ENSK
Free roadmap
SERVICE / WEB APPLICATIONS

Custom web application development that holds up under real load.

Dashboards, portals, SaaS products and internal tools in Angular, React, Node.js and TypeScript, built by engineers who have shipped them for banks, telecoms and identity verification.

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ANGULARREACTNODE.JSTYPESCRIPTREAL-TIMESAAS
01 / OVERVIEW

Web applications

A web application is not a website with a login. It has state, permissions, real-time data, integrations and users who depend on it every working day. We have spent 15+ years building exactly that inside organizations where downtime makes headlines, including a capital market trading application for ČSOB delivered with Capgemini.

You work directly with the senior engineers who design the architecture and write the code. We build and operate our own SaaS in production, so stability, uptime and real users are not theory for us.

02 / APPS

Dashboards, portals, SaaS and internal tools

We build the software your business actually runs on. Customer portals that replace email threads. Internal tools that replace spreadsheets. SaaS products with billing, roles and separated tenant data. Dashboards that turn operational data into decisions.

For Slovanet we implemented the frontend architecture of Kitana, a real-time infrastructure monitoring system with alerts, diagnostics and live monitoring over WebSockets. For BearingPoint we developed a Mobility Marketplace for car rentals with advanced search and booking. For Uniters we are building a contractor management platform with its own built-in AI agent.

  • Customer and partner portals with role-based access
  • SaaS products: multi-tenancy, subscriptions, onboarding
  • Operational dashboards with real-time data
  • Internal tools and workflow automation
  • Integrations with CRMs, ERPs, payment and identity providers
03 / APPS

Angular, React, Node.js and TypeScript web app development

We pick the stack for the problem and for the team that will maintain it. Angular fits large enterprise applications with many modules and long lifetimes. React fits product teams that move fast. Node.js and TypeScript give one language across frontend and backend, which keeps small teams efficient.

On enterprise projects we have led frontend work for ČSOB, helped develop the Jumio web application for identity verification, and built most of the frontend for Asora, a wealth management platform delivered with Blocshop.

  • Angular and React frontends with typed APIs
  • Node.js backends, REST and WebSocket
  • Databases chosen for the shape of your data
  • Automated tests and CI pipelines from the first sprint
04 / APPS

Web app architecture that scales without a rewrite

Most web apps fail slowly: every feature takes longer than the last. We avoid that with clear module boundaries, typed contracts between frontend and backend, and performance work on the paths users hit most. Real-time features get proper connection handling, backpressure and reconnection, not polling in a loop.

When the product needs AI, we add it properly, from agents to custom MCP servers that connect your data to AI models. When it goes live, we can run it on our dedicated EU hardware with monitoring and backups.

HOW WE WORK

How we
work.

  1. // 01

    Free roadmap in 24 hours

    We map users, roles, data and integrations. You get a cost breakdown, a timeline projection and technology recommendations within 24 hours on business days.

  2. // 02

    Architecture and scope

    We agree on the architecture, the first release and fixed scope or milestones. Unknowns are called out early, not discovered in month three.

  3. // 03

    Weekly demos

    Every week you click through working software on staging. Priorities can shift between milestones without derailing the project.

  4. // 04

    Production deployment

    CI/CD, monitoring and backups are set up before launch. We deploy to our own EU hardware in German data centers, your cloud, or AWS when it genuinely makes sense.

  5. // 05

    Operation and growth

    After launch we fix, monitor and extend the application with the same engineers who built it.

RELATED WORK

Proof, not
promises.

CZECH REPUBLIC · BANKING · WITH CAPGEMINI

ČSOB

Led frontend development of a capital market trading application for ČSOB bank employees, built with Angular and Electron together with Capgemini.

ČSOB case study
SLOVAKIA · TELECOM

Slovanet

Frontend architecture for Kitana, Slovanet's infrastructure management system with real-time alerts, diagnostics and WebSocket live monitoring.

Slovanet case study
AUSTRIA · MOBILITY

BearingPoint

A Mobility Marketplace for car rentals with advanced search and booking on a scalable, responsive frontend.

BearingPoint case study
AUSTRIA · IDENTITY VERIFICATION

Jumio

Helped develop Jumio's web application and built its personalized face recognition software for identity verification, replacing third-party services.

Jumio case study
FAQ

Questions
answered.

A

What drives the cost of a web application?

The number of user roles and screens, integrations with external systems, real-time features, data migration and compliance requirements. A focused internal tool and a multi-tenant SaaS are very different budgets. It depends on scope, and the free roadmap gives you a number with a detailed cost breakdown, so you can decide what goes into the first release.
B

How long until we have something usable?

We aim for a first usable release early, then grow the application in milestones. The roadmap gives a timeline projection for each milestone. Weekly demos mean you see progress on staging from the first weeks, and real users can work with the first release while later features are built.
C

Can you take over or modernize an existing application?

Yes. We start with a code and architecture review, then propose incremental modernization instead of a risky big-bang rewrite when that is the better path. For Rocket Lawyer we maintained a large production app while building its successor. We apply the same discipline to web platforms.
D

Who owns the code and IP?

You do. Source code, documentation and IP for the work you pay for belong to you. Repositories can live in your own organization from the first commit. We use mainstream frameworks and document the architecture, so your in-house team or another vendor can continue the work.
E

Is the application GDPR compliant?

We design for GDPR from the start: data minimization, access control, audit logging where needed, encryption and clear retention rules. Hosting on our dedicated hardware in German data centers keeps your data in the EU. Legal responsibilities stay with you as the controller, but the technical side is covered.
F

Do you provide maintenance and support?

Yes. We offer ongoing operation: monitoring, security updates, dependency upgrades, bug fixes and feature development. You get a response within 24 hours on business days, and you talk to engineers who know the codebase. If the application runs on our EU hardware, 24/7 monitoring and automated backups are already part of the setup.
RELATED SERVICES

Also
on the table.

AMobile appsiOS and Android apps in React Native or Ionic and Angular, from first release to long-term maintenance.BDesktop appsElectron and Angular desktop apps for Windows, macOS and Linux, from trading tools to our own developer software.CCustom AISelf-hosted AI models, custom AI agents, MCP servers and AI strategy from a team that runs AI in production.
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Ready to transform
your idea?

Get a precise development roadmap in 24 hours, completely free. Tell us what you are building and a senior engineer replies, not a sales rep.

Get a free project roadmap in 24h

Response within 24 hours on business days · patrik.kelemen@crowie.io