Project Assistant

As a leading provider in the field of construction and real estate in Switzerland, Implenia develops, implements and manages living spaces, working environments and infrastructures for future generations in Switzerland and Germany. Implenia also offers tunnel and infrastructure construction projects on other markets. The company combines the expertise of highly qualified consulting, development, planning and execution units under one roof to form an integrated and leading construction and real estate service provider at the multinational level. Based in Opfikon, near Zurich, Implenia employs more than 8,000 people (FTE) throughout Europe and generated sales of 3.5 billion Swiss francs in 2025. For more information, visit implenia.com. Missions - Administrative and Organizational • Editing, managing and monitoring contractual documents related to the project (contract, amendment, final account) • Assisting project managers and site managers with administrative tasks • Managing site offices (reception, mail, supply orders, conference room management, etc.) • Writing various correspondence, emails, notes. • Managing and entering company submissions, contracts, amendments (quotes, reports-) • Reviewing, correcting and distributing various minutes (MO sessions, site meetings) • Creating and monitoring databases, internal and external information, ... • Recording, classifying, ordering, archiving files, documents, notes and mail. • Ensuring the updating of documents according to certain regulations and directives • Organizing site events (groundbreaking, topping-out ceremony, inauguration, others) • Preparing project presentation materials (e.g. PowerPoint) • Establishing and preparing quotes for clients • Ensuring administrative monitoring of PPE files • Updating and maintaining tracking tables and databases • Ensuring administrative monitoring of buyers throughout the process • Coordinating exchanges between buyers, companies, partners and managers • Ensuring monitoring of buyer changes and their documentation Missions - Finance and Logistics • Establishing invoices and monitoring debtor/creditor invoicing • Supporting project accounting • Exporting financial data from SAP to the management table • Controlling documents such as invoices, bank guarantees, • Collaborating with the accounting department: monitoring urgent payments, providing information, follow-up. • Monitoring budgets and assisting in the preparation of financial reports • Ensuring compliance with deadlines and the proper circulation of information • Editing and monitoring customer/supplier invoicing Mission - Communication and Relations • Being a point of contact and reference for internal and external teams • Communicating important information on a regular basis • Collaborating with another assistant and ensuring replacement during absences (including reception) • Helping to train and integrate new employees • Participating in the continuous improvement of monitoring and communication processes What we offer: • A multicultural work environment with the opportunity to contribute to shaping a viable future • State-of-the-art technology and a modern workplace within a sustainable company • A company that encourages talent and the continuous training of its employees • The security of a financially solid, widely diversified and strongly anchored group in Switzerland • Flexible working models and modern working tools with the possibility of teleworking • An interesting selection of benefits: • 5 weeks of vacation and 9 compensated days per year • An internal pension fund with a very good coverage rate and 3 levels of contribution • Numerous discounts from renowned suppliers of products and services • Members of our team share in video what makes their experience at Implenia unique: https://youtu.be/wtuhlIfjJq8 If you identify with this description and want to join Implenia, we look forward to receiving your application. Do you have questions? Frédéric Lablanquie answers your questions. frederic.lablanquie@implenia.com Didn't you find an opportunity on Jobup.ch? All our offers are available on our career pages. You can find them by following these links: • For Implenia: To our page • For Wincasa: To our page At Implenia, we appreciate and live diversity. Our recruitment process is therefore focused on promoting diversity, equality and inclusion. *We do not accept applications submitted by recruitment agencies or any other intermediary. Any application sent through this channel will not be considered and does not constitute any commitment on our part.