Cirium reviews

3.1

45% would recommend to a friend

(106 total reviews)

Jeremy Bowen

83% approve of CEO

50% positive business outlook

Cirium has an employee rating of 3.1 out of 5 stars, based on 106 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Cirium employee rating is in line with the average (within 1 standard deviation) for employers within the Aerospace & Defense industry (3.6 stars).

Reviews by job title

106 reviews
3.0
Jan 30, 2026

Na

Recommend
CEO approval
Business Outlook

Pros

Had great company culture, I loved working here

Cons

Scaled too fast and not planned well

avatar
Cirium Response
3mo
Thank you for taking the time to share your experience and for recognising the culture that made Cirium a great place to work for you over many years. We also hear your reflections on the pace of growth. Scaling a business brings complexity, and when change moves quickly, it can place real pressure on teams. That’s why we’re working hard to ensure the change is accompanied by the right structure, clarity and support. Supporting teams through growth is a core leadership responsibility. We are clear that managers and leaders play a critical role in enabling their teams, providing clarity, planning effectively, staying close to workload and morale and ensuring people feel seen and supported through change. Investing in strong people leadership and team enablement is central to our focus on People, Culture & Belonging. Feedback like yours reinforces the importance of equipping leaders to lead change well, listening carefully to employee sentiment, and ensuring that loyalty, contribution and experience are reflected in how teams are supported day to day. Thank you for sharing your perspective.
1.0
Jan 27, 2026
Recommend
CEO approval
Business Outlook

Pros

Non tech culture looks great Over all company culture is great People are nice Most Engineering managers are what is holding people in the company Product is nice

Cons

Architects(not all but lead architect) are incompetent. Its strange to see how in competent people add value to the company without actually adding anything:) Culture is facing the down fall Technical leadership from last year has brought the culture of service based company to this great place to work Some of the newer members of TLT are been given the role to destroy what is left of now. Feedback ratings are so good as 80% of people are new and they dont know what they have got themselves into. If you work great, you will be awarded with someone who might be the most incompetent person of this company. Toxic culture at its best Boot licking gets you promoted Hypocrisy gets you a role in Leadership 50% of TLT lacks principles and some of them are frauds.

2.0
Dec 10, 2025
Recommend
CEO approval
Business Outlook

Pros

-good interesting products -good offices -good benefits

Cons

-Very weak corporate governance if issues arise -Unwise promotion candidates (or at least limited training for management) -Poor iteration between departments, slightly fostering blame culture

Viewing 13 - 15 of 106 Reviews

Glassdoor has 107 Cirium reviews submitted anonymously by Cirium employees. Read employee reviews and ratings on Glassdoor to decide if Cirium is right for you.