Senior Network Architect (VLAN/Segmentation) (m/f/d)
Project information
- Energy industry
Responsibilities
- VLAN Discovery, Assessment & Cleanup Strategy
- Conduct a full assessment of existing VLAN structures across all of the client's locations
- Identify unused, obsolete, conflicting, or non-compliant VLANs
- Develop a strategic cleanup and redesign plan that aligns with the client’s network architecture standards, segmentation requirements, and resilience objectives
- Present the cleanup concept and proposed redesign to the client for sign-off prior to execution
- VLAN Migration Planning & Execution
- Develop site-specific and global migration plans, including fallback procedures, maintenance windows, and change execution sequences
- Coordinate with internal teams and external vendors to prepare each site for VLAN transitions
- Oversee or perform VLAN migrations, ensuring minimal service disruption and adherence to change management processes
- Present migration results and documentation for each site to the client for sign-off
- Network Risk Assessment & Mitigation
- Identify risks associated with VLAN redesign and migrations, including dependencies with firewalls, routing, OT/IT boundaries, and legacy systems
- Develop mitigation strategies and present all findings, alternatives, and recommended urgent initiatives to the client for review and sign-off
- Compliance & Information Security Alignment
- Validate that the new VLAN structure and migration approach comply with the client's information security policies, industry best practices, and audit requirements
- Provide recommendations to resolve any compliance gaps and present results to stakeholders
- Documentation & Reporting
- Maintain detailed, accurate documentation of VLAN structures, cleanup activities, migrations, and dependencies
- Produce weekly progress reports for senior management
- Prepare and deliver presentations summarizing status, risks, and next steps
- Alignment with Network Security Team
- Proactively support internal stakeholders and with expert-level input on VLAN design, migration strategy, and network segmentation practices
Profile
- VLAN & Network Segmentation: Design, assessment, cleanup, and migration
- Layer 2/3 Networking: STP, OSPF, BGP, VRRP, inter-VLAN routing
- Switching & Routing: Multi-vendor (Cisco, Juniper, Aruba) configuration and troubleshooting
- Network Security: Firewall policies, ACLs, OT/IT segmentation, compliance with security standards
- Risk & Compliance: ISO 27001, NIST, audit readiness, gap analysis
- Migration Planning & Execution: Change management, rollback strategies, minimal downtime
- Documentation & Reporting: Network diagrams, migration plans, executive presentations
- Stakeholder Communication: Technical and non-technical audiences, vendor coordination
- Project Management: Multi-site migrations, timeline control
- Fluent German & English
- Bonus: SASE/Zero Trust
Benefits
- A very renowned company
- Dynamic and innovative market environment
- High degree of personal responsibility
About Hays
IT is and always has been our core business that laid the foundation for Hays' success. We are the biggest privately owned IT recruitment agency in Germany and offer the best jobs for every career level – whether you are interested in vacancies in agile SMEs or international DAX groups. Hays masters the entire IT job spectrum, from support to software architecture or digitalisation – thanks to our broad portfolio, we have something for everyone. In the last decades, we were able to support numerous IT experts with choosing the right path for a successful career, positioning ourselves as their lifelong partner. Our highly specialised consultants can cater to your every wish and expectation and will prepare you for interviews and contract negotiations. Give it a try and learn what the market has to offer – our services are free of charge, non-binding and discreet! We look forward to hearing from you.
Staffing process for freelance specialists
- Analysis of qualifications
- Telephone or personal interview
- Contact with customers
- Contract with Hays
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1. Analysis of qualifications
We carry out a detailed analysis of your technical qualifications on the basis of your CV, your application documents and your profile.
Contact at Hays
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