Office Manager and Operations Assistant - Part-Time

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

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• 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

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• 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:

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• 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