✔️ - 🧑‍💻 GitOps Specialist 🧑‍💻
✔️ - ☁️ Cloud Native Citizen ☁️
✔️ - 📝 Everything-as-Code Promoter 📝
✔️ - 💗 Open Source Evangelist 💗
✔️ - 💻 IT-Automation Expert 💻
✔️ - 🔎 Fast Documentation Reader/Writer 🔎
✔️ - ⚙️ Mechanical Engineering (Ex)-Professional ⚙️

• robinrosenstock.com
• LinkedIn
• Xing
• Facebook

• Duration: 01.05.2021 - Present
• System administration of 75 Linux servers (Ubuntu, Suse, Red Hat, ...)
• Responsible for virtualization environments (Linux and Windows, total: approx. 300 VMs) with XEN (Citrix Hypervisor, XCP-ng, Xen Orchestra)
• Managed storage (NetApp) and other storage systems (TrueNAS)
• Introduced and managed backup solution (Commvault)
• Managed important database servers (Oracle, MySQL, Postgres)
• Administered on-premise and cloud infrastructure (Azure)
• Programmed and implemented crucial services, such as a password manager (Bitwarden)
• Involved in technical budget decisions in the six-figure range
• Point of contact for DevOps and automation queries (Git, Gitea)
• Monitored all services (Zabbix)
• Provided 3rd-level support in the aforementioned areas

• Duration: 01.07.2019 - 30.04.2021
• Assisted in all IT-related matters
• Managed data and migrated data in CRM software
• Configured universal testing machines
• Conducted measurements and evaluated test results
• Worked as a technical salesperson and Key Account Manager

• Duration: 19.11.2018 - 14.05.2019
• Implemented projects in change management
• Worked in medical device technology for Zeiss Meditec GmbH
• Collaborated closely and coordinated interdisciplinary teams

• Duration: 01.04.2018 - 18.11.2018
• Self-education in IT and job search
• Voluntary internship as a design engineer at SHW Werkzeugmaschinen GmbH in Aalen. Applied engineering solutions practically
• Part-time work for the City of Aalen: Tour guide at the Visitor Mine "Tiefer Stollen" from 2009 to 2018. Planned and conducted tours to provide informative and engaging experiences.

• Duration: 01.10.2014 - 31.03.2018
• Specialization: Applied Mechanics and Thermodynamics.
• Studium Generale: Numerical Mathematics, Heat Transfer, Emotional Psychology, Time Management

Master's Thesis | Alfing Kessler Sondermaschinen GmbH & Institute for Technical Thermodynamics TU Chemnitz

• Duration: 07.08.2017 - 09.02.2018
• Simulated and optimized the flow transition from a coaxial valve to a hydraulic cylinder while considering pressure conditions

Main Internship | Suvis GmbH (in Chemnitz)

• Duration: 29.02.2016 - 18.07.2016
• Simulated a centrifugal separator (21 weeks)

• Duration: 01.10.2010 - 30.09.2014
• Dual enrollment in general mechanical engineering (from 01.10.2012)
• Additional subjects: Technical Mechanics, Thermodynamics, Informatics, Fluid Mechanics

Bachelor's Thesis | Institute of Construction and Drive Technology, TU Chemnitz

• Duration: 01.11.2013 - 14.04.2014
• Conducted strength calculations and optimization of a crankshaft

Basic Internship | Funk Eisengießerei GmbH (in Aalen)

• Duration: 05.03.2012 - 16.03.2012

Basic Internship | Mapal KG (in Aalen)

• Duration: 12.09.2011 - 07.10.2011

• Duration: 01.08.2007 - 31.07.2010
• Information Technology Basics
• Operating Systems
• Databases
• Object-Oriented Programming
• Data Structures and Analysis
• Algorithms
• Microprocessors
• Hardware Programming

• Duration: 01.09.2001 - 01.07.2007

• GitOps (Git, Terraform, CI/CD)
• Virtualization (KVM, Xen, Proxmox, libvirt)
• System administration (Unix, SSL)
• Containerization (Docker, Kubernetes)
• Cloud (AWS, GPS, Azure, Hetzner, Nextcloud)
• Software development (Python, C++, Bash)
• Design & Simulation (CAD, FEM, CFD)
• Databases (MariaDB, Postgresql, SQL, Oracle)
• Networking (TCP, Proxy, DNS/DHCP, NTP, MTA)
• Storage & Backup (NetApp, TrueNas, Commvault)

Assessed according to the Common European Framework of Reference for Languages and in percentages:

• English: C2 / 91%
• French: B2 / 38%
• Spanish: B1 / 29%
• Russian: A1 / 12%
• Chinese: A1 / 5%

• IT Certifications: NetApp, Cisco CCNA Network Fundamentals, Typing Course
• Volunteer Work: Contribution to open-source software projects, youth coach in chess and gymnastics, involvement in political activities
• Additional Courses: Rhetoric, Time Management, Memory Training, Fitness Trainer (B), (A), (BE)

• Software Development
• Chess
• Gymnastics
• Juggling