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.
• Built AI-native document and process automation solutions using Obsidian, LangGraph workflow orchestration and multi-agent systems, including human-in-the-loop review gates, evidence management and full auditability.

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.
• Implemented FinOps automation measures such as automated shutdown of idle resources, orphaned resource cleanup and cloud cost alerting, resulting in improved cost visibility and efficiency.
• Established CI/CD governance, observability and operational standards using GitHub Actions, ADRs, CloudWatch, Prometheus, Grafana and Loki.

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.
• Redesigned cost and revenue structures through contract reviews, SAP analyses and offer approval processes; reorganized monthly management reporting in preparation for the divestment of German business activities.
• Led monthly closing, variance analyses, budgeting and forecasting; managed critical balance sheet topics including IT cost-saving potential, fixed assets, accruals and open items.

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.
• Introduced weekly team routines, meeting documentation, a responsibility matrix and reporting structures by trade and cost center manager.
• Acted as finance point of contact for banks, insurance providers and the outsourced financial accounting provider; supported SAP FI/CO process changes and prepared the implementation of contract management software.

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.
• Created and implemented finance governance guidelines for transfer pricing and internally generated intangible assets; significantly expanded and structured the group's transfer pricing documentation (GAufzV, functional & risk analysis, intercompany transactions).
• Coordinated R&D activities and supported the implementation of a SAP PS-connected time recording and activity reporting system, including project assignment logic, resource mapping and audit-proof data handling.

• Focus on family with shared small trips and big everyday adventures.

Daimler Fleetboard GmbH · Stuttgart, Germany

• Prepared monthly closings, operational planning and budget reporting for IT- and service-related business areas.
• Managed cost center controlling, budget planning and variance analyses for IT projects and reseller implementation activities.
• Developed financial calculations for new business cases and supported OP planning for an international reseller implementation across multiple European markets.
• Worked on transfer pricing and resale-minus structures; acted as finance interface for sales, IT, accounting and management with commercial power of attorney.

Daimler AG · Stuttgart-Möhringen, Germany

• Managed IT cost center controlling, budget monitoring and financial steering for IT-related organizational units and projects.
• Maintained and structured budget and cost center data in Excel-based planning and reporting tools; coordinated operational budget planning and quarterly/year-end closing processes.
• Prepared variance analyses, defined corrective measures and created management presentations and decision papers for department and division-level stakeholders.
• Supported the rollout of an IT Financial Management planning tool and improved transparency in internal IT billing and cost allocation processes.

Matrium GmbH (Airbus subsidiary) · Unterschleißheim, Friedrichshafen and Ulm, Germany

• Managed strategic and operational planning for business units and support functions, including revenue, cost and resource planning.
• Prepared cost center planning, variance analyses and management reporting; led finance-related project workstreams including price calculations, contract negotiations and commercial decision support.
• Built Excel-based costing and recalculation models and modeled financial process flows for Airbus Helicopters-related inventory and invoicing workflows.