ISG Linz


Meet the team behind ISG Linz

Mag. Christoph Leitner

Managing Partner


Christoph Leitner studied economics at the Johannes KeplerUniversity Linz in the core areas of Personalwirtschaftt,controlling, corporate development and legal affairs. In addition, he completed in addition to numerous otherembodiments, the certification examinations (master exams) for the business of temporary employment and recruitmentas well as the travel agency industryhe is alsoakkredidierter trainer in adult education after SystemCert.

Was he responsible for the start of his career for the travelmanagement to its customers as a tourism and businesstravel managers (Quote: had to take the chance in a largetravel group walkto look at the world and to managebetween customers, airlines, hotels and travel agencies andconvey what had made huge fun ), he has beenmore than 10 years of HR and management consultant and is a service in advising companies and job and career guide foremployees and applicants.

There is always an uplifting experience with his customers to be successful, to generate solutions and to find the right fit with the appropriate staff. We are here and why we ask our customers!”

Mag Leitner is managing partner of the ISG Personalmanagement GmbH Your partner for quality time andwork, personnel consultancy, human resource development and executive search.

Motto: Dissatisfaction is the beginning of the success


Silke Mörtenhuber, MSc

Managing Partner


Silke Moertenhuber began her professional career with a well-known car manufacturer. After some successful years in this area, Mrs. Moertenhuber decided on re-orientation, began her studies of psychology and sociology and changed into the field or personnel consultation.


  • Search & selection of technical specialist and senior staff
  • Customer-related project completion and co-ordination in executive research
  • Compiling job descriptions and definition of job requirements
  • Recruiting of personnel and presentation to the customer
  • Selection and organisation of all internal and external trainings

Mrs. Moertenhuber particularly excels in her empathy fo people, her commitment and her communication skills. Due to her vast interest in personal as well as professional advancement training, she completed training courses in the fields of coaching, NLP, presentation and communication, HRM, EFT (Emotional Freedom Techniques) as well as in systemic and gestalt-therapeutical consultation.
Additionally, Mrs. Moertenhuber extended her field of knowledge as a trainer and coach in one of the leading adult education institutes, in the domains of personality development, and occupation orientation.

Since March 2004, Mrs. Moertenhuber has been active for ISG Personalmanagment GmbH. Her office is located in Linz and serves customers in all of Upper Austria.


  • Personnel consultancy
  • Personnel search & selection
  • Design and implementation of assessment centers
  • Headhunting
  • Outplacement
  • Coaching

Motto: „If you can dream it, you can do it“ Walt Disney



Dr. Peter Muckenhuber

Managing Partner


Dr. Peter Muckenhuber completed his degree in production and management at the Steyr University of Applied Sciences in 2002, followed by part-time studies in economics at the Johannes Kepler University and doctorate at the University of Natural Resources and Applied Life Sciences in Vienna.

With almost 20 years of professional experience the range of track record of Dr. Muckenhuber lasts from project experience to leadership experience as team and branch manager as well as interim manager. The professional experience covers manufacturing and industry, agriculture, energy supply, technical services / IT / robotics and mechanical engineering.

The individual needs of customers and their organizations are met through the broad experience of Dr. Muckenhuber identified efficiently and precisely and enables a holistic view of it. Thanks to the extensive service portfolio (personnel, IT special service, headhunting, training, outplacement, interim management), the right solution for customers, employees and potential new employees can be developed and implemented.


Credo: „The Only Thing That Is Constant Is Change“ (Heraklit)



  • Technology
  • Industry
  • Business Consultancy / Interim management
  • Public & Government (Energy)
  • Agriculture

Mag. Erwin Ortner, MBA

Managing Partner


Completed his undergraduate degree in business administration at the Johannes Kepler University of Linz with a focus on marketing and accounting, and his postgraduate education at the LIMAK Linz with an MBA in General Management. He has a total of 26 years of professional experience in technical and management positions in Austrian and international companies in the sectors of financial auditing services, food industry, logistics, and the petroleum industry. Since 2004 he has been a freelance company and personnel consultant, and since 2008 an independent partner and consultant for ISG Personnel Management GmbH.

Erwin Ortner can inform you about the following focuses of his personnel consulting work:


  • Machine and factory construction
  • Electro-technology / electronics, automation, robotics
  • Pharmaceuticals / chemicals / plastics
  • Food industry
  • Building materials industry and trade
  • Logistics
  • Banking and insurance
  • Legal and tax consulting, auditing
  • Research / education / science


  • TECHNOLOGY (mechanical, electro-technology, automation, mechatronics, process engineering, environmental engineering, quality management, chemistry, renewable energy, production-oriented managers with other educational and training focuses)
  • DISTRIBUTION (mainly in the business-to-business technical environment)
  • HR roles with different key tasks and responsibilities

Barbara Sebera (formerly Rammer)

Managing Partner


Barbara Sebera – active in personnel consulting for over 30 years.

After completing a Commercial Academy, Barbara began her career working in sales and controlling for a food industry company in Vienna for five years. She then moved in the field of personnel consulting and recruitment in 1990. Since then, Barbara has been working in the personnel consulting and recruitment business for well-known companies in Upper Austria. Over the last 16 years she was a division manager for commercial and technical positions.

With ISG since January 1st, 2021 as Managing Partner.

Barbara Sebera has extensive professional experience in the classic field of search & selection of Specialists and Executives in various industries. This includes Executive recruitment and guarantees professional handling and support throughout the consulting and recruitment process.

Barbara has completed numerous training courses in the areas of leadership, communication, sales and training as a systemic solution-oriented coach throughout her professional career.

In addition to systemic search and selection as well as analytical selection, Barbara Sebera is a successful personal consultant and recruitment professional today as she provides above all empathy, communications skills, hands-on mentality, absolute reliability and confidentiality which customers and candidates hold in high regard and value.


  • Professional Search & Selection
  • Executive Search
  • Coaching
  • Outplacement


  • Industry & Consumer Goods
  • Retail & Wholesale
  • Financial Services
  • Transportation & Logistics
  • Consulting Services

Peter Aschenwald

Managing Partner

A-4053 Haid – OÖ
Nettingsdorferstraße 68

A-6370 Kitzbühel – Tirol
Kirchbergerstraße 62a


Peter Aschenwald – with more than 20 years of management experience and a focus on human resources, provides comprehensive consulting and high utility to his customers.

He was Managing Director and CEO for many years at the market leader in retail sporting goods and since 2003 offers his expertise as a consultant.

A strong sense of empathy and understanding, broad practical experience, and fast uncomplicated implementation make him a competent partner for all human resource consulting issues.

Motto: „A cool head, a warm heart and working hands!“


Traude Rathgeb

Managing Partner


Mit Empathie und Erfahrung verbindet Traude Rathgeb Menschen, die zusammenpassen.

Frau Rathgeb ist Managing Partner der ISG Österreich und seit 2019 als Unternehmensberaterin selbstständig.
Mit ihrer Beratungsfirma „The Sound Of Export“ unterstützt sie Betriebe im Außenhandel, Internationalisierung und Organisationsentwicklung ( Neben obigen Themen ist die Personalsuche in vielen Organisationen eine stetige Herausforderung. Mit der ISG unterstützt Traude Rathgeb professionell Ihre Kunden auch in der Personalsuche.

Sie war über 20 Jahre erfolgreich als Exportexpertin in leitenden Positionen in Vertrieb, Marketing und HR, vorwiegend in Produktionsbetrieben tätig. Als Chief HR Officer in einem Familienkonzern entwickelte sie HR-Projekte. Der Fokus lag auf Führungskräfte-Planung, Sicherstellung des Wissens-Transfers bei Pensionierungen, On- und Offboarding und Employer Branding zwecks Facharbeitergewinnung 

Traude Rathgebs Begeisterung für das Arbeiten mit Menschen und ihre jahrelange Führungsverantwortung hat ihre Überzeugung gestärkt, dass die richtige Personalauswahl und Diversität auf allen Unternehmensebenen erfolgsentscheidend sind.


  • Suche und Auswahl von Fach- und Führungskräften
  • Executive Search
  • Personalberatung


  • Industrie & Gewerbe
  • Finanzdienstleistung
  • Transport & Logistik
  • Beratungsdienstleistung

Frau Rathgeb hat ausgezeichnete Beziehungen zu Frauen in C-Level Positionen in ganz Europa. Sie ist Mitglied des Europäischen Frauen-Leadership-Netzwerks EWMD. Mehrere Jahre war sie Präsidentin des Chapters Linz, Austria-Präsidentin sowie Mitglied im International EMWD Board.

Ihren Ausbildungsweg in der Kombination aus Bürokauffrau-Lehre in Linz, Universitätslehrgang an der Wirtschaftsuniversität Wien und umfangreicher Praxis auf internationaler Ebene sieht Traude Rathgeb als großen Vorteil. Im Jahr 2016 wurde Frau Rathgeb in Oberösterreich zur Managerin des Jahres gewählt.



We strive for our continuous development and the ongoing improvement of our services to exceed your expectations!