You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Sonja ThunnessenST

Average response time: 1 hour

About Sonja

Interim Senior Delivery Lead with over 20 years of experience in taking over critical initiatives, program stabilisation, and special assignments in complex organisations, particularly within Financial Services.
Assumes full end-to-end responsibility and delivers reliable results under high time pressure, escalation, and regulatory constraints.
  • German

    Native or bilingual

  • English

    Fluent

Can work on-site
Frankfurt am Main (up to 50km)

Experience

  • Senacor Technologies
    Managing Consultant
    BANKING AND INSURANCE
    October 2025 - Today (9 months)
    Frankfurt, Germany
    • Overall responsibility for cutover planning and go-live preparation as part of a large-scale banking IT modernization
    • Alignment of dependencies, risks, and readiness across business and IT to ensure a controlled production start
    • Establishment of clear governance, decision paths, and transparent steering mechanisms to stabilize delivery under high time pressure
    Cutover Management Dependency Management Communication & Decision structures Readiness managment Risk Management
  • Deutsche Bank
    Product Owner & Product Governance Manager
    BANKING AND INSURANCE
    June 2021 - August 2025 (4 years and 2 months)
    Frankfurt, Germany
    • End-to-end responsibility for delivery and governance of critical digital products and initiatives in a highly regulated environment
    • Leadership and alignment of complex, cross-functional stakeholder landscapes
    • Preparation of management and board-2 level decision materials (status, risks, options, decision points)
    • Steering of external service providers and vendors, ensuring delivery stability and operational readiness
    Stakeholder Management Change Management Decision Discipline Agile Project Management Turnaround
  • Namics (Deutschland) GmbH
    Principal Project Manager
    AUTOMOBILE
    August 2012 - June 2015 (2 years and 10 months)
    Frankfurt am Main, Germany
    • End-to-end delivery responsibility for complex digital client programs
    • Stabilization of a critical client project through re-establishment of governance, structure, and collaboration
    • Management of scope, schedule, budget, and risks with clear client communication and expectation management
    • Contribution to business development and expansion of the client portfolio
    Delivery Stabilisation Execution Leadership Digital Transformation Stakeholder-Confidence Rebuild Turnaround

Recommendations

Be the first to recommend Sonja

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Diplom, Physik
    Arizona State University
    Diplom, Physik

Certifications

  • Project Management Professional (PMP)
    Project Management Institute
    2005
    Communications Management PMO Cost Management Scope Management Schedule Management Quality Management Procurement management Resource Management Risk Management Stakeholder Management
  • Product Owner & Product Manager (PO/PM)
    SAFe
    2018
    Product Development Product management Scaled Agile Framework Backlog Refinement Business Case Development Agile Methodologies product owner SAFe Value definition Lean-Agile

Skill set

Categories