Martin Thomas - Freelance, Interim Controller

Lüneburg, Germany

Experience

Jan 2025 - Apr 2025

4 months

Berlin, Germany

Freelance, Interim Controller

Outfittery GmbH

Monthly closing, marketing controlling, investor reporting
Knowledge transfer in controlling
Optimization of controlling, budget and forecast processes
Tableau
Microsoft Navision

Nov 2024 - Feb 2025

4 months

Hamburg, Germany

Freelance, Data Governance Consultant

Vehicle Manufacturer via Aequitas Affinity GmbH

Master data analysis
Workshops and consulting in data governance

Aug 2024 - Oct 2024

3 months

Germany

Freelance, Interim Controller

Mail Order Company

Establishment of controlling, costing and automated reporting, category management and purchasing
Project management for controlling knowledge transfer
Optimization of controlling and data maintenance
Microsoft Power BI
KLAR!, Deltamaster

Oct 2023 - Feb 2024

5 months

Hamburg, Germany

Freelance, Project Manager Accounting and Reporting

Private Sanitary, Heating & Ventilation Company

Project lead for accounting succession, outsourcing of accounting
Project lead for reporting handover, liquidity planning

May 2023 - Jul 2024

1 year 3 months

Stuttgart, Germany

Freelance, Project Manager Data Management and Reporting

Arverio Deutschland GmbH (formerly Go-Ahead)

Project lead for data strategy, data warehouse and data quality
Project coordination of various software vendors, BI consulting
Definition of KPIs for all business units (management, operations, HR, sales, energy, safety, quality assurance, transport contract management, controlling)
Creation of dashboards and reports for all departments
Selection and migration of an ETL tool (CloverDX)
Requirements management, specification "current roadmap"
Data quality management
Process optimization (analysis, documentation, modeling)
Scrum - agile methodology and ticket systems
Microsoft Power BI
CloverDX, SQL, Azure Data Factory

Aug 2021 - Nov 2022

1 year 4 months

Gerdau, Germany

Team Lead Controlling

Bohlsener Mühle GmbH & Co. KG

Restructuring of controlling (production controlling, financial controlling, purchasing controlling, sales controlling, sustainability controlling, cost center controlling)
Introduction and migration from QlikView to Power BI, dashboards
Adjustments and redesign of costing
Design and implementation of budget process, corporate planning, forecast
Execution of actual vs. plan comparisons, analyses
Introduction of data management
Sub-project lead for ERP MS Business Central rollout – requirements analysis and specifications for master data and controlling
Process optimization and modeling
Development of ETL pipelines and data warehouse
Assistance with annual and monthly closings, regular inventory valuation
Technical and disciplinary management of 3 staff members
Scrum - agile methodology
Jira, Confluence
MS NAV
MS SQL
Microsoft Power BI: data visualization
Talend ETL, SQL

Sep 2020 - Jul 2021

11 months

Hamburg, Germany

Head of Business Analytics & Processes

Bauer Media Group, Publishing Germany

Project lead for selection and implementation of BOARD, requirements management, stakeholder management and project controlling
Process analysis, modeling (BPMN) and optimization in controlling and finance
Design, development, testing, implementation and optimization of corporate planning (budget, forecast)
Design of quality management processes
Ensuring clear data requirements, data management, data quality assessment and migration
Data warehouse migration from SAP BW to MS SQL
Creation and expansion of personnel reporting, budget reports and BU and group reporting
Building and leading a team of functional and technical staff
BOARD, Microsoft Power BI, Excel
Scrum and traditional IT project management
Jira, Confluence
SAP CO
MS SQL

Apr 2020 - Aug 2020

5 months

Hamburg, Germany

Business Intelligence Controller

Bauer Media Group, Publishing Germany

Project lead for selection and implementation of BOARD, requirements management, stakeholder management and project controlling
Process analysis, modeling (BPMN) and optimization in controlling and finance
Design, development, testing, implementation and optimization of corporate planning (budget, forecast)
Design of quality management processes
Ensuring clear data requirements, data management, data quality assessment and migration
Data warehouse migration from SAP BW to MS SQL
Creation and expansion of personnel reporting, budget reports and BU and group reporting
Building and leading a team of functional and technical staff
BOARD, Microsoft Power BI, Excel
Scrum and traditional IT project management
Jira, Confluence
SAP CO
MS SQL

Oct 2016 - Sep 2019

3 years

Hanstedt, Germany

Executive Assistant & Head of Controlling

Deerberg GmbH

Advising and supporting management in implementing strategic and operational decisions/projects
Establishment, leadership and management of corporate controlling, including marketing controlling, sales controlling, online controlling, purchasing controlling, supply chain controlling, store controlling, HR controlling and IT controlling
Leadership, strategic planning, selection, analysis, execution, monitoring, coordination, quality management, data management and requirements management of agile (SCRUM) and traditional software projects (ERP, PIM, eShop), data warehouse and BI systems
Creation of dashboards and visualizations, mining of customer data and assortment structures
Restructuring
Coordination of digitization, data strategy, optimization of business processes
Execution of actual vs. plan comparisons, analyses and budget planning
Assistance with annual and monthly closings, regular inventory valuation
Liquidity planning
Building and leading a team of functional and technical staff
Tableau, SAP BO
mgm Commerce ERP (Choice 6)
Scrum and traditional IT project management
Jira, Confluence
Talend, MS SQL
Datev
SQL
PIM – eggheads

Jul 2014 - Sep 2016

2 years 3 months

Hanstedt, Germany

Team Lead Controlling & Business Intelligence

Deerberg GmbH

Advising and supporting management in implementing strategic and operational decisions/projects
Establishment, leadership and management of corporate controlling, including marketing controlling, sales controlling, online controlling, purchasing controlling, supply chain controlling, store controlling, HR controlling and IT controlling
Leadership, strategic planning, selection, analysis, execution, monitoring, coordination, quality management, data management and requirements management of agile (SCRUM) and traditional software projects (ERP, PIM, eShop), data warehouse and BI systems
Creation of dashboards and visualizations, mining of customer data and assortment structures
Restructuring
Coordination of digitization, data strategy, optimization of business processes
Execution of actual vs. plan comparisons, analyses and budget planning
Assistance with annual and monthly closings, regular inventory valuation
Liquidity planning
Building and leading a team of functional and technical staff
Tableau, SAP BO
mgm Commerce ERP (Choice 6)
Scrum and traditional IT project management
Jira, Confluence
Talend, MS SQL
Datev
SQL
PIM – eggheads

Jan 2014 - Jun 2014

6 months

Hanstedt, Germany

Business Informatics Specialist / BI Consultant

Deerberg GmbH

Advising and supporting management in implementing strategic and operational decisions/projects
Establishment, leadership and management of corporate controlling, including marketing controlling, sales controlling, online controlling, purchasing controlling, supply chain controlling, store controlling, HR controlling and IT controlling
Leadership, strategic planning, selection, analysis, execution, monitoring, coordination, quality management, data management and requirements management of agile (SCRUM) and traditional software projects (ERP, PIM, eShop), data warehouse and BI systems
Creation of dashboards and visualizations, mining of customer data and assortment structures
Restructuring
Coordination of digitization, data strategy, optimization of business processes
Execution of actual vs. plan comparisons, analyses and budget planning
Assistance with annual and monthly closings, regular inventory valuation
Liquidity planning
Building and leading a team of functional and technical staff
Tableau, SAP BO
mgm Commerce ERP (Choice 6)
Scrum and traditional IT project management
Jira, Confluence
Talend, MS SQL
Datev
SQL
PIM – eggheads

May 2011 - Dec 2014

2 years 8 months

Lüneburg, Germany

Senior Software Engineer

AIC Group GmbH

Design, specification, requirements analysis and implementation of analytical campaign management software and customer master and data quality services
Creation of custom reports, DWH and data quality systems for retail companies (>€6 billion)
MicroStrategy
Java / Spring
REST
Hibernate
Scrum - agile methodology
Jira
Talend
MS SQL, Oracle, DB2
ai.Suite - campaign management software
Customer master, SaaS Offer Engine

Nov 2010 - Apr 2011

6 months

Lüneburg, Germany

Software Engineer

AIC Group GmbH

Design, specification, requirements analysis and implementation of analytical campaign management software and customer master and data quality services
Creation of custom reports, DWH and data quality systems for retail companies (>€6 billion)
MicroStrategy
Java / Spring
REST
Hibernate
Scrum - agile methodology
Jira
Talend
MS SQL, Oracle, DB2
ai.Suite - campaign management software
Customer master, SaaS Offer Engine

Jan 2009 - Oct 2010

1 year 10 months

Lüneburg, Germany

Software Engineer

Werum Software & Systems AG

Software development, specification and implementation of production software (MES) in the pharmaceutical sector
Design and implementation of quality management and test management processes
Java / JUnit
Scrum - agile methodology
Jira
PAS-X MES Suite
GMP

Oct 2007 - Nov 2008

1 year 2 months

Hamburg, Germany

Working Student & Master’s Thesis, Projects and Systems Department

bonprix Handelsgesellschaft mbH (Otto Group)

Successful execution of own software projects in teleshopping and competitive analysis (web mining)
Reporting for purchasing control
PHP
Oracle
SQL

Mar 2004 - Sep 2005

1 year 7 months

Karlsruhe, Germany

Research Assistant, Thesis Candidate and Intern, Interoperability and Assistive Systems Department

Fraunhofer Institute IITB (now IOSB)

Design and implementation of information systems in multinational research projects (EU-CHIL, NATO-CAESAR)
Java
OWL, ontologies, Semantic Web, Protégé
Software agents

Feb 2002 - Aug 2002

7 months

Lüneburg, Germany