Business Administration Intern

Location: Office based, Madrid

Schedule: Full time, 37.5 hours per week

About Refinery89 At Refinery89, we help digital publishers maximize their advertising revenue through advanced programmatic technology, data driven optimization, and strategic expertise.

Headquartered in Madrid, with a growing international team, we work with publishers across Europe and beyond to make digital advertising more transparent, efficient, and impactful.

As we continue to grow, we are looking for motivated people who enjoy learning, taking ownership, and contributing to the day to day operations of an international technology company.

Job Description We are looking for a Business Administration Intern to join our team and support the day to day administrative and financial operations of the business.

This is an entry level opportunity ideal for someone who is organized, detail oriented, comfortable working with numbers, and interested in developing practical experience in business administration within an international company.

You will work closely with our Finance team and gain hands on exposure to accounting processes, invoice management, reconciliations, expenses, and general business operations.

No previous work experience is required. Full training will be provided internally. Responsibilities

• Record and process incoming invoices across the company's different entities.
• Support Accounts Payable and other recurring finance administration activities.
• Assist with bank and credit card reconciliations.
• Process and review employee expenses according to company policies.
• Maintain accurate administrative and financial records.
• Organize and verify supporting documentation related to financial transactions.
• Support recurring administrative and operational processes within the Finance team.
• Assist with additional business administration and finance related tasks when required.

Requirements Must Have

• Currently enrolled in or recently graduated from a university degree related to Business Administration, Finance, Accounting, Economics, Management, or a similar field.
• Comfortable working with spreadsheets, particularly Excel, and learning new software tools.
• Strong attention to detail and accuracy.
• Good organizational and time management skills.
• Excellent written communication in English.
• Excellent written communication in Spanish.
• Proactive attitude and willingness to learn.

Nice to Have

• Interest in finance, business operations, technology, or fast growing companies.
• Previous exposure to accounting, administration, or finance through university coursework or projects.

No previous professional experience required. Full training will be provided internally. What We Offer

• Hands on internship with internal training and mentorship.
• Practical experience in business administration and finance operations.
• Exposure to accounting processes across an international organization.
• A collaborative and international work environment.
• Flat organizational structure with a high degree of ownership and autonomy.
• Opportunity to understand how the operational side of a growing technology company works.
• Experience within the AdTech industry and a company serving publishers across Europe.
• A culture focused on transparency, continuous improvement, and operational excellence.

Interested?

If you are organized, detail oriented, eager to learn, and interested in gaining practical experience in business administration within an international technology company, we would love to hear from you.

Apply now and become part of Refinery89's journey to build the future of publisher monetization.