Quantinuum reviews

3.7

64% would recommend to a friend

(61 total reviews)

Ilyas Khan and Rajeeb Hazra

55% approve of CEO

74% positive business outlook

Quantinuum has an employee rating of 3.7 out of 5 stars, based on 61 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Quantinuum employee rating is in line with the average (within 1 standard deviation) for employers within the Information Technology industry (3.9 stars).

Reviews by job title

61 reviews
3.0
Jul 15, 2026

Strong team, but poor leadership in quantum computing

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Great team, apart from senior management

Cons

The CEO doesn't seem to know what he is doing. He is surrounded by non-technical people on the board and fails to distinguish what is genuinely important in the field of quantum computing. This leads to an over-reliance on advice from the American hardware team while neglecting the theory teams in the UK, which has already resulted in major strategic mistakes

2.0
Jul 9, 2026
Recommend
CEO approval
Business Outlook

Pros

The original design of the trapped ion quantum computing modality that Quantinuum has pursued, which is heralded as the ‘most mature’ of qubit modalities, has been pushed to an operational capability that is remarkable. This is a testament to the quality of the body of scientists and engineers. The transition from Honeywell Quantum Solutions to Quantinuum was an exciting time with credit of the spin given to the original President.

Cons

Quantinuum is veiled in a pretense of academic and scientific prestige that hides severe operational chaos and struggle. While the early days of the spin-off brought great promise of success, the progression since has revealed abundant operational and professional immaturities. Chief among them include a management structure comprised of legacy Honeywellers, a bureaucracy of ex-defense contractors, and freshly minted PhDs with zero professional or managerial experience, all in pursuit of personal gain. The current CEO is an example of the placement of an unseasoned figure head without the background, technical acumen, and charisma that is needed to lead such a high-tech enterprise. The culture is formed around an AMO physicist-centric value system where all other technical disciplines are regarded as second rate, as stated in other reviews. Consequently, a cloud of arrogance follows this members-only physicist club. Idea scooping is a common occurrence. Credit for concept generation and project leadership is the professional currency and has led to rife internal competition. A result of the Honeywell infusion is a salary and bonus structure that is low relative to the industry, sluggish to change, and with a strong politically-driven promotion track that favors managers and physicists over all other roles. If you want the promise of a bright career in Quantum Computing that follows with a soul-crushing political swamp and the sting of professional backstabbing, Quantinuum should be your top pick.

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Glassdoor has 71 Quantinuum reviews submitted anonymously by Quantinuum employees. Read employee reviews and ratings on Glassdoor to decide if Quantinuum is right for you.