DATEV Experts in Hamburg

The online service "Special Use of Streets and No-Parking Zone" was in a partially completed state. The following tasks had to be carried out to reach final completion:

• Preparation of an expert report on the status of the online service, and recommendations for action
• Ensuring that all LEIKAS to be used are available (service catalog / service descriptions of the authorities)
• Creating and aligning concepts for complex IT projects (business/IT concepts, architecture, interfaces, roadmaps)
• Requirements management
• Multi-project management with 3 stakeholders (Police, Dataport, development company)
• Determining resource needs
• Coordination to identify technical requirements through the IT architects
• Creating use cases and test cases
• Creating action items
• Managing external IT service providers
• Coordination and management of all activities
• Conflict resolution / business mediation
• User Acceptance Test (UAT) and acceptance by Hamburg Police (Traffic Directorate, Policy Department, Central Road Traffic Authority)

Technical environment: .NET, EfA minimum requirements, Leikas, Administrative Procedure Act (VwVfG), HWG (Hamburg Roads Act), Atlassian Jira, Confluence, MS Office

• Improving processes in the purchasing area
• Digitizing purchasing processes
• Optimizing end-to-end manufacturing processes

Sterlix GmbH is a company founded in 2016 that specializes in innovative digital solutions for ordering and payment in the hospitality and retail sectors. It offers products such as self-order terminals, web apps and AI self-checkout systems to optimize customers’ business processes and increase customer satisfaction.

• Professional, organizational and disciplinary management of accounting (5 employees)
• Implementation of a finance department (introduction of DATEV and S-Firm)
• Responsible preparation of monthly, quarterly and annual financial statements
• Preparation for and participation in shareholder and management meetings
• Professional training of employees (accounting and tax topics)

• General ledger accounting
• VAT
• ZM reports
• Z4 reports
• Z5a reports
• Intercompany reconciliations

• Strategic Transformation & Value Creation: Initiated and implemented a company-wide transformation program to establish a scalable, process-oriented organization. Focus on strategic agility, cost leadership and long-term financial resilience in a volatile market environment.
• Operational Excellence & Digitalization: Introduced digital management tools and automation initiatives to improve efficiency and speed up decision-making. Designed a modern operating model to promote data-driven leadership and transparency across the value chain.
• Finance, Controlling & Performance Management: Built an integrated finance and controlling framework with clear KPI structures to manage profitability, OPEX and cash flow. Developed a rolling forecast model and established robust reporting mechanisms as a basis for strategic decisions at the C-level.
• Working Capital, Liquidity Management & Treasury: Optimized working capital and managed the cash conversion cycle through targeted measures in inventory, receivables and payables management. Established an integrated treasury architecture for active liquidity planning and strengthening financial flexibility.
• Global Integration & ERP Transformation: Led the global harmonization of systems and processes by implementing a scalable ERP platform. Promoted synergies and transparency across borders to strengthen the global finance architecture.
• Growth Strategy, Efficiency Improvement & Executive Sparring: Responsible for designing and implementing group-wide initiatives for cost reduction, efficiency gains and sustainable growth, directly impacting EBITDA and overall financial performance. Worked closely on developing and executing investment strategies, resource allocation and transformation priorities to strengthen long-term competitiveness and return on capital.

• Implemented a group-wide project management and project controlling framework (SAP PPM / SAC)
• Designed an earned value based control system (costs, progress, schedule)
• Integrated quotation, product and financial data into SAP
• Led interdisciplinary teams in agile and hybrid setups

As CFO, responsible for building a scalable financial and corporate structure focused on growth, investment readiness and fundraising. This includes creating all relevant fundraising materials and engaging with potential investors. The main goal is to establish solid structures that prepare the company financially, organizationally and strategically for growth.

• Financial controlling, IT controlling, support of a change process, implementation of new cost center and cost unit structures, adjustment of finance workflow, IT budget planning and budget tracking, CAPEX, OPEX (HGB, SAP, XFlow; trading group) (since 2024-09-01)
• Project controlling, contract controlling, project contribution margins, project accruals for monthly and quarterly closing, reporting, accounting (HGB, Datev; advertising agency group) (2024-06-01 to 2024-06-30)
• Financial controlling support in a group environment; vacancy cover, operational controlling, revenue accrual in the year-end closing, process optimization, support for new ERP implementation, introduction of new reporting (KPIs, cost center accounting, service charge allocations), support of a change process/restructuring/reorientation (IT services) (2022-01-01 to 2024-09-30)
• Financial controlling with focus on working capital, cash flow projection, SOX testing (US advertising agency group, shared service) (2023-11-01 to 2024-05-31)
• FP&A, financial modelling, balance sheet planning (Lucanet) in an international corporate environment (solar industry) (2023-09-01 to 2023-11-30)
• Vacancy cover, overall commercial responsibility; operational accounting (Datev), collaboration with external tax advisor/auditor, coordination with British parent company (advertising agency) (2023-04-01 to 2023-08-31)
• Support for the general ledger team in a service group (US GAAP, SAP, Lucanet); preparation of HGB financial statements, reconciliation and submission of VAT returns, accounts reconciliations, support during tax audit (US media group) (2023-01-01 to 2023-06-30)
• Operational commercial oversight; financial controlling, operational accounting (Datev, Datev Unternehmen Online), collaboration with external tax advisor/auditor (film production) (2021-04-01 to 2023-02-28)
• Planning and budgeting, introduction of KPIs; structuring of monthly profit and loss statements and advising the management (digital agency) (2021-03-01 to 2023-01-31)
• Inventory and concept development for product and project controlling as well as implementation (gaming agency) (2022-10-01 to 2022-12-31)
• Financial controlling and improvement of accounting processes, redefinition of KPIs/controlling (event agency) (2021-08-01 to 2022-12-31)
• Reporting, financial controlling, ERP system change (easyJob), process optimization, realignment of KPIs, operational accounting, ensuring a smooth document flow (advertising agency group) (2022-04-01 to 2022-10-31)
• Vacancy cover of operational controlling/project controlling; revenue accrual in monthly closing (IT service provider/digital agency in a group environment) (2021-06-01 to 2021-12-31)
• Software selection and implementation of ERP system with a focus on digital workflow/remote work, interface to Datev, Datev Unternehmen Online (design agency) (2021-03-01 to 2021-12-31)

• Supporting integration testing

• Writing and creating the cut-over script

• Conducting workshops to clarify requirements

• Gathering business requirements

• Business process modeling

• IT design

• Project planning

• Supporting migration tests

• Executing a greenfield S/4HANA conversion. A DATEV application and an AS400 are to be replaced by an S/4HANA system in a public cloud. The DATEV system runs the general ledger and accounts payable. The AS400 handles accounts receivable and business partners. The payables and receivables will be migrated to S/4HANA and the DATEV solution decommissioned.

• Conducting e-commerce courses covering basics, digital business models & trends, competitor analysis, product casting, shop P&L, minimum viable product process, funnel & conversion rate optimization, shop platform evaluation, first steps with Shopify, shop structure setup, payment & shipping systems, ERP & interfaces, fulfillment, process optimization, customer centricity, affiliate marketing

• Location: Hamburg, Germany and Copenhagen, Denmark
• Invoice recording and posting in SAP R/3
• Preparation of monthly, quarterly, and monthly financial statements
• Account reconciliation, including analysis and correction of errors, reversal of postings, and troubleshooting
• Software: SAP R/3, DK-GAAP

• Traditional financial accounting under HGB & IFRS
• Preparation of monthly and annual financial statements
• Reporting
• ERP: Microsoft Dynamics D365

• Formal review according to accounting standards (e.g. IDW, HGB, IFRS)
• Arithmetic accuracy check
• Plausibility check of key figures (balance sheet, P&L, cash flow)
• Cross-reference and reconciliation check
• Consistency and completeness control
• Final editing (spelling and grammar)

• Part-time freelance support for the recruiting team of a consumer goods company, 100% remote
• Operational support in filling open positions
• Strategic cooperation in the further development of recruiting activities