Our Values

  • Equilibrium

    Team work

    Sustainable use of resources

    Balanced solutions

  • Respect

    Thoughtfulness

    Fairness

    Esteem

  • Quality

    Expertise

    Trustworthiness

    Client satisfaction

The Partner-Like Team

Kristian Schellenberg

PhD, MSc ETH/SIA
CEO / Project Manager

After his studies at ETH Zurich with stays in Spain and the United States, Kristian stayed at ETH as research and teaching assistant and carried out his PhD on the design of rockfall protection galleries with a research exchange in Japan. Thereafter, he worked in Denmark on international major bridges and as consultant in Switzerland with focus on the assessment of existing bridges and the design of new bridges.

Mirco Protner

MSc ETH, MBA, CFA
CFO

Mirco graduated in Civil Engineering at ETH Zurich in 2003 and spent an exchange year in Madrid at UPM. After several years working as project engineer and project manager on the contractor side, Mirco completed an MBA and worked for 10 years in the financial industry.

Marcel Imbach

MSc ETH Civil Engineering, SIA
Member of the Executive Board / Project Manager

Marcel completed his master’s degree in civil engineering with a specialization in construction and geotechnics at ETH Zurich in 2014. After graduation, he worked on numerous national and international infrastructure and tunneling projects across all project phases and joined the technical office of a global construction group in 2019, where he mainly managed structural projects often with special solutions.

Maria Kierzek

MSc Eng
Project Manager

Maria holds a Master’s degree with a specialization in structural engineering from the Poznan University of Technology and has studied one year at the Vienna University of Technology and one semester at the Politecnico di Milano as part of exchange programs. Subsequently, she worked on civil and bridge engineering projects in England and Germany, specializing mainly in railway bridges.

Dawid Wisniewski

PhD, MSc, CEng, MIStructE, MICE, MBA
Member of the Executive Board / Chief Engineer

Dawid studied Bridge Engineering at University of Technology in Wroclaw. His PhD, in the field of reliability assessment of existing structures, he did in Portugal with a short stay in Barcelona. Later, he worked with assessment of existing bridges and with the design of new medium and large span bridges in Denmark, Canada, United Kingdom and Poland. Dawid has extensive experience in the design of reinforced and prestressed concrete bridges, including cable-stayed bridges.

Vasco Amaral

MSc Eng. Civil and Structural Engineering
Chief Engineer / Specialist in Construction Engineering

Vasco has vast experience in bridge engineering having been involved in the design of different types of bridges and construction methods, in different project stages from conceptual design to technical assistance during construction and assuming different roles. His working experience ranges from small standard structures to complex world class projects such as cable-stayed or suspension bridges.

Stephan Fricker

Prof. Dr. sc. ETH, Dipl.-Ing.
Proof Check Engineer

After his studies in Stuttgart and Calgary, Stephan worked as structural engineer in Berlin and Haldenstein close to Chur and did then his PhD at ETH Zurich in the field of bridge monitoring. After that, he has been working on proof check projects at a recognized engineering office in Germany and is now professor for concrete and structural design at Bern University of Applied Sciences (BFH).

Fernando Ortiz

MSc UPM
Specialist in SOFiSTiK

Fernando Ortiz completed his master’s degree in Civil Engineering at the Polytechnic University of Madrid. From 2002 to 2016, he worked in structural engineering in Germany, China, and Switzerland. Since 2017, he has been teaching at ETH Zurich as well as at Bern University of Applied Sciences, where he was appointed full professor in 2019 for Computer-aided structural analysis, digitalization, and BIM.

Michal Majka

PhD, MSc, CEng, MICE, MIEI
Senior Bridge Engineer

Michal holds an MSc in Civil / Bridge Engineering from University of Technology in Wroclaw, Poland and a PhD degree from National University of Ireland Galway. He started his industry career in the Structural Design Section of Irish Rail, with a strong focus on design, rehabilitation, inspections and maintenance of very diverse aging and historic railway bridges. After gaining this versatile engineering experience running projects from the very start to the very end, he followed it up with work in Canada on large North American bridges.

Alejandro Giraldo Soto

PhD, MSc Eng
Senior Bridge Engineer

Alejandro is a structural engineer who earned his PhD from the Polytechnic University of Madrid in 2017, focusing on the structural behaviour of steel-concrete composite box girders in Ultimate Limit State. He has extensive experience from both design practice and academia, with expertise in the conceptual design of new bridges, assessing existing bridges, teaching bridge engineering and conducting research in large-scale structural testing.

Laurent Rus

Dipl. EPFL, PE, OIQ, ICCP
Senior Bridge Engineer

Early in his career and after graduating from the Swiss Federal Institute of Technology (EPFL) in Lausanne, Switzerland, Laurent has been participating in different structural projects, starting with numerical analysis at the International Centre for Numerical Methods in Engineering (CIMNE) in Barcelona, Spain, applying and developing structural software. Following a Master of Science Degree at the University of California in Berkeley, USA, he has participated in the designing and construction engineering of numerous long-span bridges.

Matías Valenzuela

Prof., PhD, MSc Civil Engineering UCH
Senior Bridge Engineer

After graduating from the University of Chile with a degree in Civil Engineering, Matías completed his master and PhD at the Universitat Politècnica de Catalunya (UPC) in Barcelona, Spain. Matías began his career at the Ministry of Public Works in Chile, working as a Structural Engineer, later as Structural Advisor, contributing to various strategic projects in Chile, including the Chacao Suspension Bridge. Matías has also been professor at the Pontificia Universidad Católica de Valparaíso for Bridge Design, Reinforced Concrete, Bridge Life Cycle, and Public Infrastructure Management.

Krystian Mikoda

MSc Eng
Bridge Engineer

Krystian earned his Master’s degree in Bridge Engineering from Wroclaw University of Science and Technology in Poland. From the beginning of his professional career, he has worked on creating structural models and conducting detailed structural analyses, which have been key aspects of his development. He gained vast experience in designing pedestrian bridges in Denmark and road bridges in Poland. He was also involved in developing an innovative solution for constructing prefabricated railway bridges.

Luciana Marziotte

MSc Eng
Bridge Engineer

Luciana graduated in Civil Engineering from the Universidad de la República in Montevideo, Uruguay, in 2003. In 2012, she attended, among others, the lectures on bridge construction and preservation of structures of the master’s program at ETH Zurich, after having first worked in construction site supervision with precast concrete elements and in research on self-compacting concrete and geomonitoring of structures. From 2012, she worked on bridges for Swiss national road projects (mainly in structural maintenance) as well as for the inspection of bridges.

Kristian D’Amico

MSc Eng
Bridge Engineer

Kristian holds a Master’s degree in Structural and Transportation Engineering from the Czech Technical University, with a focus on the statics and dynamics of bridges. He is currently pursuing a PhD in parametric optimization of bridge design. As a bridge engineer, he has worked on a wide range of bridge projects in Prague of various scales and complexities, including footbridges, road bridges, and railway bridges, utilizing steel, concrete, UHPFRC, and composite materials.

Jean-Philip Zindel

MSc Eng ETH
Bridge Engineer

During his Master’s studies at ETH, Jean-Philip acquired in-depth knowledge of soil mechanics and dynamics, emphasizing on soft ground behavior and its interaction with structures. Despite his interest in geotechnics and tunneling, the bridge design lecture by Prof. Dr. Walter Kaufmann generated a big fascination for bridges and the challenges involved in their construction. This led Jean-Philip to start his career in bridge design, where geotechnical and structural engineering come together in complex infrastructure projects.

Alexander Kagermanov

PhD, MSc Eng
Specialist in Non-linear FE Analysis

Alexander completed his Master’s degree in civil engineering with a specialization in structural engineering at the Technical University of Valencia in 2012. Between 2013 and 2016, he completed his PhD in earthquake engineering with a specialization in numerical modelling at the Institute for Advanced Studies (IUSS) in Pavia, Italy. After graduating, he worked on numerous applied research projects at the Eastern Switzerland University of Applied Sciences (OST) and has developed the non-linear analysis software XDEEA.

Matias Penrroz

MSc Wood Technology
Timber Engineer / Specialist for Digital Construction

After completing his studies in Architecture at PUCV in Chile, including an exchange program at TU Berlin, Matías specialized in timber construction and digital workflows. He pursued a Master’s degree in Wood Technology at Bern University of Applied Sciences (BFH), concentrating on complex timber structures, computational design, and interdisciplinary collaboration in construction. His career spans more than a decade of experience in research, teaching, and industry, optimizing digital workflows between architects and engineers.

Ernest Kakoma

MSc Eng
Allplan Modeller

Ernest holds an MSc in Structural Engineering from The University of Zambia. He has worked on different construction projects, notably at the site supervision of the Kazungula Bridge Project, the extra-dosed border bridge connecting Zambia and Botswana. He is currently involved in research in the field of structural fire engineering at Stellenbosch University in South Africa and mainly interested into computational modelling, parametric design, and the application of BIM for new and existing structures.

Andreia Frasco

Draftswoman EFZ
Draftswoman

Andreia completed her apprenticeship as a Draftswoman EFZ at the Engineering Structures department of the cantonal road administration of Grisons and created mostly formwork and reinforcement drawings in Allplan for internally designed projects. Construction in alpine terrain requires a careful examination of the terrain geometry, which she incorporates into the 3D modeling of our projects.

Armel Tchoffo

Allplan Modeller

Armel holds a university degree in Political Science and a teaching certification. In 2016, he relocated from Cameroon to Spain, where he completed his education in humanitarian studies and perfected his language skills (native French, Spanish, and English). He also has knowledge in administration and finances. Since 2018, he has worked as a language teacher. Armel is learning Allplan and attending part-time education in technical drafting for infrastructure projects.

Joambeth Bolívar

Allplan Modeller

Joambeth studied up to the 7th semester of Industrial Process Engineering. Prior to her graduation, she started learning Japanese and became a teacher after completing the three levels of teaching, reaching the N3 level. Since 2023, Joambeth has been learning Allplan and is attending the part-time education for technical drafting, with the aim of creating parametric bridge models and executing the BIM method for the later operational phase.

Yoshiki Oikawa

BSc Eng
Allplan Modeller

Yoshiki holds a BSc in Structural Engineering from Kanazawa University in Japan. He specifically studied rock shed design and has attended several academic conferences. He is currently joining the team as part of the exchange program of young professionals Switzerland-Japan and is interested in reliability design, application of BIM for new and existing structures, and bridge maintenance systems.

Partner Companies

Together we are stronger. For this reason we collaborate with the following partner companies:

  • Singular Structures Engineering Ltd.

    Singular Structures Engineering Ltd. specializes in civil structural engineering, with a primary focus on bridge design and complemented by expertise in forensic structural engineering. Its extensive experience with complex structures enables seamless integration and adaptability within large multidisciplinary teams. In our collaboration, this partnership strengthens our capacity to deliver robust solutions in bridge design and structural assessments, aligning with our shared values and project goals.

  • Aschwanden & Partner Ltd.

    Aschwanden & Partner Ltd. in Rüti ZH provides bridge engineering services in the 3rd generation. We collaborate in rehabilitation projects and in the design of new bridges. Aschwanden & Partner supports us with their strengths and their experienced draftsmen and designing engineers among other things in preparing tender documents and in-site supervision, also in innovative projects or in the application of BIM.

  • Dr. J. Grob & Partner Ltd.

    Dr. J. Grob & Partner Ltd. in Winterthur disposes of expertise in the assessment and rehabilitation of bridges, in earthquake assessment, dynamic design and fatigue resistance. In our collaboration, we create substitutions for our project managers. Furthermore, Dr. J. Grob & Partner can provide extended capacities of project engineers and draftsmen if needed.

  • ASECon

    ASECon (Advanced Structural Engineering Consultants) in Wroclaw (PL) is specialized in design of complex structures. We collaborate for design services and competitions.

  • Schneider Ingenieure Ltd.

    Schneider Ingenieure Ltd. in Chur is specialized on survey of land as well as on road and public works civil engineering. Thanks to their expertise, we can cope for the alignment design of bridges and we can offer customized geodetical bridge monitoring.

  • Matrisk Ltd.

    Matrisk Ltd. in Affoltern am Albis analyses risks and reliability of technical systems. Matrisk is specialized in probabilistic modelling of loads and resistances as well as in calibration of partial safety factors. For specific bridge related tasks, our collaboration can be extremely valuable for our client’s solutions. For instance, when an existing bridge does not fulfill code requirements, we can assess if this situation is acceptable or if cost-efficient measures can improve the safety level.

  • Infrastructure Management Consultants Ltd.

    Infrastructure Management Consultants Ltd. (IMC) provides support to assess, develop and improve models and processes of operation and maintenance of infrastructure. Together with IMC we can elaborate customized solutions for condition and risk-based maintenance plans of bridges and other engineering structures.

  • Ingreen Innovation

    Ingreen Innovation is convinced that “another construction is not only possible but necessary”. As a catalyst for change, from engineering, Ingreen Innovation is committed to the integration of innovative technological and environmental variables in decision-making affecting the construction sector. Therefore, Ingreen Innovation is specialized in the integration of the BIM methodology in the infrastructure sector and in the evaluation of the carbon footprint as a decision-making tool. Together with Ingreen Innovation, we aim at reducing the life cycle CO2 emissions by integrating quantification evaluations in the different construction alternatives and recommendations.

We collaborate with: