We are looking for a motivated Finance Operations Intern to join our Finance team for a fulltime (40 hours per week) 6-month internship, beginning on September 1, 2026. You will work closely with the rest of our Finance & Accounting team across revenue operations, billing, reporting, and process improvement initiatives, gaining hands-on exposure to a broad range of finance activities. In this role, you will support key finance operations with a strong focus on revenue, billing, invoicing, customer support, process improvement, automation, and reporting.

This internship is ideal for someone who is detail-oriented, analytical, curious about finance operations, and interested in how digital tools and AI can improve business processes.

Key Responsibilities

• Support invoicing and billing operations - Assist the Revenue and Billing Analyst with the timely and accurate issuance of invoices, ensuring correct coding, approval follow-up, and alignment with internal procedures.
• Provide customer support by email - Support customer care activities by responding to customer requests and needs related to billing, invoicing, payment status, documentation, and other finance-related queries.
• Analyze invoice processing flows - Review the invoice process to identify bottlenecks, inefficiencies, delays, and recurring issues. Help document findings and propose practical improvement ideas.
• Implement AI-driven process improvement – Work on an end-to-end process optimization supported by  AI to streamline invoicing, reduce manual work, improve response quality, and enhance the overall billing workflow under the guidance of the Finance team.
• Assist the Finance team - Support the Finance team with ad-hoc analyses, reconciliations, reporting tasks, data checks, and other finance-related projects as needed.

What You Will Learn

• Revenue and billing operations
• Customer-facing finance communication
• Automation and digitalization in a growing international organization
• Ad-hoc financial analysis and reporting
• Working in a mission-driven company active in sustainability data and real assets

Requirements

We are looking for someone who:

• Has a background in Finance, Accounting, Business Administration, Economics, Data Analytics, or a related field
• Has strong attention to detail and enjoys working with numbers, systems, and structured processes
• Is comfortable working with Excel; knowledge of financial systems, CRM tools, Power BI, or automation tools is a plus
• Has good written communication skills and can respond professionally to customer inquiries
• Is curious about process improvement, automation, digitalization, and the practical use of AI in finance operations
• Is fluent in English; additional languages are a plus

Benefits

• A 6-month internship in an international and purpose-driven organization with practical exposure to finance operations, billing, accounting, and customer support
• The opportunity to contribute to process improvement and AI-enabled efficiency initiatives
• A collaborative team environment where you can learn from experienced finance professionals
• Exposure to the sustainability, real assets, and investment data sectors
• Monthly internship allowance of EUR 1.200
• 12 paid days off
• Free, healthy lunch at the GRESB office
• Free public transport to and from the GRESB office (in Amsterdam) within the Netherlands

GRESB is an inclusive workplace, one at which all workers — regardless of their gender, race, ethnicity, national origin, age, sexual orientation, identity, education, or disability — feel valued and respected. We are committed to a non-discriminatory approach to hiring and provide equal opportunity for employment and advancement in all of our teams and programs. We respect and value diverse life experiences and heritages and work to ensure that all voices are valued and heard.

About GRESB

GRESB is a mission-driven organization and strategic partner for sustainable and high-performing investments across real assets and climate-critical industries. We help investment professionals mitigate risk and build portfolios that are resilient, efficient, and financially attractive for long-term success.

Our vision: An investment industry that plays a central role in creating a sustainable world.

Our mission: To provide financial markets with actionable sustainability insights, data and benchmarks. More than 150 global institutional and financial investors with USD 53 trillion in assets under management rely on GRESB to help guide their investment decisions, mitigating risk, improving portfolio quality, and driving long-term financial success.

The GRESB team is an energetic group of more than 100 individuals from diverse backgrounds with experience spanning sustainability, data science, software development, real estate, infrastructure, and the capital markets. Most of us work out of our head office in Amsterdam or one of our satellite offices in London, Paris, Berlin, Boston, Singapore, or Sydney. We’re passionate about tackling the sustainability challenge by providing the insights that will power the markets of the future and enable investors to allocate the world’s capital in a more responsible way.