Executive Assistant to Global Leaders – Lisbon Office

Arcesium LLC; Lisboa; On-site; EUR 32,000 - 46,000; Full time

Job summary

Arcesium LLC is expanding its European presence and seeks an Executive Assistant to support our Lisbon office and global leadership. You will keep leaders' calendars, arrange travel, coordinate events, and act as a trusted point of contact across Europe.

Ideal candidates have 4–6 years of executive support experience, superb organisational skills, and fluent English with Portuguese being a strong plus. Proficiency with Microsoft Office and discretion are essential for success.

Qualifications

• 4–6 years of executive assistant experience in global or multi-location organisations.
• Strong analytical and organisational skills with excellent attention to detail.
• Excellent written and verbal English; Portuguese is a strong plus.
• Proficient with Microsoft Office and quick to learn new tools.
• Absolute discretion when handling confidential information.

Responsibilities

• Manage local bookings and administration for the Lisbon office, including rooms, vendors, supplies, 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 admin needs for Europe.
• Manage and coordinate calendars for Arcesium leaders, including globally scheduled meetings and time zones.
• Provide on-the-ground support when ExCo members travel to Lisbon, including transfers, hotel and restaurant bookings, itineraries, and meeting logistics.
• Take on ad hoc projects assigned by the business leader and leadership team, driving them to completion and keeping stakeholders informed.

Skills

Executive support

Calendar management

Travel coordination

Stakeholder comms

Time zone mgmt

Tools

Microsoft Office

Job description

Arcesium LLC is expanding its European presence and seeks an Executive Assistant to support our Lisbon office and global leadership. You will keep leaders' calendars, arrange travel, coordinate events, and act as a trusted point of contact across Europe.

Ideal candidates have 4–6 years of executive support experience, superb organisational skills, and fluent English with Portuguese being a strong plus. Proficiency with Microsoft Office and discretion are essential for success.