Administrative Assistant

Genève

Key information

Publication date:06 January 2026
Workload:100%
Place of work:Genève

Job summary

Join ISS as an administrative assistant in a supportive role. A dynamic work environment with growth opportunities awaits you.

Tasks

Provide administrative support to operational managers effectively.
Prepare tender documents and manage invoicing processes efficiently.
Organize electronic archiving and manage correspondence proficiently.

Skills

CFC in commercial employment or administrative diploma required.
Strong knowledge of service industry and invoicing processes.
Excellent written skills and proficiency in MS Office tools.

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Administrative Assistant

At ISS, we all call ourselves "Placemakers." Our goal is to provide our clients with the best possible environment and to ensure they feel comfortable in their workplace. Our 14,200 employees/placers have a high level of knowledge in service matters to meet the various needs of our clients. We carry them out according to the highest quality standards.

Your tasks:

- Administrative assistance and support to Operational Managers
- Preparation of tender and submission documents
- Coding of supplier invoices
- Preparation of offers and invoices
- Follow-up of tickets via a ticketing system
- Electronic archiving of documents
- Drafting letters and taking minutes
- Management of mail and emails
- Assistance and support in result analysis
- Preparation of client and supplier contracts
- Follow-up/modification of amendments
- Various other administrative tasks inherent to the role

Your profile:

- Federal VET Diploma as a commercial employee or administrative commercial diploma
- Knowledge and experience in the service sector
- Knowledge and experience in billing, debtors, and creditors,
- Comfortable with numbers and perfect mastery of Excel
- Proficient with common IT tools (MS Office)
- Excellent writing skills
- Perfect command of French (minimum level C1)
- Knowledge of English and/or German (an asset)
- Versatile, proactive, and enterprising person
- Excellent teamwork skills and great interpersonal ease
- Good stress resistance
- Organized person who manages priorities well
- Clean criminal record and non-prosecution certificate will be requested

Ready for us? We are ready for you.
Every day at ISS Switzerland, we work to ensure that offices, laboratories, airports, production sites, train stations, schools, and hospitals function and are pleasant to live in. Our 14,200 employees create living spaces throughout Switzerland where more than a million people feel good and can thrive every day. ISS stands for innovation, quality of service, and direct relationships with clients.

As an employer, we focus on fair employment conditions, equal pay for work of equal value, and secure jobs. For us, respect is more than a promise – it is reflected in our five programs and in more than 200 training and development opportunities. Because those who take on responsibilities must also offer prospects – and without us, many things would not work.