Senior Network Solution Designer (m/w/d/x)

T-Systems International GmbH

At T-Systems, we offer our business customers the right system solutions for their digital business. With our portfolio, we ensure that digital transformation reduces complexity, saves costs and makes everyday work easier. Our focus is on connectivity, digital, cloud & infrastructure as well as security - Let's power higher performance!

About the position

As a Senior Network Solution Designer, you decisively plan, design and develop the architecture of our modern networks and platforms. You are responsible for routing, switching and aggregation infrastructures, primarily based on Cisco technologies as well as solutions from other manufacturers. As part of an experienced team, you take on end-to-end responsibility from technical concept and solution design to integration and continuous development of high-availability network infrastructures, modern WLAN technologies and secure platform services.

Your core tasks:

• Architecture & Design: Conception, development and maintenance of sustainable network and platform architectures (routing, switching, VPN, WLC, firewalling, load balancing), primarily based on Cisco technologies and solutions from other manufacturers

• Automation & Infrastructure as Code: Development of modern automation processes, for example using Python, Ansible and Terraform, as well as managing configurations via CI/CD and Git workflows

• AI & Intelligent Network Operations: Evaluation and integration of AI-based approaches to optimize network operations, for example for anomaly detection, root cause analyses, proactive troubleshooting, and automating recurring operational tasks

• Data center integration & operation: Technical integration of complex systems in the data center including IP address management, DNS services and monitoring via Grafana

• Expertise & 3rd level support: analysis and elimination of highly complex malfunctions as well as technical support for demanding escalations

• Technical advice & standards: You advise internal stakeholders and project teams on complex technical issues, evaluate alternative solutions and contribute to the definition of architecture standards, best practices and technical roadmaps

• Innovation: Evaluation of the latest technologies around Wi-Fi 6E/7, VXLAN/EVPN and Zero Trust Network Access to continuously improve the platform ecosystem

Must-Have Skills

• Profound experience in solution design & network architecture: Several years of relevant experience in designing, developing and maintaining complex enterprise network architectures as well as verifiable experience in technical responsibility for sophisticated network or platform solutions

• In-depth Cisco know-how: Profound CCNP or CCIE level knowledge of using Cisco switches, routers, and firewalls.

• Routing & network protocols: Secure control of BGP, OSPF, VXLAN/EVPN and IPv4/IPv6 planning

• Network security & VPN technologies: Profound practical experience with Cisco firewalls, Cisco ISE, IPsec and FlexVPN

• WLAN technologies: Comprehensive knowledge of Cisco WLC and modern wireless standards (WiFi 6E/7)

• Network automation & tooling: Practical experience in automation using Python, APIs, Ansible or Terraform as well as using Docker and GitHub

• Monitoring & Support: Experience in 3rd level support and platform monitoring with tools such as Grafana

• Language skills & mobility: fluent German language skills as well as good, task-specific English skills and willingness to travel within Germany

That rounds off your profile

• Certifications at CCNP or CCIE level (Enterprise/Security/Service Provider)

• Practical experience with LANCOM network components, in particular routers and switches

• Skills in designing and operating load balancing solutions and core DNS/DHCP services

• Experience with CI/CD pipelines and GitOps workflows for automated network configuration

• Familiarity with ITIL processes and structured handling of 3rd-level support incidents

What we offer

• Flexible working & work-life balance: Attractive working time models, trust-based working hours and the option of hybrid work/ mobile office for an optimal reconciliation of work and private life

• Attractive compensation & additional benefits: Performance-based compensation in accordance with corporate tariff (VG 8), company pension scheme and other financial benefits

• Individual continuing education & career opportunities: Tailored development and certification options (e.g. Cisco CCNP/CCIE, cloud and automation technologies) as well as access to innovative learning platforms

• Future-oriented tech environment: creative leeway in ultra-modern network and data center environments in Hanover, including work on AI-based network operations and modern automation tools

• Modern equipment: The latest hardware and software equipment to professionally handle demanding solution design and platform engineering tasks

• Health & mobility offers: Comprehensive occupational health management, job cycle/mobility subsidies and benefits in the corporate environment

• Strong team culture: A collegial, open and innovation-driven work environment with regular team events and interdisciplinary exchange of knowledge

This position is also available on a part-time basis. Severely disabled people are given priority if they are equally qualified.

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