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Martin Bausewein

IT Architect

Martin Bausewein
Schwetzingen, Germany

Experience

Jun 2025 - Aug 2025
3 months
Switzerland

IT Architect

NDA (defense industry)

  • assessment of a modernization concept for IT infrastructures including client workstations
  • development of an alternative concept focusing on data sovereignty and reducing provider dependencies
  • selection of suitable alternative open-source products and solutions
  • designing a proof of concept approach for step-by-step evaluation of the options
Nov 2024 - Dec 2024
2 months
Leinfelden-Echterdingen, Germany

IT Architect

Daimler Truck AG

  • building an application stack in a VPC (IBM Cloud) for full separation from Mercedes-Benz infrastructures
  • setting up and switching VPN connections, including network and firewall configuration
  • rebuilding RHEL8 VMs with departmental application (including nginx, Traefik proxy for OIDC) and Oracle database (multi-stage)
  • optimizing and hardening components: hardening all components; monitoring stack with notifications (Telegraf, InfluxDB, Grafana); IDS/IPS stacks (firewall, fail2ban, ClamAV, Lynis); COS backup
Jun 2024 - Sep 2024
4 months
Mannheim, Germany

Transition Manager

Bilfinger SE

  • interim reinforcement of the project team for WAN/LAN outsourcing worldwide for around 700 sites
  • responsible for vendor management in WAN/LAN discovery and for planning transition and migration in WAN, LAN, service management, and NOC
Apr 2024 - Present
1 year 11 months
Karlsruhe, Germany

Project Manager

Planta GmbH

  • consulting, analysis, and design to adapt standard planning systems to individual customer requirements
  • successful implementation of multi-project and portfolio management systems in both traditional and agile environments
  • leading the rollout of a hybrid planning system for the Baden-Württemberg police
  • overseeing a proof of concept (PoC) to evaluate planning systems for the Baden-Württemberg Ministry of the Interior
Jul 2022 - Dec 2023
1 year 6 months
Osnabrück, Germany

Transition Manager

cunova GmbH

  • lead architect for non-SAP applications and security in a carve-out
  • analysis of on-premise IT & OT systems, design of the future hybrid IT landscape, and planning migration and managing the service provider for building the hybrid solution
  • assessment and consulting on implementing findings from a security audit of the parent company and developing an IT security concept
  • selection and management of IT service providers, establishing an ITSM framework, and technical lead of the migration
  • support and consulting during the transition to operations
Oct 2021 - Dec 2022
1 year 3 months
Leinfelden-Echterdingen, Germany

IT Architect

Daimler AG / Daimler Truck AG

  • Built a multi-stage VPC environment as part of the business unit separation
  • Managed the cloud risk process and implemented security requirements
  • Planned and led the VPC setup, including migration, testing, and data cleanup
  • Implemented an OSS monitoring and notification stack integrating application and operations services; backup and disaster recovery concepts; hardening and monitoring; VPN connectivity; VPC network architecture including zones, policies, and DNS; and OIDC integration for the application
  • Operated under the Application Management Service (AMS)
Sep 2021 - Apr 2022
8 months
Germany

IT Architect

NDA Versicherung

  • Designed an archive system for searching customer and insurance data after SAP decommissioning
  • Defined PoC reports for the search
  • Created the data model including roles and permissions concept for the archive system
  • Developed an operating model and implemented a container-based PoC (Docker Compose stack) with PostgreSQL database; admin container for data import; Tomcat application server with automatic certificate generation; BIRT engine with defined MVP reports
Mar 2021 - Apr 2021
2 months
Germany

IT Architect

NDA Automobilzulieferer

  • Consulted on and carried out a feasibility study for a data crawler to consolidate data from various internal and external systems
Oct 2004 - Jun 2022
17 years 9 months
Stuttgart, Germany

IT Architect

Mercedes Benz / Daimler Truck / Daimler AG

  • Developed a migration concept for a system landscape (Windows, RHEL, Kubernetes) from IBM Cloud to AWS
  • Developed modernization strategies for legacy applications for Kubernetes deployment, improving security and cloud maturity by introducing a service mesh
  • Built a VPC with BYOK in IBM Cloud for rehosting legacy applications, including base configuration, system hardening, monitoring concept, and managing the installation team
  • Implemented comprehensive monitoring with Prometheus & Grafana for all components across VPC stages (Kubernetes tenant, Windows and Linux VMs), including dedicated security audits, certificate and backup checks; and a centralized log stack with the Elastic Stack (Elasticsearch, Kibana, Logstash)
  • Performed hardening measures for Linux systems (RHEL, SuSE, Ubuntu) and specified changes for custom developments
  • Conceptualized and executed migrations from on-premises, private, and off-premises clouds to IBM Cloud VPC
  • Conducted PoC projects to evaluate modernization options for application architecture from legacy to container-based operation
  • Supported security audits, information classification, and cloud risk processes, and derived technical requirements and solutions
  • Led the project for changing the provider of a media archive and prepared to eliminate supplier dependency: process analysis and redesign; interface redesign; concept for decoupling systems and migrating data; management of vendors and internal project team
  • Responsible for AMS operation of distributed applications on Linux and Windows servers
  • Created concepts for on-premises system and data migrations with minimal downtime
  • Managed requirements, releases, and testing for the system landscape in the aftersales area
Sep 2000 - Present
25 years 6 months

Root server operations

Bausewein IT GmbH

  • Operated and administered Linux servers (Debian, Ubuntu, RHEL) focusing on security, performance, and stability
  • Deployed and managed various server services: mail service (Postfix, Dovecot, SpamAssassin, rspamd, ClamAV); databases (PostgreSQL, MariaDB/MySQL, Redis, InfluxDB); ticketing (Mantis BT); IoT stack (InfluxDB, MQTT, Grafana); monitoring (Telegraf, InfluxDB, Grafana); security (Lynis, rkhunter, ClamAV, Fail2Ban, UFW, CrowdSec); virtualization (Proxmox, KVM, QEMU, Docker, Kubernetes)
  • Continuously evaluated system hardening and security concepts

Summary

With over 30 years of broad IT experience — including more than 15 years in the enterprise environment — I offer companies strategic and operational excellence in designing, securing, and transforming complex IT landscapes.

I combine deep architecture and technology know-how with project experience in international corporations and medium-sized businesses. My focus is on IT strategy, cloud/legacy architecture, IT security, and transition management, especially in migrations, carve-outs, and infrastructure modernization. I stand for analytical thinking, goal-driven approach, pragmatic work style, and audience-appropriate communication.

Skills

  • It Strategy & Enterprise Architecture (Ibm Cloud, Aws, Hybrid Clouds, Vpc, Byok)
  • It Architecture & Infrastructure Modernization
  • Transition & Migration Management, Carve-outs
  • Planning & Managing Complex Migrations (Cloud / Hybrid / Legacy)
  • It Security, Hardening, Audit Support (Infrastructure & Processes)
  • Open Source Stack (Monitoring, Mail, Security, Databases)
  • Provider Management & Itsm Frameworks
  • International Project Experience In Corporate Structures
  • Project Management & Technical Consulting

Languages

German
Native
English
Advanced
French
Elementary

Profile

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Martin based?

Martin is based in Schwetzingen, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Martin speak?

Martin speaks the following languages: German (Native), English (Advanced), French (Elementary).

How many years of experience does Martin have?

Martin has at least 25 years of experience. During this time, Martin has worked in at least 4 different roles and for 10 different companies. The average length of individual experience is 2 years and 6 months. Note that Martin may not have shared all experience and actually has more experience.

What roles would Martin be best suited for?

Based on recent experience, Martin would be well-suited for roles such as: IT Architect, Transition Manager, Project Manager.

What is Martin's latest experience?

Martin's most recent position is IT Architect at NDA (defense industry).

What companies has Martin worked for in recent years?

In recent years, Martin has worked for NDA (defense industry), Daimler Truck AG, Bilfinger SE, Planta GmbH, and cunova GmbH.

Which industries is Martin most experienced in?

Martin is most experienced in industries like Information Technology (IT), Automotive, and Government and Public Administration. Martin also has some experience in Insurance and Aerospace and Defense.

Which business areas is Martin most experienced in?

Martin is most experienced in business areas like Information Technology (IT), Operations, and Project Management. Martin also has some experience in Business Intelligence.

Which industries has Martin worked in recently?

Martin has recently worked in industries like Information Technology (IT), Automotive, and Government and Public Administration.

Which business areas has Martin worked in recently?

Martin has recently worked in business areas like Information Technology (IT), Operations, and Project Management.

What is the availability of Martin?

Martin is immediately available full-time for suitable projects.

What is the rate of Martin?

Martin's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Martin?

To hire Martin, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

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Market avg: 890-1050 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.