Senior Cloud Architect (m/w/d)

About us In Austria, T-Systems, a subsidiary of Deutsche Telekom, offers its customers a broad portfolio for the strategic implementation of digital transformation. The basis for this is global reach for fixed network and mobile communications, highly secure data centers, a comprehensive cloud ecosystem of standardized platforms, worldwide partnerships and maximum security. T-Systems Austria employs around 570 people at five locations. At the T-Center on Rennweg in Vienna, the company operates a TwinCore data center that offers the highest possible level of security for company data while maintaining maximum energy efficiency. You don't write Terraform modules anymore - you decide what the entire platform that others write them on looks like. As a Senior Cloud Architect at T-Systems Austria, you are responsible for the technical design of business-critical cloud landscapes: landing zones, operating models, security architecture, and multi-cloud strategies for customers who place the highest demands on stability and security.

Your mission

• Design and ownership of enterprise cloud architectures: landing zones, multi-cloud and hybrid environments
• Overall technical responsibility for cloud migration projects - from workload assessment to production
• represent and document architectural decisions in architecture boards and review committees
• Close cooperation with pre-sales: Responsible for solution architecture for offers and RFP responses
• Technical mentoring and architecture reviews for cloud engineers and consultants as a team

Your profile

• 5-10 years of experience in cloud architecture, enterprise IT or complex infrastructure consulting
• In-depth, proven expertise in at least one hyperscaler (AWS, Azure, or GCP) - you've designed architectures, not just configured
• Experience in designing and implementing cloud transformations on an enterprise scale
• Solid understanding of cloud security, governance frameworks, and regulatory requirements (such as GDPR or NIS2)
• Basic knowledge of FinOps: Cloud cost architecture, TCO modeling and cost optimization are part of your architecture decision
• Experience in customer contact at CTO or enterprise architect level - you can represent and explain technical decisions
• German C1 and English C1 - you confidently conduct architecture boards and customer presentations in both languages

Beneficial

• Experience with GitOps, Infrastructure as Code (Terraform, Crossplane) and Kubernetes at platform level
• Cloud-native security skills: Zero Trust, CSPM/CNAPP tooling, or Well-Architected Framework Reviews
• Specialization in regulated sectors (e.g. public administration, KRITIS, financial services) or sovereign cloud architectures
• Professional/expert level certifications (AWS, Azure, GCP, or CNCF) are an advantage but not a requirement

What makes you stand out

• You design architectures that can still be operated in three years' time - not just the ones that look elegant today
• You bring clear opinions and defend them with arguments, not with hierarchy
• You enjoy taking junior colleagues through architecture reviews and building up their knowledge

What we offer

• Technical design authority - you make platform decisions, not just recommendations
• Structured development path: Senior Cloud Architect → Principal Architect → Distinguished Architect/Fellow
• Certification budget for advanced-level certifications - including exam fees and preparation time
• Hybrid working model: Vienna office, customer appointments and home office can be flexibly combined
• Active participation in the T-Systems solution portfolio - your architecture decisions become the market standard
• International network of architects within the Deutsche Telekom Group

Ready to grow? If you would like to get started with us, we look forward to receiving your application - preferably directly online!