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
2.0
Apr 24, 2026

All the good engineers have left

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

I loved this company from many years and saw myself almost retiring here. Ok salary, many opportunities to up-skill. Performance talks and yearly goal setting has improved a lot from last 2 years(or may be its my manager who joined around that time) in either case its best. Every one is generally polite. Engineers are all curious and willing to learn and grow.

Cons

Sad to say this but I don’t like this company any more. The culture has changed so much in last one year or so. Everything looks political and mean and everyone just wants to make you work so they can take credit. Most of my team members have left and including my manager who has been holding everything together. Management looks so disconnected with reality as what VP says and what’s been conveyed to us by interim/senior manager are two opposite things. Grapevine culture at its best. Speaking up upwards seems scary due to growing distrust and fear of being a victim of retaliation. Our VP says “everyone is replaceable” , which I can see when so many people left the organisation but it definitely is not something positive to say.

4.0
Apr 7, 2026

Nice place to work

Recommend
CEO approval
Business Outlook

Pros

This is an excellent place to learn about aviation, offering a wealth of data and a vibrant culture.

Cons

Pay Disparity especially amongst junior employees.

avatar
Cirium Response
1mo
Thank you for taking the time to share your review. We’re pleased to hear your feedback on the learning opportunities, aviation and data and the collaborative culture within Cirium. Our teams play an important role in helping customers across aviation, travel, finance, governments and more to make better, more informed decisions. At the heart of this is our purpose to power every decision connected to aviation, using data and analytics to support a more efficient and connected industry. Thank you for your feedback on pay. Fair, equitable and transparent reward is a priority, supported by defined policies and governance for pay, progression and review. We regularly assess our approach to ensure consistency and alignment with capability and development. Where there are perceptions or experiences of disparity, we take this seriously and use feedback to review and strengthen these processes. Thank you again for sharing your perspective.
1.0
Mar 29, 2026

Bureaucracy

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Healthy remuneration, multiple companies under one group.

Cons

Bureaucratic, unspoken expectations, weak travel product

avatar
Cirium Response
1mo
Thank you for taking the time to share your feedback. We appreciate your positive comments on remuneration and the breadth of opportunities across the wider RELX group. We are actively focused on simplifying processes, strengthening how expectations are communicated and ensuring greater consistency across teams. At the same time, we continue to invest in our market-leading products and capabilities, with a clear focus on delivering value for our customers and supporting our teams more effectively. Thank you again for sharing your perspective, and we encourage colleagues to continue providing feedback so we can keep improving.
Viewing 7 - 9 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.