Python Backend & React Frontend Development
Backend & Architecture
Expertise: Python, PostgreSQL, RESTful APIs, system architecture
Open Source: Maintainer of Morepath, Django Mezzanine, Overmind
Experience: 12+ years with Python, complex business logic, multi-tenant systems
Frontend & Mobile
Expertise: React, TypeScript, PWA, mobile development
Specialization: Overmind, state machines, fast UIs, Excel processing
Focus: Intuitive interfaces, mobile-first design, data transformations
Service and Logistics Group
Complex frontend system for rail cargo organization with integrated chat, comprehensive admin panel with permission logic, and real-time workflow management.
Internal Project
Workflow management system for car wash and service businesses. Appointment scheduling, service tracking, and business operations optimization.
Internal Project
Platform for artists to create individual shops and sell products. Shop management, payment integration, order processing with comprehensive type safety.
Python backends with Morepath or Django. RESTful APIs and database design with PostgreSQL, MySQL or SQLite.
React applications with TypeScript, Overmind state management, PWA development, mobile-first design.
Complete web applications from database design to responsive UI. Clean architecture with backend-frontend separation.
Scalable applications for multiple users or organizations. Secure data isolation and permission management.
Business process automation, state machines, real-time updates, and complex operational logic.
Legacy code refactoring, type hints, CI/CD implementation, test coverage, and architecture improvements.
Available for web application development, API design, and system architecture.
Remote work from Poland (CEST timezone) | Working with clients worldwide