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.

    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 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
    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 a web app project work?

    Clarify requirements, users, roles and goals. Define concept, architecture and priorities. Implement in iterations with early feedback. Launch with staging and controlled rollout. Then operations and further development.

    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