Qblox
Qblox builds quantum control equipment for quantum computers, scaling to hundreds of qubits with low latency and low noise. The Netherlands-based company, spun out of QuTech in 2018, raised $35M in a Series A in June 2024 and employs 184 people. Qblox sells quantum control stacks that integrate with customers' quantum computers, offering low-latency control flows and scalability to hundreds of qubits. Its equipment targets scientists and researchers advancing quantum technology. The company has grown rapidly since its spinout from QuTech, securing $35M in Series A funding in 2024. Its team of 184 includes a strong engineering focus, with 61 engineers, and draws heavily from Delft University of Technology and QuTech for talent.
The growth story
Qblox grew from 24 to 184 employees between 2022 and 2026, raising $35M along the way, most recently a Series A in June 2024.
About
At Qblox we operate at the frontier of the quantum revolution. With a dedicated team of scientists, engineers and developers we are pushing quantum technology to support scientists worldwide with our scalable and low-latency qubit control equipment. We are the sole providers of quantum control stacks that can be easily integrated with our customers’ quantum computers. The stacks combine unlevelled noise performance, low-latency arbitrary control flows and can be scaled up to 100s of qubits. Our company is based in the Netherlands and a spinoff of QuTech, which enables us to implement the latest scientific insights and take a position upfront in the worldwide race towards quantum advantage.
Founders and leadership
Qblox is led by a team of scientists, engineers, and developers, with engineering being the largest function at 61 employees. The company maintains close ties to QuTech, its parent organization, leveraging scientific insights to stay at the forefront of quantum technology.
The Qblox org chart
Niels Bultink (Co-founder & CEO) leads 52 mapped leaders with 6 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 77 (+15% YoY), Sales 16 (+100% YoY), Quality Assurance 10 (0% YoY), Research 10 (+150% YoY), Operations 9 (-10% YoY), Human Resources 8 (0% YoY).
Talent flow
Qblox recruits heavily from Delft University of Technology (15 employees) and QuTech (10 employees), reflecting its academic and research roots. Alumni often move to tech and quantum-focused companies like Nearfield Instruments, Hudl, and Quantum Machines.
Most common previous employers of Qblox staff: Delft University of Technology (15), QuTech (10), EVBox (7), TNO (5), Broadcom (4), Dell Technologies (4). Former Qblox employees most often moved to Nearfield Instruments (2), Hudl (2), Robin Radar (2), Sentyron (2), ASML (1), Quantum Machines (1).
Alumni worth knowing
Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Qblox: Python (Programming Language) (72), C++ (54), MATLAB (51), C (Programming Language) (47), Microsoft Office (44), Teamwork (40), LaTeX (38), Research Skills (37).
Where the team actually sits
Qblox people are concentrated in South Holland, Netherlands (50), North Holland, Netherlands (18), Netherlands (16), The Randstad, Netherlands (16).
Search footprint
Qblox attracts about 163 organic search visits a month, traffic worth roughly $1K a month if bought through ads. It gained 54 ranking keywords and lost 23 in the last period.
What employees say
- Compensation
- 2.50 / 5
- Career opportunities
- 2.80 / 5
- Senior management
- 1.80 / 5
- Work-life balance
- 3.10 / 5
Frequently asked
Qblox has 184 employees as of September 2026.
Qblox has raised $35M in total, most recently a Series A round in June 2024.
Qblox was founded in 2018 by Niels Bultink.
Niels Bultink (Co-founder & CEO) sits at the top of Qblox's reporting structure, with 6 direct reports.
The most common previous employers of current Qblox staff are Delft University of Technology (15 people), QuTech (10 people), EVBox (7 people).
Former Qblox employees most often move to Nearfield Instruments (2), Hudl (2), Robin Radar (2).
Qblox attracts about 163 organic search visits a month, worth roughly $1K a month in equivalent ad spend.
The most common skills among Qblox staff are Python (Programming Language), C++, MATLAB, C (Programming Language), Microsoft Office.
Qblox staff are concentrated in South Holland, Netherlands (50), North Holland, Netherlands (18), Netherlands (16).
Qblox has about 77 people in Engineering, up 15% over the past year, as of September 2026.
Qblox has about 16 people in Sales, up 100% over the past year, as of September 2026.
Computed from 149 current and 58 former Qblox profiles, as of September 2026. Source: Crustdata.
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