Senior Administrator

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

Are you an experienced corporate and fiduciary services professional who enjoys building strong client relationships, delivering exceptional service and supporting complex client structures?

We have an exciting opportunity for a Senior Administrator to join our Client Services team in Guernsey. In this role, you’ll be responsible for administering a diverse portfolio of corporate and fiduciary clients, supporting them throughout their lifecycle from onboarding through to ongoing administration. You’ll work closely with colleagues across Client Services, Risk and Compliance, while helping to maintain the high standards of service and governance our clients expect.

This is a varied role that offers the opportunity to develop technical expertise, support junior team members and contribute to the continued success of a collaborative and client-focused team.

If you would like to join an ambitious and forward thinking firm whose inclusive culture and values recognise that its people are fundamental to its success, we would love to hear from you.

Applications Closing Date: 7 November

About the role

In this role, you’ll:

• Manage the administration of a diverse portfolio of corporate and fiduciary clients, ensuring high standards of service and delivery.
• Develop and maintain a thorough understanding of client structures, transactions and activities.
• Build and maintain strong client relationships while managing expectations and identifying opportunities for repeat business and referrals.
• Assist with the establishment, onboarding and administration of Guernsey companies, partnerships, trusts and other fiduciary structures.
• Manage workflows effectively, ensuring deadlines are met and work is completed accurately and efficiently.
• Monitor work in progress, time recording and debt collection activities where applicable.
• Work closely with Risk and Compliance colleagues to ensure client due diligence requirements and periodic reviews remain up to date.
• Support junior team members by sharing technical knowledge and providing guidance where required.
• Maintain client records and data within internal systems and ensure compliance with policies, procedures and regulatory requirements.
• Support the management team with operational matters and contribute to continuous improvement initiatives.

About you – essential requirements

• Proven experience within corporate, trust or fiduciary services, with a in depth understanding of relevant principles and concepts.
• Excellent organisational and prioritisation skills, with the ability to manage competing deadlines effectively.
• Excellent interpersonal and relationship management skills, with a commitment to delivering outstanding client service.
• Ability to identify opportunities for continuous improvement, process efficiencies and automation.
• Part qualified or fully qualified STEP or CGI (formerly ICSA), or working towards a professional qualification.
• Working knowledge of fiduciary administration systems and document management platforms would be advantageous.

We believe in inclusive workplaces where everyone feels seen, heard, valued, and respected. We pride ourselves in providing accessible development opportunities to all our people, where everyone feels like they belong and can thrive.

We are committed to providing an inclusive and barrier-free recruitment process. If you need this job description or the application form in an alternative format, or if you would like to discuss the recruitment process with our Recruitment team, please email [e-mail].