Martin Bausewein-IT Architect
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Experience
IT Architect
NDA arms industry
- Evaluation 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
- Design of a proof-of-concept approach for step-by-step evaluation of options
IT Architect
Daimler Truck AG
- Building an application stack in a VPC (IBM Cloud) to fully separate Mercedes-Benz infrastructures
- Setting up and switching VPN connections, including network and firewall configuration
- Rebuilding RHEL8 VMs with the department application (including nginx, traefic 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
Transition Manager
Bilfinger SE
- Interim reinforcement of the project team for worldwide WAN/LAN outsourcing for around 700 sites
- Responsibility for vendor management in WAN/LAN discovery and planning of transition and migration in WAN, LAN, service management, and NOC
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 at the Baden-Württemberg police
- Managing a proof of concept (PoC) to evaluate planning systems for the Ministry of the Interior of Baden-Württemberg
Transition Manager
cunova GmbH
- Lead architect for non-SAP applications and security during a carve-out
- Analysis of on-premise IT & OT legacy systems, design of the future hybrid IT landscape, and planning the migration and vendor management for building the hybrid solution
- Assessment and advice on addressing findings from a security audit of the divesting company and development of an IT security concept
- Selection and management of IT service providers, establishment of an ITSM framework, and technical leadership of the migration
- Support and consulting during the transition to operational run
IT Architect
Daimler AG / Daimler Truck AG
- Building a multi-stage VPC environment as part of the division split
- Managing the cloud risk process and implementing security requirements
- Planning and executing or managing the VPC setup including migration, testing, and data cleanup
- Implementing an OSS monitoring and notification stack with integration of application and operational services; backup and disaster recovery concepts; hardening and monitoring; VPN connectivity, VPC network architecture including zones, policies, and DNS; OIDC integration of the application
- Operating within the Application Management Service (AMS)
IT Architect
NDA Versicherung
- Designing an archive system for searching customer/insurance data after SAP shutdown
- Defining PoC reports for searching
- Creating the data model including roles and permissions concept for the archive system
- Developing an operating model and implementing a container-based PoC (Docker Compose stack) with a PostgreSQL database; admin container for data import; Tomcat application server with automatic certificate generation; BIRT engine with defined MVP reports
IT Architect
NDA Automobilzulieferer
- Consulting and feasibility analysis for a data crawler to consolidate data from various internal and external systems
IT Architect
Mercedes Benz / Daimler Truck / Daimler AG
- Creating a migration concept for a system landscape (Windows, RHEL, Kubernetes) from IBM Cloud to AWS
- Developing modernization strategies for legacy applications to run on Kubernetes, improving security and cloud maturity by introducing a service mesh
- Building a VPC with BYOK in IBM Cloud for rehosting legacy applications, including basic configuration, system hardening, a monitoring concept, and coordinating the installation team
- Setting up overarching monitoring with Prometheus & Grafana for all components across VPC stages (Kubernetes tenants, Windows and Linux VMs) with dedicated security audits, certificate and backup checks; central log stack using the Elastic Stack (Elasticsearch, Kibana, Logstash)
- Performing hardening measures for Linux systems (RHEL, SuSE, Ubuntu) and specifying changes for custom developments
- Designing and implementing migrations from on-premise, private, and off-premise clouds into IBM Cloud VPC
- Executing PoC projects to evaluate modernization options for application architectures from legacy to container-based operations
- Supporting security audits, information classification, and cloud risk processes, and deriving technical requirements and solutions
- Leading a project to switch the provider of a media archive and prepare to eliminate a supplier dependency: process analysis and redesign; interface redesign; decoupling concept and data migration; managing vendors and the internal project team
- Responsible for AMS operations of distributed applications on Linux and Windows servers
- Designing on-premise system and data migration strategies with minimal downtime
- Managing requirements, releases, and testing for the system landscape in the aftersales area
Root server operations
Bausewein IT GmbH
- Operating and administering Linux servers (Debian, Ubuntu, RHEL) with a focus on security, performance, and stability
- Setting up and running 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 evaluating system hardening and security concepts
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Automotive, Government and Administration, and Insurance.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Operations, Project Management, and Business Intelligence.
Summary
With many years of comprehensive 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-oriented 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 & Management Of Complex Migrations (Cloud / Hybrid / Legacy)
- It Security, Hardening, Audit Support (Infrastructure & Processes)
- Open Source Stack (Monitoring, Mail, Security, Databases)
- Provider Governance & Itsm Frameworks
- International Project Experience In Corporate Structures
- Project Management & Technical Consulting
Languages
Statistics
Experience
Global Experience
Expertise
Profile
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