Jürgen is available for hire
Hire JürgenJürgen 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 Active Directory, Microsoft 365...
SaaS Alerts
Azure Active Directory Graph API, Microsoft Graph API...
Freelance
Azure Automation, Windows PowerShell, Terraform, Ansible, Azure, Azure VDI...
Experience
- Complex Problem Solving - 20 years
- Azure DevOps - 15 years
- Azure Application Insights - 6 years
- Terraform - 5 years
- Azure Data Lake - 4 years
- Azure Kubernetes Service (AKS) - 3 years
- Azure Databricks - 3 years
- Unity Catalog - 2 years
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 Active Directory, Microsoft 365, Azure Databricks, Azure Data Lake, Unity Catalog, Azure SQL, Azure Cosmos DB, Azure Kubernetes Service (AKS), Python 3, NVIDIA CUDA, Azure Machine Learning, Packer, Linux, Azure DevOps Services, Containers, Windows PowerShell, Terraform, SQL Server Integration Services (SSIS), SQL, Cloud Migration, Migration, Microsoft Entra ID, Active Directory (AD), FastAPI, Kubernetes, Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), IT Security, Azure ML Studio, Containerization, GPU Computing, Architecture, Continuous Integration (CI), Continuous Deployment, Data Engineering, Data Modeling, Azure AI Search, Azure Logic Apps, Azure OpenAI Service, B2B, Networking, Role-based Access Control (RBAC)
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 Graph API, Azure Data Lake Analytics, Azure, Node.js, Firebase, Elasticsearch, Microservices, APIs, Google Cloud Functions, Event-driven Architecture, API/Services Architecture, Azure Active Directory, Office 365, Azure Migrate, Microsoft Entra ID, Active Directory (AD), Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), Continuous Integration (CI), Continuous Deployment, .NET, Azure Logic Apps, B2B, Networking, Role-based Access Control (RBAC)
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 Automation, Windows PowerShell, Terraform, Ansible, Azure, Azure VDI, ServiceNow, ServiceNow REST API, .NET Core, REST APIs, CI/CD Pipelines, Infrastructure as Code (IaC), MySQL, Event-driven Architecture, OpenAPI, API/Services Architecture, Azure Active Directory, Microsoft 365, Office 365, Azure Migrate, Azure Data Lake, SQL, Migration, Microsoft Entra ID, Active Directory (AD), Kubernetes, Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), IT Security, Containerization, Continuous Integration (CI), Continuous Deployment, Data Modeling, .NET, Azure Logic Apps, B2B, Networking, Role-based Access Control (RBAC)
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, Azure DevOps, Azure Bicep, Windows PowerShell, .NET 5, C#, SonarQube, Azure IoT Hub, Azure Key Vault, Azure App Service, Azure Cosmos DB, JavaScript, MySQL, API/Services Architecture, Azure Active Directory, Microsoft 365, Office 365, Azure Migrate, Microsoft Entra ID, Active Directory (AD), Infrastructure, IT Security, Continuous Integration (CI), Continuous Deployment, Azure Logic Apps, Networking, Role-based Access Control (RBAC)
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, Azure DevOps Services, Solution Architecture, Azure SQL, Azure Cosmos DB, Xamarin, React, Ember.js, Azure IoT Hub, Azure VPN, Azure Application Gateway, Azure Application Insights, Azure API Management, SonarQube, JavaScript, HTML, CSS, MySQL, Event-driven Architecture, OpenAPI, API/Services Architecture, Azure Active Directory, MigrationWiz, SQL Server Integration Services (SSIS), SQL, Active Directory (AD), Kubernetes, Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), IT Security, Architecture, Continuous Integration (CI), Continuous Deployment, Data Engineering, .NET, Azure Logic Apps, Networking, Role-based Access Control (RBAC)
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), GitLab, GitLab CI/CD, Jira, Terraform, Ansible, Argo CD, OAuth 2, Azure Application Gateway, Azure Key Vault, Rancher, Grafana, Prometheus, Jaeger, Apache Kafka, Apache ZooKeeper, PostgreSQL, JavaScript, MySQL, Event-driven Architecture, OpenAPI, API/Services Architecture, Azure Active Directory, Office 365, Packer, SQL, Migration, Active Directory (AD), Kubernetes, Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), IT Security, Windows System Administration, Windows Network Load Balancing (NLB), Containerization, Continuous Integration (CI), Continuous Deployment, .NET, Networking, Role-based Access Control (RBAC)
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: Azure SQL, Azure Web Application Firewall, Azure Websites, Azure WebJobs, Azure Virtual Networks, SharePoint, Dynamics CRM 365, MySQL, Event-driven Architecture, OpenAPI, API/Services Architecture, Azure Active Directory, Microsoft 365, Office 365, MigrationWiz, SQL Server Integration Services (SSIS), SQL, Active Directory (AD), Infrastructure, Azure SQL Databases, Azure Virtual Network (VNet), Windows System Administration, Windows Network Load Balancing (NLB), Architecture, Continuous Integration (CI), Continuous Deployment, Data Engineering, Data Modeling, .NET, B2B, Networking, Role-based Access Control (RBAC)
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 365, SAP S/4HANA Cloud, SAP Cloud for Customer (C4C), Microsoft Power BI, JavaScript, HTML, CSS, MySQL, Event-driven Architecture, OpenAPI, API/Services Architecture, Microsoft 365, MigrationWiz, Python 3, Active Directory (AD), Azure SQL Databases, Azure Virtual Network (VNet), IT Security, Windows Network Load Balancing (NLB), Architecture, Continuous Integration (CI), Continuous Deployment, Data Engineering, Data Modeling, .NET, B2B, Networking, Role-based Access Control (RBAC)
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: C#.NET, Azure Cosmos DB, Azure Websites, Azure WebJobs, Computer Vision, JavaScript, HTML, CSS, Event-driven Architecture, OpenAPI, Microsoft 365, SQL, Active Directory (AD), Azure SQL Databases, Azure Virtual Network (VNet), Architecture, Continuous Integration (CI), Continuous Deployment, Data Engineering, Data Modeling, .NET, Networking, Role-based Access Control (RBAC)
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 Blob Storage API, Azure Table Storage, Azure Virtual Machines, Azure Virtual Networks, Azure Virtual Network Gateway, Azure DevOps Services, Microsoft 365, Active Directory (AD), Azure SQL Databases, Windows System Administration, Windows Network Load Balancing (NLB), Continuous Integration (CI), Continuous Deployment, Networking, Role-based Access Control (RBAC)
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 Foundation Class (MFC) Library, Microsoft Foundation Classes (MFC), C#.NET, C#.NET WinForms, SQL, JavaScript, MySQL, API/Services Architecture, Microsoft 365, Python 3, Active Directory (AD), Azure SQL Databases, Windows System Administration, Windows Network Load Balancing (NLB), Continuous Integration (CI), Continuous Deployment, Data Engineering, Data Modeling, .NET, Networking
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 Foundation Classes (MFC), Microsoft Foundation Class (MFC) Library, SQL, JavaScript, HTML, CSS, Microsoft 365, Python 3, Active Directory (AD), Windows System Administration, Continuous Integration (CI), Continuous Deployment, Data Engineering, Networking
Experience
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.
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.
Education
1988 - 1992
Master's Degree in Physics
Graz University of Technology (Technische Universität Graz) - Graz, Austria
Certifications
FEBRUARY 2021 - FEBRUARY 2025
Microsoft Certified Azure DevOps Engineer Expert
Microsoft
Skills
Libraries/APIs
Azure Active Directory Graph API, ServiceNow REST API, OpenAPI, React, Azure API Management, Azure Cognitive Services, Azure Blob Storage API, Microsoft Foundation Class (MFC) Library, REST APIs, Node.js, Microsoft Foundation Classes (MFC)
Tools
Azure DevOps Services, Azure Active Directory B2C (ADB2C), Azure Automation, Terraform, Azure Application Insights, Azure Logic Apps, SonarQube, Ansible, Azure IoT Hub, Azure Application Gateway, Azure Key Vault, Azure App Service, Azure Kubernetes Service (AKS), Azure Machine Learning, Packer, Azure ML Studio, Azure OpenAI Service, GitLab, GitLab CI/CD, Jira, Grafana, Apache ZooKeeper, Azure Web Application Firewall, SAP Cloud for Customer (C4C), Microsoft Power BI, Azure Virtual Network Gateway, C#.NET WinForms
Languages
SQL, C#, JavaScript, HTML, CSS, Python 3, C#.NET, C++
Paradigms
Azure DevOps, Microservices, Event-driven Architecture, API/Services Architecture, DevOps, Continuous Integration (CI), Continuous Deployment, B2B, Role-based Access Control (RBAC)
Platforms
Azure, Kubernetes, Azure AI Search, Xamarin, Rancher, Apache Kafka, SharePoint, SharePoint 365, Firebase, NVIDIA CUDA, Linux
Storage
Azure Active Directory, SQL Server Integration Services (SSIS), Microsoft Entra ID, Azure Cloud Services, Azure SQL Databases, Azure SQL, Azure Cosmos DB, MySQL, Elasticsearch, PostgreSQL, Azure Websites, SAP S/4HANA Cloud, Azure Table Storage
Frameworks
Windows PowerShell, .NET 5, .NET Core, OAuth 2, .NET, Ember.js
Other
Complex Problem Solving, DevOps Engineer, Azure Virtual Networks, CI/CD Pipelines, Microsoft Graph API, Azure Data Lake Analytics, APIs, Identity & Access Management (IAM), Microsoft 365, Office 365, Azure Migrate, GitHub Actions, Azure Databricks, Azure Data Lake, Unity Catalog, Cloud Migration, Migration, Active Directory (AD), Infrastructure, Azure Virtual Network (VNet), IT Security, Windows System Administration, Containerization, GPU Computing, Architecture, Data Engineering, Data Modeling, Networking, Azure Bicep, ServiceNow, Solution Architecture, Azure VPN, Google Cloud Functions, Microsoft Purview, SecOps, MigrationWiz, Containers, Windows Network Load Balancing (NLB), Azure VDI, Argo CD, Prometheus, Jaeger, Azure WebJobs, Dynamics CRM 365, Computer Vision, Azure Virtual Machines, Infrastructure as Code (IaC), Platform Building, FastAPI
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