3 Office manager jobs in London

We’re looking for highly organised, proactive and resilient Executive Assistant & Office Manager to provide exceptional support to our CEO and Senior Management Team and help ensure the smooth running of our Reception and Administrative Office.

This is a varied and pivotal role at the heart of a small, retirement community on a beautiful 13-acre site in South-East London (Kent/Surrey border).  You will manage the CEO’s diary and inbox, prepare papers and correspondence, support the Senior Management Team, coordinate key organisational projects, and personally deliver day-to-day office administration, including covering reception.

This role would suit an individual who thrives in a varied environment, is confident managing multiple priorities, and is willing to take a practical, hands-on approach - no two days are the same. You will anticipate needs, help drive priorities forward, and play a key role in enabling the CEO, Senior Management Team and central officer to operate effectively.

The role

• Provide proactive executive support to the CEO, including diary and inbox management, briefing preparation, correspondence and research.
• Coordinate and service Senior Management Team meetings, ensuring agendas, papers, notes and actions are well managed.
• Project manage key organisational initiatives, including policy reviews, compliance-related projects and organisational documents.
• Oversee the efficient running of the office, including reception, office systems, supplies, meeting rooms and administrative procedures.
• Support resident services administration.
• Maintain accurate records, support reporting and act as a confident user of office and CRM systems.

About you

You will have a track record of supporting senior leaders, excellent organisational skills and the confidence to manage competing priorities with discretion and sound judgement. You will be a clear communicator with a high standard of written English and strong Microsoft 365 skills.

It is important that you enjoy working in a hands-on role in a varied customer facing environment.

Further details can be found in the job description and person specification

This is a pivotal role at the heart of ISEAL, bringing together strategic and operational HR leadership and effective office management to create an inclusive, well-supported workplace. The Manager, HR and Office Management will translate our new organisational strategy into forward-looking people practices, while ensuring that colleagues are supported by the policies, systems, resources and working environment they need to thrive.

Working closely with directors, the leadership team, line managers and two HR Coordinators, the postholder will shape the employee experience across the full journey—from recruitment and induction to development, progression and exit. The role will also oversee workplace services, internal communications, budgets and legal compliance across multiple jurisdictions (UK, Netherlands, Sweden, Switzerland, Belgium, and Canada), helping a hybrid and remote workforce stay connected, informed and confident. As an additional resource, an experienced HR consultant delivers recruitment campaigns and other special projects.

We are looking for an experienced generalist HR professional, who combines strategic insight with practical delivery and sound judgement. You will bring current employment law knowledge, strong influencing and coaching skills, a genuine commitment to inclusion and wellbeing, and the confidence to improve policies, systems and ways of working in an international, values-led organisation. Above all, you will be collaborative, resilient and motivated by ISEAL’s mission to accelerate positive change for people and the planet.

The key responsibilities we entrust you with:

HR Management

• Develop and deliver a HR strategy aligned with the organisation’s new strategic direction, translating priorities into sustained impact
• In collaboration with Leadership team, advise on and implement resource and overhead planning to support strategic objectives
• Shape, continuously improve and communicate ISEAL’s HR policies, procedures and processes, enabling colleagues in a hybrid/remote setting to understand them easily and apply them confidently
• Deliver a proactive approach to employment compliance, anticipating legislative developments across 6 jurisdictions with ISEAL staff and translating them into clear, timely organisational actions
• Champion a thriving organisational culture, empowering colleagues at every level to bring ISEAL’s values to life in their decisions, behaviours and ways of working
• Cultivate a workplace where wellbeing is embedded in everyday practice and open, constructive dialogue flows well between employees, line managers and across the organisation
• Foster and continually enhance an inclusive employee experience across the full journey—from recruitment and induction to performance, progression, learning and development, and exit
• Navigate emerging employee matters with care, sound judgement and consistency, equipping line managers to confidently address both routine and complex HR situations
• Serve as a trusted strategic adviser to directors and the leadership team, bringing forward progressive HR practices that strengthen organisational effectiveness and employee engagement
• Coordinate support of a dedicated external HR consultant for recruitment and special projects
• Oversee maintenance of all personnel and HR records in appropriate systems

Office Management

• Lead on maintaining a comfortable and well-functioning workplace, including continuous review of the overall physical infrastructure needs and provision 
• Shape and communicate forward-looking workplace policies and practices, pioneering flexible approaches to space, collaboration and ways of working.
• Create a safe, welcoming workplace by leading the effective delivery and continuous improvement of office services, facilities, IT equipment and resources
• Act as first point of contact for any issues raised by staff relating to the office

Other

• Lead and continually strengthen internal communications that connect colleagues, reinforce shared purpose and encourage meaningful participation, including monthly staff meetings, the quarterly support staff newsletter and organisation-wide communications.
• Lead and empower two HR Coordinators, creating the conditions for them to grow, develop and deliver excellent support across the organisation
• Steward the HR and premises budgets with foresight and accountability, directing resources towards the organisation’s people, workplace and strategic priorities.
• Build own capacity and knowledge on all matters related to organisational legal compliance

Essential attributes / skills / knowledge

• Substantial generalist HR management experience, combining strategic understanding with confident delivery of day-to-day people operations
• Demonstrable experience of developing and implementing HR strategies aligned with organisational priorities
• Strong track record of designing, reviewing and embedding accessible HR policies, procedures and processes
• Proven experience of managing diverse employee relations matters with sound judgement, fairness, discretion and appropriate confidentiality
• Current, practical knowledge of UK employment law and the ability to translate legislative change into clear, compliant policies and advice
• Excellent communication skills both in person and in a hybrid/remote environment with an ability to influence senior leaders and coach line managers at all levels
• Experience working in values-led culture that supports employee wellbeing, engagement and open dialogue
• Commitment to EDI principles and experience implementing approaches that foster an inclusive workspace
• Varied experience of HRIS solutions and, ideally, with the implementation of new systems to enhance HR operations
• Experience working in an international setting covering a variety of jurisdictions and employee locations
• Proven people-management capability, including coaching, developing and empowering team members to work to the best of their ability
• Strong planning, prioritisation and budget-management skills, with the ability to balance strategic projects and operational demands
• High levels of integrity, initiative and resilience, with a collaborative, solutions-focused approach to organisational change and continuous improvement
• A personal commitment to and interest in creating a more sustainable world

Desirable

• Oversight of international payrolls
• CIPD Level 5 qualified

ISEAL´s culture and how we will help you thrive

Our values are Connection, Empowerment, Inspiration, Wellbeing, Effective Working and Creativity.

These are traits we value in each other and in the organisation overall and we instil these in all our processes and interactions. The issues we work on are of a global nature and our team reflects this, with individuals from many different backgrounds and nationalities. We know this diversity adds to the high quality of work we deliver as an organisation and through our commitment to diversity and inclusion we want to add strengths and perspectives in our team with each recruitment. Diversity for us includes race and gender identity, age, disability status, sexual orientation, religion and many other areas forming part of someone´s identity. We are proud to be an equal opportunities employer.

As an organisation, we also support our people in their personal and professional development, with specific budgets and processes enabling individuals to take advantage of growth and development opportunities. We offer 25 days of annual leave, to which we will add a day a year after 2 years (to a maximum of 30 days), as well as an extra five days as a one off once you have been with us for a full five years.

We recognise individuals’ preferences when it comes to where and when to work through a hybrid working model as well as the opportunity to apply for flexible working arrangements to suit individual´s needs.

Other relevant information

Term: This is a permanent contract

Working hours:               80 % (30 hours) could be spread across 4 or 5 days

Salary: £57,000-62,000, depending on experience (pro rata for less than 100%)

Location:                        London is the preferred location. The role requires a minimum of 2 days per week in the office. 

                                       Applicants will need to provide evidence that they are entitled to work in the UK.

International travel:        The post holder will be required to undertake occasional international travel

Ideal start date:            November/December 26 ideally

Reporting to:                  Director, Finance & Operations

How to apply

Specific enquiries about this role and the application process can be sent to the recruitment(@)isealalliance(.)org.

Deadline for applications is 4 October 2026. Please note that we will only contact shortlisted applicants.

Cover letter: We would like to see candidates´ own writing in the cover letter and discourage the use of AI for this purpose.

Interview process

Please note that we will endeavor to keep to this schedule, but some dates may be subject to change.

Screening interviews (Teams): 7-12 October

Pre-interview timed exercises (between 60 – 90 minutes from home): 16-18 October (if applicable)

Panel interviews (in person): w/c 19 October

Decision: w/c 26 October

Accessibility

If candidates require additional time or other considerations for the interview process, we are committed to accommodating any reasonable requests. Please note that ISEAL will cover travel expenses for in person interviews for candidates travelling from outside of Greater London. ISEAL also covers caring expenses for candidates who are carers and need to arrange of cover for the duration of the interview/exercises