App Development for SMBs & Startups

Listen. Understand. Deliver.

I help small and medium-sized businesses, as well as startups, quickly transform their digital product ideas into market-ready apps – without an agency, without detours.

From concept to MVP or full-stack product, I support you pragmatically, structured, and on equal terms – remotely or on-site in Hamburg.

SMBs

Custom app solutions – even without your own IT department

Startups

Fast MVPs & prototypes – focused and cost-effective

Agencies

Flutter expertise & capacity extension – seamlessly integrated

Schedule Free Initial Consultation

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What I build for you

Flutter App Development

Cross-platform apps for iOS, Android, Web & Desktop – with a single codebase, responsive design, and modern architecture. Performant, maintainable, and future-proof.

MVPs & Prototypes

Fast, implementable solutions for testing ideas – ideal for startups and product teams that want to validate early what really works.

Backend with Serverpod or Firebase

Integrated backends with real-time functionality, authentication, database integration, and payment processing – tailored for your project.

Full Control – No Vendor Lock-in

With Serverpod, you host your backend yourself: maximum control over data, infrastructure, and costs. Completely independent of providers like Firebase or AWS.

API Integration & Platform Services

Seamless integration of services like Google APIs, Mollie, OpenStreetMap, OAuth 2, Firebase, or Sentry – stable, secure, and well-thought-out.

DevOps & Code Quality

Clean code, strong architecture, automated tests, GitHub Actions, and Docker-based deployments – for robust apps with a future.

Project Highlight

Yourny Travel & Leisure

Full-Stack mobile app development with Flutter and Serverpod for a travel platform – including booking logic, payment integration, real-time features, and DevOps setup.

Technologies Used

Flutter

Dart

Sentry

Firebase

Serverpod

PostgreSQL

GPT

Docker

Push Notifications

Localization

Frontend / App

• Flutter/Dart Development Mobile app development with BLoC state management
• Backend & Cloud Services Serverpod integration, Firebase (Auth, Analytics, Remote Config), and real-time communication
• Mobile Platform Expertise Deep linking, push notifications, and platform-specific integrations
• UI/UX & Localization Custom design system, animations, localization, and OpenStreetMap integration
• DevOps & Quality Code generation, integration testing, and error tracking with Sentry

Backend / Server

• Dart & Serverpod Backend development with real-time functionality
• PostgreSQL & External APIs Database management with 3 million hotel datasets, Google Places, Mollie (payments), and Firebase authentication
• Travel Industry Expertise Hotel booking workflows, multi-participant vacation planning, payment processing, and accommodation search systems
• DevOps & Cloud Docker containerization, VPS deployment, environment management, and Sentry monitoring
• Performance & Scalability Database optimization, parallel processing, and large-scale data synchronization for hotel information

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Who I am

I'm Paul – a passionate Flutter developer with an entrepreneurial spirit. I know the challenges of startups because I'm building one myself.

That's why I think entrepreneurially in every project:

What brings the greatest value to the user – and not just to the code?
How do we get to the goal quickly – without incurring technical debt?

My focus is on Flutter and Serverpod – I use them to develop complete, scalable MVPs and full-stack applications from a single source. I work pragmatically, remotely, and reliably – always on equal terms.

Reliability & Speed

You don't get an agency structure, but direct implementation – with experience, empathy, and focus.

Full-Stack from a Single Source

Frontend with Flutter, backend with Serverpod or Firebase – including DevOps, testing & monitoring.

Business Understanding

I understand how product development works – and help you build digital products with real added value.

Remote or in Hamburg

I work remotely – but upon request also on-site in Hamburg or surrounding area.

Skills

Favorite

Flutter

Expert

Favorite

Serverpod

Expert

Favorite

Dart

Expert

Favorite

BLoC

Expert

Favorite

Firebase

Expert

Docker

Proficient

Git

Proficient

VPS

Proficient

Databases

Proficient

Testing

Proficient

Product

Proficient

MVP

Proficient

Prototyping

Proficient

AI

Proficient

Software Architecture

Proficient

Scrum

Proficient

Java

Proficient

TypeScript

Proficient

Astro

Proficient

SolidJS

Proficient

Angular

Proficient

Redux

Proficient

NestJS

Proficient

Node.js

Proficient

Let's talk about your project

You have an app idea, an ongoing project, or just a few open questions? I bring structure, think along, and implement – without empty promises, with technical depth and a clear roadmap.

Email

Direct contact for detailed project discussions

Send message

LinkedIn

Professional network and updates about my work

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GitHub

Open source projects and code showcase

View code

What you can expect from me

Fast Response

Response within 24 hours

Free Consultation

Initial consultation without obligation

Technical Expertise

Modern technologies & best practices