23.04.2026 aktualisiert
100 % verfügbar
Senior Full-Stack Engineer | React · TypeScript · .NET · Python | 13+ Years
Teningen, Deutschland
Teningen +50 km
Bachelor of EngineeringÜber mich
Senior Full-Stack Engineer with 13+ years experience in React, Next.js, TypeScript, Node.js, .NET and Python. Focus on SaaS architecture, micro-frontends, multi-tenant systems and AI/LLM integration. Currently building 3 production SaaS products. EU work authorization, available immediately.
Skills
PythonNode.jsNext.jsTypeScript.NET CoreReact.jsBackendReact NativeFront End
React Development
Full Stack Engineering
AI / LLM Integration
TypeScript Development
Cloud Architecture / DevOps
Backend Development
Database Management
Micro-Frontend Architecture
Mobile Development
Advanced experience in React-based applications, including Next.js, Redux, TypeScript, and modern frontend architecture patterns for scalable web platforms.
Full Stack Engineering
Full-stack development across frontend and backend systems using React, Node.js, .NET, and Python, including production SaaS and enterprise applications.
AI / LLM Integration
Practical implementation of AI features using OpenAI, Claude, and Gemini APIs, including multi-LLM systems, RAG-based solutions, and workflow automation.
TypeScript Development
Extensive experience with TypeScript in enterprise-scale applications, focusing on type safety, maintainability, and large-scale frontend architectures.
Cloud Architecture / DevOps
Experience with cloud-based deployment and infrastructure using Azure, AWS, Docker, and CI/CD pipelines (GitHub Actions).
Backend Development
Backend development using Node.js, Express.js, Python (FastAPI), .NET 8, and ASP.NET Core for API-driven and service-based architectures.
Database Management
Design and implementation of data models and storage systems using PostgreSQL, Redis, MongoDB, and SQL-based solutions.
Micro-Frontend Architecture
Hands-on experience with micro-frontend systems, including Module Federation and scalable frontend architecture design for multi-team environments.
Mobile Development
Cross-platform development using React Native for iOS, Android, and Windows applications.
Sprachen
DeutschGrundkenntnisseEnglischverhandlungssicherRussischMuttersprache
Projekthistorie
SmartWMS (smartwms.one) — Multi-tenant SaaS (Warehouse Management System)
InvoCore (invocore.eu) — German E-Invoicing SaaS
Nootee (nootee.com) — AI SaaS Platform
– Designed and implemented multi-tenant SaaS architecture
– Built full-stack system using React, TypeScript, .NET 8, PostgreSQL
– Developed RBAC authorization with granular permissions
– Implemented real-time updates using SignalR
– Integrated Stripe payments (SEPA and card payments)
– Designed async processing system for background workflows
– Set up CI/CD pipelines using Docker and GitHub Actions
InvoCore (invocore.eu) — German E-Invoicing SaaS
– Built platform compliant with XRechnung / ZUGFeRD
– Designed multi-tenant backend (Python, FastAPI, Redis, Celery)
– Implemented invoice processing and export workflows
– Developed GDPR-compliant architecture for EU regulations
Nootee (nootee.com) — AI SaaS Platform
– Built AI-powered content automation platform
– Integrated multiple LLMs (OpenAI, Claude, Gemini)
– Designed RAG-based knowledge system
– Implemented workflow automation for content pipelines
Enterprise SaaS platform used by 30,000+ healthcare professionals worldwide.
– Worked in a core engineering team delivering complex product features across the platform
– Participated in sprint planning and technical discovery with Tech Lead, Architect, Scrum Master, QA, and Product Owner
– Contributed to architecture decisions and estimation of complex features prior to implementation
– Implemented end-to-end high-complexity features across frontend and system layers
– Supported distribution of technical tasks within the team and assisted engineers with implementation decisions
– Acted as technical point of contact for multiple frontend and micro-frontend modules
– Contributed to cross-team micro-frontend architecture used across multiple product areas
– Participated in system-wide frontend refactoring and architectural evolution
– Contributed to shared React component system (Storybook-based design system) used across teams
– Supported onboarding and mentoring of junior engineers through hands-on guidance and code reviews
– Improved frontend performance and delivery efficiency (bundle size -40%, delivery speed ~+50%)
– Built real-time UI systems for live gaming platforms
– Optimized frontend performance for streaming environments