Irmgard Drey - Selfemployed - Interims Management in M&A Environments
Experience
Selfemployed - Interims Management in M&A Environments
Irmgard Drey e.K.
- Consulting and implementation in the areas of human resources, finance and IT for medium-sized companies in the telecommunications, plant engineering, real estate, metal processing, pharmaceutical and energy supply sectors
- Establishment and re-design of human resources departments - specifically in carve-out or merger environments
- Management coaching and Interim HR Management HR IT: SAP HCM Implementation of various requirements Compensation management Works agreements Outsourcing Payroll Budget planning/HR controlling
- Centralised support and advisory to management in regards of HR strategy, and implementation of end-of-year reporting processes
- Company pension scheme development, reporting tool development and HR / Payroll report generation
- Implementation of the Occupational Pensions Strengthening Act and corporate framework design
- Development of interdependent and coordinated training programs for departments and department managers
- Junior manager - coaching
- Compensation/Benefits Recruiting, Interviews, Search
- Introduction of time management with SAP HCM PT process optimization General Data Protection Regulation Document management, etc
- Tax audit digitization project, e.g., personnel files, expense compensation for employees in the construction industry
- Cost reduction projects to increase operational efficiency
- Led negotiations with works council and economic committee
- Redesign of compensation concepts personnel management - Fit for Future.
Global HR Transformation & PMI / Carve-out - Interim Senior HR / Change & PMI Lead
(Industry / Technology)
Responsibilities
- Leading the HR workstreams in multiple post-merger and carve-out projects (EU/International)
- Harmonizing contracts, company agreements, compensation and HR policies
- Acting as sparring partner for the board, management, legal, and people & culture teams Results / KPIs
- Harmonized >85% of all HR guidelines within 9 months
- Reduced HR-related PMI risks by >40% (audit & legal findings)
- On-time PMI implementation without delaying the business go-live
- Adoption rate of new HR standards by managers >90%
Post-Merger Integration HR - Interim HR & Payroll Transformation Lead
Responsibilities
- Reorganizing HR and payroll support structures
- Implementing integrated time management
- Coordinating with the parent company
- Recruiting specialists
- Budget planning and succession planning
Results / KPIs
- Stabilized payroll within 3 months
- Company agreements
- Introduced transparent time management for >20 employees
- Works council approval of all new models without escalation
Compensation & Benefits International - Interim C&B / HR Systems Lead
(Pharma / Biotech)
Responsibilities
- Integrating international C&B structures into SAP HCM
- Developing budget, forecast and reporting logics
- Audit-proof documentation
Results / KPIs
- International comparability of compensation data for 100% of target roles
- Shortened budget and forecast cycles by ~25%
- Successful internal and external audits without findings
HR Systems & Payroll Excellence - Interim SAP HCM / Payroll Expert
Responsibilities
- Optimizing reporting (DEÜV, A1, social security, international)
- Harmonizing master data and wage types
- Quality assurance after system updates Results / KPIs
- Reduced error rate in reporting to <0.3%
- Cut manual corrections by >50%
- Stable payroll processes after releases from the first run onwards
Global HR Shared Services Setup - Interim Head of HR Shared Services
(Industrial group)
Tasks
- Setup and management of an international HR service center
- Management of external payroll providers (including ADP)
- Implementation of governance, SLA, and reporting structures Results / KPIs
- Established an SSC for >6 countries / >5,000 employees
- Reduced payroll processing times by ~30%
- Service provider SLA compliance >98%
- HR operations cost savings of ~20% p.a.
Founder, Managing Director
TripleCar GmbH
- Spearheaded the expansion of service lines encompassing vehicle and real estate trading, international vehicle rentals, hospitality, and business consulting, aligning operational objectives across strategy, personnel, systems, and coaching functions
- Built payroll-system for the rapid expansion of private hire transport operations in 2 new expanison markets
- Led 40 employees in various sectors of the secondary automotive transport market
- Increased revenues year on year expanding self-drive rentals to 3 new countries within the EU and 50+ Vehicles on the road
- Secured key partnerships with international mobility providers and financial institutions, enabling expansion of service offerings and solidifying TripleCar GmbH's position within the European mobility and real estate sectors.
Payroll & HR Transformation - Interim Head of Payroll / HR Operations
(Energy / Infrastructure)
Tasks
- Stabilize error-prone SAP HCM payroll processes
- Ensure year-end closings, audits, and special payroll runs
- Integrate time management and collective bargaining rules Results / KPIs
- Reduced payroll error rate from >6% to <0.5%
- 100% on-time payroll processing within 3 payroll cycles
- Successful external audits with no findings
- Significant reduction in escalations from business units (–60%)
Carve-out & Restructuring - Interim HR Director / Payroll Lead
Tasks
- HR-led separation of multiple entities including SAP HCM separation
- Implementation of new working time and shift models
- Social plan, transitional company, workforce reduction Results / KPIs
- Successful carve-out with no payroll interruption
- Legally compliant handling of >100 employee transfers and severance cases
- Introduction of new shift models for >1,000 employees
- Led a team of 14 in the HR Shared Service Center
Audit Support & HR System Landscape Setup - Interim HR Consultant
Tasks
- Supported social security and tax audits
- Built new HR system landscape (SAP system transformation)
- Launched new time management processes Results / KPIs
- Flawless audit handling
- Successful SAP transformation with zero downtime
- Fully integrated, automated error-free time management
Payroll reorganization & leadership coaching - Interim Payroll Lead / HR Coach
Tasks
- Stabilized payroll after leadership change
- Coached new HR and payroll leaders
- Handled SAP customizing, testing, and reporting
Results / KPIs
- Successfully handed over to new leadership after 6 months
- Established sustainable backup and knowledge structures
- Increased team satisfaction (internal feedback) by over 30%
Reorganization & Team Leadership of HR Business Partners and Payroll - Interim HR Business Partner and Payroll Lead
Telecommunications
Tasks
- Managed compensation and benefits
- Recruited managers
- Strategically realigned departments
- Led two departments
Results / KPIs
- Processed over 1,500 payroll cases without errors
- Supported employee separations
- Conducted BEM meetings
- Delivered leadership coaching
- Achieved 100% rollout of digital personnel files
CEO / Financial Management
Mac Cicero GmbH
- B2B - advertising agency and general advertising services
- PR-Branding in the pharmaceutical industry especially for congresses and fairs
- Directed financial planning and resource allocation initiatives to sustain business growth in the competitive pharmaceutical sector, aligning fiscal strategies with long-term organizational objectives.
Entrepreneur / Managing Director
Irmgard Drey e.K.
- General management consulting and related services, particularly in the areas of human resources, strategy, systems, consulting, and coaching
- Directed operational improvements by restructuring internal workflows, streamlining project management processes, and guiding cross- department collaboration to support sustainable organizational growth in different industries.
Payroll-Accounting Management
Media-Saturn-Holding GmbH
- Assumed management responsibility for payroll accounting for ca. 3,500 individual accounting cases with 4 employees under management
- Implemented and introduced an international accounting software SAP R/3 with data transfer from legacy systems
- Took over the billing and payroll-accounting for Saturn Electro- Handelsgesellschaft mbH with approx. 1000 billing cases
- Established payroll systems in the expansion countries and led the introduction of the SAP HR modules OM, PA, PY and PT
- Expansion of national personnel administration and accounting into an internationally operating Competence Center (CC) HRIS with the following structure: National service center "Accounting" with the main tasks of file management, time management, personnel data maintenance, data maintenance for organizational management, preparation of monthly accounting Service, process and product management Accounting and special support "Top management both nationally and internationally"
- HR-Controlling Business Partner - Country Support
- Developed international HR payroll policy with communication concept for policy competence
- Business process management
- Business development: developed and implemented professional excellence in the HR Services & Processes department; led the development of internal communication and work platform for HR-PY managers
- International project management with quality and risk management
- Led the Post-Merger-Integration of HR Processes and Systems
- Led specialist team for Due Diligence of HR Systems for mergers and acquisitions
- Organised and coordinated workshops for human resources strategy development
- Reengineering of business process for efficient human resource management
- Intra-company change management consultation
- Great Place to Work – managed and coordinated the development of an information and communication concept
- In cooperation developed and introduced the HR-IT roadmap
- Establishment and expansion of an international HR controlling agency
- Developed and implement strategic and operational HR reports
- Introduction of SAP BW with international rollout
- Consolidated international payroll and personnel administration processes, ensuring seamless alignment with regulatory frameworks across multiple expansion markets.
Authorized Signatory
Rheinhold & Mahla Unterstützungskasse GmbH
- Administered legal and financial obligations as an authorized signatory for the in-house support fund, ensuring accurate documentation and regulatory adherence during fund transactions and stakeholder communication.
Human Resources Department - Taskforce | IT-Coordinator
Rheinhold & Mahla AG
- Communicative bridge between employees and payroll-management
- Active member of internal cost committee for the reduction of general administrative costs
- Statistics and ad-hoc reporting for general labor cost oversight
- Support fund management for in-house retirement fund
- Prepared and managed pension commitments for unionized and senior employees
- Processed due diligence for employee construction loans
- Procurement and processing of information for annual / year-end reporting to stakeholders
- Procurement and implementation of new personnel information system at Reinhold & Mahla
- Severely disabled person registration, professional association registrations, State Statistical Office, trade tax breakdown, contributions for the various employers' associations, contribution splitting for the occupational and occupational health service, Chamber of Commerce and Industry membership fees
- Generalist support function operational departments in preparation of documents related to foreign contract workers
- Led team for the settlement and adjustment of pension benefits
- Coordinated cross-functional collaboration to streamline pension benefit calculations, ensuring compliance with evolving regulatory requirements and enhancing process transparency.
Human Resources Department - HR Coordination
Siemens AG
- Payroll-Management and execution
- Travel-Expense-Reporting
- Account reconciliation
- Domestic and foreign secondments
- Processing of hiring, transfers and terminations, appointments and contract changes.
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Professional Services, Pharmaceutical, Advertising, Retail, Manufacturing, and Energy.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Human Resources, Project Management, Finance, Strategy, Marketing, and Accounting.
Summary
Senior HR Executive with many years of international experience leading HR and HRIS transformation programs in carve-out, mergers & acquisitions and post-merger integration environments. Specialized in stabilizing and realigning HR and SAP HCM landscapes, data harmonization, organizational design, governance and managing global workstreams. Strong leadership, decisive and experienced in dealing with complex stakeholders, international management teams and external providers. High implementation skills in separating, migrating and reintegrating HR processes and systems – with a clear focus on business continuity, compliance and sustainable process quality.
Skills
- Income Tax Law
- Social Security Law
- Labor Law
- Coaching Training - Dehner Academy
- Sap R/3 Hr - Modular Programming
Languages
Education
Fernuniversität Hagen
Pre-diploma with subject-specific university entrance qualification · Economics · Hagen, Germany
Telekolleg München
University Entrance Qualification · Munich, Germany
Evening School (VHS)
Certifications & licenses
Boating License SBF Sea And Inland Navigation
Certificate Of Participation In The Training According To Section 4 Paragraph 1 No. 4 Of The Restaurant Act
Certificate Of Professional Suitability For Domestic And International Transport By Taxi And Rental Car
Passenger Transport License - (Taxi)
Statistics
Experience
Global Experience
Expertise
Qualifications
Profile
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