Marcus Lindemann
IT Manager | Infrastructure Operations & Systems Modernization
Cologne
Professional Summary
Experienced IT Manager with a solid background in infrastructure engineering, operational governance, and service management within mid-sized German enterprises. Demonstrates a pragmatic approach to aligning technical capabilities with business workflows, optimizing vendor relationships, and leading cross-functional support and systems teams.
Professional Experience
Rheintal Logistik Systeme GmbH
Cologne, Germany
IT Manager
Mar 2021 – Present
- Oversee daily IT operations, infrastructure, and user support services across 4 regional operating sites, leading an in-house team of 14 technical specialists.
- Direct an annual IT operating and capital expenditure budget of 2.4M EUR, achieving 11% operational savings through vendor consolidation and contract renegotiations.
- Standardized IT service delivery around ITIL practices, reducing average incident mean time to resolution (MTTR) by 28% over an 18-month period.
- Supervised the rollout of multi-factor authentication and endpoint detection systems in compliance with ISO/IEC 27001 requirements.
Veloce Werkzeuge AG
Leverkusen, Germany
IT Infrastructure Manager
Aug 2016 – Feb 2021
- Managed core on-premises data center operations and network connectivity supporting 650 administrative and manufacturing personnel.
- Spearheaded the migration of primary enterprise resource planning workloads to a hybrid cloud architecture, minimizing production downtime to scheduled windows.
- Led a team of 8 systems administrators and helpdesk technicians, instituting structured shift handovers and ticket escalation protocols.
- Governed external service level agreements with telecom, hardware maintenance, and cloud software providers.
Senior Systems Administrator
Apr 2012 – Jul 2016
- Administered Windows Server environments, Active Directory forests, VMware vSphere virtualization clusters, and SAN storage arrays.
- Implemented automated backup and disaster recovery processes, decreasing recovery time objectives (RTO) from 12 hours to under 3 hours.
- Coordinated office network enhancements including structured cabling and Cisco switch deployments across two administrative buildings.
Education
University of Cologne
Diplom-Wirtschaftsinformatiker · Information Systems (Wirtschaftsinformatik) · Cologne, Germany · 1.7 · Oct 1999 – Sept 2004
Focus areas included enterprise architecture, business process engineering, and distributed computing systems.
Completed thesis on service level management frameworks for distributed logistics networks.
Key Projects
Enterprise Telephony and Collaboration Modernization
Feb 2023 – Nov 2023
- Architected and delivered the replacement of obsolete PBX telephone hardware with a unified cloud-hosted VoIP solution across 4 corporate facilities.
- Trained 350 end users and technical administrators, transitioning operational support seamlessly on schedule without disruption to dispatch desks.
Core Competencies
IT Operations Management
IT Service Management (ITSM)
Infrastructure Modernization
Budgeting & Capex/Opex Control
Vendor Management
Hybrid Cloud Architecture
Information Security & Compliance
Disaster Recovery & BCP
Active Directory & Identity Management
Team Leadership & Mentoring
Languages
German
C2
English
C1
Certifications
ITIL 4 Managing Professional
AXELOS · May 2024
Certified Information Security Manager (CISM)
ISACA · Sept 2025
Volunteer Work
Kölner Tafel Förderkreis
Cologne, Germany · Jan 2019 – Present
- Volunteer Technical Advisor
- Advise chapter leadership on internal digital tooling, database hygiene, and safe IT practices for member records.