Glassdoor users rated their interview experience at BT Group as 66.7% positive with a difficulty rating score of 2.67 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Business Support Specialist and Security Professional rated their interviews as the hardest, whereas interviews for Security Professional and Design Engineer roles were rated as the easiest.
The hiring process at BT Group takes an average of 30 days when considering 3 user submitted interviews across all job titles. Candidates applying for Security Professional had the quickest hiring process (on average 30 days), whereas Security Professional roles had the slowest hiring process (on average 30 days).
I applied online. I interviewed at BT Group (London, England) in Jun 2026
Interview
The process consisted of an initial recruiter conversation, followed by a technical assessment and presentation. I was asked to build a Qlik Sense solution and present my approach and findings.
The assessment itself was engaging and allowed me to demonstrate my technical and analytical skills. However, one challenge was that the assessment required using software that generally requires a licence and is much easier to access if you are already employed by a company using the platform. As an individual candidate, obtaining access was unnecessarily difficult and added extra effort beyond the assessment itself.
Communication after the presentation was disappointing. The timelines initially provided were not met, and after investing significant time and effort into the assessment, I ultimately received a generic rejection email with no personalised feedback on my performance.
I fully appreciate that not every interview process results in an offer. However, for candidates who reach the assessment and presentation stages and invest considerable time overcoming technical and access hurdles, more transparent communication and constructive feedback would greatly improve the candidate experience.
I had two rounds of interviews. The first round I was interviewed by the Director of my team and a Data Scientist, the second round I was interviewed by a Lead Machine Learning Engineer who was more techie.
First round was some general questions about past experience plus a bit of technical questions.
Second round starts with a take home assignment, followed by a full blown technical interview.
Interview questions [1]
Question 1
What methods can you use for evaluating model performance and why you choose this specific one here.
dinamica em grupo, a etapa se iniciou com um pitch de apresentação de 2 minutos onde eles cronometravam o tempo das apresentações seguido por algumas perguntas bem rasas. Depois partimos para uma dinamica em grupo onde deveriamos solucionar um problema, bem tranquilo, demorou 30 minutos.
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