Jürgen Ruprechter, Developer in Vienna, Austria
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Jürgen Ruprechter

Verified Expert  in Engineering

DevOps and Back-end Developer

Vienna, Austria

Toptal member since December 28, 2021

Bio

For more than 30 years, Jürgen has worked in IT as a professional software developer, software and infrastructure architect, or data engineer—always with a strong focus on Microsoft products. Around ten years ago, he focused on the Azure cloud, gathering extensive experience with almost all Azure services. Over the last few years, Jürgen has specialized in data, DevOps, and SRE because he likes designing and operating complex cloud infrastructure the most.

Portfolio

Freelance
Azure Active Directory B2C (ADB2C), Azure, Microsoft 365, Azure Databricks...
SaaS Alerts
Azure Active Directory Graph API, Microsoft Development, Azure, Azure Design...
Freelance
Azure, Windows PowerShell, Terraform, Ansible, Azure Design, Azure VDI...

Experience

Availability

Part-time

Preferred Environment

Azure

The most amazing...

...professional experience I've had was seeing the automation I developed working as planned, protecting more than 10.000 resources in Azure during an attack.

Work Experience

Data Platform Architect

2022 - 2024
Freelance
  • Rearchitected and implemented usage of private endpoints to create a secure company-wide network set up.
  • Upgraded Datalake with 60.000+ tables from Hive Metastore to Unity Catalog in 5 Azure regions using Azure DevOps-based automation.
  • Architected Unity Catalog-based data architecture and aligned requirements with relevant stakeholders.
  • managed a small team of developers implementing IaC code.
  • Set up an automated testing framework for Powershell and ARM-based modules, as well as Terraform modules.
Technologies: Azure Active Directory B2C (ADB2C), Azure, Microsoft 365, Azure Databricks, Azure, Unity Catalog, SQL, Azure, Azure Kubernetes Service (AKS), Python, CUDA, Azure Machine Learning, Packer, Linux, Azure, Containers, Windows PowerShell, Terraform, SSIS, SQL, Cloud Migration, Migration Engineering

Azure Developer

2022 - 2023
SaaS Alerts
  • Supported development team with Microsoft Graph API knowledge. Was able to speed up development and implement best practice solutions for using Microsoft Graph API from the GCP platform.
  • Supported development team with Microsoft Purview API knowledge. Was able to speed up development and implement best practice solutions for using Microsoft Purview API from the GCP platform.
  • Supported development team with troubleshooting MFA information in Azure Active Directory. MFA information can be challenging to interpret due to different solutions still in place with some clients, although they are partially outdated.
Technologies: Azure Active Directory Graph API, Microsoft Development, Azure, Azure Design, Node.js, Firebase, Elasticsearch, Microservices Development, APIs, Google Cloud Functions, Event-driven Architecture, API, Azure, Office 365, Azure Migrate

Cloud Automation Lead

2021 - 2023
Freelance
  • Designed and developed a scalable solution integrating Azure infrastructure management with ServiceNow.
  • Implemented cost-savings measures to reduce costs by more than 60%.
  • Automated 35 manual processes to save time and increase internal customers' satisfaction.
  • Developed automation to support disaster recovery processes.
Technologies: Azure, Windows PowerShell, Terraform, Ansible, Azure Design, Azure VDI, ServiceNow, ServiceNow REST API, .NET Core, REST API, CI/CD Pipelines, Infrastructure as Code (IaC), MySQL, Event-driven Architecture, OpenAPI, API, Azure, Microsoft 365, Office 365, Azure Migrate, Azure, SQL, Migration Engineering

DevOps Lead

2021 - 2021
Freelance
  • Developed and maintained infrastructure as code in Azure Bicep for all resources for configurable environments; four were used in the end.
  • Built and maintained Azure DevOps multi-stage pipelines for automatic infrastructure deployment, including sanity tests.
  • Created and maintained CI/CD pipelines to build and deploy all five application components to all environments, including automated tests and pull requests policies.
  • Implemented SonarQube checks as part of pull request policies.
  • Worked with the test team to fully automate the test cycle.
Technologies: Azure Design, Azure DevOps, Azure Bicep, Windows PowerShell, .NET, C#, Sonarqube, Azure IoT Hub, Azure Key Vault, Azure, Azure, JavaScript, MySQL, API, Azure, Microsoft 365, Office 365, Azure Migrate

Team Lead | Development Team

2020 - 2021
Freelance
  • Redesigned the existing solution for web, mobile, and IoT devices to be deployed to Azure Cloud.
  • Increased the solution's performance by 2.000% using a microservice-based design.
  • Developed an automated cleaning planning solution based on usage information from sensors.
  • Implemented quality checks and automatic testing with four different environments.
Technologies: Azure Design, Azure, Solution Architecture, SQL, Azure, Xamarin, React.js, Ember.js, Azure IoT Hub, Azure VPN, Azure, Azure Application Insights, Azure, Sonarqube, JavaScript, HTML, CSS, MySQL, Event-driven Architecture, OpenAPI, API, Azure, MigrationWiz, SSIS, SQL

DevOps and SRE Lead

2019 - 2020
Freelance
  • Managed the infrastructure for the newly created microservice-based solution in seven environments with more than 4,000 CPUs in the production environment.
  • Automated software deployment and made zero downtime deployments possible.
  • Instructed application developers how to build services that operate reliably in Kubernetes.
  • Planned and executed the migration of existing clients from the old 3-tier application.
  • Improved the horizontal scaling strategy, so the infrastructure automatically handled spikes in load, allowing the onboarding of 40,000 users for one client without any problems.
Technologies: Azure Kubernetes Service (AKS), Git, GitLab CI/CD, Jira, Terraform, Ansible, Argo CD, OAuth, Azure, Azure Key Vault, Rancher, Grafana, Prometheus, Jaeger, Apache Kafka, Apache ZooKeeper, PostgreSQL, JavaScript, MySQL, Event-driven Architecture, OpenAPI, API, Azure, Office 365, Packer, SQL, Migration Engineering

Solution Architect and Senior Back-end Developer

2018 - 2019
Freelance
  • Created an integrated solution to support all phases of real estate development.
  • Developed a hybrid solution with integration of the existing on-premise solution.
  • Modernized application environments to facilitate a more agile development process.
  • Extended SharePoint Online to act as the central repository for all projects.
Technologies: SQL, Azure Web Application Firewall, Azure, Azure WebJobs, Azure, SharePoint Design, Dynamics CRM 365, MySQL, Event-driven Architecture, OpenAPI, API, Azure, Microsoft 365, Office 365, MigrationWiz, SSIS, SQL

Solution Architect and Senior Developer

2017 - 2018
Freelance
  • Developed a new company-wide reporting hub with self-service capabilities.
  • Integrated SAP S4/HANA data to enable ad-hoc reporting.
  • Used Azure Cognitive Services to extract information from documents and tag them accordingly to improve document handling.
  • Reduced time used to generate monthly reports by 80%.
Technologies: Azure Cognitive Services, SharePoint Development, SAP S/4HANA Cloud, SAP Cloud for Customer (C4C), Business Intelligence Development, JavaScript, HTML, CSS, MySQL, Event-driven Architecture, OpenAPI, API, Microsoft 365, MigrationWiz, Python

Solution Architect and Senior Developer

2013 - 2017
Freelance
  • Developed a sensor management platform to store and analyze car parking data.
  • Built an automated sensor calibration and provisioning solution.
  • Used OpenCV to analyze image content and provide automatic image classification.
Technologies: .NET, Azure, Azure, Azure WebJobs, Computer Vision, JavaScript, HTML, CSS, Event-driven Architecture, OpenAPI, Microsoft 365, SQL

Senior DevOps Engineer

2010 - 2013
Freelance
  • Automated CI/CD processes in the cloud and moved code from SVN to Git.
  • Build tools to a provisioning infrastructure in Azure in reliable and repeatable ways.
  • Acted as the central DevOps team lead for approximately 120 developers.
Technologies: Azure, Azure, Azure, Azure, Azure Virtual Network Gateway, Azure, Microsoft 365

Solution Architect and Senior Back-end Developer

1998 - 2009
Freelance
  • Developed leading property management software in Austria as a client-server 3-tier application for Windows. The application supported more than 20.000 users in their daily work.
  • Implemented many customer-specific modifications for big clients like the government of Austria and Austria's biggest bank.
  • Provided administrators for clients with fully automated installation procedures.
Technologies: C++, Microsoft Development, Microsoft Development, .NET, C#, SQL, JavaScript, MySQL, API, Microsoft 365, Python

Full-stack Developer

1991 - 1998
Freelance
  • Analyzed customer requirements and helped modify and enhance the existing standard software for financial tasks.
  • Helped migrate an MS-DOS-based solution to Windows using MFC 4.2.
  • Implemented an updated mechanism over the internet and dial-up connections.
Technologies: C++, Microsoft Development, Microsoft Development, SQL, JavaScript, HTML, CSS, Microsoft 365, Python

Cloud Automation Leadership

The customer is one of the leading energy companies in Europe and is currently moving its IT landscape to the cloud.

My responsibility was to ensure fast, reliable, and compliant provisioning of resources in a cloud environment through automation and support other teams with cost-saving initiatives.

Databricks Unity Catalog

I collaborated with Databricks Unity Catalog, a company-wide offering for data governance. I architected and executed a migration from 100+ Databricks workspaces and 60.000+ tables from Hive Metastore to Unity Catalog without interruption of service for internal customers.
1988 - 1992

Master's Degree in Physics

Graz University of Technology (Technische Universität Graz) - Graz, Austria

FEBRUARY 2021 - FEBRUARY 2025

Microsoft Certified Azure DevOps Engineer Expert

Microsoft

Libraries/APIs

Azure Active Directory Graph API, ServiceNow REST API, OpenAPI, React.js, Azure, Azure Cognitive Services, Azure, Microsoft Development, REST API, Node.js, Microsoft Development

Tools

Azure, Azure Active Directory B2C (ADB2C), Azure, Terraform, Azure Application Insights, Sonarqube, Ansible, Azure IoT Hub, Azure, Azure Key Vault, Azure, Azure Kubernetes Service (AKS), Azure Machine Learning, Packer, Git, GitLab CI/CD, Jira, Grafana, Apache ZooKeeper, Azure Web Application Firewall, SAP Cloud for Customer (C4C), Business Intelligence Development, Azure Virtual Network Gateway, C#

Languages

SQL, C#, JavaScript, HTML, CSS, Python, .NET, C++

Paradigms

Azure DevOps, Microservices Development, Event-driven Architecture, API, DevOps

Platforms

Azure Design, Xamarin, Rancher, Apache Kafka, SharePoint Design, SharePoint Development, Firebase, CUDA, Linux

Storage

Azure, SSIS, SQL, Azure, MySQL, Elasticsearch, PostgreSQL, Azure, SAP S/4HANA Cloud, Azure

Frameworks

Windows PowerShell, .NET, .NET Core, OAuth, Ember.js

Other

Complex Problem Solving, DevOps, CI/CD Pipelines, Microsoft Development, Azure, APIs, Identity & Access Management (IAM), Microsoft 365, Office 365, Azure Migrate, GitHub Actions, Azure Databricks, Azure, Unity Catalog, Cloud Migration, Migration Engineering, Azure Bicep, ServiceNow, Solution Architecture, Azure VPN, Google Cloud Functions, Microsoft Purview, SecOps, MigrationWiz, Containers, Azure VDI, Argo CD, Prometheus, Jaeger, Azure WebJobs, Azure, Dynamics CRM 365, Computer Vision, Azure, Infrastructure as Code (IaC), Platform Building

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