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Web App Agency Berlin

Web Apps
With Ambition.

We develop custom web applications for companies: portals, tools, dashboards and platforms with care for usability, interface quality and technical substance.

Discuss a Web App
Custom Web Applications

Interface, Logic and Data in One System.

A customer portal that brings orders, documents and communication together. An internal tool that structures operational workflows. A dashboard that combines metrics from CRM, shop and accounting. Each of these projects has its own users, its own data and its own business logic, and needs a team that connects product thinking, data architecture and interface design.

We bring interface design, frontend, backend, data models, APIs and operations together in one team. The result is web applications that run cleanly, stay understandable in daily use and can keep developing, whether they are built on Next.js, Vue, a custom architecture or an existing system.

Typical Web App Projects

What We Develop.

Web applications for different use cases, each with its own requirements but the same standard for quality and usability.

01

Customer Portals and Login Areas

PortalLoginCustomers

Protected areas for customers, partners or clients with orders, documents, communication and individual views, from self-service portals to platforms with their own business logic and system integrations.

02

Internal Tools and Administration

ToolsAdminProcesses

Admin interfaces, planning tools and operational systems with custom process logic, roles, approvals and connections to CRM, ERP, accounting or project management.

03

Dashboards and Analytics

DashboardReportingAnalytics

KPI tracking, reporting and analytics tools, from live dashboards with real-time data to periodic reports with filters, exports and drilldowns.

04

Booking and Application Systems

BookingFormsLogic

Forms, availability, calendar logic, review steps, payment connections and confirmations for bookings, applications or multi-step input flows with business rules.

05

Platforms With Multiple Roles

PlatformRolesPermissions

Applications where different user groups have different tasks, views and permissions, from marketplaces and collaboration platforms to matching systems with workflows and operational control.

06

SaaS and Digital Products

SaaSProductGrowth

Web applications as standalone products with onboarding, billing, user management, API access and the technical foundation for operation and scaling.

Quality Criteria

What Makes a Good Web App.

A web application proves its value in daily use, where interface, logic and technology have to work together.

The Interface Makes Complexity Accessible

Every user sees what they need, at the right depth, with clear guidance through tasks, states and decisions.

The Data Model Carries the Application

Roles, permissions, relationships, states and business logic need an architecture that can handle changing requirements, new integrations and growing data volumes.

Performance Is Felt

Loading times, responsiveness and stable availability shape whether an application is accepted in daily work.

Security Is Part of the Architecture

Authentication, authorization, data access, validation, encryption and audit trails belong in the architecture from the beginning.

The Application Stays Extendable

New features, roles, APIs, AI capabilities or changed business logic: good architecture can absorb change without the system needing to be rebuilt from the ground up.

Services

From Idea to Running System.

Web applications connect concept, design, frontend, backend, data and operations. We bring every part together into one coherent system.

01

Requirements Analysis and Concept

Clarifying users, roles, workflows, data and goals creates architecture, priorities and a clear scope, whether greenfield or as an extension of existing systems.

AnalysisConceptScope
02

UX and Interface Design

User guidance, information architecture, layouts and design systems for applications that remain understandable even with many functions, views and roles.

UXUIDesign
03

Frontend Development

React, Next.js, Vue, TypeScript: responsive layouts, performant data views, real-time interactions and complex state logic.

ReactNext.jsVueTypeScript
04

Backend, APIs and Data Model

Node.js, Python, PHP, PostgreSQL, MySQL, Supabase: REST and GraphQL APIs, authentication, webhooks and integrations with CRM, ERP, payment systems and third-party APIs.

Node.jsPythonAPIsPostgreSQL
05

Testing and Launch

Functional, integration and load tests, staging environments, controlled rollouts and migration strategies for a reliable transition into operation.

TestingQALaunch
06

Operations and Further Development

Hosting on managed servers, in the cloud or on owned infrastructure. Deployments, monitoring, backups, security updates and continuous development.

OperationsHostingDevOps
Why BxW

Why BxW.

Web applications connect interface design, business logic, data and infrastructure. We bring these areas together in one team.

01

Design and Development From One Understanding

Interface and technology are created together. What works in the design also works in the browser because both are shaped by the same team.

02

Full Stack With Breadth and Depth

React, Next.js, Vue, Node.js, Python, PHP, PostgreSQL, Supabase, Docker, Linux: we choose technology based on the requirements of the project.

03

Sensitivity for Interfaces

We come from web design and know how interfaces need to look and feel so they are accepted in daily use, from dashboards to complex forms.

04

Data, AI and Automation When Needed

Data pipelines, AI features, agents or automations can be integrated directly into the application without adding another team.

05

Built for Operation

Hosting, monitoring, deployments, security and scaling are part of the plan from the beginning, not something added afterwards.

Existing Applications

Develop Your Web App Further?

We take over existing web applications and develop functions, interfaces, performance, architecture and integrations further in a focused way.

Discuss a Project
In Practice

Web Applications in Practice.

Portals, platforms, tools and dashboards: projects where interface, logic and data come together.

Dentlivery portfolio preview of the digital platform

Dentlivery Platform

Web platform with process logic, routing and daily operations for dental couriers.

View project
TenderShift portfolio preview of the platform concept

TenderShift

Product and UX concept for a web application with tender logic and structured interface.

View case
Incari custom onboarding portfolio preview of the platform

Incari Custom Onboarding

Custom onboarding with user guidance, input flows, analysis and verification logic.

View project
BI dashboards with KPI logic, reporting and data models

BI & Dashboards

Dashboard systems for metrics, analysis and control across different business areas.

View case
Key Questions

Before the Project.

What does BxW do as a web app agency?

We develop custom web applications from requirements analysis through concept, design, frontend, backend and launch to ongoing operations: portals, tools, dashboards, platforms and SaaS products.

How is a web app different from a website?

A website presents content. A web app processes tasks, data and workflows with login, roles, individual views and its own business logic. The demands on architecture, security and data modeling are significantly higher.

Which technologies does BxW use?

React, Next.js, Vue and TypeScript in the frontend. Node.js, Python or PHP in the backend. PostgreSQL, MySQL or Supabase for data. Docker and Linux for deployment and operations. REST, GraphQL and webhooks for integrations. We choose based on requirements.

Can BxW also handle design?

UX concept, information architecture, design systems and interface design come from the same team as development. This keeps interface and technical implementation grounded in one shared understanding.

How does custom web app development work?

We begin with users, roles, tasks, data and business logic. From there, we develop the concept, interface and technical architecture, then implement the web app in prioritized stages. A robust first product scope can be tested early before further features, integrations and roles are added. Launch, operations and further development are planned from the outset.

What affects the scope?

Scope depends on features, user roles, data model, integrations, business logic, security requirements and operating environment. At the beginning, we clarify where the strongest leverage lies and plan a meaningful first step around that.

Can a web app be extended with AI?

When data, permissions and use case are clear, classification, text processing, recommendations, knowledge search or agents can be integrated directly into the application.

How is a web app hosted?

On managed servers, in the cloud or on owned infrastructure. We set up deployments, monitoring, backups and security updates so operations remain reliable.

Can BxW take over existing web apps?

We take over existing web apps when architecture, code and infrastructure can be assessed properly. From there, we develop functions, interfaces, performance and integrations further.

Does BxW support web apps after launch?

If needed, we support hosting, monitoring, security, updates and new functions long term so the application stays stable after launch and can continue to develop.

Discuss a Web App Project.

Whether portal, tool, dashboard or platform: the best starting point is a clear conversation about users, tasks and goals.

Discuss a Web App
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