Executive Assistant & Office Support

arcesiumllc· Administration
Apply Now ↗
📍 Lisbon

About this role

 

Company Overview

Arcesium is a global financial technology firm that solves complex data-driven challenges faced by some of the world’s most sophisticated financial institutions. We constantly innovate our platform and capabilities to meet tomorrow’s challenges, anticipate the risks our clients encounter, and design advanced solutions to help our clients achieve transformational business outcomes.   

Financial technology is a high-growth industry as change and innovation continue to disrupt the status-quo and prompt major transformation. Arcesium is at a particularly interesting time in our own growth as we look to leverage our successfully established market position and expand operations in pursuit of strategic new business opportunities. We value intellectual curiosity, proactive ownership, and collaboration with colleagues, and we empower you to meaningfully contribute from day one and accelerate your professional development.

Arcesium is growing in Europe, and we're looking for an Executive Assistant to support our office and administration area in Lisbon, as well as our global leadership. You'll keep the day-to-day running smoothly, help leaders make the most of their time, and be a trusted point of contact for the people around you.

What You'll Do
  • Manage local bookings and administration for the Lisbon office, including meeting rooms, vendors, supplies, deliveries, and facilities coordination.
  • Support team meetings, social gatherings, town halls, and office events, from concept to follow-up.
  • Partner with local and global teams (HR, Workplace, IT, Finance) on office and administration needs for Europe.
  • Manage and coordinate calendars for Arcesium leaders, including globally scheduled meetings, proactively handling time zones, priorities, and conflicts.
  • Provide on-the-ground support when ExCo members travel to Lisbon, including transfers, hotel and restaurant bookings, itineraries, and meeting logistics.
  • Support leadership travel as needed. Our Sweden-based team manages most travel, but you will be open to picking up bookings, visa coordination, and itinerary changes when required.
  • Take on ad hoc projects assigned by the business leader and leadership team, driving them to completion and keeping stakeholders informed.
What You'll Need
  • 4-6 years of relevant experience as an executive assistant, ideally supporting senior leaders in a global or multi-location organisation.
  • Strong analytical and organisational skills, with excellent attention to detail and the ability to manage multiple projects at once.
  • Excellent written and verbal communication skills in English. Portuguese is a strong plus.
  • Proven technical skills, particularly with Microsoft Office (Outlook, Excel, PowerPoint, Teams), and comfort learning new tools quickly.
  • Absolute discretion when handling confidential information.

 

Recruiting Security
Emails from genuine Arcesium recruiters who are employees of the company will always come from the @arcesium.com domain. In some cases, you may also be contacted by independent search firms engaged to recruit on our behalf; emails from their employees should always come from their firm's applicable domain. We'll never ask for your banking information or any payment as part of the recruiting process. If something seems off or you're contacted by an unexpected third party, please reach out to us at careers@arcesium.com (US/UK), careers-india@arcesium.com (India) or careers-europe@arcesium.com (Portugal/Sweden). 

Arcesium is an equal opportunity employer.

Frequently Asked Questions

Is the salary disclosed for the Executive Assistant & Office Support position at arcesiumllc?
The salary for this Executive Assistant & Office Support role at arcesiumllc is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Executive Assistant & Office Support position at arcesiumllc located?
This Executive Assistant & Office Support role at arcesiumllc is based in Lisbon. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Executive Assistant & Office Support at arcesiumllc belong to?
This Executive Assistant & Office Support position is part of the Administration department at arcesiumllc. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Executive Assistant & Office Support position at arcesiumllc?
Click the "Apply Now" button on this page. You will be redirected to arcesiumllc's official application portal hosted on greenhouse where you can submit your application directly.
When was the Executive Assistant & Office Support job at arcesiumllc posted?
This Executive Assistant & Office Support position at arcesiumllc was posted on Oct 8, 2026. Apply as soon as possible — early applications are often reviewed first.
Executive Assistant & Office Support
arcesiumllc
Apply for this role ↗

You'll be redirected to arcesiumllc's official application page on Greenhouse.