Glassdoor users rated their interview experience at Optimal Solutions Group as 100% positive with a difficulty rating score of 2 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Electrical Estimator and rated their interviews as the hardest, whereas interviews for Electrical Estimator and roles were rated as the easiest.
I applied online. I interviewed at Optimal Solutions Group in Oct 2025
Interview
Very smooth, first they asked for a brief introduction past roles, and then some simple questions about related experiences about the job position in the commercial and ICI construction and education as well
Interview questions [1]
Question 1
What is your day to day tasks at the current position?
The screening was simple. The take home was simple. It was mainly accessing how you write. This was before LLMs, so things might have changed. The interview was simple as well.
I applied through an employee referral. The process took 5 days. I interviewed at Optimal Solutions Group (Longtown, North West England, England) in Jun 2022
Interview
Straight forward at the interview. 1 to 1 process in person followed by a Drugs and alcohol test which the result was provided - onboarded very quick within a few days