Engineering philosophy History Facts and figures Management team Jobs


Planning and implementation – from a single provider

Founded in Hanover in 1988, IC-L has been planning and implementing major industrial and commercial construction projects (including special construction tasks) for nearly 30 years. Our strength: we offer a full range of services, from initial sketches through to supervising and managing construction, right up until handing over the keys. Our clients trust us to provide individual, internationally focused and cost-effective solutions. As an independent, owner-managed company, we offer a long-term partnership based on trust and values.

Demanding projects – and a clear promise

Whether it’s for general planning projects or individual specialised services, we always strive to provide the best result. That’s why we guarantee that each of our customers will have direct access to a central contact partner who they can rely on for prompt, expert advice and coordination, and who can also respond quickly to special requests. No matter where in the world we are operating, we implement projects to German quality standards.



Excellence is a big word – but that doesn’t stop us from striving for it in each of our projects. That’s why we always focus on having consultants with the greatest relevant expertise; for the ability to develop new solutions in an individual and creative manner; for experience of efficiently implementing proven solutions; and for the willingness to develop new and individual solutions. We never settle for being content. This is precisely the reason why our clients value our work.


For us, it means that each of us takes responsibility for our actions and also for works to overcome our shortcomings. Quality means that all IC-L employees can depend on every other employee.. And it means that we discuss problems openly and solve them together. In short: it means that every single individual at IC-L gives their all. After all, we are all working towards a common goal: the satisfaction of our clients and partners.


We love our work. We find difficult projects exciting – and challenging problems stimulating. We tackle them with dedication, enthusiasm and initiative. The best thing is that our clients can sense this level of commitment. They know that we put our hearts and souls into our work, and they appreciate the fact that we are as passionate about their project as they are.

Team spirit

Everyone has their own preferences and strengths. And with us, everyone can focus on developing their strengths – allowing everyone to contribute them to the team. Individual skills are combined into comprehensive expertise. Everyone supports each other with their own knowledge and experience. And everyone learns with and from each other – across specialisations, projects and countries. And that’s precisely why we are successful together.


May 1988
Founding of Mertzios Planungsgesellschaft.
April 2004
The company is renamed Ingenieur Consulting Langenhagen GmbH & Co. KG.
April 2010
After our successful work for Volkswagen in India, we open our office in Pune.
September 2013
Opening of the Munich office.
April 2017
IC-L is managed by Dr. Philippe Hoersting and Nicolas Mertzios.



Ioannis Mertzios
Dipl.-Ing. Civil Engineering

Philippe Hörsting
Doctor of Civil Engineering
Managing director

Nicolas Mertzios
Managing director

Tina Jackisch
Dipl.-Ing. Architecture
Head of department "Building planning phase 1-5", Hanover-Langenhagen

Werner Nowak
Dipl.-Ing. Architecture
Head of department "Building planning phase 6-9 and structural planning", Hanover-Langenhagen

Thorsten zur Kammer
Doctor of Civil Engineering
Head of department "Building planning phase 6-9 and structural planning", Hanover-Langenhagen

Thorsten Strauss
Dipl.-Ing. Architecture
Branch manager, Munich

Sarah Franz
M. Sc. Business Administration
Commercial manager, Munich

Sarosh D. Mistry
Managing Director Operations, Pune, Indien

Anil Suryawanshi
Managing Director, Pune, Indien


IC-L brings together people from ten different countries. As well as new colleagues from across the world, you can look forward to exciting projects, a high degree of personal responsibility, plenty of freedom for ideas and – there’s no denying it – lots of work. If you would like to help contribute to our success, are interested in a specific job advert or would like to make a speculative application, we would love to hear from you. Please include all relevant information in your application documents.