Administrative Assistant — Internship

Are you looking to start your administrative career in a solid, international company that is a leader in its industry? If you are a student ready to gain real hands-on experience in a multinational environment, this internship could be the opportunity for you.

Tennant is a global leader in industrial cleaning solutions, and we are looking for an Administrative Assistant Intern to join our team in Agualva-Cacém, Portugal. You will work alongside an experienced team and play a hands-on role in contract management, customer administration, and service operations — learning how a multinational runs its day-to-day administrative processes.

What you will learn and do

Contract management

· Help create and maintain rental contracts for equipment and machines.

· Support the management of contract documentation and annual contract records.

· Assist in preparing and sending completed contracts, monthly fees, and summarized addendums.

· Support the opening and closing of rental services and contracts.

Customer & data administration

· Update equipment and customer information within SAP and internal systems.

· Help create and maintain customer accounts, including Sold-to and Ship-to records.

· Provide administrative support to customers and internal stakeholders.

Service operations support

· Support the creation and management of Preventive Maintenance (PM) plans.

· Help open and manage service requests and administrative cases.

· Support operational, service, and commercial teams with day-to-day administrative activities.

What we are looking for

Profile

· Student currently enrolled in an educational institution, able to sign a curricular internship agreement (estágio curricular) — this is essential.

· Studies in Administration, Management, Business, or a related field (preferred).

· Interest in building a career in administration, customer support, or operations.

Skills & competencies

· Problem-solving mindset with a positive and solution-oriented attitude.

· Strong communication skills, with the ability to clearly express ideas and actively listen.

· Team player who enjoys collaborating and supporting colleagues.

· Empathy and a customer-focused approach.

· Flexibility and adaptability to changing priorities.

· Proactive attitude and willingness to learn.

· Strong organizational skills and attention to detail.

Knowledge

· Good knowledge of Microsoft Office applications.

· Any exposure to ERP systems is a plus (no prior experience required).

Nice to have

· Familiarity with SAP.

· Interest in industrial, manufacturing, or service-related environments.

Languages

· Fluent English (written and spoken).

What we offer

· A structured internship in a stable, established multinational — a market leader, not a startup.

· Real, hands-on tasks and mentorship from an experienced international team, not just observation.

· Exposure to core business tools (SAP, internal systems) and to how a global organization manages contracts, customers, and service operations.

· A strong first line on your CV and a real professional network in an international company.

· Full-time schedule, Monday to Friday, 9:00 AM to 6:00 PM.

· Duration: 6 months. Start date: September. Location: Zona Industrial Alto do Colaride, Rua C, Armazém B, 2735-207 Agualva-Cacém, Portugal