Senior Systems & Infrastructure Engineer | Windows/Linux, Virtualization, IT Operations, Monitoring & Automation.
Aktualisiert am 03.09.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 04.09.2026
Verfügbar zu: 100%
davon vor Ort: 100%
Infrastructure as a Service
Systemadministration
IT-Betrieb
Active Directory
VMware vSphere
PowerShell
Python
Checkmk
Grafana
Splunk
Incident Management
ITIL
Automation
TCP/IP

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

9 months
2024-01 - 2024-09

Led day-to-day infrastructure and reliability operations

Associate Principal Administrator - Infrastructure & Operations
Associate Principal Administrator - Infrastructure & Operations
  • Led day-to-day infrastructure and reliability operations for globally distributed live-service environments supporting a player ecosystem of 170M+ users.
  • Oversaw operational health across 300+ virtual machines and administration processes supporting 1,500+ Active Directory users, with focus on availability, access and controlled change.
  • Improved monitoring and operational workflows across Checkmk, Grafana and Splunk, reducing alert noise by 30% and recurring incidents by 20%.
  • Coordinated major incident response, change windows, escalation and post-incident actions while maintaining 99.9% service availability.
  • Led 8 direct reports within a 20-person operations function and strengthened runbooks, ownership models and service reliability practices.
Rockstar Games
3 years
2021-01 - 2023-12

Administered and supported Windows and Linux infrastructure

Senior Systems Administrator - Infrastructure Reliability
Senior Systems Administrator - Infrastructure Reliability
  • Administered and supported Windows and Linux infrastructure, including patching, vulnerability remediation, service recovery and production troubleshooting.
  • Built and tuned observability using Checkmk, Grafana, Splunk and AppDynamics, contributing to a 25% reduction in mean time to detect.
  • Automated recurring operational tasks with PowerShell, Python and workflow tooling, eliminating more than 600 hours of manual effort annually.
  • Supported virtualization, network/service dependencies and infrastructure changes through ITIL-aligned incident, problem and change processes.
  • Developed runbooks, operational standards and service-level indicators to improve repeatability and reliability across support teams.
Rockstar Games
1 year 5 months
2019-08 - 2020-12

Monitored and supported business-critical Windows/Linux systems

Systems Administrator - Operations
Systems Administrator - Operations
  • Monitored and supported business-critical Windows/Linux systems and services in a 24/7 enterprise operations environment.
  • Performed infrastructure triage using Checkmk, Grafana and Splunk, escalating complex faults with clear diagnostics and service-impact context.
  • Supported planned maintenance, change windows, server/service checks and recovery procedures.
  • Created and maintained technical runbooks and troubleshooting documentation to improve operational consistency.
Rockstar Games
2 years 5 months
2017-04 - 2019-08

Supported enterprise infrastructure and applications

Associate System Analyst
Associate System Analyst
  • Supported enterprise infrastructure and applications, resolving incidents involving systems, endpoints, access and service dependencies.
  • Managed user access and endpoint configuration while following ITIL incident, request and change-management practices.
  • Created SOPs and knowledge-base documentation and worked with infrastructure/application teams on root-cause investigation.
  • Supported service continuity through structured troubleshooting, escalation and operational handovers.
Itron, Inc.
2 years 3 months
2014-11 - 2017-01

Administered Windows Server environments

Systems Administrator
Systems Administrator
  • Administered Windows Server environments, Active Directory, Group Policy, RBAC and joiner/mover/leaver processes.
  • Supported Hyper-V virtualization, SCCM-based patching, endpoint administration and routine server maintenance.
  • Troubleshot DNS, DHCP, TCP/IP, authentication and Windows infrastructure issues in enterprise environments.
  • Worked within ITIL processes for incidents, service requests, changes and operational documentation.
Wipro Technologies

Aus- und Weiterbildung

Aus- und Weiterbildung

2010 - 2014

Bachelor of Business Administration (BBA) - VIT, India


CERTIFICATIONS

ITIL v3 Foundation | Scrum Master | Microsoft Azure AZ-104 / AZ-900 - in progress

Kompetenzen

Kompetenzen

Top-Skills

Infrastructure as a Service Systemadministration IT-Betrieb Active Directory VMware vSphere PowerShell Python Checkmk Grafana Splunk Incident Management ITIL Automation TCP/IP

Produkte / Standards / Erfahrungen / Methoden

PROFILE

Senior Systems & Infrastructure Engineer with 10+ years of enterprise IT experience across Windows and Linux, virtualization, Active Directory, infrastructure monitoring, incident management and automation. Most recently supported large-scale global online services at Rockstar Games, combining hands-on systems operations with reliability engineering, observability and operational process ownership. Proven impact includes 99.9% service availability, 25% faster detection, 30% lower alert noise, 20% fewer recurring incidents and 600+ hours of annual manual effort removed through automation.


CORE EXPERTISE

  • IT Infrastructure 
  • Windows Server 2012-2022 
  • Linux (RHEL/CentOS/Ubuntu) 
  • Active Directory 
  • GPO 
  • VMware vSphere 
  • Hyper-V 
  • PowerShell 
  • Python 
  • Bash 
  • Checkmk 
  • Grafana 
  • Splunk 
  • AppDynamics 
  • SCCM/MECM 
  • Microsoft 365 
  • Azure 
  • AWS 
  • Ansible 
  • Terraform 
  • Docker 
  • TCP/IP 
  • DNS 
  • DHCP 
  • VPN 
  • ITIL 
  • Incident/Problem/Change Management


SELECTED TECHNICAL PROJECTS

  • Infrastructure Home Lab - Windows Server/AD, Linux, VMware/Hyper-V/Proxmox, Checkmk, Azure Arc, microk8s and GitHub Actions for hands-on infrastructure, monitoring and automation practice.
  • IRIS - Local AI Automation Agent - Python/Bash-based local agent integrating LLM providers, speech interfaces, OS-state verification and controlled file operations; focused on automation and safe local execution.

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

9 months
2024-01 - 2024-09

Led day-to-day infrastructure and reliability operations

Associate Principal Administrator - Infrastructure & Operations
Associate Principal Administrator - Infrastructure & Operations
  • Led day-to-day infrastructure and reliability operations for globally distributed live-service environments supporting a player ecosystem of 170M+ users.
  • Oversaw operational health across 300+ virtual machines and administration processes supporting 1,500+ Active Directory users, with focus on availability, access and controlled change.
  • Improved monitoring and operational workflows across Checkmk, Grafana and Splunk, reducing alert noise by 30% and recurring incidents by 20%.
  • Coordinated major incident response, change windows, escalation and post-incident actions while maintaining 99.9% service availability.
  • Led 8 direct reports within a 20-person operations function and strengthened runbooks, ownership models and service reliability practices.
Rockstar Games
3 years
2021-01 - 2023-12

Administered and supported Windows and Linux infrastructure

Senior Systems Administrator - Infrastructure Reliability
Senior Systems Administrator - Infrastructure Reliability
  • Administered and supported Windows and Linux infrastructure, including patching, vulnerability remediation, service recovery and production troubleshooting.
  • Built and tuned observability using Checkmk, Grafana, Splunk and AppDynamics, contributing to a 25% reduction in mean time to detect.
  • Automated recurring operational tasks with PowerShell, Python and workflow tooling, eliminating more than 600 hours of manual effort annually.
  • Supported virtualization, network/service dependencies and infrastructure changes through ITIL-aligned incident, problem and change processes.
  • Developed runbooks, operational standards and service-level indicators to improve repeatability and reliability across support teams.
Rockstar Games
1 year 5 months
2019-08 - 2020-12

Monitored and supported business-critical Windows/Linux systems

Systems Administrator - Operations
Systems Administrator - Operations
  • Monitored and supported business-critical Windows/Linux systems and services in a 24/7 enterprise operations environment.
  • Performed infrastructure triage using Checkmk, Grafana and Splunk, escalating complex faults with clear diagnostics and service-impact context.
  • Supported planned maintenance, change windows, server/service checks and recovery procedures.
  • Created and maintained technical runbooks and troubleshooting documentation to improve operational consistency.
Rockstar Games
2 years 5 months
2017-04 - 2019-08

Supported enterprise infrastructure and applications

Associate System Analyst
Associate System Analyst
  • Supported enterprise infrastructure and applications, resolving incidents involving systems, endpoints, access and service dependencies.
  • Managed user access and endpoint configuration while following ITIL incident, request and change-management practices.
  • Created SOPs and knowledge-base documentation and worked with infrastructure/application teams on root-cause investigation.
  • Supported service continuity through structured troubleshooting, escalation and operational handovers.
Itron, Inc.
2 years 3 months
2014-11 - 2017-01

Administered Windows Server environments

Systems Administrator
Systems Administrator
  • Administered Windows Server environments, Active Directory, Group Policy, RBAC and joiner/mover/leaver processes.
  • Supported Hyper-V virtualization, SCCM-based patching, endpoint administration and routine server maintenance.
  • Troubleshot DNS, DHCP, TCP/IP, authentication and Windows infrastructure issues in enterprise environments.
  • Worked within ITIL processes for incidents, service requests, changes and operational documentation.
Wipro Technologies

Aus- und Weiterbildung

Aus- und Weiterbildung

2010 - 2014

Bachelor of Business Administration (BBA) - VIT, India


CERTIFICATIONS

ITIL v3 Foundation | Scrum Master | Microsoft Azure AZ-104 / AZ-900 - in progress

Kompetenzen

Kompetenzen

Top-Skills

Infrastructure as a Service Systemadministration IT-Betrieb Active Directory VMware vSphere PowerShell Python Checkmk Grafana Splunk Incident Management ITIL Automation TCP/IP

Produkte / Standards / Erfahrungen / Methoden

PROFILE

Senior Systems & Infrastructure Engineer with 10+ years of enterprise IT experience across Windows and Linux, virtualization, Active Directory, infrastructure monitoring, incident management and automation. Most recently supported large-scale global online services at Rockstar Games, combining hands-on systems operations with reliability engineering, observability and operational process ownership. Proven impact includes 99.9% service availability, 25% faster detection, 30% lower alert noise, 20% fewer recurring incidents and 600+ hours of annual manual effort removed through automation.


CORE EXPERTISE

  • IT Infrastructure 
  • Windows Server 2012-2022 
  • Linux (RHEL/CentOS/Ubuntu) 
  • Active Directory 
  • GPO 
  • VMware vSphere 
  • Hyper-V 
  • PowerShell 
  • Python 
  • Bash 
  • Checkmk 
  • Grafana 
  • Splunk 
  • AppDynamics 
  • SCCM/MECM 
  • Microsoft 365 
  • Azure 
  • AWS 
  • Ansible 
  • Terraform 
  • Docker 
  • TCP/IP 
  • DNS 
  • DHCP 
  • VPN 
  • ITIL 
  • Incident/Problem/Change Management


SELECTED TECHNICAL PROJECTS

  • Infrastructure Home Lab - Windows Server/AD, Linux, VMware/Hyper-V/Proxmox, Checkmk, Azure Arc, microk8s and GitHub Actions for hands-on infrastructure, monitoring and automation practice.
  • IRIS - Local AI Automation Agent - Python/Bash-based local agent integrating LLM providers, speech interfaces, OS-state verification and controlled file operations; focused on automation and safe local execution.

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