Services

Web Application Development in South Africa

Fast, accessible web applications, portals and business websites built with React, Next.js and Node.js.

Discuss your project

Web application development is building software that runs in the browser: customer portals, dashboards, booking systems, marketplaces and internal tools. Unlike a brochure website, a web application has user accounts, business logic and a database behind it.

Mohteknologies builds web applications and high-performance marketing sites on React and Next.js, with Node.js or Python back ends. We focus on speed on South African mobile networks, accessibility and search-engine visibility from day one.

Problems we solve

  • A slow or outdated website that doesn't rank or convert
  • Customers phoning or emailing for information they could look up themselves in a portal
  • Internal tools built on spreadsheets or desktop software that staff can't use remotely
  • A web app that has become hard to change because of years of quick fixes

Who it's for

  • Businesses that need a customer or partner portal
  • Companies replacing desktop or spreadsheet tools with browser-based systems
  • Startups launching a web-based product
  • Marketing teams that need a fast, search-friendly website they can update

Why work with us on web development

Works everywhere

One application for desktop, tablet and mobile browsers, with nothing to install.

Fast by design

Server rendering, image optimisation and caching keep load times low, which helps both users and search rankings.

Search-engine friendly

Clean URLs, structured data and server-rendered content so Google can understand every page.

Accessible

Keyboard navigation, readable contrast and semantic HTML, following WCAG guidelines.

How we deliver

Every engagement follows our development process, adapted to the work involved.

  1. 01

    Discovery

    We start with your goals, users, constraints and existing systems. The output is a written scope, a prioritised feature list and an honest estimate, so you can decide before committing to a build.

  2. 02

    UX and interface design

    Wireframes and visual designs for key pages, tested with real users where possible.

  3. 03

    Front-end and back-end build

    Components, APIs and database built in parallel, with a staging site you can review throughout.

  4. 04

    Performance and SEO review

    Before launch we check Core Web Vitals, metadata, redirects and analytics.

  5. 05

    Launch and support

    We deploy to production, set up monitoring and hand over documentation. After launch we stay on for bug fixes, improvements and new features under a support arrangement that suits you.

Technologies

  • React
  • Next.js
  • TypeScript
  • Node.js
  • Tailwind CSS
  • GraphQL
  • PostgreSQL
  • Vercel
  • AWS

Integrations

  • Headless CMS platforms
  • Payment gateways such as Paystack and NetCash
  • Analytics and tag management
  • CRM and marketing automation
  • Authentication providers
  • Maps and location services

Security considerations

  • Protection against common web vulnerabilities such as injection, XSS and CSRF (OWASP Top 10)
  • Secure session handling and optional multi-factor authentication
  • Rate limiting and validation on forms and APIs
  • Security headers and HTTPS enforced across the site

Performance and reliability

  • Targets for Largest Contentful Paint, layout shift and interaction responsiveness (Core Web Vitals)
  • Static generation for content pages and edge caching for global delivery
  • Modern image formats (WebP/AVIF) served at the right size for each device

Web Development: frequently asked questions

What is the difference between a website and a web application?

A website mainly presents information. A web application lets users log in, enter data and complete tasks, with business logic and a database behind it. Many projects combine both.

Why do you use React and Next.js?

They are widely used, well supported and easy to hire for. Next.js adds server rendering and static generation, which improves speed and search visibility.

Will my website be optimised for search engines?

Yes. Technical SEO, including metadata, sitemaps, structured data, canonical URLs and performance, is part of every web build.

Can I update the content myself?

Yes. We can connect a content management system so your team can edit pages, blog posts and images without a developer.

Related services

Further reading

Let's talk about what you're building

Whether you have a detailed spec or a rough idea, we'd like to hear about it. Book a free 30-minute discovery call and get an honest view of the right approach.

Contact our software development team