Q

QuantWare

Designs, fabricates scalable superconducting QPUs

Advanced Packaging Lead

Full-TimeUpdated on 10/15/2026
No salary listed
Mid, Senior
PhD
Delft, Netherlands
Hybrid
Hardware EngineeringHardware Systems Integration

About the job

Requirements
  • At least 4 years of experience in chip assembly development in deep-tech or low-volume technology.
  • Hands-on experience with back-end process-flow development, including under-bump metallization (UBM), hard stops, bumps, detachable contacts or microelectromechanical systems (MEMS), and flip-chip technologies.
  • A background in physics, microwave, radio frequency, electrical engineering, or a related field.
Responsibilities
  • Plan and lead the development of back-end fabrication and assembly technologies, focusing on improving flip-chip bonding techniques, contact reliability, and the manufacturability of quantum processors for the architecture chip stack.
  • Develop and coordinate integration test plans with cross-functional teams.
  • Lead the definition and formalization of assembly-centric fabrication and process development across the organization.
  • Establish scalable, well-documented integration procedures to support system growth.
  • Investigate and resolve integration issues and technical anomalies, ensuring alignment with specifications and overall performance targets.
Desired Qualifications
  • Experience with flip-chip technology in quantum computing is preferred.
  • A background in superconducting qubits is a significant plus.
  • A PhD is a plus.

About the company

QuantWare designs, fabricates, and sells superconducting quantum processors (QPUs) to quantum computing companies, research institutes, and tech groups worldwide, acting as a hardware supplier for the quantum ecosystem. Its QPUs use the VIO 3D integration architecture, which routes control signals vertically to overcome wiring bottlenecks and scale to thousands of qubits, with products like Soprano and Contralto and a roadmap to the VIO-40K up to 10,000 qubits. The company concentrates on QPU hardware only, enabling other players to build complete quantum systems without making their own processors, and is building a large‑volume fabrication path through KiloFab. QuantWare’s goal is to accelerate the arrival of useful quantum computing by expanding manufacturing capacity and making high‑quality quantum processors broadly available.

Company Size

51-200

Company Stage

Series B

Total Funding

$203.8M

Headquarters

Delft, Netherlands

Founded

2021

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Simplify's Take

What believers are saying

  • May 2026 Series B raised $178 million from Intel Capital and IQT.
  • QuantWare shipped to 50-plus customers across 20 countries by August 2026.
  • VIO-40K and KiloFab created a 2026 product-and-factory roadmap customers can pre-order.

What critics are saying

  • Rigetti, IQM, and Seeqc intensify competition for merchant superconducting chip customers.
  • VIO-40K deliveries slip until 2028, exposing QuantWare to funding and credibility pressure.
  • If KiloFab misses 20x capacity targets, QuantWare becomes a softwareless fab-cost sink.

What makes QuantWare unique

  • QuantWare sells merchant QPUs, unlike IBM and Google’s internal-only chip programs.
  • VIO routes wiring vertically, attacking superconducting scaling bottlenecks directly.
  • KiloFab aims for open-architecture QPU manufacturing, not closed-system vertical integration.

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Benefits

Flexible Work Hours

Hybrid Work Options

Paid Holidays

Professional Development Budget

Growth & Insights and Company News

Headcount

6 month growth

2%

1 year growth

-1%

2 year growth

-6%
TechDay
Oct 6th, 2026
QuantWare names Bart Filius CFO after $178M Series B to scale quantum processor production

QuantWare has appointed Bart Filius as Chief Financial Officer and added him to its board. The Delft-based quantum processor maker announced the hire as it expands production following a $178 million Series B round, described as the largest private funding for a dedicated quantum processor company. Filius joins from Galapagos, where he spent nearly nine years in senior roles including CFO, COO and president. He previously oversaw the company's Nasdaq IPO and led negotiations on a $5 billion research collaboration with Gilead. Before that, he spent 13 years at Sanofi. At QuantWare, Filius will oversee finance as the company builds KiloFab, an industrial-scale fabrication facility in the Netherlands. The company now serves over 50 customers across 20 countries. QuantWare was founded in 2021 as a spinout from QuTech at TU Delft.

EU-Startups
May 5th, 2026
QuantWare raises €152 million in the largest private round for a dedicated quantum processor company | EU-Startups

QuantWare, a Delft-based industrial quantum processor company, today announced a  €152 million ($178 million) Series B round following the announcement of

Tech Funding News
May 5th, 2026
Intel Capital, IQT join QuantWare's $178M Series B to build industrial-scale quantum chips

QuantWare, a Delft-based quantum processor company, has raised $178 million in a Series B round, the largest ever for a dedicated quantum processor firm. Intel Capital and IQT joined as new investors, alongside existing backers including FORWARD.one and Invest-NL Deep Tech Fund. Founded in 2021, QuantWare designs and sells quantum processing units and has shipped to over 50 customers across 20 countries, making it the largest commercial QPU supplier by volume. Unlike IBM or Google, which build chips exclusively for their own systems, QuantWare operates as a neutral supplier. The company uses modular chiplet designs and plans to build the world's largest dedicated quantum chip factory, increasing production capacity twentyfold. The funding will support development of processors 10 times larger than current market offerings.

UNIIQ
Feb 27th, 2026
QuantWare secures investment of UNIIQ and FORWARD.one to develop first standardised quantum processors - UNIIQ

QuantWare has secured a €650,000 investment from proof-of-concept fund UNIIQ, investment fund FORWARD.one and angel investors. With investments of Rabobank and Quantum Delta NL, and having been granted both a […]

Dutch IT Leaders
Jun 17th, 2025
QuantWare raises $27M for quantum tech

QuantWare has raised $27 million to advance its VIO technology, which addresses key challenges in scaling quantum processors. VIO enables the creation of quantum processors with significantly more qubits, paving the way for quantum computers with over a million qubits in a single processor. The funding will accelerate the expansion of QuantWare's chip manufacturing facilities and help attract top talent. CEO Matthijs Rijlaarsdam emphasized VIO's crucial role in the future of quantum computing.