Fritz Rathjen - VoIP-UCC Senior Consultant in Munich

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Pfaffenhofen an der Ilm, Germany

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Experience

Nov 2021 - Sep 2022

11 months

Germany

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

Nationwide eye clinic network

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 a technical concept
Tendering for the 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

Automotive credit bank

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 a technical concept
Tendering for the new services
Contract negotiations
Support during implementation

Feb 2021 - Jun 2021

5 months

Berlin, Germany

Concept development for a VoIP-UCC communications infrastructure

Federal foundation

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

Jan 2021 - Jun 2021

6 months

Germany

Concept development for a migration to ALL-IP

Clinic

As-is analysis of the existing telecommunications infrastructure
Requirements analysis for ALL-IP
Market inquiry
Economic analysis

Oct 2020 - Jun 2021

9 months

Germany

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

Clinic

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

Dec 2019 - Mar 2020

4 months

Germany

Concept development and error analysis for a VoIP UCC communications infrastructure

Nationwide laboratory service provider in healthcare

As-is analysis of the existing Unify telecommunications infrastructure
Recording and analysis of faults in the existing infrastructure
Creation of a telecommunications concept for a VoIP UCC solution and the matching provider connection

Aug 2019 - Jun 2020

11 months

Support with the feasibility study and implementation of AI-supported call handling and distribution

Software company 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 7 months

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
Creation of a specialist, training, migration, and roll-out concept
Definition of requirements for IT service providers as preparation for tenders
Review and analysis of processes and the current telecommunications infrastructure, as well as creation of recommendations for action
Clarification of requirements
Determination of the strategic planning
Comparison of alternatives
Recording and analysis of the existing telecommunications technologies from AVAYA, Unify, Voxtron, Elmeg
Documentation of the results
Creation and presentation of the requirements analysis
Support with market research
Preparation of the documents for the Europe-wide tender for an IT service provider
Development of the following concepts: specialist concept for VoIP UCC, security concept, roll-out concept, emergency call concept, training concept, creation of training videos
Support for the Europe-wide tender, wording of the specialist requirements
Support during roll-out

Nov 2017 - Dec 2018

1 year 2 months

Munich, Germany

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

Investment company (MunichRe/MEAG)

New installation of network switches
New installation of the ASC voice recording system
Relocation of dealer areas with IPC solution
Expansion of the existing Alcatel Lucent Enterprise VoIP system with an additional location and relocation of around 1000 employees
Release upgrade
Project planning
Scheduling and process planning and control
Coordination of installation steps with the involved companies
Coordination of processes with overall project management and the sub-project leads
Schedule and cost control
Acceptance of the installations
Billing and profitability 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 the tender documents (specifications, evaluation matrix)
Review and analysis of processes and the current telecommunications infrastructure
Clarification of requirements
Determination of the strategic planning
Comparison of alternatives
Recording and analysis of the existing telecommunications technologies from Alcatel, AVAYA, Microsoft Skype for Business, and estos
Technical and financial comparison of the systems
Documentation of the results
Creation and presentation of a concept
Preparation of the documents for a Europe-wide tender

Feb 2017 - May 2017

4 months

Germany

Concept development for a patient infotainment and VoIP telecommunications solution

Clinic

Concept development

Jan 2016 - May 2016

5 months

Hamburg, Germany

Concept development for a VoIP telecommunications solution

Hamburg Airport AIRSYS GmbH

Technical and financial evaluation of the possible solutions
Assessment of the installed base and analysis of innovation opportunities
Development of the concept
Preparation of presentations
Clarification of Hamburg Airport's requirements
Determination of AIRSYS strategic planning
Rough review and analysis of the tasks of AIRSYS operations department
Determination of utilization and workload
Rough estimation of operating costs
Comparison of alternatives
Review and analysis of the existing telecommunications technology from Unify (HiPath 4000 and OpenScape Voice for about 2800 endpoints)
Determination of the required investments for a rollout at Hamburg Airport
Technical and financial comparison of the systems with other manufacturers
Documentation of the results as a recommendation for action
Review for future viability, taking into account technical special features such as alarm systems, outdoor telephones, and long ranges

Jun 2015 - Dec 2015

7 months

Concept development for a VoIP telecommunications solution

Arcelor Mittal (steel mill)

Technical and financial evaluation of the possible solutions
Assessment of the installed base and analysis of innovation opportunities
Development of the concept
Preparation of presentations

Jan 2015 - Jul 2016

1 year 7 months

Rostock, Germany

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

Südstadt Rostock Hospital

Concept development
Preparation of the tender documents for an EU-wide tender
Evaluation of the offers
Award recommendation

Jan 2014 - Dec 2014

1 year

Support in channel sales

Unify

Training of new employees in the Deutsche Telekom / T-Systems channel
Development of marketing measures
Development of incentive concepts
Training of Telekom sales staff on Unify products (OpenScape Business, OpenScape 4000, HiPath 3000, HiPath 500) including UC and contact center 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 of the reporting software
Support during the pilot phase
Go-live support
Transfer of the new reporting functions into the standard organization

Jan 2012 - Dec 2013

2 years

Hamburg, Germany

Concept development for a telecommunications solution (one number concept)

EDEKA Gruppe Hamburg

Market research
Technical and financial evaluation of the possible solutions
Concept development and presentation

Jan 2012 - Dec 2012

1 year

Telecommunications and unified communication solution

Automotive supplier

Qualified capture and coordination of requirements and specifications
Analysis of current communication processes
Definition of conceptual basics
Planning of the required system components and quantities
Cost estimate for the new telecom system
Presentation of the concept as a decision template
Creation of a neutral specification document
Technical and commercial evaluation of the offers
Creation of a shortlist
Final negotiations with up to 2 bidders

Jan 2011 - Dec 2012

2 years

Stuttgart, Germany

Implementation of a new customer service organization

VPV Stuttgart

Setup of a connected service center
Process definition
Specification document for technology created

Jan 2010 - Present

16 years 9 months

Pfaffenhofen an der Ilm, Germany

Senior Consultant

Rathjen Consulting

Technical and business consulting in the field of telecommunications systems and networks for mid-sized companies and large enterprises
Consulting, requirements/specification documents, supplier selection, controlling/reporting, project management, scheduling, tracking, communication technology, rollout planning and execution
Unified Communication and Collaboration, CRM, call/contact center, CTI, VoIP, managed services, product definition and business development
Strategic consulting, management consulting, business analysis, process analysis and optimization
Implementation and testing of contact centers as well as tenders for VoIP systems and solutions
Expertise in telecommunications and IT technologies (IP / ISDN, VoIP, UC), market knowledge and the evolution of IT markets
Knowledge of marketing, market launch, and sales processes of large resellers
Presentation and negotiation skills at CxO level as well as business case development
Coaching, mentoring, and team leadership in decentralized organizations

Jan 1984 - Dec 2010

27 years

Senior Consultant / Project Manager

Siemens

Lead of the major project: Federal Employment Agency (1988-1992)
Proposal, sales negotiations, and implementation of around 1,000 telecommunications systems for the Federal Employment Agency via Telekom
Support of Telekom's major account management
Leadership of 5 directly assigned employees
Responsibility for meeting sales targets, revenue goals, and cost budgets
Product launches of the products and solutions Octopus E (Hicom 150/Hicom300) and Octopus F (HiPath3000/4000) at Deutsche Telekom
Product definitions for adapting Hicom150/300 and HiPath3000/4000 to the requirements of Deutsche Telekom
Acquisition and deepening of technical knowledge in the field of telecommunications systems and networks

Sales and Product Management

DeTeWe

Acquisition and deepening of technical knowledge in the field of telecommunications systems and networks

Sales and Product Management

Nixdorf Computer

Acquisition and deepening of technical knowledge in the field of telecommunications systems and networks

Concept and requirements specification creation followed by bid evaluation for a VoIP telecommunications solution incl.

Fashion retail company

Concept development
Preparation of tender documents (requirements specification, price matrix)
Evaluation of bids
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, technical and business consulting in the field of telecommunications systems and networks for mid-sized companies and large enterprises, based on the knowledge gained from previous work and ongoing training as a listed consultant at Alcatel-Lucent Enterprise, AVAYA, CISCO, Microsoft, Mitel, Unify and Telekom Deutschland.

Through activities in sales and product management in different areas of three telecommunications companies (DeTeWe, Nixdorf Computer, Siemens), I gained and deepened my technical knowledge in the field of telecommunications systems and networks.

Skills

Experience And Knowledge

Consulting
Requirements Specification / Functional Specification
Supplier Selection
Controlling / Reporting
Project Management
Project Management
Scheduling
Schedule Tracking
Communications Technology
Rollout Planning And Implementation

Cloud Solutions And Systems

Cloud Solutions
Unify
Alcatel
Avaya
Cisco
Skype For Business
Teams
Nfon
Telecom 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
Business Analysis
Process Analysis And Optimization
Project Management
Implementation And Testing Of Contact Centers
Tenders For Voip Systems And Solutions

Professional Expertise

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

Methodological Expertise

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

Skills

Analytical And Consulting Skills, Structured Approach, Simple Presentation Of Complex Issues
Entrepreneurial Thinking
Creativity And Focus On Results
Assertiveness And Decision-Making Ability
Customer Focus, Building Partner-Like Relationships
Flexibility And Ability To Work In A Team
Employee Leadership And Coaching In Decentralized Organizations

Languages

German

Native

English

Advanced

Education

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

Statistics

Experience

Total positions 25

Experience in Telecommunication 42.5 y

Avg length 2 y 10 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 communications infrastructure, Concept development for a migration to ALL-IP

Main industries Telecommunication, Information Technology, Government and Administration

Main business areas Project Management, Product Development, Sales

Profile

Member since

August 2025

Last update

August 2026

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Frequently asked questions

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

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

Fritz has at least 43 years of experience. During this time, Fritz has worked in at least 20 different roles and for 20 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.

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 communications infrastructure, Concept development for a migration to ALL-IP.

Fritz's most recent position is Concept development and project support for a VoIP-UCC telecommunications solution at Nationwide eye clinic network.

In recent years, Fritz has worked for Nationwide eye clinic network, Automotive credit bank, City of Munich, and Rathjen Consulting.

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.

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.

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

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

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

The availability of Fritz needs to be confirmed.

Daily rate distribution

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Daily rate avg. 775 €

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Median rate 780 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 7 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

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