START Center for Cancer Research is a leading organization in Phase I oncology clinical research, dedicated to accelerating the development of new cancer therapies. With a presence across the United States and Europe, we have participated in more than 1,300 clinical trials and contributed to the development of over 40 treatments approved by the FDA and EMA.

Executive & Administrative Assistant

Location: Madrid | 6-month temporary contract | Remote/Hybrid

We are looking for a highly organized, proactive and resourceful Executive & Administrative Assistant to join our team in Madrid.

In this role, you will provide high-level administrative and operational support to senior leadership, including the Vice President of Operations, while working closely with physicians, clinic leaders and teams across the organization. You will play a key role in managing complex schedules, coordinating international travel, organizing meetings and events, and ensuring the smooth day-to-day coordination of leadership activities in a fast-paced, international environment

What you'll be doing




- Provide proactive administrative support to senior leadership and clinical leaders.
- Manage complex calendars, meetings and competing priorities.
- Coordinate national and international travel, including itineraries, accommodation and supporting documentation.
- Organize internal and external meetings, conferences, congresses and company events.
- Coordinate meetings and activities involving pharmaceutical companies, sponsors, investigators, hospitals and other external partners.
- Prepare and manage expense reports, corporate card expenses, invoices and related documentation.
- Support Principal Investigators/Oncologists with advisory boards, conferences, speaking engagements and other professional activities.
- Act as a key point of contact between clinics, departments, leadership and external stakeholders.
- Maintain accurate electronic files, trackers, records and administrative documentati

📌 Executive & Administrative Assistant (Madrid)
🏢 START Center for Cancer Research
📍 Madrid