Glassdoor users rated their interview experience at RED as 100% positive with a difficulty rating score of 3 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Engineer and rated their interviews as the hardest, whereas interviews for Engineer and roles were rated as the easiest.
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The interview process at RED was professional, organized, and transparent from start to finish. It included an initial HR screening followed by interviews with senior technical leaders and my prospective reporting manager. The discussions were conversational and focused on my sustainability consulting experience, projects, project management approach, and how I work with clients and teams. What stood out most was the professionalism and respect shown throughout the process, as the interviewers created a comfortable environment that encouraged genuine discussion rather than a high-pressure interview. Communication from HR was clear and timely. RED remained understanding, flexible, and supportive throughout the transition. Overall, it was a positive experience and left a strong impression of the company’s culture and professionalism.
Interview questions [1]
Question 1
Tell us about your background in sustainability consulting.
I applied online. I interviewed at RED (Kuala Lumpur) in Feb 2026
Interview
Flexible time as the interview is conducted online with panels from Singapore. Starting with explaining myself and proceed with technical question. The the interview proceed with Q&A session from me to the company.
Interview questions [1]
Question 1
I was asked a bit about technical knowlegde about electrical load calculation. and other related question about pass experience.
I applied online. I interviewed at RED (Bicester, England) in Oct 2025
Interview
First Round Interview with two engineers on teams. You will be asked to go through your CV and experience, then some basic electrical engineering technical questions, followed by situational and judgment questions. Interviewers were lovely. Super friendly people and a pleasure to be interviewed by.
AC a month later. Required to prepare a presentation about case study questions sent ahead of time. Introduction, data centre design layout task in pairs and then presentations and second round interviews (based on the tasks done). Great experience overall.