Senior Administrator, Corporate & Fiduciary Services

Mourant; Guernsey (WY); On-site; USD 60,000 - 80,000; Full time

Job summary

Mourant in Guernsey is seeking a Senior Administrator to join our Client Services team. You will administer a diverse portfolio of corporate and fiduciary clients from onboarding through ongoing admin, building strong relationships and ensuring high service standards.

You will work with Risk and Compliance colleagues, support junior team members, and contribute to process improvements while maintaining governance. A proactive, client‑focussed mindset is essential.

Qualifications

• Experience in corporate, trust or fiduciary services with understanding of relevant principles.
• Excellent organisational and prioritisation skills to manage competing deadlines.
• Strong interpersonal and relationship management to deliver outstanding client service.
• Ability to identify opportunities for continuous improvement, efficiencies and automation.
• Working knowledge of fiduciary administration systems and document management platforms is advantageous.

Responsibilities

• Administer a diverse portfolio of corporate and fiduciary clients, ensuring high service standards.
• Develop and maintain understanding of client structures and activities.
• Build and maintain client relationships, manage expectations and opportunities for repeat business.
• Assist with onboarding and administration of Guernsey entities and structures.
• Manage workflows, deadlines and data accuracy; monitor time recording and debt collection where applicable.
• Collaborate with Risk and Compliance to keep due diligence up to date.
• Mentor junior team members and share technical knowledge.
• Maintain client records in internal systems in line with policies and regulations.
• Support management with operational matters and continuous improvement initiatives.

Skills

Client relationships

Time management

Communication

Process improvement

Fiduciary services knowledge

Team mentoring

Education

STEP or CGI (ICSA) qualification

Job description

Mourant in Guernsey is seeking a Senior Administrator to join our Client Services team. You will administer a diverse portfolio of corporate and fiduciary clients from onboarding through ongoing admin, building strong relationships and ensuring high service standards.

You will work with Risk and Compliance colleagues, support junior team members, and contribute to process improvements while maintaining governance. A proactive, client‑focussed mindset is essential.