We offer tailor-made expertise to our clients. Through direct personal contact with Jan Stelcl, the founder of JSI, we provide a personalised experience. Jan Stelcl, brings a unique perspective to our projects, understanding the importance of creating spaces that fulfill the vision of our clients.

JSI has developed a careful understanding of the civil engineering requirements of modern buildings, as well as renovations, enhancements, and expansions of existing constructions. Our extensive experience includes working on a wide range of projects, such as private homes, hotels, factories, school buildings, bridges, shopping centres, garden pavilions, film festival constructions and botanical glass houses. We bring this diverse project experience to every new endeavour.

Customer satisfaction is paramount at JSI. We are committed to delivering the best quality work within a reasonable timeframe. Our goal is to complete projects efficiently, ensuring that our clients can enjoy their constructions with utmost satisfaction.

JSI places a strong emphasis on safety and security. Our team is equipped with earthquake training and expertise in calculating earthquake risks using the Response Spectrum Method. We understand the importance of ensuring that our clients feel safe and secure in their constructions, allowing them to enjoy their spaces for many years to come.

With 12 years of practical competence in Switzerland and experience in Czechia, Germany, England, and Zambia, JSI brings a wealth of knowledge to every project.
With Jan Stelcl's further degree in intercultural studies, JSI embraces collaboration with partners around the globe.
Our team's expertise and diverse experiences enable us to provide innovative solutions that meet the highest standards of quality.

At JSI, we believe in an ecologically healthy approach. We strive to use wood, steel, concrete, or a hybrid of these materials to create high-quality modern constructions or renovations. Our focus is on utilising materials that are not only durable and aesthetically pleasing but also align with our commitment to sustainability.