Solutions for Today’s Challenges. Vision for Tomorrow’s Opportunities.
Join William Blair, the Premier Integral Partnership.
Madrid Investment Banking Internship - October 2026 through March 2027
About the Team
Our M&A; advisory practice offers comprehensive financial advisory services and expert guidance. We serve buyers and sellers by providing in-depth financial and strategic analysis, identifying transaction partners, developing creative deal structures, and negotiating complex transaction terms. Our leadership position in the middle market and strong transaction activity enable us to clear the market globally in search of the best transaction partners. Our bankers are true experts in their sectors and deeply understand the competitive landscape and deal environment facing our clients.
Take the opportunity to build on the fundamentals of your academic background, gain practical knowledge to help prepare you for your next steps and be part of an organization that fosters innovation and invests in our most important asset, our people.
Job Summary & Responsibilities




We are offering talented students and recent graduates an exciting opportunity to work in the demanding field of Investment Banking (Mergers & Acquisitions) for a six-month internship from October 2026 - March 2027 in our Madrid office. This is a fantastic opportunity to become an integral part of our team and gain live experience working for a global investment bank. Our program provides all interns with the unique opportunity to:
Work alongside current Analyst, Associate, and VP over the course of six months
Take on all functions of a full-time analyst
Assist deal teams in live transactions
Perform financial due diligence, research, analysis, and documentation of potential and live transactions
Receive direct client exposure in a culture of collaboration and accountability
Draft pitch materials, information memorandums, management presentations, and other relevant communications
Identify potential M&A; an

📌 Madrid Investment Banking Intern
🏢 William Blair
📍 Madrid