Andreas Derrer

Founding Partner | Dipl. Arch. FH/SIA
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Andreas Derrer is a co-founder of OOS and a member of the Management Board. In this position he is responsible for developing internal work processes and tool (LEAN/BIM) as well as the employee recruiting at OOS. As a partner, he also managed the planning of the two service centers for Novartis and the office building of Priora at the first district (Zurich Airport).
From the very beginning Andreas developed and implemented projects of various scales, such as the Schudel House, the Uster Christmas lighting and the brand idea and interior fittings of the Knonaueraumt rest stop (MYSTOP). After studying architecture at the Winterthur Technical School his first job was with Giuliani & Hönger Architects in Zurich. He worked on the design of a virtual campus during his stint as an assistant in the Architecture Department of the ETH Zurich.

Jan Gloeckner

Partner | Dipl. Arch. ETH
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Jan is a project manager for temporary architecture at OOS since April 2011. He handles tasks and projects in interior design as well as the conception of fair stands and exhibitions. His special interest lies in the combination and integration of graphic design, communication, branding, media techniques with architecture and design.
From 2006 until 2011 Jan worked as a project manager at the "Office for spatial identity." in Zurich and was responsible for the concepts, planning and implementation of fair stands, showrooms, POS design and exhibits. He started his career as Designer in the 3D design department of "Interbrand Zintzmeyer & Lux", a well-known Corporate Identity agency based in Zurich. Before that he did freelancing (also for OOS) in architecture, visualization and multimedia. Jan spent his childhood in the upper part of the canton of Zurich and holds a master degree in architecture from ETH Zurich.

Christoph Kellenberger

Founding Partner | Dipl. Arch. FH/SIA, EMBA HSG
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Christoph Kellenberger is a co-founder of OOS and a member of the Management Board. Always on the search for new ideas, he deals with issues concerning the strategic business development of OOS. In recent years, he has been in charge of the design of the Swiss Pavilion at Expo 2020 Dubai UAE, the Casa Brasil III in Bahia, and the representative company headquarters of Sonova Phonak in Murten, among others. The latter is one of the first zero-energy corporate buildings in Switzerland and embodies clever architecture; solving aesthetics and functionality with architectural knowledge rather than technical apparatus.

Christoph received his diploma from the Winterthur Technical School in 1998. He gained further experience as an assistant at the faculty of Prof. Dr. M. Angélil at ETH Zurich. In addition to his practical experience, he enhanced his management skills with an education at the HSG Executive School, which he graduated with an Executive MBA in 2014. He is also initiator of the EXIL live music club underneath the OOS office premises.

Gonçalo A. Manteigas

Partner | Dipl. Arch. ETH/SIA
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Gonçalo A. Manteigas earned his diploma from the ETH Zurich. During his studies he worked for six months at the ARX-Portugal architectural firm in Lisbon. Gonçalo has been a part of the OOS core team since February 2007 and has worked on numerous competitions and projects such as the Uster Christmas lighting and Office Liip, the story addition and the renovation for Nest Sammelstiftungen, the office Pöyry Business Group and on the project Leuchtturm Aathal. Most recently he managed as Master Builder the planning and construction of the offices Wüest & Partner behind Paradeplatz in Zurich. Gonçalo also oversees the internal IT department and such as the CAD dossier and the Project Management Dossier.