Resume

Daniel Siebert

Cloud Engineer | FinOps | Senior Finance Controller

daniel@siebert.cv·Stuttgart, Germany


With over 12 years of experience in finance and IT management and deep expertise in SAP and M&A, I build the bridge between financial systems and cloud technologies. I combine ERP implementation, process optimization, and risk management with cloud engineering (AWS, Terraform, Docker, CI/CD). My recent focus includes RDS (PostgreSQL) and EC2 optimization, cost automation, and CloudWatch-based reporting — aligned with FinOps principles. Currently completing the FinOps Certified Practitioner program.

Skills

AWS Cost Optimization & FinOps · AWS Cost Explorer, Budgets, and CUR data analysis · CloudWatch metrics interpretation and dashboarding (Excel / Power BI) · Tagging compliance, resource governance, and cost allocation · Lambda automation for cost control (auto-stop, orphan cleanup, budget alerts) · RDS (PostgreSQL / SQL Server) tuning, consolidation, and license management · EC2 optimization and performance tuning (compute efficiency, dedicated hosts) · SAP Modules: MM, SD, PP, PS, FI, CO, BI · Git & GitHub, GitHub Actions · Linux Systems & Shell Commands, Bash scripting · Monitoring & Logging

Experience & Projects

DevSecOps Engineer

August - September 2025

Webeet.io · Amsterdam, Netherlands - Remote

  • Network / VPC: Public/Private subnets, Edge NAT, egress testscripts
  • App & Data: Docker Compose stack, PostgreSQL + PgBouncer with mTLS, k6 tests, backup/restore workflows
  • Admin Paths: SSH + mTLS, WireGuard tested, runbooks documented
  • FinOps & Cost Optimization: Implemented AWS Lambda automation for EC2 runtime optimization, orphaned resource cleanup, and budget alerting.
  • Designed tagging strategy and Cost Explorer dashboards to monitor RDS and EC2 utilization, improving visibility and compliance.
  • Tuned PostgreSQL (RDS) and PgBouncer connection pooling for performance and cost efficiency, contributing to the FinOps roadmap.
  • CI/CD: GitHub Actions with OIDC → IAM, fmt/lint gates, drift detection (SAST not yet implemented)
  • Docs & Governance: Architecture Decision Records (ADRs), runbooks, Reflection Matrix, smoke tests
  • Observability: logging, metrics, and dashboards
TerraformAWSPgBouncerPostgreSQLFinOpsCI/CDGitHub ActionsCloudWatchWireGuard

Senior Finance Controller

March 2022 - May 2024

ISS A/S · Stuttgart

  • Directly advised the CFO on strategic financial initiatives, including a turnaround program that improved cost efficiency and financial stability.
  • Served as the primary financial liaison for the operational Key Account Manager in the Mercedes-Benz division, supporting 9 locations across Germany in core operational services (cleaning, catering, and technology).
  • Redefined the cost and revenue structure, conducting in-depth contract and SAP analyses, leading to optimized re-/calculation and approval processes for offers.
  • Successfully reorganized the monthly reporting system, preparing the company for the divestment of its Germany operations.
  • Led the execution of monthly financial statements, performing variance and weak-point analyses to identify cost-saving opportunities and improve financial forecasting accuracy.
  • Managed critical balance sheet topics, identifying IT savings potential, optimizing fixed asset management, and refining revenue/earnings accrual processes to enhance financial transparency and operational efficiency.
Financial StrategyControllingReportingSAPForecastingProcess OptimizationLeadership

Software Dev. & Cloud Eng. Program

July 2024 - September 2025

Masterschool · Remote

  • Completed a 60-week immersive program (3000+ teaching hours) covering the foundations of software engineering and specialization in cloud engineering and DevOps.
  • Software Engineering: Python (intro to advanced), OOP, web development (HTML, CSS, HTTP, REST APIs), Git/GitHub.
  • Backend & Databases: Flask, SQL, PostgreSQL, relational data modeling, ORM, Linux systems.
  • Cloud & DevOps: AWS (EC2, VPC, RDS, S3, Lambda, IAM, CloudWatch), Infrastructure as Code (Terraform, AWS CDK), Docker, CI/CD pipelines, serverless deployment, container orchestration.
  • Specialization: Cloud networking (VPC, peering, NAT), monitoring & logging, FinOps principles, and AWS cost optimization techniques.
PythonFlaskPostgreSQLTerraformAWSDockerCI/CDFinOpsCloud Engineering

Master of Business Administration

October 2008 - March 2012

University of Nuremberg · Nuremberg, Germany

  • Graduated with a Master of Business Administration from the University of Nuremberg, Germany.
  • Specialized in Business Law, Auditing, Economic History, and Financial Accounting.
  • Completed coursework in Strategic Management, Corporate Taxation, Business Valuation, and Risk Management.
  • Developed a solid foundation in corporate governance, regulatory compliance, and financial oversight.
  • Conducted academic research on the intersection of historical economic policies and modern fiscal frameworks.
  • Thesis focused on the “Marriage in Heaven” – the unprecedented M&A deal between Daimler-Benz and Chrysler – developed in direct collaboration with Daimler AG and former executive board members.
MBABusiness LawAuditingCorporate GovernanceStrategic ManagementFinancial Accounting

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