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Website and app development in São Paulo

Nume Company builds websites and apps in São Paulo with a focus on usability, speed, SEO and conversion. From UX/UI design to development and integrations, we deliver platforms that turn visits into customers, for brands such as Harley-Davidson, Serigy, Beflex, Grupo Pierre, Barba Hall and Água Dias D'Ávila.

Harley-Davidson website created by NumeBeflex website created by NumeÁgua Dias D'Ávila website created by NumePrime Veículos website created by NumeAmica Systems website created by Nume
UX/UISEOHigh performance
  • 18+years in the market
  • +180businesses served
  • 5,0rating from 39 Google reviews
  • Brazil and the USinternational websites, such as the Naturanic launch in both countries

What does a website design agency do?

A website design agency plans, designs and builds a company's website or app, making sure it is easy to use, fast, secure, findable on Google and able to generate enquiries and sales.

At Nume, every project starts with strategy: who will use it, what they need to find and what action we want them to take. Only then come UX/UI design and development. As a full-service agency, the website is integrated from the outset with SEO and GEO, paid media and the brand identity.

In short: a website design agency builds fast, well-designed websites and apps that are optimised for Google, with a focus on turning visits into customers.

Gallery of websites and apps

A selection of projects developed by Nume. Drag, use the arrows or click to navigate.

Types of project

  • Corporate websitePresents the company, its services and case studies, with pages optimised for SEO.
  • Landing pageA page focused on one offer or campaign, built to convert paid traffic.
  • E-commerceOnline shop with catalogue, payment and logistics integration.
  • AppApps for iOS and Android, such as the Barba Hall booking app and the Beflex benefits app.
  • Portal and client areaSystems with login, dashboards and CRM integrations.
  • International websiteProjects in more than one language, such as the Naturanic launch in Brazil and the United States.

What's included in website development

  • Strategy and architectureSite map, user journey and the content of each page.
  • UX/UI designPrototypes and layouts designed for usability and conversion.
  • DevelopmentClean, responsive code built to scale.
  • SpeedImage optimisation, loading times and Core Web Vitals.
  • Technical SEOHeading structure, URLs, sitemap, structured data and indexing.
  • IntegrationsWhatsApp, forms, CRM, RD Station, Salesforce, payments and analytics.
  • Security and LGPDSSL certificate, policies and cookie consent.
  • Training and supportThe independence to edit content, and support after launch.

How it works, step by step

  1. Immersion and objectives

    We understand the business, the audience and the website's goals: leads, sales, bookings or awareness.

  2. Architecture and content

    We organise the pages and content around what your audience searches for.

  3. UX/UI design

    We create prototypes, test the navigation and approve the layout with you.

  4. Development and testing

    We code, integrate and test on mobile, tablet and desktop.

  5. Launch and development

    We go live, measure user behaviour and keep improving.

Why speed and SEO matter

Google uses page experience, including loading speed and stability, as one of its ranking signals, measured by Core Web Vitals. Slow websites lose rankings and visitors. That is why every Nume website is built with optimised images, lean code and a structure ready for SEO and for being read by artificial intelligence.

Website and app case studies

We also developed the website for Grupo Pierre, the website for Platinum Consórcio and the new identity and website for Oiti.

How much does it cost to build a website in São Paulo?

Websites and apps are quoted per project. The cost depends on the number of pages, the level of design customisation, the integrations, the language and features such as e-commerce or a login area. Ongoing maintenance, content and SEO can follow on a monthly fee.

See the pricing models in How Much Does It Cost to Hire a Marketing Agency in São Paulo.

How to choose the agency to build your website

  • A real portfolioBrowse the websites the agency has built, on mobile and desktop.
  • SEO from the startA beautiful website that doesn't appear on Google doesn't generate customers.
  • SpeedTest the agency's websites on Google PageSpeed Insights.
  • OwnershipMake sure the website will be yours and that you will be able to edit the content.

Related services

Our office in Itaim Bibi

Nume operates in Itaim Bibi, one of São Paulo's main business hubs. Here we welcome clients for planning meetings, results presentations and strategy workshops.

Lounge at the Nume Company office, digital marketing agency in Itaim Bibi, São PauloMeeting room at Nume Company, marketing agency in São PauloWorkspace at the Nume office in Itaim Bibi

Book a visit or an online meeting via WhatsApp +55 15 99758-7720.

Frequently asked questions

How much does it cost to build a website in São Paulo?

It depends on the number of pages, the design, the integrations and features such as e-commerce or a login area. Websites are quoted per project, and Nume offers a free consultation to define the scope.

Does Nume build apps?

Yes. We build apps for iOS and Android, such as the Barba Hall booking app and the Beflex benefits app.

Is the website optimised for Google from the start?

Yes. Every Nume website is delivered with technical SEO, optimised speed, structured data and a structure ready for content.

How long does it take to build a website?

It depends on the size and complexity. The timetable is set at the start of the project, with stages for architecture, design, development and testing.

Will I be able to edit the website afterwards?

Yes. We deliver the website with training so your team can edit the content, and we offer ongoing support and development.

Does Nume build websites in other languages?

Yes. For example, we launched the Naturanic website in Brazil and the United States.

Updated in October 2026 · By Pedro Bruder, CEO and founder of Nume Company