Office Administrator

Role Summary

• Responsibilities : You will support the smooth day‑to‑day running of our London office, delivering excellent customer service in a fast‑paced, collaborative environment while contributing to events, office operations, and wider initiatives that support Costello Medical’s culture and values
• Salary : £26,250 per annum (please note that we have established salary bands that are determined by your level of educational attainment to ensure a fair and consistent approach for all applicants, eliminating the need for individual negotiations)
• Benefits : Discretionary profit share bonuses paid twice per year, flexible working options, generous holiday allowance, private medical insurance, critical illness cover, income protection, full funding for external training, and more
• Role Type : Full-time, permanent role
• Start Date : The role will ideally commence in April, May or June 2026, and you will be asked to state your availability on your application form
• Application Deadlines : The deadline for applications is Sunday 19th April ​ with interviews taking place shortly after
• Location : This role is based in our London offices. Please note, due to the nature of this role, we are unable to offer any remote or hybrid working . Successful candidates must be in the office 5 days per week

About the Role

Do you enjoy organising, supporting others, and delivering great customer service? Are you excited by the idea of working in a fast‑paced environment where no two days are the same?

We are looking for an enthusiastic and proactive Office Administrator to join our growing team in London. This is an excellent opportunity for someone at the very beginning of their career who is eager to learn, develop new skills, and contribute to a busy and collaborative team.

Working closely with our London Workspace Manager, as well as other members of the UK Facilities & Support team, you will play an essential role in supporting the day-to-day running of the office and uphold our exceptional standards of customer service.

You will have the opportunity to support colleagues in a fast-paced, collaborative environment and to contribute to the planning and execution of successful events - including our annual client party hosted at the London office - as well as internal social events and celebrations that positively enhance Costello Medical’s culture.

You can learn more about our London office here:

At Costello Medical, we pride ourselves on nurturing talent from within, offering our employees a range of opportunities to develop in their career. The Office Administrator role is no exception, and our ideal candidate will have the chance to contribute to the following exciting projects:

• Net Zero Carbon : You will closely support the team with identifying and implementing new ways to ensure Costello Medical's continued commitment to reaching Net Zero Carbon status
• Corporate Social Responsibility : You will be instrumental in the continued success of Costello Medical's social and environmental performance as a B-Corporation

Key responsibilities include:

• Ensuring that we maintain a safe, tidy and professional environment, including managing the kitchen to a high standard
• Managing office and kitchen supplies and equipment, including responsibility for office‑related purchasing
• Coordinating office visits from colleagues and clients and greets them with a high level of friendliness and professionalism
• Supporting the planning and delivery of successful events, including client meetings and internal social events
• Building and maintaining strong working relationships with service providers, suppliers, and the building management team
• Administering the company’s internal ticketing system, handling requests such as office visits, travel equipment loans, and shipping, alongside other Office Administrators
• Providing ad‑hoc administrative support to the London Workspace Manager and the wider Operational Support Team when required
• Taking responsibility for day‑to‑day health and safety within the London office
• Actioning established IT procedures to support smooth office operations
• Representing the Operations division positively across client‑facing teams, proactively reducing the administrative burden on colleagues

About Costello Medical

Costello Medical is a rapidly growing global healthcare agency specialising in medical communications, market access, and health economic and outcomes research. We work with a wide range of clients, including the industry’s most successful pharmaceutical and medical technology companies, patient and public health bodies, and charitable organisations. We have been listed in the Top 100 Best Companies to Work For list since 2017, the Boston Globe’s Top Places to Work list in 2025, and were proud to receive B Corporation accreditation in 2022. Learn more about us, our work, and our mission on our website:

Requirements

About You

We are looking for an enthusiastic and ambitious candidate who is proactive, eager to take on new challenges, and who will thrive on providing an excellent service to our colleagues. You will be an organised, reliable, and personable administrator who enjoys supporting others and takes pride in creating a positive workplace experience.

Essential requirements for the role are:

• A strong commitment to delivering excellent customer service to colleagues, clients, and visitors
• Strong organisational skills, including the ability to plan and prioritise your own time and communicate this to others
• Excellent levels of productivity, and the flexibility to respond to changing deadlines
• The ability to work confidently on your own and with a high degree of autonomy
• Exceptional attention to detail and high professional standards
• Excellent written and verbal communication skills
• A high level of tact, discretion, and professionalism, particularly when handling confidential or sensitive information
• A friendly and approachable demeanour
• Fluency in Microsoft Word, Excel, Outlook, and PowerPoint, and confidence using these tools to support day‑to‑day operations

Whilst some experience as an Office Administrator (or in a related role) is desirable, we also welcome applications from those who are passionate about starting their career in facilities and office management.

Benefits

What We Offer

Alongside our award-winning company culture, where every team member is celebrated, respected, and has their voice heard, we are proud to offer a comprehensive benefits package that includes:

• A starting salary of £26,250 per annum, depending on your previous experience, as well as a discretionary profit share bonus paid twice per year. Please note that we have established salary bands to ensure a fair and consistent approach for all applicants, eliminating the need for individual negotiations
• 25 days’ annual leave plus bank and public holidays, as well as a holiday buy and sell scheme
• Flexible working hours and the chance to work from home for up to half of your working time after passing probation
• Flexible benefits scheme offering cash payments, additional pension contributions and more
• Private Medical Insurance which offers comprehensive cover on a “medical history disregard” basis
• Paid study leave and funding for external qualifications
• Critical Illness Cover, Income Protection and Life Assurance
• Paid and unpaid sabbaticals based on length of service

Learn more about our full reward package and the other benefits of working for Costello Medical:

The Application Process

You are required to submit your CV and a cover letter via our online application form. In your cover letter, you must explain why you think you would be suited to the role and why you would like to join Costello Medical, with examples to support both. Your CV should clearly state the dates of all qualifications and grades achieved where applicable.

Then, our recruitment process includes a telephone interview with a member of the Talent Acquisition team, followed by an interview in our London office with senior members of our Facilities team. Our standard recruitment process lasts around 3-4 weeks; however, this can be adapted if necessary.

As an equal opportunity employer, we are committed to fostering a diverse and inclusive workforce and, throughout the recruitment process, there are a number of reasonable adjustments we can provide:

Please note that, whilst we embrace AI to innovate and improve processes, your role may involve working with confidential data that cannot be uploaded to AI. Therefore, it is important for us to assess your own skills and abilities, so we recommend that you do not rely solely on this technology to generate any application materials.

Visa Sponsorship

Please note that this role does not meet the eligibility criteria for visa sponsorship, and you will therefore need the right to work in the UK independently from the company.