Quantinuum Series B · AI & Machine Learning · Cambridge, United Kingdom · Founded 2021 · 501–1000 employees
Quantinuum operates as an integrated full-stack quantum computing company formed by the merger of Cambridge Quantum Computing and Honeywell Quantum Solutions. The company develops both trapped-ion quantum computer hardware and advanced developer software, including its TKET optimization tool and Quantum Origin cybersecurity keys. It serves high-value sectors such as pharmaceuticals, finance, and artificial intelligence. In September 2025, the company secured a 600 million USD Series B funding round at a 10 billion USD valuation. It subsequently went public on the Nasdaq in June 2026, raising 1.68 billion USD at a 15.6 billion USD valuation.
Open roles at Quantinuum (50) On-site — Full-time US Broomfield, CO — Broomfield Internship at Quantinuum’s UK QEC team — Cambridge Principal Security Specialist - 939 — Broomfield Vice President, Deputy CLO - IP & Privacy - 944 — Broomfield Advanced Physicist - 782 — Broomfield Lead Semiconductor Fabrication Scientist - 854 — Brooklyn Park Optics Engineer II - 938 — Broomfield Director, Strategy Planning and Execution - 945 — Broomfield Lead Optics Engineer - 937 — Broomfield Vice President, Deputy CLO - IP & Privacy - 944 — London General Interest in working for Quantinuum - London-Cambridge-Oxford — London Senior Manager - Quantum Development Tools - 929 — Cambridge Senior R&D Scientist, Quantum Algorithms - 905 — Cambridge Lead Physicist – Apollo Integration and Verification - 790 — Broomfield VP Corporate Strategy - 882 — Cambridge Support Services Analyst - 863 — Broomfield Lead Semiconductor Packaging Engineer - 843 — Malta Senior Advanced Process Systems Engineer - Cryogenics - 680 — Broomfield イオントラップ型量子コンピュータ ハードウェアリサーチャー // Hardware Researcher – Ion Trap, Quantum Computing - 154 — Cambridge Senior Technical Program Manager - 769 — Cambridge Lead Experimental Physicist - 570 — Broomfield Lead Experimental Physicist (AMO) - 902 — Albuquerque VP Corporate Development - 883 — Cambridge Advanced R&D Scientist - Quantum Algorithms - 920 — Cambridge Senior Level Ion Trap Fabrication Scientist - PL — Brooklyn Park Consultant - Consulting & Advisory Services, Financial Services or Life Sciences 911/912 — Cambridge Technical Account Executive - Quantum - 792 — Cambridge Endpoint Engineer - 857 — Broomfield IT SAP Manager - 900 — Cambridge Facilities Engineer - 821 — Cambridge Lead Facilities Maintenance Technician - 884 — Brooklyn Park Assistant Controller - 878 — Broomfield Director of Global Payroll & Mobility - 940 — Broomfield Manager of People Analytics & Workforce Reporting - 941 — Broomfield VP, Product and Vertical Marketing - 916 — Broomfield Director, M&A and Strategic Partnerships - 913 — Broomfield Solutions Architect - Financial services (Principal or Director level) - 659 — Cambridge Solutions Architect, Pharmaceutical and Life Sciences (Principal or Director level) – 771 — Cambridge Advanced AMO Scientist - 733 — Broomfield Advanced Mechanical Engineer – System Design & Product Definition - 903 — Broomfield Advanced Opto-Mechanical Engineer - 926 — Broomfield Atomic Physicist for Ion Trapping & Integrated Photonics - 721 — Broomfield Atomic Source Physicist - 869 — Broomfield Chief Packaging Engineer - 906 — Cambridge Electrical Engineer - PL — Cambridge Experimental Physicist - CO — Broomfield Integrated Photonics Design Manager - 819 — Cambridge Integration Engineer - 917 — Brooklyn Park Ion Transport Physicist - 893 — Cambridge Lead R&D Engineer - 897 — Broomfield Explore: All startups in Cambridge · AI & Machine Learning startups in Cambridge · Series B startups in Cambridge Visit Quantinuum →