---
title: 'Quantum Device Engineer (Silicon Spin-Qubits) at Equal1'
canonical: 'https://feeny.ai/job/quantum-device-engineer-silicon-spin-qubits-equal1-delft-hcak91tq1nca'
type: 'job'
last_seen: '2026-09-05'
---

# Quantum Device Engineer (Silicon Spin-Qubits) at Equal1

- **Company:** Equal1
- **Location:** Delft, Netherlands
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-04-24
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/equal1/329e18d8-2e45-4f80-895a-c0978a5d57d1

## Job description

We are seeking a highly skilled Quantum Device Engineer to join Equal1’s hardware team and take end-to-end ownership of key elements of our silicon spin-qubit device platform. This is a foundational role at the intersection of nanofabrication, cryogenic engineering, and qubit measurement. You will contribute to the development of our silicon spin qubit devices from process conception through validation, while helping build the laboratory infrastructure, workflows, and technical standards that will define our hardware roadmap.

This is a hands-on role at the intersection of cleanroom fabrication, cryogenic measurement, and quantum device engineering, well-suited to someone who thrives in a fast-paced environment and is motivated to turn world-class research into engineered, repeatable systems.

Key Responsibilities:

- Design and fabricate silicon-based spin-qubit devices using state-of-the-art nanofabrication tools.
- Develop process flows and refine recipes for complex multi-layer thin-film stacks, semiconductor heterostructures, and nanoscale device architectures.
- Identify process bottlenecks, improve reproducibility and yield, and implement structured process control methodologies.
- Perform structural characterisation (optical microscopy, SEM, AFM, etc.) and electrical measurements to assess device quality and performance.
- Execute transport experiments to validate device functionality at room temperature and under cryogenic conditions.
- Collaborate closely with theorists, device physicists, materials scientists, and systems engineers to translate system requirements into robust hardware solutions.
- Contribute to experimental strategy, roadmap planning, and longer-term architecture decisions.
- Strong documentation habits and the ability to communicate complex technical topics clearly across disciplines.

## EXPERIENCE AND QUALIFICATIONS

- MSc or PhD in Physics, Nanotechnology, Electrical Engineering, Materials Science, or a closely related field, with relevant experience in silicon spin qubits or comparable quantum device platforms.
- 5+ years of hands-on experience in a cleanroom environment, with strong capability to independently design, fabricate, and iterate nanoscale device structures.
- Proven expertise across key nanofabrication methods, including:
- Electron-beam lithography (EBL) and/or photolithography
- Thin-film deposition (e.g., evaporation, sputtering, ALD)
- Wet and dry etching processes
- Experience with semiconductor processing (silicon-based platforms preferred)
- Ability to design, fabricate, and iterate nanoscale device structures independently.
- Experience with electrical characterisation of nano-devices and experimental validation.
- Familiarity with low-temperature measurements (e.g., cryostats, dilution refrigerators)
- Knowledge of measurement techniques such as transport measurements, charge sensing, RF reflectometry, and quantum device characterisation is a plus
- Proficiency in scientific programming and data analysis (e.g., Python, MATLAB, LabVIEW), including visualisation and/or experimental control workflows.
- Strong documentation habits and ability to communicate complex technical topics clearly across disciplines.

Preferred Qualifications:

- Comfort building systems and processes from scratch in a fast-paced environment, with a strong bias toward execution and iteration.
- Willing to make engineering trade-offs without compromising long-term scalability
- Track record of scientific/technical impact (publications, patents, or equivalent contributions).

## About Equal1

## Company Overview
- **One-liner**: Equal1 builds the world's first rack-mounted silicon quantum computers designed to deploy alongside classical CPUs and GPUs in standard data center infrastructure.
- **Entity Type**: Private (Series A, last raised $60M in January 2026)
- **Headquarters**: Dublin 4, Ireland (with offices in Fremont, CA; Delft, Netherlands; Sherbrooke, Canada; Timișoara, Romania)
- **Founded**: 2017
- **Founders**: Dirk Leipold (President & Co-Founder), R. Bogdan Staszewski (Co-Founder)

## Core Business
- **Primary Industry**: Quantum Computing / Nanotechnology / High-Performance Computing
- **Target Customers**: Enterprise and government data centers, HPC clusters, AI labs, defense and aerospace organizations (current customer includes the European Space Agency)
- **Mission Statement**: "Quantum will not deliver from the lab. It delivers when it becomes deployable: infrastructure that can be bought, run, scaled and trusted inside high-performance compute environments."

## Products & Services
- **Equal1 RacQ**: A rack-mounted silicon quantum computer that fits into a standard server rack with standard power and cooling. It runs alongside existing CPU/GPU infrastructure and supports hybrid quantum-classical workloads. Currently shipping to customers.
- **UnityQ**: The silicon quantum processor (QSoC - Quantum System-on-Chip) built in standard CMOS foundries. Each generation adds more qubits, higher fidelity, and exponential compute within the same rack footprint.
- **Quantum Solutions**: Capabilities for optimization (logistics, portfolio, scheduling), simulation (molecular systems, materials science), Monte Carlo (risk, pricing, modeling), and Quantum AI (training paths beyond classical scaling).

## Market Standing
- **Total Funding**: $106.5M across 12 rounds (last round: $60M in January 2026 led by Ireland Strategic Investment Fund)
- **Valuation**: Not publicly disclosed
- **Notable Investors**: Ireland Strategic Investment Fund, Matterwave Ventures, Atlantic Bridge, Enterprise Ireland, Elkstone Partners, EIC Fund
- **Key Partnership**: Signed a deal with **Nvidia** (September 2024) for hybrid supercomputer and quantum systems
- **Growth Signals**: 
  - RacQ already shipping to customers including the **European Space Agency**
  - Headcount growing 15.6% YoY (38 employees as of mid-2026)
  - Opened Dutch lab in 2024, partnered with TNO (Netherlands Organisation for Applied Scientific Research)
  - 34 patents filed in quantum information science
  - Multiple generations of silicon already proven

## Competitive Advantages
- **Silicon CMOS Advantage**: Unlike other qubit modalities (superconducting, ion trap, photonic) that require exotic manufacturing, Equal1 builds in standard silicon foundries — making their chips manufacturable, deployable, and upgradeable at scale.
- **Rack-Mounted Form Factor**: The only quantum computer that fits in a standard data center rack with standard power and cooling — no cryogenic infrastructure or dedicated quantum facility required.
- **Deployed Today, Not "Soon"**: RacQ is already shipping to paying customers, including a major space agency.
- **Nvidia Partnership**: Direct integration with the dominant AI/HPC ecosystem.

## Strategic Focus
- Scaling qubit count and fidelity with each UnityQ processor generation
- Deepening hybrid quantum-classical compute integration with Nvidia
- Expanding commercial deployments into optimization, simulation, and AI workloads
- Building out the software stack and framework engineering team
- Growing headcount in engineering, quantum error correction, device physics, and software roles

## Why Work Here
- **Work Environment**: "Hybrid by default" — employees work across offices in Ireland, Netherlands, US, Canada, and Romania
- **Culture**: Rated 5.0/5.0 on employer review sites (Work-Life: 5.0, Compensation: 5.0, Culture: 5.0, Career: 5.0)
- **Team**: Small (~38 people), highly technical (26% technical, 15% research), with talent from Intel (5 alumni), University College Dublin (7), TNO, Qualcomm, and Movidius
- **Impact**: You'd be building deployable quantum infrastructure that's already shipping — not just doing research
- **Career Growth**: Open roles include VP of Quantum Software Engineering, Quantum Error Correction Lead, Senior Verification Engineer, Spin Qubit Calibration Engineer — indicating serious scaling of the engineering team
- **Notable**: Employees have gone on to Stanford, PsiQuantum, Qualcomm — showing the team is deeply embedded in the quantum ecosystem

## Sources
1. [equal1.com](https://www.equal1.com/)
2. [equal1.com/company](https://www.equal1.com/company)
3. [LinkedIn - Equal1](https://www.linkedin.com/company/equal1)
4. [CB Insights - Equal1](https://www.cbinsights.com/company/equal1labs)
5. [Jobs.ashbyhq.com/equal1](https://jobs.ashbyhq.com/equal1)

## Other roles at Equal1

- [Cryogenic Systems Engineer](https://feeny.ai/job/cryogenic-systems-engineer-equal1-california-h19kerxqkygn) — California
- [Junior Mechanical CAD Engineer / Designer](https://feeny.ai/job/junior-mechanical-cad-engineer-designer-equal1-california-a9xm7xbwt0ze) — California
- [Technical Program Manager – Cryomechanical & Quantum System Integration](https://feeny.ai/job/technical-program-manager-cryomechanical-quantum-system-integration-equal1-dsr0gnz4nv19) — California
- [Head of People](https://feeny.ai/job/head-of-people-equal1-dublin-8gn89h2vb4gq) — Dublin, Ireland
- [Quantum Error Correction Lead / Senior Quantum Error Correction Scientist](https://feeny.ai/job/quantum-error-correction-lead-senior-quantum-error-correction-scientist-equal1-qvbyxmxdsptz) — Dublin, Ireland
- [Software Stack / Framework Engineer](https://feeny.ai/job/software-stack-framework-engineer-equal1-timisoara-qk5b0hh4385x) — Timișoara, Romania
- [Speculative Applications (Quantum Computing)](https://feeny.ai/job/speculative-applications-quantum-computing-equal1-dublin-an13pxaaaghm) — Dublin, Ireland
- [Quantum Information Researcher](https://feeny.ai/job/quantum-information-researcher-equal1-dublin-rd0aa0nnnwmw) — Dublin, Ireland
- [Spin Qubit Calibration Engineer](https://feeny.ai/job/spin-qubit-calibration-engineer-equal1-delft-d0attrhvmsm6) — Delft, Netherlands