Job Description

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 talented professionals who thrive in dynamic environments, take ownership of their work, and contribute to building scalable processes that support the company's long-term success.

We are looking for a Finance Intern to join our Finance team and support the day-to-day accounting operations of the business. This is an entry-level opportunity ideal for someone detail-oriented and eager to learn, who enjoys working with numbers and building a solid foundation in finance operations. No previous work experience is required — full training will be provided internally. You'll gain hands-on exposure to accounts payable, reconciliations, and expense processing within an international organization.

Responsibilities

1. Record and book all incoming invoices in Accounts Payable across all entities.

2. Support bank and credit card reconciliations.

3. Process employee expenses in line with company policies.

4. Maintain accurate records and ensure proper documentation of financial transactions.

5. Assist with recurring accounting activities and other finance-related tasks as needed.

Requirements

Must-Have

• Comfortable working with spreadsheets (Excel) and learning new software tools.

• Strong attention to detail and accuracy.

• Excellent written communication in English.

• Proactive, organized, and eager to learn.

Nice to Have

• Spanish or another EU language.

• Interest in finance, technology, or fast-growing business environments.

No previous work experience required — full training provided internally.

What We Offer

• Hands-on internship with full internal training and mentorship.

• Exposure to real accounting operations across an international organization.

• A collaborative, international work environment.

• Flat organizational structure with a high degree of ownership and autonomy.

• Opportunity to contribute to a growing AdTech company serving publishers across Europe.

• A culture focused on transparency, continuous improvement, and operational excellence.

Interested?
If you're detail-oriented, eager to learn, and excited to build a foundation in finance within a growing international company, we'd love to hear from you.

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

• Internship

• Full time

• Office-based