Daniel Siebert

Freelance · Stuttgart, Germany · Remote

• Developed cloud and IT operating model concepts for large-scale organizations across financial services, industrial manufacturing, healthcare and energy markets, translating technical operations into finance-steerable cost, governance and reporting models.
• Designed FinOps frameworks covering cost allocation, tagging governance, budget awareness and the integration of cloud consumption data into controlling and management reporting.

Webeet.io · Amsterdam, Netherlands · Remote

• Acted as technical team lead for a group of 10 engineers, driving the design and operation of a secure, cost-optimized AWS infrastructure with a focus on reliability, performance and cost efficiency.
• Led network architecture initiatives including VPC design, public/private subnet segregation and hardened NAT gateway implementation to ensure robust and secure connectivity.

ISS Automotive GmbH · Stuttgart, Germany

• Advised the CFO directly on strategic finance initiatives and a turnaround program aimed at improving cost efficiency, financial transparency and operational stability.
• Served as the primary commercial finance partner for the Mercedes-Benz division, supporting 9 sites across Germany in cleaning, catering and technical services.

Matrium GmbH · Ulm, Germany

• Led a Controlling team of 12 employees across multiple locations with full disciplinary and functional responsibility.
• Standardized and optimized monthly closing, controlling, reporting and planning processes at cost center level, covering direct costs, overheads, accounts receivable and accounts payable.

io-Consultants GmbH & Co. KG · Leonberg and Heidelberg, Germany

• Managed end-to-end controlling of IT and software projects, from proposal preparation and steering to invoice tracking and change request management; identified and reported time- and cost-related inefficiencies in project delivery.
• Supported post-merger change management, including process alignment, responsibilities and reporting structures.