Fritz Rathjen - Concept development and project support for a VoIP-UCC telecommunications solution

Q: Where is Fritz based?

Fritz is based in Pfaffenhofen an der Ilm, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Fritz speak?

Fritz speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Fritz have?

Fritz has at least 42 years of experience. During this time, Fritz has worked in at least 19 different roles and for 21 different companies . The average length of individual experience is 2 years and 11 months . Note that Fritz may not have shared all experience and actually has more experience.

Q: What is Fritz's latest experience?

Fritz's most recent position is Concept development and project support for a VoIP-UCC telecommunications solution at Bundesweiter Augenklinik Verbund .

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

In recent years, Fritz has worked for Bundesweiter Augenklinik Verbund , Automobil Kreditbank , Bundesstiftung , Klinik , and City of Munich .

Q: Which industries is Fritz most experienced in?

Fritz is most experienced in industries like Telecommunication , Information Technology , and Government and Administration . Fritz also has some experience in Banking and Finance , Healthcare , and Retail .

Q: Which business areas is Fritz most experienced in?

Fritz is most experienced in business areas like Project Management , Product Development , and Sales . Fritz also has some experience in Information Technology , Strategy , and Procurement .

Q: Which industries has Fritz worked in recently?

Fritz has recently worked in industries like Telecommunication , Information Technology , and Government and Administration .

Q: Which business areas has Fritz worked in recently?

Fritz has recently worked in business areas like Information Technology , Project Management , and Strategy .

Recommended expert

Pfaffenhofen an der Ilm, Germany

Experience

Nov 2021 - Sep 2022

11 months

Germany

Concept development and project support for a VoIP-UCC telecommunications solution

Bundesweiter Augenklinik Verbund

As-is analysis of the existing heterogeneous telecommunications infrastructure (128 locations)
Requirements analysis for call center solution and VoIP/Unified Collaboration and Communication services
Creation of a solution proposal and technical concept
Tendering of new services
Contract negotiations
Support during the pilot phase

Jul 2021 - Sep 2023

2 years 3 months

Germany

Concept development and project support for a VoIP-UCC telecommunications solution

Automobil Kreditbank

As-is analysis of the existing Unify telecommunications infrastructure
Requirements analysis for VoIP and Unified Collaboration and Communication services
Creation of a solution proposal and technical concept
Tendering of new services
Contract negotiations
Support during implementation

Feb 2021 - Jun 2021

5 months

Berlin, Germany

Concept development for a VoIP-UCC communication infrastructure

Bundesstiftung

As-is analysis of the existing telecommunications infrastructure
Requirements analysis for VoIP / Unified Collaboration and Communication services
SWOT and cost-benefit analysis
Creation of a solution concept

Jan 2021 - Jun 2021

6 months

Germany

Concept development for an ALL-IP migration

Klinik

As-is analysis of the existing telecommunications infrastructure
Requirements analysis for ALL-IP
Market survey
Cost-benefit analysis

Oct 2020 - Jun 2021

9 months

Germany

Concept development and tendering for a VoIP-UCC communication infrastructure with patient infotainment applications

Klinik

As-is analysis of the existing Unify telecommunications infrastructure
Requirements analysis for VoIP / Unified Collaboration and Communication services and patient infotainment system
Cost-benefit analysis
Creation of a solution concept
Preparation of tender documents
Supplier negotiations
Collaboration on contract documents
Support during implementation

Dec 2019 - Mar 2020

4 months

Germany

Concept development and error analysis for a VoIP-UCC communication infrastructure

Nationwide laboratory service provider in healthcare

As-is analysis of the existing Unify telecommunications infrastructure
Recording and analysis of errors in the existing infrastructure
Development of a telecommunications concept for a VoIP-UCC solution and the corresponding provider integration

Aug 2019 - Jun 2020

11 months

Support for the feasibility study and implementation of AI-powered call handling and distribution

Software house and Association of Statutory Health Insurance Physicians

As-is analysis of the existing Alcatel Lucent Enterprise telecommunications infrastructure
Requirements analysis
Clarification of technical feasibility with the involved telecom vendors
Support during the implementation phase

Mar 2018 - Present

8 years 1 month

Munich, Germany

Concept development and project support for a VoIP-UCC telecommunications solution

City of Munich

As-is analysis of the existing Unify telecommunications infrastructure
Requirements analysis for VoIP and Unified Collaboration and Communication Services
Development of a technical, training, migration, and rollout concept
Definition of requirements for IT service providers to prepare tenders
Review and analysis of processes and the current telecommunications infrastructure and development of recommendations
Clarification of requirements
Determination of strategic planning
Comparison of alternatives
Recording and analysis of the existing telecommunications technologies from AVAYA, Unify, Voxtron, Elmeg
Documentation of results
Creation and presentation of the requirements analysis
Support in market research
Preparation of documents for the Europe-wide tender for an IT service provider
Development of the following concepts: technical concept for VoIP-UCC, security concept, rollout concept, emergency call concept, training concept, creation of training videos
Support of the Europe-wide tender, formulation of technical requirements
Support during rollout

Nov 2017 - Dec 2018

1 year 2 months

Munich, Germany

Project management for the new and expansion installation of a VoIP telecommunications solution

Investment management company (MunichRe/MEAG)

New installation of network switches
New installation of the ASC call recording system
Relocation of trading areas with IPC solution
Expansion of the existing Alcatel Lucent Enterprise VoIP system to an additional location and relocation of about 1,000 employees
Release upgrade
Project planning
Scheduling and process planning and control
Coordination of installation steps with the companies involved
Coordination of processes with the overall project management and subproject management
Schedule and cost control
Acceptance of installations
Billing and cost-effectiveness calculations

Aug 2017 - Sep 2017

2 months

Germany

Concept development and Europe-wide public tender for a CTI and UC solution

Association of Statutory Health Insurance Physicians

Concept development
Preparation of tender documents (requirements specification, evaluation matrix)
Review and analysis of processes and the current telecommunications infrastructure
Clarification of requirements
Determination of strategic planning
Comparison of alternatives
Recording and analysis of existing telecommunications technologies from Alcatel, AVAYA, Microsoft Skype for Business, and estos
Technical and economic comparison of the systems
Documentation of results
Creation and presentation of a concept
Preparation of documents for a Europe-wide tender

Feb 2017 - May 2017

4 months

Germany

Concept development for a patient infotainment and VoIP telecommunication solution

Clinic

Concept development

Jan 2016 - May 2016

5 months

Hamburg, Germany

Concept development for a VoIP telecommunication solution

Hamburg Airport AIRSYS GmbH

Technical and economic evaluation of possible solutions
Assessment of the installed base and exploration of innovation opportunities
Concept development
Preparation of presentations
Clarification of Hamburg Airport’s requirements
Determination of AIRSYS’s strategic planning
Rough survey and analysis of the operations department’s tasks at AIRSYS
Determination of capacity and workload
Rough estimation of operating costs
Comparison of alternatives
Survey and analysis of existing Unify telecommunication technology (HiPath 4000 and OpenScape Voice for about 2800 endpoints)
Determination of necessary investments for a rollout at Hamburg Airport
Technical and economic comparison of the systems with other manufacturers
Documentation of results as recommended actions
Evaluation of future viability considering technical specifics such as alarm systems, external phones, and long ranges

Jun 2015 - Dec 2015

7 months

Concept development for a VoIP telecommunication solution

Arcelor Mittal (steel mill)

Technical and economic evaluation of possible solutions
Assessment of the installed base and exploration of innovation opportunities
Concept development
Preparation of presentations

Jan 2015 - Jul 2016

1 year 7 months

Rostock, Germany

EU-wide tender for a patient infotainment and VoIP telecommunication solution

Südstadt Rostock Hospital

Concept development
Preparation of tender documents for an EU-wide call for tenders
Evaluation of bids
Award recommendation

Jan 2014 - Dec 2014

1 year

Channel sales support

Unify

Onboarding new staff in the Deutsche Telekom / T-Systems channel
Development of marketing measures
Development of incentive concepts
Training Telekom sales staff on Unify products (OpenScape Business, OpenScape 4000, HiPath 3000, HiPath 500) incl. UC and ContactCenter solutions

Jan 2013 - Dec 2013

1 year

Bonn, Germany

Cloud-based telecommunications and patient infotainment solution

Reha Klinik

Concept development
Tendering
Awarding

Jan 2012 - Dec 2013

2 years

Implementation of a new contact center solution

Bausparkasse Schwäbisch Hall

Creation of reporting requirements
Testing the reporting software
Support during the pilot phase
Go-live support
Integration of the new reporting functions into regular operations

Jan 2012 - Dec 2013

2 years

Hamburg, Germany

Concept development for a telecommunications solution (one number concept)

EDEKA Gruppe Hamburg

Market analysis
Technical and economic evaluation of possible solutions
Concept development and presentation

Jan 2012 - Dec 2012

1 year

Telecommunications and unified communication solution

Automobilzulieferer

Detailed gathering and alignment of requirements and specifications
Analysis of current communication processes
Definition of conceptual foundations
Planning the required system components and quantities
Cost estimation for the new telecom system
Presentation of the concept as a decision-making document
Creation of a neutral requirements specification
Technical and commercial evaluation of proposals
Creation of a shortlist
Final negotiation with up to two bidders

Jan 2011 - Dec 2012

2 years

Stuttgart, Germany

Implementation of a new customer service organization

VPV Stuttgart

Setup of a networked service center
Process definition
Creation of a technology requirements specification

Jan 2010 - Present

16 years 3 months

Pfaffenhofen an der Ilm, Germany

Senior Consultant

Rathjen Consulting

Technical and business consulting on telecom systems and networks for medium-sized and large companies
Consulting, requirements and functional specifications, vendor selection, controlling/reporting, project leadership, project management, scheduling, deadline tracking, communication technology, rollout planning and execution
Unified Communication and Collaboration, CRM, call/contact centers, CTI, VoIP, managed services, product definition and business development
Strategic consulting, management consulting, company analysis, process analysis and optimization
Implementation and testing of contact centers and preparing tenders for VoIP systems and solutions
Expertise in telecom and IT technologies (IP/ISDN, VoIP, UC), market knowledge and IT market evolution
Knowledge of marketing, product launch and sales processes of large resellers
Presentation and negotiation skills at CxO level and business case development
Coaching, mentoring and team leadership in decentralized organizations

Jan 1984 - Dec 2010

27 years

Senior Consultant / Project Manager

Siemens

Led the large-scale project: Federal Employment Agency (1988-1992)
Offer preparation, sales negotiations and implementation of about 1000 telecommunications systems for the Federal Employment Agency through Deutsche Telekom
Support for Deutsche Telekom’s key account management
Managed 5 direct reports
Responsible for meeting sales targets, revenue goals and cost budgets
Launched Octopus E (Hicom 150/Hicom 300) and Octopus F (HiPath 3000/4000) products and solutions at Deutsche Telekom
Defined product requirements to customize the Hicom150/300 and HiPath3000/4000 for Deutsche Telekom
Acquired and deepened technical knowledge in telecommunications systems and networks

Sales and Product Management

DeTeWe

Acquired and deepened technical knowledge in telecommunications systems and networks

Sales and Product Management

Nixdorf Computer

Acquired and deepened technical knowledge in telecommunications systems and networks

Concept and requirements specification development followed by bid evaluation for a VoIP telecommunications solution

Fashion retail chain

Concept development
Preparation of tender documents (specification, price matrix)
Evaluation of offers
Support during contract negotiations

Industry Experience

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

Experienced in Telecommunication, Information Technology, Government and Administration, Banking and Finance, Healthcare, and Retail.

Telecommunication

Information Technology

Government and Administration

Banking and Finance

Healthcare

Retail

Business Area Experience

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

Experienced in Project Management, Product Development, Sales, Information Technology, Strategy, and Procurement.

Project Management

Product Development

Sales

Information Technology

Strategy

Procurement

Summary

Since 2010, providing technical and economic consulting in the field of telecommunications systems and networks for medium-sized and large companies, based on knowledge from previous work experience and ongoing training as a listed consultant at Alcatel-Lucent Enterprise, AVAYA, CISCO, Microsoft, Mitel, Unify and Telekom Deutschland.

Through work in sales and product management in various divisions of three telecommunications companies (DeTeWe, Nixdorf Computer, Siemens), gained and deepened technical knowledge in telecommunications systems and networks.

Skills

Experience And Knowledge

Consulting
Requirements And Specifications
Vendor Selection
Controlling/reporting
Project Leadership
Project Management
Scheduling
Schedule Tracking
Communication Technology
Rollout Planning And Execution

Cloud Solutions And Systems

Cloud Solutions
Unify
Alcatel
Avaya
Cisco
Skype For Business
Teams
Nfon
Pbx Systems
Patient Infotainment Bewatec
Clinicall
Siemens Systems

Topics

Unified Communication And Collaboration
Customer Relationship Management
Call/contact Center
Cti (Computer Telephony Integration)
Voip (Voice Over Ip)
Operating Models (Managed Services)
Product Definition
Business Development

Services

Strategic Consulting
Management Consulting
Company Analysis
Process Analysis And Optimization
Project Management
Implementation And Testing Of Contact Centers
Tenders For Voip Systems And Solutions

Technical Expertise

Telecommunications And It Technologies, Components And Structures Of Telecom Networks And It Solutions, Especially Voip And Contact Center, Unified Communication And Collaboration Solutions, Fixed Network Technology (Ip / Isdn)
Knowledge Of Uc, Telecommunications And It Markets (Requirements, Evolution)
Knowledge Of Marketing And Product Launch Processes Of Large Resellers (Process Steps, Chains)
Knowledge Of Sales Organizations And Sales Methods Of Large Resellers

Methodical Competence

Presentation And Negotiation Skills At Cxo Level
Business Case Development With Tool Support
Project Management Skills
Problem-solving Approach, Development Of Innovative Solutions
Coaching And Mentoring Skills As Well As Team And Leadership Skills
Methodology And Didactics Of Training Programs

Skills

Analytical And Consulting Skills, Structured Approach, Simple Explanation Of Complex Relationships
Entrepreneurial Thinking
Creativity And Result Orientation
Assertiveness And Decision-making Skills
Customer Focus, Developing Partnership Relationships
Flexibility And Teamwork
Staff Leadership And Coaching In Decentralized Organizations

Languages

German

Native

English

Advanced

Education

Diploma in Business Education · Business administration studies with a focus on industrial management and business education

Statistics

Experience

Total positions 25

Experience in Telecommunication 42 y

Avg length 2 y 9 m

Longest experience 26 y 11 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Concept development and project support for a VoIP-UCC telecommunications solution, Concept development for a VoIP-UCC communication infrastructure, Concept development for an ALL-IP migration

Main industries Telecommunication, Information Technology, Government and Administration

Main business areas Project Management, Product Development, Sales

Profile

Created

August 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Fritz based?

Fritz is based in Pfaffenhofen an der Ilm, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Fritz speak?

Fritz speaks the following languages: German (Native), English (Advanced).

How many years of experience does Fritz have?

Fritz has at least 42 years of experience. During this time, Fritz has worked in at least 19 different roles and for 21 different companies. The average length of individual experience is 2 years and 11 months. Note that Fritz may not have shared all experience and actually has more experience.

What roles would Fritz be best suited for?

Based on recent experience, Fritz would be well-suited for roles such as: Concept development and project support for a VoIP-UCC telecommunications solution, Concept development for a VoIP-UCC communication infrastructure, Concept development for an ALL-IP migration.

What is Fritz's latest experience?

Fritz's most recent position is Concept development and project support for a VoIP-UCC telecommunications solution at Bundesweiter Augenklinik Verbund.

What companies has Fritz worked for in recent years?

In recent years, Fritz has worked for Bundesweiter Augenklinik Verbund, Automobil Kreditbank, Bundesstiftung, Klinik, and City of Munich.

Which industries is Fritz most experienced in?

Fritz is most experienced in industries like Telecommunication, Information Technology, and Government and Administration. Fritz also has some experience in Banking and Finance, Healthcare, and Retail.

Which business areas is Fritz most experienced in?

Fritz is most experienced in business areas like Project Management, Product Development, and Sales. Fritz also has some experience in Information Technology, Strategy, and Procurement.

Which industries has Fritz worked in recently?

Fritz has recently worked in industries like Telecommunication, Information Technology, and Government and Administration.

Which business areas has Fritz worked in recently?

Fritz has recently worked in business areas like Information Technology, Project Management, and Strategy.

What is Fritz's education?

Fritz attended education in Business administration studies with a focus on industrial management and business education.

What is the availability of Fritz?

Fritz is immediately available part-time for suitable projects.

What is the rate of Fritz?

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

How to hire Fritz?

To hire Fritz, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000

750

500

250

Market avg: 760-920 €

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

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