Martin T. - Consultant

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Pöcking, Germany

Experience

Jul 2025 - Present

6 months

Consultant

Enercity AG

Operational controlling and reporting support
Planning and support for setting up sales management

Apr 2024 - Mar 2025

1 year

Project Manager

Privat

Project management of energy-efficient building renovation to a zero-energy house
Trades: roof, windows, facade insulation, central building ventilation, heat pump, PV power feed-in

Jan 2023 - Mar 2024

1 year 3 months

Consultant

Telefonica / o2

Optimization of reporting structures and KPI management in the customer sales business for existing customers
Redesign of inbound and outbound partner bonus and compensation models

Apr 2021 - Mar 2023

2 years

Advisor, Change Manager, Consultant

Dorsch Gruppe

Defining requirements for strategic and operational controlling in the context of ERP implementation
Workshops to set up standard project structures for project controlling of HOAI fixed-price and fee-based projects
Supporting the change management process with stakeholder management and preparing information for the management board
Redefining processes and interfaces
Developing solution proposals for commercial issues
Representing controlling in the ERP Implementation Board and preparing decision proposals

Jul 2020 - Mar 2021

9 months

Consultant

1&1 Internet SE

Setting up, managing and monitoring retention measures in the B2B business
Data analysis of churned existing customers and preparation of business cases
Coordination with product management, finance and operations
Providing retention reporting

Jan 2019 - Dec 2019

1 year

Consultant

1&1 Internet SE

Definition of functional requirements and creation of a KPI map for the existing customer business
Definition of KPI calculation logic and implementation in Microsoft Power BI Desktop
Building KPI reporting for campaign pre- and post-calculation
Definition of data and reporting requirements for stakeholder interfaces
Building a device forecast model including interim and final calculations and benchmark analysis

Oct 2018 - Dec 2018

3 months

Consultant, Interim Manager

1&1 Internet SE

Support for finance and budget planning of Mobile Business 2019
Modeling, consolidation and data validation

Jan 2018 - Sep 2018

9 months

Consultant, Interim Manager

1&1 Internet SE

Support in existing customer campaign management (planning, data selection, data provisioning, monitoring)
Building sales channel KPI reporting
Creation of business cases and execution of special analyses

Apr 2017 - Mar 2022

5 years

Munich, Germany

Project Manager

Private

Renovation concept and renovation management of a mixed-use multi-tenant building (11 residential and commercial units)
Investment calculation and yield increase concept, including tax model
Tenant eviction, multi-phase renovation planning and construction management (HVAC, masonry, drywall, windows, electrical, facade insulation)
Development of a rental concept
Goal: increase net rental yield per unit by 80–100%
Lease contract drafting and leasing
Utility cost optimization and preparation of utility bills

Apr 2017 - Dec 2017

9 months

Cologne, Germany

Consultant, Interim Manager

Unitymedia

Planning of sales commissions for various sales channels
Development of a CPO calculation model
Setup of planning structures

Jul 2016 - Mar 2017

9 months

Consultant, Interim Manager

Hays Technology Solutions

Assessment of the current state and requirements gathering for contract business
Development of best practices (project structure, performance tracking, progress determination)
Definition of commercial and organizational requirements for project evaluation after PoC or Completed Contract
Support of the internal change management process
Know-how transfer for ongoing costing

Apr 2015 - Jun 2016

1 year 3 months

Consultant, Interim Manager

1&1 Internet SE

Support in setting up a service department between product management and sales/customer management operations
Analysis of the current reporting situation and improvement of operations management reporting
Creation of KPI reporting for performance control of call center sales channels (prevention, retention), BI interface
Recruitment and on-the-job training of new team members in performance management
Analysis and evaluation of a service provider commission model and presentation of a revised model

Oct 2014 - Mar 2015

6 months

Consultant

Hempdiol.com; Abidiol Phytoceuticals

Creation of a wholesale and retail business plan for CBD dietary supplements
Development and validation of a financial business model
Preparation of information for investors and conducting investor meetings

Apr 2014 - Dec 2014

9 months

Program Manager

RheinEnergie AG

Coordination and mediation between affiliated companies (energy utilities, metering service providers, telecommunications companies)
Preparation, coordination, and facilitation of workshops
Analysis and preparation of results and derivation of recommendations for action

Oct 2013 - Mar 2014

6 months

Consultant, Interim Manager

Heinl Bau GmbH

Analysis of commercial processes at the customer interface (from proposal phase to billing)
Development and implementation of workflows to reduce paper-based processes by 95%
Implementation in the industry software BauAV and employee training
Interim project management of smaller construction projects and establishment of best practices for quality improvement
Result: complete transition of all processes to digital communication; reduction of execution errors through best practices

Oct 2012 - Sep 2013

1 year

Project Lead, Project Manager, Consultant

nkt cables group

Workshops and interviews to gather all requirements for an integrated full-cost calculation for large land and sea cable projects
Definition of calculation logics for the entire value chain and setup of standard project structures
Creation of a blueprint documentation as a basis for a software selection process
Regular status presentations to the management board
Result: holistic, value-chain-wide calculation logic for the transformation from a product-oriented to a project-oriented manufacturer & service provider

Apr 2012 - Dec 2012

9 months

Consultant

Kabel Deutschland (Vodafone)

Development of an integrated campaign management for cause-based performance measurement
Creation of performance KPIs
Implementation within an Excel performance planning tool
Creation of documentation for performance planning, measurement, and optimization
Result: performance-oriented campaign management across product areas

Oct 2011 - Jun 2012

9 months

Consultant

Repower Systems AG (Senvion SE)

Development of a "slice-and-dice" controlling approach for project monitoring (region, country, size class, responsibility)
Development of a driver-tree-based project P&L with risk assessment using revised KPIs
Implementation of an Excel-based project controlling and tracking dashboard (SAP data) for branches and management
Development of a simplified cash-in/cash-out flow controlling for project business

Apr 2011 - Mar 2012

1 year

Interim Manager

RheinEnergie AG

Organization, preparation, and execution of workshops for internal change projects (sales, organizational structure, products)
Workshops to develop product ideas (smart metering, smart energy)
Documentation, summary of results, and creation of recommendations for action
Facilitation of idea workshop "Service Portal" as a customer retention tool

Jan 2010 - Jun 2010

6 months

Consultant

Repower Systems SE (Senvion SE)

Restructuring and increase of automation level in sales controlling
Creation of new KPIs and development of new sales controlling reports
Improvement of interfaces between controlling and sales
Workshops to improve CRM and integration between controlling and sales
Concept to support sales with stage-gate sales process management structures
Result: significantly improved sales controlling structures and stronger integration between sales and controlling

Jul 2008 - Mar 2011

2 years 9 months

Consultant, Interim Manager

1&1 Internet AG

Set up product costing and product controlling for mobile services (PnL management)
Budgeting and forecasting for mobile services up to gross profit or EBITDA
Supported the transition to an MVNO model and the negotiations with network providers
Responsible for annual and quarterly planning as well as forecasting
Developed and optimized product campaigns with product management
Operational product controlling and reporting
Built and implemented a management business case scoring system

Jul 2008 - Mar 2009

9 months

Interim Manager

1&1 Internet AG

Conducted DSL product controlling and campaign costing
Developed and aligned products and product strategy with product management
Prepared product and campaign reporting for management

Jul 2007 - Jun 2008

1 year

Interim Manager

Telekom / T-Mobile

Re-designed and simplified the channel profitability calculation for the mobile business
Built a driver tree model and a KPI map for root-cause analysis
Developed an overall concept including standard reporting to map value contributions by sales channel and product
Defined requirements and supported a test/demo BI project; created blueprint documentation
Result: A best-practice controlling solution ready for rollout; reduced reporting volume by 80%

Oct 2006 - Jun 2007

9 months

Project Manager, Consultant

Gato AG

Led an interdisciplinary team to develop a tourism master plan (US$ 500 million investment volume)
Collected current tourism data and developed a 15-year forecast
Developed the product strategy and performed pro forma profitability and investment calculations
Coordinated with UAE business partners
Result: High-quality team outcome in a complex situation

Apr 2006 - Dec 2006

9 months

Consultant

DELL Germany

Activated the B2B online sales channel for the 45-person large corporate account team
Developed an overall strategy to increase channel revenue
Established account tracking with suitable performance metrics
Conducted customer analysis, segmentation, and developed segment strategies
Implemented strategies and processes and managed the change process
Coached team members, managed critical key accounts, and performed ongoing performance measurement
Result: Improved performance by 20% within 6 months

Jul 2005 - Mar 2006

9 months

Interim Manager

eSearch Vision S.A.

Founded eSearchVision Germany GmbH and established structural framework (contracts, T&Cs, sales materials, CRM, sales controlling, processes)
Analyzed customer potential, drove proactive business development and sales
Built a high-quality prospect portfolio with advanced lead status
Recruited sales staff and general manager for Germany
Result: operational break-even after 7 months; acquired contracts worth ~4M EUR

Jan 2005 - Jun 2005

6 months

Project Manager

Hotel Dynamics (Wyndham Worldwide)

Managed an international team to develop a product and multi-brand service concept including the sales pitch
Developed the sales strategy and business plan with a 3-year financial plan and risk analysis
Result: premium-quality service concept with projected 3-year EBITDA in the mid double-digit million USD range

Oct 2004 - Dec 2004

3 months

Consultant

HeinlBau

Created a real estate investment calculation model based on complete financial plans
Evaluated and conducted business assessments of multiple investment alternatives and scenarios

Apr 2004 - Sep 2004

6 months

Consultant

Hotel Dynamics (Wyndham Worldwide)

Set up management reporting to monitor HD EMEA marketing and revenue programs
Integrated the reporting structures into the corporate framework
Temporarily took over marketing program controlling
Designed voucher-based revenue enhancement programs and products
Introduced an operational CRM sales-phase model, providing coaching and support during the change process
Result: clear insight into the economic mechanisms and a valuable contribution to operational integration within the group

Apr 2004 - Sep 2004

6 months

Consultant

Superlube Paca GmbH

Analyzed existing sales structures, processes, and performance by product and customer segments
Developed a simple stage-gate logic to manage nationwide field sales representatives
Result: short-term increase in sales performance after implementing the stage-gate process

Jan 2004 - Jun 2004

6 months

Interim Manager

RCI Europe (Wyndham Worldwide)

Implementation of a solution sales methodology and sales controlling for the pan-European sales team
Business modeling of customer programs and commercial evaluation

Jun 2003 - Present

22 years 7 months

Pöcking, Germany

Self-employed Interim Manager & Consultant

Martin Tretter Interim Management & Consulting

Operational and strategic management, finance & controlling, performance management
Sales, business development, program and project management
Industries: telecommunications, energy, construction and real estate, project-based plant engineering (wind power, cables), hardware & software, agency business (industrial design, online), tourism, project-based service providers

Jan 2001 - Sep 2003

2 years 9 months

Senior Sales Manager

Unit4 Agresso Business Software

Building a sales pipeline
Business development and management of the entire solution sales process for premium ERP systems for service companies
Conducting business process analyses for sales; coordinating pre-sales and technical feasibility studies
Developing customer group-specific product and sales strategies for professional services and research institutes

Jan 2000 - Dec 2000

1 year

New York, United States

Head Product Marketing Manager and Project Manager

Brandfarm, Inc. / room12, Inc.

Building the online presence of room12.com and coordinating website design and service procurement in line with the business plan
Responsible for design strategy and defining front-end user processes for the online booking system
Designing marketing strategies aligned with the system's targeting features

Oct 1997 - Jan 2000

2 years 4 months

United States

Senior Project & Account Manager

frogdesign, Inc.

Business development and leading numerous service projects in product design and branding with P&L responsibility (7-figure US$ range)
Project manager for the company-wide rollout of SAP R/3: leading the concept phase, implementing reorganization measures, coordinating system rollout at five sites (PS, SD, FI-CO, HR)
Site analysis for the production facility of a German company in the USA
Key role in the pilot project with SAP America to develop a pre-configured client for the mid-market 'Professional Services' segment
Achievements: managing large multicultural and interdisciplinary teams; economically delivering interdisciplinary projects; successfully leading the ERP implementation in a service organization

May 1993 - Sep 1997

4 years 5 months

Munich, Germany

Head of Controlling / IT; Project Controller; Commercial Assistant

MGS GmbH

Assisted company management with business-related issues
Responsible for commercial project controlling of real estate projects, working closely with technical project management
Responsible for implementing and running corporate IT (45 workstations, 3 servers)
Designed and implemented a management and project information system
Business modeling: developed models to evaluate real estate investments