Freelancer profile translated to English.
Back to original languageAbout Alexander
I develop custom business software, apps, and backend systems for companies, startups, and self-employed individuals.
My focus is on performant APIs, scalable backend architectures, and modern mobile applications that digitize and automate real business processes.
I support companies in efficiently implementing internal tools, platforms, or customer applications – from technical conception to productive deployment.
Typical projects include:
• Development of modern REST APIs (Python / FastAPI)
• Business and enterprise apps (Flutter)
• Custom software solutions instead of modular systems
• Automation of business processes
• Backend architecture & system integration
• Extension of existing applications
I have independently conceived and implemented several of my own software products and platforms, including business apps, SaaS systems, and scalable web and mobile applications. This means I bring not only programming experience but also an understanding of product structure, performance requirements, and long-term maintainability.
My working style:
• structured and clean architecture
• clear communication
• long-term maintainable code
• GDPR-compliant implementation possible
• direct collaboration without agency structure
I work on a project basis or flexibly support teams in backend, API, or app development.
German
Native or bilingual
Remote only
Primarily works remotely
Experience
- GastroTalent24FullstackRESTAURANTS AND FOOD SERVICEFebruary 2026 - May 2026 (3 months)Monheim am Rhein, GermanyFounding and development of GastroTalent24 – a specialized job platform for the gastronomy industry.
- Fullstack development of a scalable recruiting platform
- Building a system for direct communication (chat) between companies and applicants
- Development of a conversion-optimized dashboard for companies
- Implementation of a targeted matching system for qualified applicants
- Integration of payment and affiliate structures
- Focus on mobile-first UX and fast processes
- PrismaTech AIFullstack Developer for Business Software & AppsJuly 2025 - Today (11 months)Monheim am Rhein, GermanyAt PrismaTech AI, I develop custom software solutions, business apps, and backend systems for digital platforms and enterprise applications.Conception, development, and operation of several proprietary software products and SaaS platforms, including mobile applications, web platforms, and scalable backend architectures.Implemented projects include, among others:• Development of a secure messenger system (BIRX)• Inventory and business app (Itemaro)• QR and tool systems (NexQR)• Job platform & web platforms (GastroTalent24)• SaaS and learning platforms (Skill-Orbit)Focus areas:• Backend & API development with Python / FastAPI• Mobile app development with Flutter• System architecture & database design• Automation and business software• Deployment, maintenance, and further developmentIndependent implementation of complete software products from architecture planning to productive application.
- BSM Onlinehandel UGCEOFebruary 2023 - Today (3 years and 4 months)Monheim am Rhein, GermanyProgrammed the Itemaro inventory app for AndroidProgrammed the NexQR QR scanner and generator for AndroidAdditionally, website development for regional real estate agents
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Education
- Retail SalespersonREWE / IHK Retail Trade Apprenticeship2015Ausbildung zum Kaufmann im Einzelhandel mit Schwerpunkt betriebliche Prozesse, Kundenmanagement und wirtschaftliche Grundlagen. Parallel dazu autodidaktische Spezialisierung im Bereich Softwareentwicklung, Backend-Systeme und App-Entwicklung mit Fokus auf praktische Projektumsetzung und eigenständige Entwicklung mehrerer Softwareprodukte und Plattformen.