GitHub Actions Experts in Austria

Project Tech Stack: Python, AWS, Azure, FastAPI, openai, pandas, unittest/pymock

Achievements:

• Engineered automated data extraction pipelines to transform complex Excel datasets into structured formats via LLM-driven workflows.
• Architected a generative slide-deck engine that translates natural language prompts into formatted presentation assets.
• Integrated advanced LLM capabilities with the OpenAI Response API, implementing sophisticated tool-calling and structured output logic.
• Developed and containerized scalable backend microservice using FastAPI, Docker, and OpenShift to host and serve agentic skills.

• Leading high-impact retail digital transformation focused on data integration, app integration, and next-generation customer engagement strategies.

• Teaching & presenting
• Communication
• Effectively communicate complex technical topics to non-technical audiences through lectures
• Guided non-technical students from zero knowledge to confidently understanding and applying algorithms to achieve business outcomes

• Owned day-to-day IT operations for Service Desk, Field Service, and on-call support, ensuring business continuity for a multi-site environment
• Led the transition from Lotus Notes incident tracking to ServiceNow, defining process design, workflows, roles, and reporting
• Implemented a modern telephony system with integrated reporting, enabling real-time visibility of volumes, wait times, and SLA adherence
• Launched a customer self-service portal and on-site walk-in support model to improve first-contact resolution and user experience
• Designed, documented, and rolled out SLAs, delivering targeted training for engineers and stakeholders to drive adoption and compliance
• Acted as process owner for service operations, establishing operating procedures, request/change/incident interfaces, and quality controls
• Partnered with business and IS/OT stakeholders to prioritize demand, reduce operational risk, and improve service reliability

• I am responsible for providing solution architecture and technical assistance for a migration initiative aimed at transitioning to a new core banking system.
• The project involves replacing in-house development with a commercially available off-the-shelf core banking system operated as SaaS on AWS.
• Duties encompass solution design, technical coordination, supporting development teams, and providing IT support and troubleshooting.
• Managing over 10 global vendors and partners is crucial to project success.
• Technologies: VMWare ESXi, AWS, EKS Kubernetes, Mastercard Payment Transaction Service, Avaloq, A1 Telekom Austria infrastructure, CheckPoint FW, F5, Site-to-Site VPNs, PingID, Futurae SDK, Airlock, UC4/Automic, Firebase, iOS/Android lifecycle management, AWS IAM, AWS AppStream, AWS S3, AWS Transfer Family, QlikView, OpenAPI.

Selected projects:

Kiosk platform – hospitality

• Led a 3-person team while hands-on architecting an edge computing infrastructure for over 15 self-service kiosks in Alpine hotels with unstable connectivity
• Designed a Nomad-based cluster with a WireGuard mesh network for fully automated OTA updates, even during local network outages and offline operation
• Integrated physical peripherals (hotel key card readers, thermal printers) into a containerized deployment pipeline
• Reduced on-site maintenance visits by ~40% through a resilient offline-first architecture and Prometheus-based hardware monitoring
• Tech: Nomad, Consul, WireGuard, NestJS, NextJS, Prometheus, Custom Hardware Provisioning

Multi-tenant SaaS platform – insurance claims processing

• Built and operated the Kubernetes infrastructure for a market-leading claims processing platform (acquired by an S&P 500 company) – with strict compliance and availability requirements
• Designed a multi-tenant EKS cluster with tenant isolation, enabling cost-effective single-instance hosting for multiple customers
• Implemented dynamic spot instance node pools, reducing infrastructure costs by ~20%
• Set up fully automated deployment pipelines (Terraform + GitHub Actions) for uninterrupted releases during business hours
• Tech: EKS, Terraform, GitHub Actions, Prometheus/Grafana/Loki, PHP, GraphQL

Legacy ERP integration – construction photo documentation

• Led a 2-person team in designing and implementing a real-time sync bridge between a legacy Microsoft Access ERP (without an API) and a modern mobile photo app for quality control on construction sites
• Developed a PostgreSQL pipeline with real-time listeners that extract data from 1990s Access databases – without disrupting existing workflows
• Built a resilient upload architecture with a circuit breaker pattern for unstable site connections (S3, NFS, Synology NAS)
• Saved each project manager 2–4 hours per week through automated photo sync instead of manual USB/SD card transfers
• Tech: NestJS, PostgreSQL, React Native (Expo), S3, Synology API, offline-first architecture

• Architecture and development of enterprise React 19 based documentation platform for automotive software systems
• Full-stack implementation of visualization tools & interactive diagram viewers
• Performance optimization initiatives including virtual rendering for 10,000+ node trees and Web Worker-based search functionality
• Designed and implemented modular plugin architecture enabling extensible document rendering system
• Technical consultation on Git-based architecture-as-code workflows and modern design patterns
• Ownership of critical features from design through deployment, collaborating with cross-functional enterprise teams

• 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.

• I offer project-based short and long-term freelance services for Linux and open source projects
• DevOps/SecOps/Sysadmin for Linux operating systems with a strong focus on idempotent automation and high availability
• Migration projects: on-site to cloud (and vice versa) and cloud-to-cloud migrations between providers
• Development environments: standardizing customers' development and sysadmin workstations/clients
• Digital sovereignty solutions (independent of hyperscalers): Linux desktop (Ubuntu/SUSE), mail and communications (groupware mail/calendar/contacts), file sharing and collaboration (Nextcloud)

• Collaborated on debugging and maintaining the existing codebase
• Created diagrams and visualizations of system architecture
• Contributed to reports and scientific documents

• Tech stack: Flutter/Dart, Unity3D, React, NextJS, JavaScript, TypeScript, HTML, CSS, SASS, SCSS, Tailwind, Bootstrap, Ollama, llama.cpp, LangChain, MCP, RAG, n8n, Node-Red, PlatformIO, Arduino, ESP, C, C++, Python/Django, NodeJS, C#, .NET, PostgreSQL, MySQL, MS-SQL, MongoDB, AWS, Azure, GCP, GitHub Actions, GitLab CI, Azure Pipelines, Ansible, Terraform, Docker, Postman, REST, WebSocket, Figma, Penpot, Adobe Illustrator, Adobe InDesign, VS Code, Android Studio, Visual Studio, Unity3D, Jira, Confluence, Traefik, Rclone, Authentik, pfSense, Cloudflare, Proxmox, MQTT

• Previous projects:

• n8n automation that reads incoming emails from an Office mailbox and routes them to stakeholders

• FastMCP 2 server exposing internal services via REST API to an LLM

• Terraform migration of cloud infrastructure with Azure VMs, network, blob, storage and cloud-init

• Azure Pipelines for automated testing, deployment, and artifact management

• Terraform, Ansible, Cloudflare Tunnel integration with Docker container provisioning and backups

• GitHub Actions CI/CD for Flutter app builds, testing, automated screenshots, and App Store deployment

• Flutter app with SSO, local database, backend integration, BLE synchronization

• GCP setup with Cloud DNS, App Engine, Cloud SQL

• AWS environment with EC2, S3, Route 53, ECS

• Workshops delivered on Docker, Git, Terraform, Ansible, Cloudflare, DevOps, modern software development practices

• Backend development with Python Django REST Framework, PostgreSQL, MQTT

• SSO identity provider with OIDC, OAuth, LDAP, Cloudflare Tunnels, Authentik

• Foundational work for new hardware series “tado° line X”
• Interview & onboard new iOS Engineers
• Reduce release time from 1 in 2 months to 1 per week
• Maintain and improve high user satisfaction: 4.6+ Stars
• Setup secure & encrypted Handshake with bluetooth device
• Reduce merge conflicts by setting up the project via tuist
• Convert monolithic codebase to Modules by leveraging SPM
• Use state of the art technology, like Codable & async/await
• Maintain & improve custom view accessibility
• Reduce tech debt
• Gradually convert to webviews while maintaining high quality
• Ship highly requested features like “dark mode”
• Increase unit test code coverage and rewrite parts of code base

• Further developing microservices (Go, .NET)
• Expanding gRPC APIs
• Maintaining Kubernetes clusters (AKS)
• Managing the system landscape
• Migrating Azure App Services to Kubernetes
• Creating and extending Azure Pipelines
• Developing a Go microservice to receive and send events from Azure Service Bus
• Integrating KEDA for autoscaling
• Technologies used: Go, .NET, Azure Portal, Terraform, Kubernetes, Helm, MongoDB, Jaeger, Grafana

• Web Applications
• E-Commerce solutions
• Frontend Engineering