Stefan Kreyssig
Presales Telecommunications Solution Architect @Capgemini
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WORK HISTORY
Presales Telecommunications Solution Architect @Capgemini
Düsseldorf, DE
Responsibilities:• Developed customized private wireless, RAN and core network solutions for Tier 1 operators and industrial customers.• Lead tender responses and proposal development for major projects, including forecast planning and pipeline management.• Supported digital transformation, GTM execution and consultative selling strategies aligned to customer needs.• Developed ORAN system integration strategies for Deutsche Telekom, ensuring partner alignment and optimized service delivery.• Providing technical advice to public sector customers, ensuring compliance and alignment with stakeholders through effective stakeholder engagement.• Prepare and deliver technical presentations to clients and internal teams in support of strategic consulting and marketing programs.Achievements:• Delivered tailored 5G solutions for BASF, BOSCH, and Deutsche Bahn, significantly enhancing customer engagement and satisfaction.• Developed AI/ML-powered energy optimization for a Tier 1 CSP, achieving 18% energy savings in network simulations.• Completed a 3-month 5G modernization consultancy for the German Police, ensuring compliance and strong stakeholder engagement.• Enhanced partner ecosystem collaboration through integrated planning with Nokia, Ericsson, and Microsoft
EDUCATION
Extended Secondary School - Halle/Saale (Germany)
Advanced Levels Degree (General Certificate of Education)
Chamber of Industry and Commerce - IHK Solingen/Neuss Germany
Computer Science & Engineering Degree, Communication & Information Technologies
Polytechnical School - Halle/Saale (Germany)
General Certificate of Education Degree (GCE)
ABOUT STEFAN KREYSSIG
I\'m a Presales Solution Architect with over 25 years of experience in the telecommunications industry, helping service providers, enterprises, and government organizations design and deliver advanced network solutions. My focus areas include 4G/5G, RAN, Open RAN, mobile transport, and end-to-end network architectures. Throughout my career, I’ve worked across a broad range of technologies—LTE, Private 5G, Mobile Edge Computing, Telco Cloud, and NFVi—always with a hands-on, customer-focused approach. I’m committed to creating future-ready solutions that align with business goals and drive digital transformation. Some of the projects I’m most proud of include leading Indonesia’s first nationwide LTE deployment (over sites), supporting a 5G modernization effort for German security forces, and helping European CSPs transition to open and virtualized RAN. I’m always exploring what’s next—whether it’s AI-driven, energy-efficient networks or cloud-native architectures—to build smarter, more sustainable connectivity. Open to roles in Thailand or Southeast Asia (onsite or remote).
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