# llms.txt

> Stefan Georg Rath - Full-Stack Developer & DevOps Engineer
> Website: https://sg6.eu
> Location: Vienna, Austria
> Experience: 15+ years in IT, self-employed since 2014

## About

Stefan Rath is a full-stack software engineer and DevOps consultant based in Vienna, Austria, specializing in modern web applications and cloud-native infrastructure. He serves clients across the DACH region (Austria, Germany, Switzerland), from startups to international corporations, with a particular focus on helping SMEs modernize their digital infrastructure.

### Education & Certifications
- MSc in IT Security - FH Technikum Wien
- BSc in Business Informatics - FH Technikum Wien
- Certified Kubernetes Application Developer (CKAD)
- AWS Certified Cloud Practitioner

### Professional Background
- Self-employed IT consultant since 2014 (full-time since 2016)
- 15+ years of professional IT experience
- Clients range from early-stage startups to enterprise corporations
- Focus on long-term client relationships (3-6+ month engagements)

## Services

### Web Development
Full-stack web application development with focus on:
- Enterprise web applications (production environments, ERP systems, management systems)
- Progressive Web Apps (PWA) - offline-capable, app-like experiences
- Angular development & frontend architecture (including AngularJS migrations)
- Full-stack solutions from UI to database

Key capabilities:
- User-friendly interfaces that accelerate workflows
- Custom business applications tailored to specific processes
- Cross-platform web and mobile applications
- Performance optimization and UX-centered development

### DevOps & Cloud Engineering
Modern cloud solutions specifically designed for SMEs and small IT teams:
- CI/CD pipeline automation (reducing manual work, enabling rapid releases)
- Efficient cloud solutions with Infrastructure as Code
- Container & Kubernetes deployments (auto-scaling, environment parity)
- Cloud migration from legacy server infrastructure
- Serverless container deployments
- Complete DevOps process implementation

Benefits:
- Reduced operational costs
- Increased system reliability
- Freed-up development team capacity
- Scalable infrastructure that grows with business needs

## Technology Stack

### Frontend Development
- Angular 19 (all versions, including AngularJS 1.x upgrades)
- TypeScript, JavaScript (ES6+)
- HTML5, CSS3, SCSS
- Web Components, Lit
- Progressive Web Apps (PWA)
- REST API integration

### Backend Development
- Node.js (JavaScript & TypeScript)
  - NestJS framework
  - Express.js
  - Microservices architecture
  - RESTful APIs
  - Server-Side Rendering (SSR)
- PHP 8 (including PHP 5.x upgrades)
  - Laravel framework
  - WordPress (custom development & API)
- Java
  - Java 8, Java 21
  - Spring Boot
  - REST APIs

### Database Technologies
- SQL: MySQL, PostgreSQL
- NoSQL: MongoDB, Redis
- ORM frameworks
- GraphQL

### DevOps & Cloud
- Kubernetes (CKAD certified)
  - Deployments, Services, Ingress
  - Helm Charts
  - Container orchestration
- CI/CD Automation
  - GitLab CI
  - GitHub Actions
  - ArgoCD
  - Jenkins
- Infrastructure as Code
  - Terraform (multi-cloud)
  - State management
  - Cloud provider integration
- Docker containerization
- Cloud Providers
  - AWS Cloud
  - Scaleway Cloud
  - Vultr Cloud

### Additional Technologies
- AI/ML Environments - scalable infrastructure for AI systems
- Monitoring & Observability tools
- Message Queues
- E-Commerce integrations (WooCommerce, custom solutions)

## Selected Projects

### 2024-2025: UX & Frontend Consultant for Industry 4.0
Migration of industrial data collection platform from Angular 8 to Angular 19. Implementation of custom form fields and comprehensive UX optimizations for improved user productivity and data visualization.

### 2025: PWA for Operational Data Calculation
Conception and implementation of Progressive Web App with freemium model for industrial clients. Development of robust calculation logic using Vanilla TypeScript, Vite, and PHP backend.

### 2025: WordPress Plugin with Microservice for Translation Agency
Integration of automated OCR-based text analysis in WordPress with connected e-commerce functionality. Scalable microservice architecture with Node.js, message queue, and PostgreSQL.

### 2024: Kubernetes Cluster for Enterprise Applications
Implementation of high-availability Kubernetes infrastructure on Vultr Cloud with automated Terraform provisioning. Configuration of CI/CD pipelines for consistent deployment processes.

### 2024: Cloud Migration of E-Mail Service for E-Commerce
Migration of business-critical email service to AWS Cloud. Implementation of serverless Lambda architecture for cost and scalability optimization, integration with legacy PHP system.

### 2022-2024: Productivity Tracking for Automation Technology
Frontend development of production KPI tracking app with eCharts visualizations and scalable Angular component architecture for capturing and displaying critical metrics.

### 2022: SaaS for Certification Processes
Development of micro-app platform for digital certification processes with standardized microservices and APIs for maximum scalability using NestJS, Angular, and PostgreSQL.

### 2020-2021: Management System for Goods Management
Frontend development of business-critical warehouse and product management system. Backend service integration via RESTful APIs and implementation of automated E2E tests.

### 2019-2020: B2B Portal for Insurance Industry
Migration of legacy AngularJS application to modern Angular architecture for insurance portfolios and damage reports. Implementation of scalable micro-frontend architecture with microservices.

### 2018-2019: Sales Tool for Transport Industry
Development of hybrid sales system for online sales and point-of-sale with Angular and Electron. Successful AngularJS-to-Angular upgrade and middleware interface implementation with Node.js.

## Working Approach

### Analysis & Planning
Understanding specific requirements and long-term goals to develop tailored software solutions that meet individual needs.

### Efficient Implementation
Broad technical expertise across multiple technology domains ensures goal-oriented project execution - either independently or in collaboration with client specialists.

### Continuous Optimization
Sustainable and future-proof software architecture that flexibly adapts to dynamic and constantly changing requirements.

### Long-term Support
Commitment extends beyond implementation - comprehensive ongoing support and dedicated maintenance to ensure client satisfaction.

## Value Proposition

### For SMEs & Small IT Teams
- Low-maintenance solutions that reduce operational overhead
- Scalable systems that grow with business needs
- Cost-effective cloud infrastructure
- Freed-up team capacity for core business tasks
- Comprehensive technical expertise from one source

### Technical Excellence
- 15+ years of modern technology experience
- Adaptable & versatile (startup to enterprise)
- Innovation focus combined with user-centered development
- Long-term engagement and continuous optimization

### Development-to-DevOps Bridge
Unique combination of full-stack development expertise and DevOps knowledge - helps traditional mid-sized companies modernize legacy applications while implementing professional deployment processes.

## Recent Activities

### Angular Vienna Meetup
Speaker at Angular Vienna Meetup on "Enhancing User Experience with Angular Guards and Interceptors"
Link: meetup.com/angular-vienna

## Contact Information

**Primary Contact:**
- Phone: +43 678 / 122 08 63
- Email: contact@sg6.eu
- LinkedIn: https://www.linkedin.com/in/stefan-georg-rath/

**Location:**
Vienna, Austria (serving DACH region)

**Availability:**
Open for new projects with flexible engagement models:
- Enterprise clients: Long-term engagements (3-6+ months preferred)
- SMEs: Shorter project durations and consulting engagements available

## Target Clients

Primary focus on:
- Small to medium-sized enterprises (SMEs) in DACH region
- Companies with small IT teams needing external expertise
- Traditional businesses requiring modernization and digitalization
- Startups requiring scalable technical foundation
- Enterprises needing specialized Angular or Kubernetes expertise

Industries served:
- Industrial automation and manufacturing
- E-commerce and retail
- Insurance and financial services
- Media and publishing
- Transportation and logistics
- SaaS providers

## Keywords

Software Engineer, Full-Stack Developer, DevOps Engineer, Cloud Consultant, Angular Expert, Kubernetes Specialist, Web Development Vienna, IT Consultant Austria, Software Modernization, Legacy Migration, CI/CD Automation, Infrastructure as Code, Progressive Web Apps, Enterprise Applications, Microservices Architecture, Cloud Migration, DACH Region IT Services