Office Manager and Operations Assistant - Part-Time
Are you detail-oriented and great at multitasking? Is seamless organisation your superpower? You’ll keep our office running smoothly, support operations, and handle tasks with efficiency and ease!
At GrantTree, we help innovative companies access the funding they need to bring their ideas to life. We specialise in R&D Tax Credits and Grants, working with some of the UK’s most exciting startups and scaleups. Our culture is open, supportive, and flexible – we trust our people to do great work in the way that suits them best.
As we continue to grow, we’re looking for an Office Manager & Operations Assistant to help us keep everything running smoothly. This is a dynamic role that blends office management with people-focused HR and ad hoc recruitment support. You’ll be the glue that keeps our workspace organised and welcoming while also supporting our hiring and HR processes to ensure we attract, onboard, and retain brilliant people.
What You’ll Be Doing
Office Management
Oversee the day-to-day running of the office, ensuring a productive and welcoming environment
Act as the first point of contact for office-related queries, coordinating suppliers and managing office supplies
Organise company events, team socials, and wellbeing initiatives
Manage health & safety compliance and keep policies up to date
Handle administrative tasks such as expense tracking, office budgets, and supplier contracts
Manage and maintain physical assets in the office, including IT equipment, office furniture, and other resources, ensuring they are well-maintained, tracked, and available when needed
Operations Support
Help with onboarding new hires, ensuring a smooth transition into the company
Keep HR records up to date and support HR processes such as performance reviews, employee engagement initiatives, and policy updates
Be a point of contact for employee queries, offering administrative support across HR and people operations
Provide flexible support with various recruitment tasks as needed, including interview coordination, and administrative duties.
What We’re Looking For
We’re after someone organised, proactive, and people-focused – someone who thrives on variety and enjoys making things run seamlessly behind the scenes. You’ll be a great fit if you have:
Experience in office management, HR support, recruitment, or a similar administrative role
Strong organisational skills and the ability to juggle multiple priorities
A proactive and problem-solving approach, always looking for ways to improve things
Great communication skills – you’ll be liaising with people across the business and externally
A friendly, approachable nature with a passion for creating a positive workplace culture
Familiarity with HR software and processes (or a willingness to learn)
Tools We Use: HiBob for HR, Teamtailor for recruitment, and Asana for task management – familiarity with these tools would be useful but not essential
Good experience with Excel or Google Sheets is a plus!
Working Arrangements: In-office, 20 hours per week, Monday - Friday
Salary
For this role, the salary will be £20,000.00-£25,000.00, depending on experience. In addition to your salary, we offer a flexible, autonomous working environment where you can grow and develop in your career.
Other benefits include:
15 days paid holiday in addition to Bank Holidays
Quarterly Wellness Budget
A generous and inclusive parental leave policy
Income protection insurance
Study and charity leave
Regular social and wellness events
Access to premium mental wellbeing platforms
AND MORE!
Equal Opportunities
Teams are stronger when they bring together a diverse range of people. We welcome applications from everyone, regardless of background. We’re committed to building a supportive, inclusive, and flexible workplace where people are trusted to work autonomously and THRIVE!
Want to know more? Visit our careers page to explore our recruitment process, meet our people, and get a feel for what life at GrantTree is like. While you’re there, be sure to connect with us to receive notifications about all our latest vacancies.
We’d love to hear from you!
- Locations
- HQ
- Yearly salary
- £20,000 - £25,000
- Employment type
- Part-time

About GrantTree
GrantTree was founded in 2010 by Paulina Sygulska-Tenner and Daniel Tenner out of their drive to provide tangible value to the burgeoning tech startup ecosystem. They were also deeply passionate about creating a living example of the future of work: where people are trusted, valued, and treated as whole humans.
The business grew rapidly and became known for its high quality service. When both founders exited in 2019, Nicky Johnson took over as CEO with a remit to scale the business and expand our impact.
In 2024, we were joined by now Chairman and CEO, Bob Leung. With over a decade of leadership experience, he’s passionate about creating self-driven teams and shaping company cultures that truly value and uplift their people. His mission is simple: to build not just great companies, but great places to work.
Over the years, GrantTree has significantly contributed to the growth of innovation in the UK, securing over £400 million in non-dilutive funding.
The story doesn’t end here. We’re building something exceptional to take GrantTree to the next level, and we hope you’ll be a part of our journey!
Office Manager and Operations Assistant - Part-Time
Are you detail-oriented and great at multitasking? Is seamless organisation your superpower? You’ll keep our office running smoothly, support operations, and handle tasks with efficiency and ease!
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