Full Stack Developers in Austria

• AI automation roadmap for a D2C/B2B e-commerce company.
• Customer service bot with RAG over support tickets and product data, OCR pipeline for incoming invoices with writeback to Business Central, lead gen and posting automation.
• Deterministic n8n workflows with EU-hosted models.
• n8n, RAG / Mistral, Qwen/BGE embeddings / Business Central API, HubSpot, Shopify / Scaleway, S3 / Claude Code, OpenCode.

• Develop a concept for the analysis of sensor data.
• Assess implementation options, products, and pricing in Azure.
• Present and advocate the solution concept to the client.
• Implement an ETL pipeline for processing sensor data.
• Integrate BI solutions with the data repository.
• Provide documentation and support for end users.

• Implementing a real-time procedural 3D/AR eyelash configurator using Three.js and MediaPipe
• Building a full-stack web application with React.js and Python
• Consulting on app and web development

• Privacy-first, stateless e-invoice API providing AI-powered extraction, bidirectional format conversion (UBL/CII/ZUGFeRD), batch processing, and validation for German/Austrian e-invoice compliance
• Technologies: Nuxt 4, Vue 3, Nitro, TypeScript, Cloudflare (D1, R2), Stripe, OAuth, AI/LLM integration

• Custom anonymized research data analyzer, providing insights and facilitating data-driven decision-making.
• Designed and developed back- and frontend.
• Delivered end-to-end solution.
• Accelerated research timeline by 2 months.

• Built and maintained a full-featured React Native mobile app and companion web portal supporting multi-role access and real-time collaboration for service teams.
• Developed a robust NestJS backend using TypeScript, adhering to scalable microservices patterns to support a dynamic task management system.
• Designed and optimized PostgreSQL schemas, using advanced indexing and normalized data models to support patient tracking, tasks, and outcome reporting.
• Integrated Socket.IO to support real-time team communication, task status updates, and instant notifications across mobile and web platforms.
• Developed secure authentication workflows using AWS Cognito, including multi-role login, token refresh, and session timeout handling.
• Leveraged AWS S3 for secure document uploads (patient records, resource materials) with signed URLs and access control policies.
• Connected AWS SNS and SES to automate notifications for escalations, missed follow-ups, and appointment reminders.
• Engineered an admin analytics dashboard using React + Zustand for tracking user activity, case completion rates, and compliance metrics.
• Designed and implemented AI-driven features for task prioritization and patient risk classification using external API integrations.
• Established a robust CI/CD pipeline using GitHub Actions and Docker, achieving automated testing, linting, and environment-based deployments.
• Followed Agile ceremonies (daily standups, sprint planning, retros) while collaborating with QA, BAs, and PMs to deliver high-velocity features.
• Led data protection efforts ensuring full GDPR compliance, including encrypted storage, session control, and user-consent management.
• Delivered a fully responsive UI using DaisyUI-style components for mobile and tablet-first designs, achieving high Lighthouse scores.
• Reduced support tickets by 40% by implementing detailed audit logging and a self-service helpdesk system in the admin interface.

• Backend / Microservice Developer, DevOps, Test Automation
• ~100 Devs, ~10 Teams, per team: 1 PO, 1 Scrum Master, 1 UX, 1 Developer, 1 Tester
• .net core 8, 9, C#
• Microservices, Clean-Architecture, MediatR, CQRS
• GraphQL, REST, SDL
• Azure DevOps, CI / CD-pipelines, Azure-Service Bus, Rabbit-MQ, Kafka, Azure App Configuration, Azure KeyVault, Azure Kubernetes AKS
• Splunk, dashboards, custom metrics, Elastic-Search, Kibana (ELK)
• Azure SQL-Databases, Azure Cosmos DB
• Architecture decisions, event governance, COP (Backend, DevOps, FrontEnt, Test Automations)
• AI, Copilot, creating test templates
• Scheduler, Hangfire, Quartz
• Automated unit and integration tests
• Automated E2E tests, Playwright test automation, BDD, Gherkin, Cucumber
• Tracking of shipments
• GIS, GPS data, geofence, geo search, position tracking, asset positions
• Jira, Confluence
• Focus on high-performance message-oriented architecture (~xx million messages per month per service)
• Structured logging, Serilog, OTel, Splunk, Application Monitoring
• Integration of different position data sources (GPS-based data) into Azure Data Lake

• Project: E-Platform with 100k users
• Skills: Java, Spring, Spring Boot
• TechStack: Angular 18, Java 17, Spring Boot, Oracle DB, Spring Data, JPA, Hibernate, Oracle, Postgres, SQL

Jesolo Tickets – Booking platform for tickets

Concept and implementation of a multi-tenant booking platform for the online sale of bus and ferry tickets in the Jesolo region (Northern Italy). Travel agencies and event organizers embed a customizable booking widget on their own websites; travelers check live availability, book multiple passengers, and pay online in just a few clicks.

• Real-time booking: Schedules and prices come live via the transport providers' API; after payment, the tickets are automatically delivered as QR-coded PDFs – with no manual issuance.
• Provider architecture: New providers can be onboarded without code changes; an origin-based multi-tenant model with its own domain and payment configuration for each partner site makes the platform grow with every customer.
• Clean architecture: 3-tier structure (handlers → services → data store) with caching – availability checks stay fast and maintainable even with many parallel requests.

Tech stack: Go, Echo, PostgreSQL (pgx), Stripe, Web Components, Tailwind CSS, esbuild, Docker, GitLab CI, Hetzner VPS

• Fullstack Developer with expertise in Java
• Expertise in Angular16+