Medical Writer applicants have rated the interview process at Costello Medical with 3.4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 29% positive. To compare, the company-average is 50% positive. This is according to Glassdoor user ratings.
Candidates applying for Medical Writer roles take an average of 18 days to get hired, when considering 7 user submitted interviews for this role. To compare, the hiring process at Costello Medical overall takes an average of 27 days.
Common stages of the interview process at Costello Medical as a Medical Writer according to 7 Glassdoor interviews include:
Skills test: 25%
Other: 25%
Presentation: 25%
Group panel interview: 13%
Phone interview: 13%
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After CV and cover letter review, there was an invitation to an initial assessment of proofreading work on medical papers that needs to be done within a timeline and sent back
Other Medical Writer Interview Reviews for Costello Medical
I applied online. The process took 4 weeks. I interviewed at Costello Medical (Singapore) in Apr 2026
Interview
The interview process began with brief introductions, followed by a 10-minute presentation on a pre-assigned topic, for which preparation time was provided approximately two weeks in advance. This was followed by a combination of structured and more open-ended questions relating to the presentation, allowing for both clarification and deeper discussion. This portion of the interview was conducted by a Senior Medical Writer and a Senior Analyst and lasted approximately 30 minutes in total.
The second half of the interview focused on competency-based and fit-related questions, conducted by a Consultant and the APAC region head. This segment lasted around 45 minutes and provided an opportunity to discuss my background, motivations, and suitability for the role in greater depth.
I applied online. The process took 4 weeks. I interviewed at Costello Medical (London, England) in Apr 2026
Interview
After CV screening, and proofreading + writing assessment, I was invited to the final stage interview (presentation + qs, behavioural questions) which ended up being via Teams. Interview panel were all very friendly, the time for each segment was a bit strict, and you do get some gentle instant feedback for your answers. It was difficult in part because it was so long, but being well prepared with examples helped.
Interview questions [1]
Question 1
why costello/ why this role? what makes you stand out from other candidates for this position? why healthcare within science? someone who inspires you? teamwork-based question,