Project Assistant GU/TU 80-100% (m/f/d)

As a leading Swiss construction and real estate service provider, Implenia develops, realises and manages living spaces, work environments and infrastructure for future generations in Switzerland and Germany. Additionally, Implenia offers tunnel construction and related infrastructure projects in other markets. The company combines the expertise from highly qualified consulting, development, planning and execution units under one roof to form an integrated, multinational leading construction and real estate service provider. With its headquarters in Opfikon near Zurich, Implenia employs over 8,000 staff (FTE) across Europe and achieved a turnover of CHF 3.5 billion in 2025. More information at implenia.com

For our office in Gisikon in the GU/TU sector, we are looking for a flexible and numerically inclined project assistant (m/f/d). In this role, you will support our project and construction management in the execution of GU/TU projects in all administrative and organisational tasks. Your workplace can be the Opfikon, Gisikon location or our project in Andermatt .

Your responsibilities

• As a project assistant, you coordinate appointments for project and construction management, handle their correspondence, support project reporting and prepare presentations, minutes and project-specific reports
• You ensure the filing and documentation of project documents and assist in the preparation of construction documentation
• You support project and construction management in the preparation and dispatch of tenders
• In the construction administration software (RIB iTWO 4.0), you also draft and update contracts and amendments, participate in the invoice verification process and prepare invoices for clients
• You are responsible for the registration and management of guarantees (advance payment, performance and warranty guarantees)
• Additionally, you act as the interface to insurance companies for claims, handle damage notifications to insurers after incidents and support project management in damage settlements

Why you will succeed

• You have completed a commercial apprenticeship
• You have an affinity for the construction industry
• You preferably bring project experience
• You are very proficient with MS Office (especially PowerPoint / Excel)
• You have very good German language skills
• You are service- and customer-oriented and possess assertiveness
• Furthermore, you are innovative, open, farsighted, numerically inclined and self-confident, have a sense of humour and want to change and improve things

What we offer you

• A multicultural working environment with the chance to help shape a liveable future
• State-of-the-art technologies and a contemporary workplace at a sustainable company
• A company that promotes talents and the further training of its employees
• The security of a financially sound, broadly positioned group with strong roots in Switzerland
• An exciting selection of benefits:
• 5 weeks’ holiday and 9 paid bridge days
• an in-house pension fund with a very good coverage ratio and 3 contribution levels
• numerous discounts on well-known providers of products and services

Why our employees enjoy working with us, they tell you themselves in the following video: https://youtu.be/wtuhlIfjJq8

Could this position interest you? If so, apply today via this advertisement! We look forward to getting to know you.

At Implenia, we value and live diversity. Our recruitment process is therefore geared towards promoting diversity, equality and inclusion.

*We kindly ask recruitment agencies not to submit unsolicited CVs. All submissions will not be considered and do not constitute any obligation.

Questions?

Martina Popovic, Talent Acquisition Partner Division Buildings, will be happy to answer your questions by email: martina.popovic@implenia.com