Custom web development

Custom web development that does the work.

Custom features, integrations, portals and web apps built by our in-house full-stack team, so your website does more of the work: quoting, booking, selling and syncing with the tools you already use.

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A web development team that builds what you need.

Custom development, from one in-house team.

Features, integrations and web apps planned around how your business works, built and tested by the team that runs your marketing.

Custom features & plugins

Quote builders, calculators, product finders, directories and booking flows, coded into your site instead of stacking plugins that slow it down.

nymachinery.com website
A site we built: nymachinery.com
  • Sherry Arora
  • Vaskar Nepal
  • Sergey Nechaev
  • Kristin Goins
  • Shana Brophy
  • Anita Kostadinov
  • Alex Melen
  • Michael Melen
  • Stephanie Cook
  • Irina Enache
  • John Toth
  • Luna Silva
  • Tony Vodicka
  • Brandy Hastings
  • Devin Riley
  • Bailey McClure
  • Ryan Whaley
  • Tiffany Reyes
  • Laura Noble
  • Anastasiia Leffingwell
  • Christen Bevis
  • Jadeverett Mayhorn
  • Tori Biagi
  • Diane Ynojosa
  • Jared Bell
  • Kayla Kearse
  • Javier Perdomo
  • Axelle Andrew
  • Garrett Smith
  • James Holmes
  • Charlie Myhran
  • Emily Noble
  • Mimi McGee
  • Deann Burris
  • Eric Nairac

Full-stack developers who build for the business.

Off-the-shelf plugins and templates only go so far. When your website needs to quote, book, calculate, sync or sell in a way no plugin does well, our in-house full-stack team builds it: front-end developers who make complex tools simple on a phone, back-end developers who build the logic, databases and APIs behind them, and QA testers who check every flow before your customers use it. We connect websites to the tools you already run, from CRMs and marketing automation to payment gateways, shipping and accounting, so leads and orders move without copy-and-paste. We build on WordPress, Shopify, Magento and custom PHP and JavaScript stacks, write code your next developer can read, and document what we build. Every project starts with a clear scope and flat quote, ships to a staging site for your review, and launches with tracking in place, so your Client Hub shows the leads, calls and sales the new features bring in. In the last two years alone we have built custom API, CRM and Zapier integrations for 20+ clients.

Screens a first-time user can finish without help.

Ordering, money-transfer and moving-booking flows, each designed around the one task the user came to do.

  • Screens SmartSites designed for Shopronto: menus, ordering and delivery tracking

    Shopronto

    Food ordering: browse, order and track delivery in a few taps.

  • Screens SmartSites designed for Sharemoney: sending money and referral screens

    Sharemoney

    Money transfer: send money abroad and invite friends, step by step.

  • Screens SmartSites designed for Fastrack Movers: quotes and bookings

    Fastrack Movers

    Moving services: quotes and bookings from a phone.

Custom sites that grow leads and sales.

See all 247 web design case studies

Companies choose SmartSites for custom web development

Custom builds planned around how the business works.

You’ll know everything your website brings in.

Know what your site earns: the visits, calls, forms and sales it produces, plus a crawl of every page that flags problems before your visitors find them, in plain language.

  • Client Hub Website Performance report: GA4 conversions, conversion rate, engagement, sessions and users
    Website PerformanceConversions, conversion rate and traffic from GA4, explained in plain English.
  • Client Hub Leads Overview report: every call, form and message in one list, leads per day, lead sources and time of day
    Leads OverviewEvery call, form and message your site brings in, in one de-duplicated list.
  • Client Hub Form Submissions report: submissions, verified leads and junk, leads over time, and each lead with its source, UTM campaign and qualified flag
    Form SubmissionsVerified leads vs junk, with the source, campaign and UTM behind each one.
  • Client Hub Phone Calls report: call volume, talk time, recordings and AI call summaries with outcomes such as qualified, booked, missed and vendor pitch
    Phone CallsRecordings, AI call summaries and outcomes: booked, qualified, missed or vendor pitch.
  • Client Hub Site Crawl report: indexable pages, errors, warnings and notices, with issues such as broken pages, heavy images, long titles and slow server responses
    Site CrawlBroken pages, heavy images, slow responses and SEO issues, caught before visitors notice.
  • Client Hub Google Search Console report: search conversions, impressions, average position, click-through rate and clicks
    Google Search ConsoleHow often you appear in Google, where you rank, and the clicks and conversions it brings.

Custom web development questions

Most projects are quoted as one flat fee for an agreed scope after we review your requirements, so you know the cost before any code is written. Price depends on the logic involved, how many tools the feature connects to and the screens your users need. For ongoing work we also offer dedicated developers or on-demand hours. If you have an SEO plan with us, its monthly hours can also go to web development. Get a free development proposal.

It depends on the scope: a single calculator or integration takes far less time than a customer portal or web app. We give you a timeline with the scope and flat quote before work starts. Feedback rounds and how quickly approvals come back decide most of the schedule, so quick replies keep the launch date close.

Yes. You don't need a new website to get a quote builder, a booking flow, a product finder or a fix for a plugin that has stopped working. We work on WordPress, Shopify, Magento and custom PHP sites. If your site is on a builder that limits custom code, we'll tell you up front what is possible there and when moving to WordPress makes more sense.

Every feature is built and tested in a private development space, never on your live site. Our QA testers check every flow on desktop and mobile before your customers use it. You click through it yourself, and we check tracking before launch so your Client Hub shows the leads, calls and sales the new feature brings in.

When a plugin can't do what your business needs, slows the site down or adds security risk. Custom code is built for your exact workflow, carries nothing you don't use and is easier to maintain. If a well-built plugin already does the job, we will tell you.

We build on WordPress, Shopify, Magento and custom PHP and JavaScript stacks, with front-end frameworks where they help. We choose the stack that fits your project, then write and document code your next developer can read and maintain.

We build one. When a CRM, ERP, payment, shipping, accounting or marketing tool has no connector that does what you need, our back-end developers work with its API directly. When a simpler link will do, we set it up with Zapier, so leads, orders and data move without copy-and-paste. For the everyday integrations, see Web Design.

Yes. The code we write for you is yours, documented and kept in your hosting or repository, so any developer can pick it up.