I applied online. The process took 2 days. I interviewed at BT Group (Ipswich, England) in Jan 2020
Interview
This vacancy was for a Software Engineer role in BT applied research.
Telephonic then F2F round in Ipswich. In telephonic round- briefing about role, few questions about your past roles. You can say first round is moreover screening of the candidate.
In F2F round there three sub-rounds : 1) Presentation - for which topic will be given to you well before presentation day to prepare well. 2) Another level of screening, interviewers were interested to know about my past roles and responsibilities in details. 3) Coding challenge
Interview questions [1]
Question 1
Telephonic : 1) What skill set I posses 2) what day to day activities you perform in current job or recent job. You get an opportunity to understand about the role you are being interviewed for.
F2F : You are asked to bring along your laptop on this day.
Presentation topic was “The key disruptions/trends influencing software development & deployment and how we should respond”. time limit 10 mins, do expect questions but they sit outside 10 mins slot. One important note : Keep the presentation downloaded on your machine, please do not keep your presentation on cloud (like google drive, one drive) because you may not get connectivity there.
Screening 2 : 1) what activities are part of your day to day job in current/recent job ? 2) what challenges you faced in current/recent job ? 3) What do you think is the biggest achievement in your career ? 4) How do you align yourself with technology changing world ?
Coding Challenge - write a program to limit the occurrence of the given character in a String. For Example : Input String is aaabbbccaa and limit is 2 then output should be aabbccaa. Another Example : Input String is aaacccbaba and limit is 1 then output should be acbaba. For this you can choose any language or IDE of your choice. Total time for this round is 45 mins. 30 mins for coding and 15 mins discussion about what you coded. In this round your laptop will be projected to a big Screen, and two BT coders will be watching you, no internet connection provided.
Was asked why I wanted to join the role standard questions then moved onto a technical Q&A where I was asked about Python specifically and different programming languages that I knew.
Interview questions [1]
Question 1
Explain what an object Oriented programming language is.
Good, the questions were in depth knowledge of Java and Reqct. 1 DSA question each round and LLD and HLD in round 2. The final round was on scalability and manager type questions.
I had 3 Rounds out of which two rounds are technical and last is managerial
1. Core Java, Spring boot, Streams related
2. LLD, Design related questions
3. Last Round was behavioural, scenario/situation based questions
Interview questions [1]
Question 1
1. Java 8 features, Java memory model, sql queries, stream api problems
2. LLD: Design Airline System
3. About project and general discussion