# Web: Front-end, back-end, and full-stack web development.

URL: https://extra.dev/services/web

**Web applications built to grow with your business**

Full-stack web development for software that stays fast, secure and ready to scale.

## Foundations for sustained performance

Web engineering provides the foundation for digital products that people use, businesses operate and teams rely on. Our teams bring together the interface, application logic, data and connections to other systems that make these products work.
Architecture, security, performance and the way systems exchange data are planned together from the start. This gives the application a clear path for new features, more users and increasingly demanding operations.

What this includes:
- **Frontend development**: Building responsive, accessible interfaces and the interactions through which users work with the application.
- **Backend development**: Developing the application architecture, core functionality and rules that support its features and workflows.
- **Data architecture & management**: Organising, storing and processing application data, including databases, search and data migration.
- **APIs & system integration**: Connecting the application with other software and services, including payments, communication and business systems.
- **Application security & performance**: Implementing access controls, protecting data and testing how the application performs as usage grows.
- **Maintenance & modernisation**: Managing releases, maintaining existing applications and improving their features, structure and underlying technologies.

How we work:
- **Technical decisions explained and recorded**: Architecture and implementation choices are based on product needs, existing systems and operating constraints. Trade-offs in performance, complexity and cost are made clear, and significant decisions are recorded for future development.
- **Changes kept focused and reviewable**: Development is organised into focused changes that can be understood, reviewed and tested. Each change is checked in context, including its effect on data, connected systems and existing behaviour.
- **Quality checked throughout development**: Security, accessibility and performance are considered as features are built. Automated checks and targeted testing verify the application against its functional and operational requirements.
- **Documentation maintained with the software**: System structure, dependencies, interfaces and operating procedures are documented alongside the application. This gives the teams responsible for development and support the context needed to understand it and make informed changes.
- **Releases controlled and reversible**: Changes are released through a repeatable process, with automated builds and deployments where the environment supports them. Each release has clear checks after deployment and a defined rollback path.

Stack: Front-end: TypeScript, React, Next.js, Angular, Vue, Nuxt, Remix, Astro · Back-end: Node.js, NestJS, Express, Python, Django, Ruby on Rails, Go, .NET, ASP.NET, Laravel, PHP · Data & APIs: PostgreSQL, MySQL, SQL Server, MongoDB, Redis, Elasticsearch, GraphQL, Prisma · Integrations: Stripe, Shopify, Supabase, Firebase, Socket.IO.

Questions we get about this discipline:
- **Can you build part of an application, or take responsibility for the whole thing?** Both. We can develop a defined part of an existing product or bring together the interface, backend, data and integrations for a complete application. The boundaries and responsibilities are agreed before work begins.
- **Can you improve an application without rebuilding it?** Yes. We assess the current architecture, code, performance and release process, then identify changes that address the actual constraints. A rebuild is considered when improving the existing application would cost more or leave important problems unresolved.
- **Will you work with our existing technology?** Where it remains suitable, yes. We review the stack against the product’s requirements and the ability to maintain it. If a change is warranted, we explain the benefit, migration work and long-term cost before recommending it.
- **Can you integrate with our existing systems and services?** Yes. We work with existing APIs, data sources and third-party services, including business systems and payment providers. We establish how data and responsibilities move between systems and address limitations early.
- **What happens after the application launches?** Release checks, monitoring and support responsibilities are planned before launch. We can continue improving and maintaining the application or document the system and release process for the team that will operate it.

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Published by Extra.dev (https://extra.dev), a software engineering team in Ljubljana, Slovenia.
Canonical page: https://extra.dev/services/web
Contact: hello@extra.dev · Replies within one working day
Site index for agents: https://extra.dev/llms.txt · Full text: https://extra.dev/llms-full.txt