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Overview
Job details
Internship contract
Full-time hours.
Requirements
Have the right to work in Spain
Refinery89 doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Work on-site in Madrid
No relocation package mentioned.
Pay & benefits
What you'll get
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.
Internship
Full time
Office-based
Requirements
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.
The role
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.
What you'll do
Job Description
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.
Record and book all incoming invoices in Accounts Payable across all entities.
Support bank and credit card reconciliations.
Process employee expenses in line with company policies.
Maintain accurate records and ensure proper documentation of financial transactions.
Assist with recurring accounting activities and other finance-related tasks as needed.
How you'll work
Location: Office-based (Madrid)
Schedule: Full-time, 37.5 hours per week
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.
About Refinery89
Refinery is a technology company that provides a platform for managing and optimizing digital advertising campaigns. The company's software helps brands and agencies automate, measure, and improve their performance across various digital channels, with a focus on data-driven decision-making and efficiency. Refinery operates globally, with a presence in the US and Europe, and serves a range of clients from direct advertisers to agencies.
In Spain, Refinery has established a growing office in Madrid, which serves as a hub for its Southern European operations. The company is known for a data-centric, performance-oriented culture, and its Spanish office actively hires international talent, particularly in technical roles like data science, product management, and software engineering. For international professionals, Refinery offers a dynamic, fast-paced environment where English is commonly used, making it an accessible entry point into the Spanish tech ecosystem.
- Founded
- 2015
- Employees
- 100–500
- Headquarters
- New York, USA
- In Spain
- Madrid
- Website
- refinery89.com
Good to know if you are moving
- Refinery's Madrid office is a key hub for its Southern European operations, offering a path for international hires to work in Spain.
- The company's work culture is described as data-driven and product-focused, which can be appealing for professionals with a technical background.
- As a US company with a Spanish office, Refinery offers an international environment where English is commonly spoken, easing the transition for non-Spanish speakers.
- The company has a relatively small, agile team, which can mean faster decision-making and more direct impact for new hires.
- Refinery's roles in Spain span product management, data science, and software engineering, indicating a demand for technical talent.
In their own words
About the company & team
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.
Location
Refinery89 · Madrid
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