GitLab 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.

• 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

• Architected and deployed a highly available, multi-tenant Kubernetes platform on Google Kubernetes Engine (GKE) for business-critical microservices.
• Designed and implemented a comprehensive Infrastructure-as-Code strategy using Terraform for managing GKE clusters, networking (VPCs, Subnets), and IAM policies.
• Engineered optimized storage solutions for stateful workloads (MongoDB) using GKE PersistentVolumes, enhancing performance and data resiliency.
• Established a full-stack observability framework using Google Cloud Monitoring, Logging, Prometheus, and Grafana.

• Lead software architect in a greenfield MES project (Manufacturing Execution System / factory control system), responsible for architecture decisions, technology selection, and technical direction throughout the entire development lifecycle
• Designed and built the core framework from scratch, including several reusable Spring Boot starters (e.g., OPC-UA integration, messaging, security) that enable flexible composition of the individual system modules
• Introduced Keycloak as the central authentication and authorization system with SSO across all MES components
• Created and owns the full CI/CD pipeline covering Java, NPM and Docker – automating build, test, containerisation and deployment across all project components
• Set up the architecture documentation space in Confluence as the single source of truth for all architecture decisions, component designs, and integration patterns
• Defined and enforced naming conventions and coding standards to ensure consistency in the growing codebase
• Conducted regular code reviews for quality assurance, knowledge sharing, and adherence to architecture guidelines
• Created and maintained technology roadmaps to guide future development priorities and infrastructure investments

• Planning and implementation of IT infrastructures for clients
• Automating deployments with AWS CloudFormation and AWS CDK
• Monitoring and optimizing cloud environments and the entire IT infrastructure
• Providing technical support and troubleshooting infrastructure issues
• Collaborating with development teams on CI/CD processes

• Developed Taranis AI, an advanced open-source intelligence (OSINT) tool, leveraging artificial intelligence to revolutionize information gathering and situational analysis.
• Created cybersecurity trainings and a cyber range to provide hands-on learning experiences for SOC teams and IT management.
• Designed and implemented a hybrid cloud infrastructure using OpenStack, Terraform, and Ansible, improving the scalability and performance of the infrastructure and led the migration from an on-site only infrastructure to the hybrid cloud environment.
• Some of my current work can be found on GitHub.

• Development of a Custom Jenkins Shared Library (Groovy)

• Integration of security checks in CI/CD pipeline (Shift-Left Approach)

• Automated vulnerability scanning and remediation workflows

• GitOps-based deployments with ArgoCD

• Semantic versioning automation with Git integration

• Container lifecycle management (Build/Scan/Tag/Push)

• ArgoCD webhook integration for event-driven deployments

• Complete cluster automation with Ansible

• Bare-metal Kubernetes installation from scratch

• High-availability control plane setup

• Unified deployment system for multi-application orchestration

• Configuration management according to NIST SP 800-128

• Host security: Linux hardening, SELinux/AppArmor

• Network security: NetworkPolicies, micro-segmentation

• Application security: RBAC, Pod Security Standards

• Data security: Encryption at rest and in transit

• Defense-in-depth principles

• Certificate management with cert-manager

• Secrets management with External Secrets Operator connected to Vault

• Infrastructure monitoring with Checkmk

• Prometheus/Grafana monitoring stack

• Security event detection and logging

• Automated health checks and incident response procedures

• MetalLB load balancing for bare-metal

• Nginx ingress controller with SSL passthrough

• NetworkPolicies for security zones

• Rook-Ceph distributed storage, CNI configuration (Weave Net)

• Container & orchestration: Kubernetes (bare-metal), Docker, Helm

• CI/CD & GitOps: Jenkins (Custom Shared Library), ArgoCD, Groovy

• Automation: Ansible, Bash, Python

• Security: nftables, RBAC, NetworkPolicies, cert-manager, Vault, Sealed Secrets

• Monitoring: Checkmk, Prometheus, Grafana

• Storage & networking: Rook-Ceph, MetalLB, Nginx Ingress, Calico

• Collaboration: Jira, Confluence

• OS: Debian, Ubuntu

• Project Manager / Business Requirements Engineer
• Digital Business Developer
• Concept development and requirements management
• Process optimization
• Advertising effectiveness measurement
• Status reporting and stakeholder management to owners
• Systems: WordPress, sevDesk

• 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.

• 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

• Development of a power distribution solution for motorhomes
• Extension and adaptation of the existing prototype software for some parts of the power distribution system
• Development of missing firmware for other modules of the system
• Automation of the firmware build process through continuous integration (CI)
• Technologies used include C, Jira, Confluence, Git, GitHub, STM32, ESP32, CAN, CANopen, UART, and Zephyr

• Creating test scenarios, manual test cases and test data using boundary value analysis and equivalence classes
• Executing functional and non-functional tests (manually with Postman and web application, automated with WebDriver, JUnit and NUnit)
• Setting up, automating and maintaining the test automation framework with Java, Spring Boot, Selenium and Cucumber in IntelliJ (system, regression, smoke, UI and integration tests for web front-end and SOAP API backend interfaces)
• Automating backend NUnit test cases in Visual Studio
• Test management: developing and implementing test strategy and test plans, controlling tests, quality ownership and prioritizing risk-based tests, as well as maintaining documentation in Confluence
• Detailed analysis and quality assurance of requirements
• Creating and maintaining Jenkins pipelines, ensuring quality in build & deployment
• Close collaboration with business analysts, developers, testers and test management
• Identifying, creating and tracking defects/bugs, with thorough test documentation
• Reporting test results and defect reports
• Monitoring test processes and continuous improvements
• Reviewing test data and test results in PostgreSQL database via pgAdmin
• Supporting effort estimation and backlog prioritization
• Analyzing and debugging development code System environment: Java, JUnit, Spring Boot, Selenium, Cucumber, JavaScript, Jenkins, C#, NUnit, Postman, Bitbucket, Confluence, Jira, xRay, pgAdmin, PostgreSQL, SonarQube, Maven, IntelliJ, Visual Studio, CI/CD, SOAP API interfaces

• Infrastructure automation with Ansible, AWX, Docker/DockerCompose/Kubernetes, GitLab, Bash, Python (Ubuntu)
• Infrastructure monitoring with Icinga2
• Software development in Python
• Qemu, KVM, libvirt