. Because we do both, the site is engineered to rank on day one: server-rendered content Google can read, a URL structure that won't need a redirect map later, JSON-LD in the templates, and internal linking planned as architecture. When the SEO campaign starts, it starts on a foundation that's already right.

  1. Server-rendered content so crawlers index the real page
  2. Clean, stable URL structure and canonical rules from the start
  3. JSON-LD structured data baked into page templates
  4. XML sitemaps, robots, and metadata handled at the code level
  5. Internal-link architecture planned before the first page ships
Since 2019

The engineering behind sites that rank, load, and convert

3.1B
search impressions earned for our clients
43M
clicks driven to client websites
4.5M
keywords ranked across client sites
1.2M
pages ranked in Google
Our development stack

The technologies we build on

We pick the right tool for the job, not the one we are locked into.

React
React UI library
Next.js
Next.js Framework
Astro
Astro Content sites
Vue
Vue UI library
Nuxt
Nuxt Vue framework
Svelte
Svelte UI library
Angular
Angular Framework
Node.js
Node.js Back end
TypeScript
TypeScript Typed JS
PHP
PHP Server
Python
Python Back end
Laravel
Laravel PHP framework
Django
Django Python framework
GraphQL
GraphQL APIs
Tailwind
Tailwind Styling
Sass
Sass Styling
HTML5
HTML5 Markup
CSS3
CSS3 Styling
PostgreSQL
PostgreSQL Database
MySQL
MySQL Database
GitHub
GitHub Version control
How we work

How a Swarm build runs, start to launch

01

We map what you're building and why before we write code

Every good build starts with clarity. We define the goals, the pages and features, the integrations, and the technical constraints — then commit them to a scope you can actually hold us to, so there are no surprises when it's time to ship.

Goals and success metrics

What the site has to do — traffic, conversions, and the KPIs that prove it.

Feature and page inventory

Every template, integration, and interaction, mapped and sized.

Technical requirements

Stack, hosting, integrations, and the constraints that shape the build.

02

We design the interface and architect the system together

Design and engineering aren't sequential — they inform each other. We plan the information architecture, URL structure, data models, and component library alongside the visual design, so what gets designed is what can actually be built fast and ranked well.

Information & URL architecture

Site structure and URLs planned for users and crawlers at once.

Component and data models

A reusable component library and clean data models under it.

Performance budget

Speed targets set upfront so nothing ships that blows the budget.

03

We write clean, tested code in a real engineering workflow

This is where discipline separates us. We build in version control with staging environments, code review, and automated checks — semantic markup, optimized assets, and structured data going in as we go, not as a cleanup pass at the end.

Version control & staging

Every change reviewed and tested in staging before it goes live.

Performance & SEO in-line

Optimized assets, semantic HTML, and schema built in as we code.

Accessibility checks

WCAG conformance verified during the build, not audited after.

04

We ship it safely and prove it performs

Launch day is a checklist, not a gamble. We deploy with redirects mapped, run the technical and performance QA, confirm Google can crawl and index the new site, and monitor from the first hour so anything that slips is caught fast.

Safe deploy & redirects

Redirects mapped 1:1 and a rollback plan ready before we push.

Launch QA

Core Web Vitals, accessibility, and crawlability verified live.

Day-one monitoring

Search Console and uptime watched from the first hour on.

The difference

We build for the long haul, not the demo

Most agencies build a site, then hand it to an SEO team to retrofit — bolting on structured data, fixing URLs, and chasing Core Web Vitals after the fact. We build it right the first time because the same people who write the code understand how Google reads it. The result is a site that's fast, accessible, and rankable from the moment it goes live — not a foundation you have to pay to repair.

Talk to an engineer
By industry

What good web development looks like in your industry

SaaS & Tech

SaaS sites live and die on JavaScript frameworks Google struggles to render, plus docs and marketing pages that have to convert trial signups while staying crawlable.

We build with server-side rendering so content is actually indexed, structure documentation and programmatic pages for scale, and engineer the marketing site and app around fast TTFB and clean component architecture — so growth doesn't mean rebuilding.

Learn more

E-commerce

Storefronts carry huge catalogs, heavy imagery, and third-party scripts that quietly wreck speed — and every tenth of a second of load time costs conversions and rankings.

We build fast product and category templates with Product and Review schema baked in, optimize images and defer non-critical scripts, and integrate cart, checkout, and inventory cleanly so the catalog stays fast as it scales.

Learn more

B2B

B2B sites have to speak to a long sales cycle and multiple stakeholders while feeding clean data into the CRM and marketing stack the sales team runs on.

We build fast, credible sites with the integrations that matter — CRM, forms, and marketing automation wired in properly — and an SEO-first architecture that captures demand at every stage instead of only the bottom of the funnel.

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Professional Services

Firms in law, finance, and consulting build large libraries of practice-area and location pages that must load fast, look authoritative, and rank in competitive local markets.

We build scalable page templates with LocalBusiness and service schema, an internal-link architecture that keeps pages from cannibalizing each other, and an editor experience that lets the team publish without breaking performance.

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Media & Publishers

Content sites run enormous archives and ad stacks that crush Core Web Vitals — layout shift from ads, render-blocking scripts, and crawl budget wasted on thin URLs.

We build fast, ad-friendly templates that hold CLS in check, structure archives and pagination for efficient crawling, and add Article and author schema so content is eligible for rich results and AI Overviews.

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Startups

Early-stage companies need to launch fast without building technical debt they'll pay for at Series A — a landing page today that becomes a real platform tomorrow.

We build on clean, maintainable foundations that ship quickly and scale without a rewrite, with SEO and performance right from the first commit so the site earns organic traffic while the paid budget is still tight.

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What you get

What you actually walk away with

Clean, maintainable code

A codebase built to be extended, not a page-builder tangle — version-controlled, documented, and yours to keep.

A site engineered for speed

Core Web Vitals hit on real devices, with performance budgets held from the build, not patched afterward.

SEO built into the foundation

Crawlable routes, structured data, and a clean URL architecture in place from day one — no retrofit required.

A safe, monitored launch

Redirects mapped, accessibility verified, and Search Console watched from the first hour live.

Common questions

Frequently Asked Questions

Do you build custom or use templates and page builders?

We build custom — clean front-end and back-end code, or lean custom themes and blocks on top of a CMS. Page builders like Elementor and Divi are where speed and maintainability go to die: they ship enormous amounts of unused CSS and JavaScript that fail Core Web Vitals and bury your content in markup Google struggles to read. We give your team the same editing flexibility without the bloat underneath.

Why is 'engineers who do SEO' actually different?

Most web shops build a site and hand it off, and any SEO happens later as a retrofit — bolting on schema, fixing URLs, and chasing page speed after the fact. Because we do both, the technical foundation is right from the first commit: server-rendered content, crawlable routes, structured data in the templates, and a URL structure that won't need a redirect map in a year. You launch on a foundation that's already engineered to rank.

Can you work with our existing site or do we start over?

Both are on the table. Sometimes the right move is a targeted rebuild of the slow, broken parts; sometimes the technical debt is deep enough that a clean rebuild costs less over two years than patching. We audit what you have, tell you honestly which path serves you, and if we do migrate, we map every redirect 1:1 so you don't lose the rankings you've earned.

What tech stack do you build on?

We pick the stack that fits the job, not the one we're selling. That includes React and Next.js, Astro, custom WordPress, and headless CMS setups like Sanity or Contentful, with back-ends and APIs designed for fast response times and clean integrations. What stays constant is the discipline — version control, staging, code review, and performance and SEO engineered in regardless of the tools.

Is accessibility included or an add-on?

Included. We build to WCAG 2.1 AA as a default — semantic HTML, keyboard navigation, proper contrast, and screen-reader-friendly structure — because it's the right way to build and because the same clean, semantic markup that helps assistive tech also helps search crawlers read your pages. Accessibility and SEO are the same discipline pointed at two audiences.

What happens after launch?

We monitor from day one — Search Console for crawlability and indexation, uptime and performance, and Core Web Vitals over time. From there we can hand off cleanly to your team with documentation, keep the site on a maintenance retainer, or roll straight into an SEO engagement on the foundation we just built. Your call; we're set up for any of the three.

Get started

Build a site that's fast, findable, and yours

Tell us what you're building and we'll show you how we'd engineer it — clean code, real performance, and SEO baked into the foundation instead of bolted on later. No page-builder bloat, no retrofit, no PDF that dies in a folder.