About us

Use the experts´ expertise to add immediate value, don´t reinvent the wheel.

We as founders have over 50 years of combined experience from working with a range of consulting and delivery firms, focusing on the business services (GBS) topic and related aspects. We offer our unparalleled combination of knowledge and expertise with the aspiration to provide immediate and unique value to our clients. Our services are modular and targeted. We start by listening to your needs and provide the best flexible combination of resources and tools from within our firm or including our global network of associated experts.



We have come together and set up ConAxia with the strong belief that successful solutioning, change and true transformation only happens when great minds utilize their knowledge and experience to serve the clients’ needs as primarily goal.

Christian Mertin

As a seasoned Global Executive- and Business-Advisor I am highly motivated to solve your challenge, bringing my Global and deep expertise, experience and innovation capabilities. My objective is to generate an immediate high impact and “long term value” for you as client.

I am a dynamic, client focused strategic thinker and have over 25 years of experience in Business, Finance and IT Management Advisory, including nearly 20 years within Ernst & Young in Germany, Europe and India. With my exceptional interpersonal, communication and collaboration abilities I am prepared to deliver first rate results and create a transformation momentum, especially in the CFO and Corporate Services (Captive or BPO) area. In my daily work, I focus on the challenges and solutions to truly implement a transformation and helping organizations leapfrog from merely cutting costs and bundling process-based activities together, to unlocking their back office potential to drive digitization and building their GBS as a “transformation engine.” Working with globally renowned companies, I help clients recognize that their Global Business Services or Shared Services set-up can be transformed into a real innovation hub.

In my private life I am a family man (married, 2 children) with a great passion for motorcycling & old cars, diving & sports and (good) wine & food. Whenever my wife and I can travel, we are drawn out into the world and enjoy meeting interesting new people and catching up with our friends.

Career History

  • 2020 – 2021 EY, Global Senior Lead Partner – Global & EMEIA Finance and GBS Consulting Leader
  • 2017 – 2020 EY, Global Senior Lead Partner – “Global Business Services“ Solution
  • 2013 – 2017 EY, EMEIA Senior Lead Partner – Finance Consulting | Global Client Services Partner
  • 2010 – 2013 EY India, Consulting Leader India “Finance & Shared Services”
  • 2001 – 2013 EY Partner/Senior Manager “Corporate Sourcing/Shared Services“ Central European Area
  • 1995 – 2001 IBM Consulting Group, Principal & Practice Leader “IT Value & Cost Control”
  • 1994 – 195 IBM Development, Design Engineer


  • IMD, Lausanne: Leadership Programs, 2007, 2008 & 2014
  • St. Galler Business School: St. Gallen Executive Leadership Program
  • University of Enschede, Enschede (Netherlands): Master Thesis, Physical Department
  • University of Applied Sciences Würzburg-Schweinfurt: Diploma in Engineering (FH), Information Technology


Key Skills

  • High Impact focused strategic thinking
  • Innovation creation & implementation
  • Deep & practical CFO & Business
    Operations Transformation expertise
  • Global Business Services, Shared Services expertise
  • Strong teambuilder & collaborator
  • CFO relations & Global key account management
  • Target Operating Model & Organizational development

References (upon request)

  • Global leading Taste & Wellbeing and Fragrance & Beauty company:
    CEO, Executive Board Member & Global GBS Leader
  • One of the largest snack companies:
    Former CIO, Former Global GBS leader
  • Leading provider of products and services for individuals with renal diseases: Global GBS Head, SVP Corporate Controlling
  • Values-based, R&D-driven global biopharmaceutical company:
    SVP & Global Head of GBS
  • Global leading sportswear company:
    Former CFO & Supervisory Board Member
  • Global leading pulp & paper company: Former Corporate Controler and CEO of a leading European energy company, CFO of leading European lifestyle Group
  • Global Leading Consulting firm: EMEIA Managing Partner
  • Global leading Pharmaceuticals & Crop Science company: Former Head of Integrated Business Operations – Executive Vice President

Tom Bangemann

I am an experienced consultant, subject matter expert (SME), manager, mentor and board member with proven content and managerial track record.

For most of my career I have operated as a senior manager and advisor utilizing my profound experience in organizational setup, business development, business transformation, both in sales as well as in design and implementation work. I have filled roles in international consulting practice leadership as well as coaching, mentoring and regular board membership as well as advisory board roles. I offer a proven record in shaping a business and motivating a team through vision, determination and teamwork. I am excited to participate and support clients in transformation or change related projects.

Privately I grew up in the Nordics, mostly Finland, 1 year in Norway with many summers in Sweden, and hence speak Finnish and (some) Swedish. Fun fact: As a kid I was Finnish Champion in video games (Atari Centipede). After school I spent 2 years in the German Army (Officer career path), thereafter studied in Germany (Hannover) and USA (CSU Hayward/UC Berkeley). Our family of 4 resides in Germany.

Career History

  • The Hackett Group July 2002 – June 2021 SVP and European Practice Leader Advisory & Transformation (Consulting)
  • Arthur Andersen Business Consulting March 1997 – July 2002
  • Arthur Andersen Audit November 1993 – February 1997

Consultant / Advisor profile summary


  • 19 years in The Hackett Group , 10 years in Arthur Andersen
  • Globally known as “expert on GBS and benchmarking”
  • SME on SG&A Transformation with focus on GBS (HR, Procurement and Finance, both SG&A strategically as well as several functions and processes in much detail)
  • Hundreds of small and large consulting engagements.
  • First leader in Hackett´s European Advisory business (membership based programs on all support functions and select topics e.g. EPM, GBS, and processes e.g. C2C, P2P)
  • 2 years Board of Directors in Basware (listed software company) (2006-2008)
  • 1 year Mentor for Chief HR Officer of Fiskars (listed company) (2015-2016)
  • HR Superstar in HRO Magazine (5 times between 2005-2019)

Consultant / Advisor profile summary

GBS specific:

  • Globally known “guru” on GBS. Participant in several networks, communities and associations in the GBS space.
  • Thought Leader of the Year, SSON, 2010.
  • Voted (by practitioners), onto several SSON panels e.g. G6 Europe, G6 Australia, D6 Germany and C6 China
  • Author of “Shared Services in Finance & Accounting” published in February 2005, and hundreds of articles, interviews and studies (in 3 languages) on World-Class Finance, HR and Procurement
  • Founder of several GBS communities. Initially Hungary (oldest GBS community) then Baltics (Estonia, Latvia, Lithuania) and supporting others (UK, Czechia, Poland)
  • Advised several governments in optimizing their location / GBS offering
  • Co-designer of The Hackett Institute , the professional development business within The Hackett Group.
  • Author of the Advanced Diploma in GBS within the Certificate in GBS Program (The Hackett Institute).
  • Chairman of Conferences in China (10+ years), Dubai (2 years), several countries and events in Europe (20+ years)
  • Hundreds of presentations, workshops, panelist and moderator roles at events in Europe, USA, India, Australia, China, South Africa (examples on youtube, e.g. https://www.youtube.com/watch?v=AqJP1_1Ya1E (ABSL Poland annual conference, rated 2nd from over 100 presentations)