PMO / Project Assistance, 60-80%
ISS Schweiz
Zürich Altstetten
Key information
- Publication date:17 December 2025
- Workload:60 – 80%
- Place of work:Zürich Altstetten
Job summary
Join ISS, a leader in creating optimal work environments. Be part of a supportive team committed to quality service.
Tasks
- Support project management with administrative and organizational tasks.
- Create project-specific documents like contracts and correspondence.
- Manage project management tools and maintain documentation.
Skills
- Commercial training or equivalent qualification required.
- Experience in a similar role with a focus on construction.
- Proficiency in Office 365 and interest in AI tools.
Is this helpful?
At ISS, we all call ourselves Placemakers. Our goal is for our customers to find an optimal environment at their workplace and feel comfortable. Our 14,200 employees/Placemakers have a high level of service understanding to meet the diverse customer needs. We fulfill these according to the highest quality standards.
In this exciting role, you are part of the Construction Project Management team, which consists of around 100 architects, engineers, move managers, and a strong Project Office throughout Switzerland. With this team, we implement all construction measures for our customers. This includes designing new office work environments, infrastructural facility replacements, lifecycle-driven comprehensive renovations, sustainable projects supporting the Net-Zero strategy, as well as nationwide construction programs of all kinds. We ensure that from optimal consulting / conception / planning / implementation to operation, the defined goals (costs, deadlines, quality, and communication) of the construction projects for our mandate customers are achieved.
Your main tasks:
- Strengthening the East Region team / supporting project management in administrative, organizational, and strategic matters
- Preparation of project-specific documents such as order confirmations, correspondence, tender documents/contracts, and the like
- Checking, coding, and recording of receipts in the accounting system, performing booking corrections and transfers, as well as reconciling construction accounting with customer accounting/financial system
- Support in preparing offers, compiling the basis for invoicing and project controlling
- Initialization, maintenance, and control of the project management tool (Messerli)
- Archiving and document filing (physical and electronic)
- Support in developing/improving templates and processes as well as in internal quality management
Your profile:
- Completed commercial training or equivalent qualification
- Several years of professional experience in a comparable position
- Interest in the construction industry and construction technology
- Proficient use of Office 365, interest in AI tools like Copilot is an advantage
- Independent and reliable working style, high customer orientation and team spirit, as well as willingness to learn new things
- High customer orientation as well as independent and entrepreneurial thinking and acting
- Very good German skills in spoken and written form; English and/or French skills are an advantage
Ready for us? We are ready for you.
Every day at ISS Switzerland, we work to ensure that offices, laboratories, airports, production facilities, train stations, schools, and hospitals function and are livable. Our 14,200 employees create living spaces throughout Switzerland where over a million people feel comfortable and can develop every day. ISS stands for innovation, service quality, and direct customer relationships. As an employer, we rely on fair employment conditions, equal pay for equal work, and secure jobs. Appreciation is more than a promise for us – it is reflected in our five programs and in over 200 training and development opportunities. Because those who bear responsibility must also offer perspectives – and without us, many things would not work.
