Martin Zeller - Interim Head of Internal Sales

Q: Where is Martin based?

Martin is based in Güntersleben, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Martin speak?

Martin speaks the following languages: German (Native), English (Advanced), French (Elementary) .

Q: How many years of experience does Martin have?

Martin has at least 41 years of experience. During this time, Martin has worked in at least 25 different roles and for 30 different companies . The average length of individual experience is 1 year and 5 months . Note that Martin may not have shared all experience and actually has more experience.

Q: What is Martin's latest experience?

Martin's most recent position is Interim Head of Internal Sales at Trepel Airport Equipment GmbH, Mafi Transport-Systeme GmbH .

Q: What companies has Martin worked for in recent years?

In recent years, Martin has worked for Trepel Airport Equipment GmbH, Mafi Transport-Systeme GmbH , INNEXIS (formerly pharmaserv GmbH) , Scheuerle Fahrzeugfabrik GmbH , Energiekonzepte Deutschland GmbH , and FAWEMA GmbH .

Q: Which industries is Martin most experienced in?

Martin is most experienced in industries like Media and Entertainment , Manufacturing , and Transportation . Martin also has some experience in Professional Services , Healthcare , and Retail .

Q: Which business areas is Martin most experienced in?

Martin is most experienced in business areas like Operations , Strategy , and Customer Service . Martin also has some experience in Sales , Project Management , and Marketing .

Q: Which industries has Martin worked in recently?

Martin has recently worked in industries like Manufacturing , Energy , and Pharmaceutical .

Q: Which business areas has Martin worked in recently?

Martin has recently worked in business areas like Strategy , Operations , and Project Management .

Recommended expert

Güntersleben, Germany

Check rate

Experience

Mar 2026 - Jul 2026

5 months

Tauberbischofsheim, Germany

Interim Head of Internal Sales

Trepel Airport Equipment GmbH, Mafi Transport-Systeme GmbH

Leading the Internal Sales and Sales Steering teams
Change management
Developing and appointing the Head of Internal Sales
Clearing backlogs (inquiries, orders)
Leading and taking part in several cross-functional projects
Developing / implementing KPIs, deriving / initiating measures
Further development of Hubspot CRM
Reporting to the CSO

Mar 2025 - Feb 2026

1 year

Marburg, Germany

Interim Senior Director Site Services

INNEXIS (formerly pharmaserv GmbH)

Leading the areas Infrastructure Services, Site Security, Security Center, Plant Fire Brigade, Environment and Waste, and Occupational Medicine
Developing a site agreement including service descriptions, house rules, entry and parking regulations, and emergency management
Preparing all areas for KRITIS
Restructuring and realigning site security
Developing and implementing a future-proof service strategy
Developing and implementing a sales strategy and active selling
Change management
Leading and taking part in several cross-functional projects
Developing / implementing KPIs, deriving / initiating measures
Driving digitization and automation forward
Reporting to management

Nov 2023 - Mar 2025

1 year 5 months

Pfedelbach, Germany

Interim Head of Customer Service, After-Sales-Service Transport

Scheuerle Fahrzeugfabrik GmbH

Leading the teams Technical Support, Field Service, Training, Telematics, Refit, and Spare Parts
Developing and implementing a future-proof service strategy
Developing and implementing a sales strategy and active selling
Building service partners worldwide
Building a worldwide 1st-level support and emergency hotline
Change management
Clearing backlogs (inquiries, orders)
Leading and taking part in several cross-functional projects
Developing / implementing KPIs, deriving / initiating measures
Further development of Salesforce CRM
Revenue responsibility of about 35 million euros
Reporting to the COO

Jun 2023 - Oct 2023

5 months

Leipzig, Germany

Interim Head of Project Support After-Sales-Service

Energiekonzepte Deutschland GmbH

Building and leading the Project Support team
Developing and implementing a future-proof service strategy
Connecting the interfaces to the new department
Change management
Clearing backlogs (inquiries, orders)
Leading and taking part in several cross-functional projects
Developing / implementing KPIs, deriving / initiating measures
Further development of leads middleware
Reporting to the COO

Jun 2022 - May 2023

1 year

Engelskirchen, Germany

Interim Head of After-Sales-Service

FAWEMA GmbH

Leading the After-Sales-Service / internal sales department with commercial administration and engineering
Working with sales, initiating sales-promoting measures
Developing and implementing a future-proof service strategy
Developing and implementing a sales strategy and active selling
Reorganizing the department by function
Optimizing installation and service assignments with internal and external technicians
Change management
Clearing backlogs (quotes, orders, invoices)
Leading and taking part in several cross-functional projects
Developing / implementing KPIs, deriving / initiating measures
Further development of ProAlpha, expanded use of Teams
Revenue responsibility of about 25 million euros
Reporting to the CEO of the group

May 2022 - May 2022

1 month

Munich, Germany

Support for Project Management Operations

Wirelane GmbH

Realignment and optimization of the project plan for creating and implementing the processes to initiate electricity supply for business customers and installation
Analysis and implementation of process outsourcing
Reporting to the Managing Director

Nov 2021 - Apr 2022

6 months

Munich, Germany

Interim Head of Customer Service, After-Sales-Service and Operations

Envision Digital Retail Operations GmbH

Building up and leading the Customer Service / Internal Sales and Operations departments
Cooperation with Sales, initiation of sales-promoting measures
Development and implementation of a sales strategy and active selling
Creation and implementation of the concept for building up the organization
Creation and implementation of the processes to initiate electricity supply and installation
Implementation of installation and service assignments with internal and external technicians
Creation of the annual plan
Analysis and implementation of process outsourcing
Management and control of various service providers, including purchased electrical contractors
Development of KPIs and reports
Reporting to the Managing Director

Aug 2021 - Oct 2021

3 months

Schwalbach am Taunus, Germany

Consultant Telesales

Samsung Electronics GmbH

Creation and implementation of the concept for introducing telesales
Potential analysis of small buying groups
Development of KPIs
Selection of employees for the pilot
Revenue responsibility of approx. 100 million euros
Reporting to the Head of Sales Operations

Oct 2020 - Jul 2021

10 months

Magdeburg, Germany

Consultant Operations, Customer Service

GETEC Holding GmbH

Restructuring and realignment of the back office in technical customer service
Management of the back office at six locations, centralization at two locations
Cooperation with Sales, initiation of sales-promoting measures
Development and implementation of a sustainable service strategy
Development and implementation of a sales strategy and active selling
Optimization of installation and service assignments with internal and external technicians
Change management
Management and participation in several cross-departmental projects
Development / implementation of KPIs, derivation / initiation of measures
Further development / introduction of Navision, call center software
Revenue responsibility of approx. 50 million euros
Reporting to Management

Aug 2020 - Sep 2020

2 months

Rostock, Germany

Project Manager Setup Covid-19 Test Center Frankfurt Airport

Centogene GmbH

Planning and implementation of the processes for handling and testing up to 5,000 people per day
Planning and implementation of logistics
Coordination and implementation of safety regulations with FRAPORT and Lufthansa
Hiring of approx. 50 employees, cooperation with a promotion agency
Creation of the infrastructure at the airport
Development / implementation of KPIs
Reporting to the Managing Director and shareholder

Oct 2019 - Jun 2020

9 months

Bergisch Gladbach, Germany

Interim Head of Customer Service / Internal Sales

Miltenyi Biotec B.V. & Co. KG

Leading, restructuring, and realigning after-sales service / internal sales
Developing and implementing cost-efficient, scalable order processing workflows from order entry to freight forwarding handling
Optimizing warehouses, site logistics, and sample logistics
Working with sales and initiating sales-promoting measures
Leading and taking part in several cross-functional projects
Change management
Developing / implementing KPIs, deriving / initiating measures
Developing / implementing COVID emergency measures
Reporting to the managing director and shareholder

May 2019 - Oct 2019

6 months

Rheine, Germany

Interim Head of Customer Service / Internal Sales

berbel Ablufttechnik GmbH

Leading the Customer Service / Internal Sales area
Virtual consolidation of 3 locations
Optimizing the technical helpdesk, dispatch, and technical field service, clearing an order backlog
Optimizing installation and service assignments with internal and external technicians
Developing and implementing a future-ready service strategy
Developing and implementing a sales strategy and active selling
Building up spare parts supply
Increasing revenue in service contracts and spare parts
Re-activating customers and acquiring new B2B customers
Developing / implementing KPIs, deriving / initiating measures
Further developing / introducing Navision, LogObject
Revenue responsibility of approx. 15 million euros
Reporting to the managing director and shareholder

Apr 2018 - Apr 2019

1 year 1 month

Augsburg, Germany

Interim Head of Service, After-Sales Service Germany

WashTec Cleaning Technology GmbH

Leading and optimizing customer service, technical helpdesk, dispatch, installation, and technical field service
Developing and implementing a future-ready service strategy for the DACH region and parts of the rest of the world
Optimizing installation and service assignments with internal and external technicians
Increasing revenue in service contracts, spare parts, and chemicals
Working with sales and initiating sales-promoting measures
Developing and implementing a sales strategy and active selling
Change management
Developing / implementing KPIs, deriving / initiating measures
Further developing / introducing SAP, Salesforce, ConSol, MobileX, Inopla
Responsibility for 265 employees
Revenue responsibility of 45 million euros
Reporting to the executive board and supervisory board

Jul 2016 - Mar 2018

1 year 9 months

Kaiserslautern, Germany

Interim Head of After-Sales Service / Internal Sales

Supra Foto-Elektronik-Vertriebs GmbH und Protel Dienstleistungs- und Handels GmbH

Leading and optimizing after-sales service and internal sales
Optimizing fulfillment processes in Europe
Standardizing the production process in China
Outsourcing warehouse, logistics, graphics, and IT helpdesk
Optimizing and partly outsourcing the call center
Working with sales and initiating sales-promoting measures
Introducing CC soft- and hardware, PEP tool
Acquiring and supporting key accounts
Expanding e-commerce
Change management
Developing / implementing KPIs, deriving / initiating measures
Further developing / introducing Navision, Citrix
Responsibility for 17 employees
Revenue responsibility
Reporting to shareholders

Jan 2012 - Jun 2016

4 years 6 months

Planegg, Germany

Director Operations and Head of Customer Service Healthcare

ResMed GmbH und ResMed Medizintechnik GmbH

Leading and optimizing customer service, call center, technical service, returns, warehouse, logistics, purchasing, and facility management
Optimizing fulfillment processes, IT helpdesk
Developing and implementing a sales strategy and active selling
Project management for German and European projects
Centralizing 6 service and 3 repair locations
Implementing OTC and e-commerce
Outsourcing sub-processes, managing external service providers
Leading the integration of an acquired oxygen supplier
Change management for ResMed Medizintechnik
Developing / implementing KPIs, deriving / initiating measures
Further developing / introducing SAP, Kumavision, Salesforce, Citrix
Responsibility for 270 employees, including 7 direct reports
Budget responsibility of 15 million euros
Revenue responsibility of approx. 80 million euros
Reporting to the CEO

Apr 2011 - Dec 2011

9 months

Head of Sales and Customer Service

Werner & Pfleiderer Bakery Technologies

Management and optimization of customer services and internal sales
Optimization of the production flow and fulfillment processes
Expansion of e-commerce
Increase in revenue in service contracts and spare parts
Change management
Development / implementation of KPIs, derivation / initiation of measures
Responsibility for 25 employees
Revenue responsibility
Reporting to the Managing Director

Apr 2010 - Mar 2011

1 year

Consulting for SMEs

Bäckerei Filialisten, Autohaus Filialisten, Friseur Filialisten, Lebensmittel Handel, Handwerksbetriebe

Optimization of customer services and sales
Preparation and delivery of workshops

Nov 2008 - Mar 2010

1 year 5 months

Bochum, Germany

Managing Director Service Company

Deutsche Annington Kundenservice GmbH

Setup and management of the company
Financial and strategic responsibility
Project management for restructuring project
Setup and management of the sales, customer service, repair center, and call center
Centralization of 98 service points into 1 service center and 6 sales centers
Optimization of installation and service assignments with internal and external technicians
Optimization of fulfillment processes
Sales marketing and e-commerce setup
Change management
Planning / implementation of processes, definition of interfaces / functions
Development / implementation of KPIs, derivation / initiation of measures
Architectural planning of the centers
Setup of facility management
Preparation and delivery of the go-live
Introduction of SAP CRM, CC software and hardware
Responsibility for 200 employees
Revenue responsibility
Reporting to CEO and COO

Nov 2007 - Oct 2008

1 year

Managing Director

P2 Brief+Paket GmbH & Co. KG

Setup and management of the company, financial and strategic responsibility
Setup and management of sales, customer service and fulfillment processes
Acquisition of key accounts and shareholders
Integration of acquired letter service providers
Development and implementation of logistics
Setup of sales marketing and e-commerce
Development / implementation of KPIs, derivation / initiation of measures
Introduction of sorting software, logistics and route planning software
Project management
Business planning
Preparation and delivery of the go-live
Reporting to shareholders

Feb 2006 - Oct 2008

2 years 9 months

Hanover, Germany

Project Manager

TNT Post AG & Co. KG

Management, recovery and restructuring of acquired companies, financial and partly strategic responsibility in the projects
Setup and management of sales, customer service and fulfillment processes
Acquisition of key accounts
Sales marketing
E-commerce
Change management
Project management
Development / implementation of KPIs, derivation / initiation of measures
Due diligence
Acquisition of properties, facility management
Responsibility for up to 800 employees
Budget responsibility of up to 50 million euros
Revenue responsibility
Reporting to CEO

May 2003 - Jan 2006

2 years 9 months

Managing Director

Frankenbrief Post- und Logistikservice GmbH

Set up and lead the company, with financial and strategic responsibility
Set up and lead sales and customer service (including call center)
Acquire key accounts and cooperation partners
Set up sales marketing and e-commerce
Business planning
Prepare and carry out the go-live
Develop and implement KPIs, derive/initiate measures
Responsibility for 42 employees
Budget responsibility
Revenue responsibility of EUR 6 million
Reporting to the publishing managing director and shareholders

Jun 2002 - Jan 2006

3 years 8 months

Managing Director

Z+S Bamberg und Haßfurt

Lead the company, with financial and strategic responsibility
Optimize delivery structures for the newspaper
Restructure the delivery organization for mail
Develop and implement KPIs, derive/initiate measures
Acquire additional business
Responsibility for 1,400 employees
Budget responsibility of EUR 2 million
Reporting to the publishing managing director and shareholders

May 2002 - Jan 2006

3 years 9 months

Head of Sales

Fränkischer Tag GmbH & Co. KG

Lead the area, with financial responsibility
Set up telesales and the customer service center (including call center)
Acquire key accounts
Sales marketing and e-commerce
Change management
Manage external service providers
Optimize newspaper logistics
Responsible involvement in the relaunch of the newspaper and website
Develop and implement KPIs, derive/initiate measures
Responsibility for 54 employees
Budget responsibility
Revenue responsibility of EUR 40 million
Reporting to the publishing managing director and shareholders

Feb 2001 - Jan 2002

1 year

Starnberg, Germany

Manager Customer Relations

Bonitrus AG

Set up and lead telesales, customer service (including call center) and fulfillment processes
Prepare and carry out the go-live
Responsibility for 4 employees
Budget responsibility of EUR 0.5 million
Reporting to CEO and COO

Sep 1999 - Jan 2001

1 year 5 months

Mörfelden-Walldorf, Germany

Head of CRM

RS Components GmbH

Lead the sales, customer service and repair center areas, with financial responsibility
Key account management
Change management for customer processes
Project management
Optimize processes, interfaces and functions of the centers
Develop and implement KPIs, derive and initiate measures
Responsibility for 100 employees
Budget responsibility of EUR 5 million
Revenue responsibility
Reporting to the managing director

Oct 1998 - Aug 1999

11 months

Nuremberg, Germany

Sales Manager

Hellma Gastronomie-Service GmbH

Management of the department, financial responsibility
Change management for customer processes
Building and leading telesales and customer service (including call center)
Optimization of fulfillment processes
Acquisition and management of key accounts
Project management for the customer service center Schöller
Development / implementation of KPIs, derivation / initiation of measures
Responsibility for 23 employees
Budget responsibility
Revenue responsibility of 20 million euros
Reporting to the Managing Director

Mar 1997 - Sep 1998

1 year 7 months

Frankfurt, Germany

Head of Telesales and Customer Service

Sunday Verlags- und Werbe GmbH

Building and leading the areas of telesales, customer service (including call center) and key account management, financial and strategic responsibility
Preparation and execution of the go-live
Development / implementation of KPIs, derivation / initiation of measures
Responsibility for 15 employees
Budget responsibility
Revenue responsibility of 1.5 million euros
Reporting to the Managing Director

Jan 1993 - Sep 1998

5 years 9 months

Consultant

Agentur Telecoach

Building and optimizing call centers, sales and customer service structures, financial and partly strategic responsibility in the projects
Change management
Project management
Acquisition of key accounts
Development / implementation of KPIs, derivation / initiation of measures
Responsibility for up to 400 employees
Budget responsibility
Revenue responsibility
Reporting to the Managing Director and clients

Jan 1989 - Dec 1992

4 years

Würzburg, Germany

Head of Telesales and Customer Service

Mainpresse Zeitungsverlagsgesellschaft mbH

Building and leading telesales, customer service and the trade fair team in the subscription and advertising sales area, financial and partly strategic responsibility
Key account management
Development / implementation of KPIs, derivation / initiation of measures
Responsibility for 32 employees
Reporting to the Sales Manager

Sep 1984 - Dec 1988

4 years 4 months

Theres, Germany

Sales Manager

MVD-Medienvertrieb

Building and leading sales and production, strategic responsibility
Acquisition of key accounts
Sales marketing
Leading video production
Responsibility for 22 employees
Budget responsibility
Revenue responsibility of 1.5 million euros
Reporting to the Managing Director

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Media and Entertainment, Manufacturing, Transportation, Professional Services, Healthcare, and Retail.

Media and Entertainment

Manufacturing

Transportation

Professional Services

Healthcare

Retail

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Operations, Strategy, Sales, Customer Service, Project Management, and Marketing.

Operations

Strategy

Sales

Customer Service

Project Management

Marketing

Summary

More than 30 years of experience in operational management (as Managing Director, Director, Head of, Project Manager, Consultant)
Successful setup, leadership, and optimization of companies and individual business areas in a wide range of industries with full financial and strategic responsibility

Skills

Professional Skills:
Change Management, Restructuring, Optimization, Project Management, Start-Up
Setup, Leadership, And Restructuring Of After-Sales Service And Customer Service Processes (Order Processing, Complaints And Warranty Handling, Repair Management, Technical Support, Refit, Spare Parts Sales, Field Service, Sales Of Maintenance And Service Contracts, Call Center)
Setup, Leadership, And Restructuring Of Sales Processes (Internal And External Sales, Kam, Telesales, E-Commerce, Otc), Strong Personal Ability In Acquiring And Supporting Key Accounts
Revenue Responsibility For Up To 100 Million Euros
Leadership And Optimization Of The Areas In Fulfillment (Customer Service, Warehouse, Logistics, Purchasing)
Leadership Of The Integration Of Acquired Companies
Successful Introduction Of New Products And Services
Increasing Quality And Efficiency By Using Matrix Organization, 5s, Lean Management, Value Stream Analysis, Continuous Improvement
Introduction And Evaluation Of Kpis, Derivation And Initiation Of Measures
Introduction And Further Development Of Various Erp Systems And Application Software
Experience In Dealing With Works Councils, Shareholders, Supervisory Boards, Executive Boards, Associations, Clubs, Cooperatives, Offices And Authorities
Industry Expertise:
Special Vehicle Construction, Renewable Energy, Special Machine Construction, Vehicle Construction, E-Mobility, Energy Service Providers, Pharmaceutical Parks, Biotechnology, Medical Technology, Mechanical Engineering, Household Appliances, Real Estate Industry, Publishing, Food, Electronics, Postal Services, Logistics, Trade, Financial Services, Industry, Call Center, E-Commerce
Leadership Experience:
Selection, Leadership, Qualification, Training, And Motivation Of 10 To 1,400 Employees Across Different Hierarchy Levels (Department Heads, Division Heads, Group Leaders, Team Leaders, Partly Also The Final Level Directly)
Extensive Experience In Winning Over Employees With Many Years Of Company Tenure For The Change Process
Managing By Objectives (Introduction Of Reflection Meetings, Reviews, And Targets At All Levels)
Personal Skills:
Hands-On Mentality, Flexible, Passionate, Stress-Resistant, Loyal
Strong Customer And Service Orientation
Natural-Born Salesperson
High Emotional And Social Competence

Languages

German

Native

English

Advanced

French

Elementary

Education

Oct 1973 - Jun 1982

Riemenschneider-Gymnasium

Abitur · Würzburg, Germany

Statistics

Experience

Total positions 30

Experience in Media and Entertainment 13.5 y

Avg length 1 y 7 m

Longest experience 5 y 8 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Interim Head of Internal Sales, Interim Senior Director Site Services, Interim Head of Customer Service, After-Sales-Service Transport

Main industries Media and Entertainment, Manufacturing, Transportation

Main business areas Operations, Strategy, Sales

Qualifications

Profile

Created

July 2026

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Have questions? Find more information here.

Where is Martin based?

Martin is based in Güntersleben, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Martin speak?

Martin speaks the following languages: German (Native), English (Advanced), French (Elementary).

How many years of experience does Martin have?

Martin has at least 41 years of experience. During this time, Martin has worked in at least 25 different roles and for 30 different companies. The average length of individual experience is 1 year and 5 months. Note that Martin may not have shared all experience and actually has more experience.

What roles would Martin be best suited for?

Based on recent experience, Martin would be well-suited for roles such as: Interim Head of Internal Sales, Interim Senior Director Site Services, Interim Head of Customer Service, After-Sales-Service Transport.

What is Martin's latest experience?

Martin's most recent position is Interim Head of Internal Sales at Trepel Airport Equipment GmbH, Mafi Transport-Systeme GmbH.

What companies has Martin worked for in recent years?

In recent years, Martin has worked for Trepel Airport Equipment GmbH, Mafi Transport-Systeme GmbH, INNEXIS (formerly pharmaserv GmbH), Scheuerle Fahrzeugfabrik GmbH, Energiekonzepte Deutschland GmbH, and FAWEMA GmbH.

Which industries is Martin most experienced in?

Martin is most experienced in industries like Media and Entertainment, Manufacturing, and Transportation. Martin also has some experience in Professional Services, Healthcare, and Retail.

Which business areas is Martin most experienced in?

Martin is most experienced in business areas like Operations, Strategy, and Customer Service. Martin also has some experience in Sales, Project Management, and Marketing.

Which industries has Martin worked in recently?

Martin has recently worked in industries like Manufacturing, Energy, and Pharmaceutical.

Which business areas has Martin worked in recently?

Martin has recently worked in business areas like Strategy, Operations, and Project Management.

What is Martin's education?

Martin attended Riemenschneider-Gymnasium.

What is the availability of Martin?

Martin is immediately available full-time for suitable projects.

What is the rate of Martin?

Martin's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.