A portrait of our team

Experts for the energy industry


Jonathan Lichter

Partner, Managing Director
Jonathan Lichter

Jonathan Lichter is a founder and shareholder of Callidus Energie. While studying business administration with a focus on business informatics at the University of Mainz, Mr Lichter found his way into the executive search department at a leading recruitment consultancy. Over the past 7 years, he has held challenging mandates in the areas of sales and in the field of digital transformation. Today, his dense network ranges from executives to strategists to highly specialised service providers in the energy industry. Mr Lichter also deals with future topics privately; as a digital native, he passionately follows all technological trends and developments. At Callidus Energie, he is therefore not only responsible for all IT issues, but also plays a decisive role in the development of the company. Nerd score: Five on the open-ended Lichter-scale.

 

phone: +49 (0) 69 401507 423
e-mail:
Contact Jonathan Lichter
at XING or LinkedIn

Ron-Arne Sydow

Partner, Managing Director
Ron-Arne Sydow

Ron-Arne Sydow is a founder and managing partner of Callidus Energie. With a degree in business administration, he already gained his first entrepreneurial experience in his youth and has been working in personnel consulting for over 15 years. In addition to positions at the top management level, he focuses on mandates in the field of decentralised energy solutions and in energy trading, where he maintains an intensive network. He is particularly interested in aptitude diagnostics. He is a close observer of the change processes in the energy industry and regularly gives lectures on personnel policy topics. His personal passion is for these great technological changes, as well as for playing the piano. He is an enthusiastic snowboarder and is therefore happy, as many others in the energy industry, about cold winter days.

phone: +49 (0) 69 401507 421
e-mail:
Contact Ron-Arne Sydow
at XING or LinkedIn

Ralf Sundermeier

Partner, Head of Aptitude Diagnostics
Ralf Sundermeier

Ralf Sundermeier is a partner at Callidus Energie and is responsible for the development and application of suitability diagnostic selection procedures. A qualified psychologist and state-certified business economist, he has gained over 10 years of management experience, including as HR manager of a large German banking institution. Due to his many years of experience as a consultant and coach, he has extensive expertise in personnel selection, the support of transformation processes and the development of high-performance teams.

phone: +49 (0) 69 401507 420
e-mail:
Contact Ralf Sundermeier
at XING or LinkedIn

Florian Heilmann

Senior Consultant
Florian Heilmann

Florian Heilmann is a consultant at Callidus Energie. As a psychologist (M. Sc.) he supports the team with his aptitude diagnostic expertise. Methodically, Mr Heilmann deals in depth with personality diagnostics in interviews and questionnaires. Mr Heilmann is responsible for energy trading and thus accompanies important players in the energy industry on their path into a digital age.

"The digitalization of the energy industry paired with growing demands on companies' HR policies are a challenging development. Callidus Energie has set itself the task of shaping the energy transition on the human resources side."

phone: +49 (0) 69 401507 431
e-mail:
Contact Florian Heilmann
at XING or LinkedIn

Jasmina Rope

Senior Consultant
Jasmina Rope

Jasmina Rope is a consultant at Callidus Energie. Early on, during her studies focusing on sociology and law, Ms Rope discovered her passion for working with people. In our team, Ms Rope is a competent contact person for employment law and contractual issues. Outside of her academic career, Ms Rope also focuses on topics related to legal and social phenomena. In her private time, the young consultant is enthusiastic about forensics and knows how to use her investigative spirit for interviews and research. On top of that, Ms Rope enjoys playing football and is passionate about being an exploratory cook.

phone: +49 (0) 69 401507 424
e-mail:
Contact Jasmina Rope
at XING or LinkedIn

Maria Bolley

Senior Consultant
Maria Bolley

Maria Bolley is a consultant at Callidus Energie. As an economist (M. Sc.) she deals with economic and behavioural topics and keeps a close eye on the energy industry’s market. Ms Bolley supports the consulting team by quickly identifying, understanding and professionally employing Callidus Energy for clients. Due to her focus on human resources management, Ms Bolley is the first point of contact for issues of operational personnel management. She takes over the internal recruiting and also organises insane team events for employee motivation (about which we’ve taken a vow of silence).

As a competence trainer, she also supports people in their personal development in her personal time as well. In all-day training courses on subjects such as time and self-management, she develops individual solutions together with the participants.

phone: +49 (0) 69 401507 427
e-mail:
Contact Maria Bolley
at XING or LinkedIn

Jelena Hubert

Consultant
Jelena Hubert

Jelena Hubert is a consultant at Callidus Energie. The trained industrial mechanic and dual mechanical engineer noticed already during her professional career as a design engineer and R&D project manager how her heart beats not only for technology but also for the project "human". With her honest but always sincere manner, she refreshes our team with creative ideas in the areas of project management and career coaching. From her point of view, companies that recognize the human success factor,  will achieve the greatest success in the future in terms of retaining employees in the long term and at the same time maximizing economic growth.

In her free time, Ms. Hubert loves to travel in her DIY campervan "Kalli", with which she doesn't shy away from driving thousands of kilometer from Malta in southern Europe all the way up to the North Cape.

phone: T +49 (0) 69 401507 430
e-mail:
Contact Jelena Hubert
at XING or LinkedIn

Esther Scharf

Consultant
Esther Scharf

Esther Myriam Scharf is a consultant at Callidus Energie. Both during her linguistic and pedagogical studies and her many years working as a teacher at high school, she was fascinated by the opportunity to help people to fully realize their potential and to accompany them on their life's journey. Therefore, she decided to make the counseling field her full-time occupation. She supports candidates who also want to realize their professional dreams and furthermore acts as a competent contact person in the search for the best specialists and executives for our clients.

Since Ms. Scharf has left foreign language teaching behind her, but her enthusiasm for foreign cultures and languages always plays an important role, she enjoys traveling to foreign countries. The Côte d'Azur in France, for example, is one of her favorite destinations.

phone: T +49 (0) 69 401507 428
e-mail:
Contact Esther Scharf
at XING or LinkedIn

Miriam Elbs

Consultant/Internal HR
Miriam Elbs

Miriam Elbs is responsible for internal HR at Callidus Energie. As early as during her studies in business education, Ms Elbs discovered her interest in foreign countries and cultures. She is a curious globetrotter who has already visited many countries. This openness and curiosity also characterise her work at Callidus. She is the first point of contact for our internal applications and often brings a completely different and new perspective to our recruitment procedures for our own team.